diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index fde8bb7..929f711 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,6 +1,7 @@
 stages:
   - build
   - deploy
+  - utils
 
 variables:
   DOCKER_TLS_CERTDIR: /certs
@@ -106,10 +107,42 @@ deploy:
     - |
       ssh $SSH_ADDRESS <<'EOF'
       cd ~/deploy
+      docker system prune -a --force
       docker compose pull > deploy.log 2>&1
-      docker compose down >> deploy.log 2>&1
       docker compose up -d --remove-orphans --force-recreate >> deploy.log 2>&1
       docker compose ps >> deploy.log 2>&1
       EOF
-    - ssh $SSH_ADDRESS "docker system prune -a --force"
+  retry: 2
+
+
+reset-compose:
+  image: kroniak/ssh-client:3.19
+  stage: utils
+  when: manual
+  rules:
+    - if: '$CI_COMMIT_REF_NAME == "master"'
+  variables:
+    SSH_HOST: "158.160.172.23"
+    SSH_USER: "ubuntu"
+    SSH_ADDRESS: "$SSH_USER@$SSH_HOST"
+    SSH_PRIVATE_KEY: SSH_PRIVATE_KEY
+  script:
+    - mkdir -p ~/.ssh
+    - chmod 700 ~/.ssh
+    - echo -e "Host *\n\tStrictHostKeyChecking no\n\n" > ~/.ssh/config
+    - echo "$SSH_PRIVATE_KEY" > ~/.ssh/id_rsa
+    - chmod 600 ~/.ssh/id_rsa
+    - ssh-keyscan -H "$SSH_HOST" > /dev/null 2>&1
+
+    - AUTH_COMMAND="echo "$CI_REGISTRY_PASSWORD" | docker login $CI_REGISTRY --username $CI_REGISTRY_USER --password-stdin";
+    - ssh $SSH_ADDRESS "$AUTH_COMMAND"
+    - scp -C -r infrastructure/ compose.yaml $SSH_ADDRESS:~/deploy/
+    - ssh $SSH_ADDRESS "docker -v"
+    - |
+      ssh $SSH_ADDRESS <<'EOF'
+      cd ~/deploy
+      docker compose down -v > deploy.log 2>&1
+      docker compose up -d --remove-orphans --force-recreate >> deploy.log 2>&1
+      docker compose ps >> deploy.log 2>&1
+      EOF
   retry: 2
diff --git a/compose.yaml b/compose.yaml
index eabd04b..a6f946f 100644
--- a/compose.yaml
+++ b/compose.yaml
@@ -370,11 +370,20 @@ services:
     restart: unless-stopped
     shm_size: 4mb
 
+  custom_python:
+    image: gitlab.prodcontest.ru:5050/team-15/project/custom-python:latest
+    entrypoint: ["sh", "-c", "exit 0"]
+
   checker:
     image: gitlab.prodcontest.ru:5050/team-15/project/checker:latest
     build:
       context: ./services/checker
       dockerfile: Dockerfile
+    depends_on:
+      custom_python:
+        restart: false
+        condition: service_completed_successfully
+        required: true
     env_file:
       - path: ./infrastructure/checker/.env.template
         required: true
@@ -391,6 +400,9 @@ services:
       - type: bind
         source: /var/run/docker.sock
         target: /var/run/docker.sock
+      - type: bind
+        source: /tmp
+        target: /tmp
 
   proxy:
     image: docker.io/nginx:1.27-alpine3.21
@@ -401,7 +413,7 @@ services:
       test: ["CMD", "service", "nginx", "status", "||", " exit 1"]
       interval: 1m30s
       timeout: 5s
-      start_period: 5s
+      start_period: 15s
       start_interval: 2s
       retries: 5
     ports:
diff --git a/infrastructure/checker/.env.template b/infrastructure/checker/.env.template
index 7c6f9d3..696fced 100644
--- a/infrastructure/checker/.env.template
+++ b/infrastructure/checker/.env.template
@@ -1,2 +1,2 @@
 REGISTRY_LOGIN=devitq
-REGISTRY_PASSWORD=14zQrbzDTM0WXK@CogMQikAvP74Rj4
+REGISTRY_PASSWORD=prod-zAoUDyHwkgRfQPyVvskH
diff --git a/infrastructure/grafana/grafana.ini b/infrastructure/grafana/grafana.ini
index 86cb5f8..9c79e84 100644
--- a/infrastructure/grafana/grafana.ini
+++ b/infrastructure/grafana/grafana.ini
@@ -48,13 +48,13 @@ domain = localhost
 enforce_domain = false
 
 # The full public facing url
-root_url = https://prod-team-15-2pc0i3lc.final.prodcontest.ru/admin/grafana/
+root_url = https://prod-team-15-2pc0i3lc.final.prodcontest.ru/admin/grafana
 
 # Serve Grafana from subpath specified in `root_url` setting. By default it is set to `false` for compatibility reasons.
 serve_from_sub_path = true
 
 # Log web requests
-router_logging = false
+router_logging = true
 
 # the path relative working path
 static_root_path = public
diff --git a/infrastructure/nginx/nginx.conf b/infrastructure/nginx/nginx.conf
index dff0f61..ffb5e55 100644
--- a/infrastructure/nginx/nginx.conf
+++ b/infrastructure/nginx/nginx.conf
@@ -183,8 +183,8 @@ http {
             client_max_body_size 100M;
         }
 
-        location /admin/grafana/ {
-            proxy_pass http://grafana:3000/;
+        location /admin/grafana {
+            proxy_pass http://grafana:3000/admin/grafana;
 
             proxy_set_header Host $http_host;
             proxy_set_header X-Real-IP $remote_addr;
diff --git a/services/backend/api/v1/achievement/schemas.py b/services/backend/api/v1/achievement/schemas.py
index ecc1c5d..74feaf8 100644
--- a/services/backend/api/v1/achievement/schemas.py
+++ b/services/backend/api/v1/achievement/schemas.py
@@ -1,6 +1,9 @@
-from ninja import ModelSchema
+from datetime import datetime
 
-from apps.achievement.models import Achievement
+from ninja import ModelSchema, Schema
+from pydantic import Field
+
+from apps.achievement.models import Achievement, UserAchievement
 
 
 class AchievementSchema(ModelSchema):
@@ -12,3 +15,14 @@ class AchievementSchema(ModelSchema):
             "description",
             "icon",
         )
+
+
+class UserAchievementSchema(Schema):
+    name: str = Field(..., alias="achievement.name")
+    description: str = Field(..., alias="achievement.description")
+    icon: str = Field(..., alias="achievement.icon")
+    received_at: datetime
+
+    class Meta:
+        model = UserAchievement
+        fields = ("received_at",)
diff --git a/services/backend/api/v1/achievement/views.py b/services/backend/api/v1/achievement/views.py
index 804348a..44a6eff 100644
--- a/services/backend/api/v1/achievement/views.py
+++ b/services/backend/api/v1/achievement/views.py
@@ -6,15 +6,16 @@ from api.v1.achievement.schemas import AchievementSchema
 from api.v1.schemas import UnauthorizedError
 from apps.achievement.models import Achievement
 
-router = Router()
+router = Router(tags=["achievement"])
 
 
 @router.get(
-    "",
+    "all",
     response={
         status.OK: list[AchievementSchema],
         status.UNAUTHORIZED: UnauthorizedError,
     },
+    auth=None,
 )
 def get_all_achievements(request):
     return Achievement.objects.all()
diff --git a/services/backend/api/v1/review/schemas.py b/services/backend/api/v1/review/schemas.py
index c623e2f..dd09d5c 100644
--- a/services/backend/api/v1/review/schemas.py
+++ b/services/backend/api/v1/review/schemas.py
@@ -38,6 +38,7 @@ class SubmissionOut(ModelSchema):
     competition_name: str = Field(..., alias="task.competition.title")
     task_position: int = Field(..., alias="task.in_competition_position")
     task_title: str = Field(..., alias="task.title")
+    description: str = Field(..., alias="task.description")
 
     @staticmethod
     def resolve_criteries(self, context) -> list[CriteriaOut] | None:
diff --git a/services/backend/api/v1/router.py b/services/backend/api/v1/router.py
index 4388666..4bcb70d 100644
--- a/services/backend/api/v1/router.py
+++ b/services/backend/api/v1/router.py
@@ -3,6 +3,7 @@ from functools import partial
 from ninja import NinjaAPI
 
 from api.v1 import handlers
+from api.v1.achievement.views import router as achievement_router
 from api.v1.auth import BearerAuth
 from api.v1.competition.views import router as competition_router
 from api.v1.ping.views import router as ping_router
@@ -49,6 +50,11 @@ router.add_router(
     team_router,
     auth=BearerAuth(),
 )
+router.add_router(
+    "achievements",
+    achievement_router,
+    auth=BearerAuth(),
+)
 
 
 for exception, handler in handlers.exception_handlers:
diff --git a/services/backend/api/v1/task/schemas.py b/services/backend/api/v1/task/schemas.py
index 9e73c37..3e07b92 100644
--- a/services/backend/api/v1/task/schemas.py
+++ b/services/backend/api/v1/task/schemas.py
@@ -33,6 +33,7 @@ class TaskOutSchema(ModelSchema):
             "description",
             "in_competition_position",
             "points",
+            "max_attempts"
         ]
 
 
diff --git a/services/backend/api/v1/task/views.py b/services/backend/api/v1/task/views.py
index 1b86af1..f2e93c9 100644
--- a/services/backend/api/v1/task/views.py
+++ b/services/backend/api/v1/task/views.py
@@ -12,6 +12,7 @@ from api.v1.task.schemas import (
     TaskOutSchema,
     TaskSubmissionOut,
 )
+from apps.achievement.models import Achievement, UserAchievement
 from apps.competition.models import State
 from apps.task.models import (
     Competition,
@@ -102,13 +103,27 @@ def submit_task(
         CompetitionTask, competition=competition, id=task_id
     )
 
+    if not CompetitionTaskSubmission.objects.filter(user=user).exists():
+        first_steps_achievement = Achievement.objects.get(slug="first_steps")
+        UserAchievement.objects.create(
+            user=user, achievement=first_steps_achievement
+        )
+
+    total_attempts = CompetitionTaskSubmission.objects.filter(
+        user=user, task=task
+    ).count()
+    if task.max_attempts == total_attempts:
+        return status.FORBIDDEN, ForbiddenError()
+
     if task.type == CompetitionTask.CompetitionTaskType.INPUT:
         submission = CompetitionTaskSubmission.objects.create(
             user=user,
             task=task,
             status=CompetitionTaskSubmission.StatusChoices.CHECKED,
-            result={"correct": content == task.answer_file_path},
             content=content,
+            result={
+                "correct": content.read() == task.correct_answer_file.read()
+            },
         )
     if task.type == CompetitionTask.CompetitionTaskType.REVIEW:
         submission = CompetitionTaskSubmission.objects.create(
diff --git a/services/backend/api/v1/user/schemas.py b/services/backend/api/v1/user/schemas.py
index b97f6ac..2109f8e 100644
--- a/services/backend/api/v1/user/schemas.py
+++ b/services/backend/api/v1/user/schemas.py
@@ -1,5 +1,7 @@
 from ninja import ModelSchema, Schema
 
+from api.v1.achievement.schemas import UserAchievementSchema
+from apps.achievement.models import UserAchievement
 from apps.user.models import User
 
 
@@ -20,9 +22,17 @@ class LoginSchema(ModelSchema):
 
 
 class UserSchema(ModelSchema):
+    achievements: list[UserAchievementSchema] = None
+
+    @staticmethod
+    def resolve_achievements(self, context):
+        return UserAchievement.objects.filter(
+            user=context.get("request").auth
+        ).order_by("-received_at")
+
     class Meta:
         model = User
-        fields = ["id", "email", "username", "created_at", "achievements"]
+        fields = ["id", "avatar", "email", "username", "created_at"]
 
 
 class StatSchema(Schema):
diff --git a/services/backend/api/v1/user/views.py b/services/backend/api/v1/user/views.py
index d7a3dfb..1344e8f 100644
--- a/services/backend/api/v1/user/views.py
+++ b/services/backend/api/v1/user/views.py
@@ -11,17 +11,18 @@ from api.v1.schemas import (
     BadRequestError,
     ConflictError,
     ForbiddenError,
-    NotFoundError, UnauthorizedError,
+    NotFoundError,
+    UnauthorizedError,
 )
 from api.v1.user.schemas import (
     LoginSchema,
     RegisterSchema,
+    StatSchema,
     TokenSchema,
     UserSchema,
-    StatSchema
 )
+from apps.task.models import CompetitionTaskSubmission, CompetitionTask
 from apps.user.models import User
-from apps.task.models import CompetitionTaskSubmission, ReviewStatusChoices
 
 router = Router(tags=["user"])
 
@@ -91,27 +92,26 @@ def get_user(request, user_id: str):
 
 @router.get(
     "/me/stat",
-    response={
-        status.OK: StatSchema,
-        status.UNAUTHORIZED: UnauthorizedError
-    },
+    response={status.OK: StatSchema, status.UNAUTHORIZED: UnauthorizedError},
 )
 def get_my_stat(request):
     user_submissions = CompetitionTaskSubmission.objects.filter(
         user=request.auth
     )
-    checked_attempts = user_submissions.filter(status=CompetitionTaskSubmission.StatusChoices.CHECKED).all()
+    checked_attempts = user_submissions.filter(
+        status=CompetitionTaskSubmission.StatusChoices.CHECKED
+    ).all()
     success_attempts_cnt = 0
 
     for attempt in checked_attempts:
-        is_correct = attempt.result.get("correct", None)
-        if is_correct is None:
-            is_correct = attempt.result.get("total_points", 0) > 0
+        if attempt.task.type == CompetitionTask.CompetitionTaskType.REVIEW:
+            is_correct = attempt.earned_points > 0
+        else:
+            is_correct = attempt.result.get("correct", None)
 
         if is_correct:
             success_attempts_cnt += 1
 
     return StatSchema(
-        total_attempts=len(user_submissions),
-        solved_tasks=success_attempts_cnt
+        total_attempts=len(user_submissions), solved_tasks=success_attempts_cnt
     )
diff --git a/services/backend/apps/achievement/icons/first_steps.png b/services/backend/apps/achievement/icons/first_steps.png
new file mode 100644
index 0000000..709bfbd
Binary files /dev/null and b/services/backend/apps/achievement/icons/first_steps.png differ
diff --git a/services/backend/apps/achievement/icons/start_competition.png b/services/backend/apps/achievement/icons/start_competition.png
new file mode 100644
index 0000000..d8a3519
Binary files /dev/null and b/services/backend/apps/achievement/icons/start_competition.png differ
diff --git a/services/backend/apps/achievement/icons/welcome.png b/services/backend/apps/achievement/icons/welcome.png
new file mode 100644
index 0000000..879f9a4
Binary files /dev/null and b/services/backend/apps/achievement/icons/welcome.png differ
diff --git a/services/backend/apps/achievement/management/commands/init_achievments.py b/services/backend/apps/achievement/management/commands/init_achievments.py
new file mode 100644
index 0000000..bb9f2fb
--- /dev/null
+++ b/services/backend/apps/achievement/management/commands/init_achievments.py
@@ -0,0 +1,42 @@
+from django.conf import settings
+from django.core.files import File
+from django.core.management import BaseCommand
+
+from apps.achievement.models import Achievement
+
+icons_dir = f"{settings.BASE_DIR}/apps/achievement/icons"
+
+
+class Command(BaseCommand):
+    help = "Create achievement fixtures."
+
+    def handle(self, *args, **options):
+        if not Achievement.objects.filter(slug="first_steps").exists():
+            with open(f"{icons_dir}/first_steps.png", "rb") as f:
+                first_steps_icon = File(f, name="first_steps.png")
+                Achievement.objects.get_or_create(
+                    name="Первые шаги",
+                    description="Отправьте свое первое решение на задачу!",
+                    slug="first_steps",
+                    icon=first_steps_icon,
+                )
+
+        if not Achievement.objects.filter(slug="welcome").exists():
+            with open(f"{icons_dir}/welcome.png", "rb") as f:
+                welcome_icon = File(f, name="welcome.png")
+                Achievement.objects.get_or_create(
+                    name="Добро пожаловать!",
+                    description="Зарегистрируйтесь на платформе",
+                    slug="welcome",
+                    icon=welcome_icon,
+                )
+
+        if not Achievement.objects.filter(slug="start_competition").exists():
+            with open(f"{icons_dir}/start_competition.png", "rb") as f:
+                start_competition = File(f, name="start_competition.png")
+                Achievement.objects.get_or_create(
+                    name="Да начнётся битва!",
+                    description="Начните соревнование",
+                    slug="start_competition",
+                    icon=start_competition,
+                )
diff --git a/services/backend/apps/achievement/migrations/0001_initial.py b/services/backend/apps/achievement/migrations/0001_initial.py
index b20fb21..89ba1fc 100644
--- a/services/backend/apps/achievement/migrations/0001_initial.py
+++ b/services/backend/apps/achievement/migrations/0001_initial.py
@@ -1,6 +1,7 @@
-# Generated by Django 5.1.6 on 2025-03-02 12:09
+# Generated by Django 5.1.6 on 2025-03-03 09:46
 
 import apps.achievement.models
+import django.db.models.deletion
 import uuid
 from django.db import migrations, models
 
@@ -19,11 +20,23 @@ class Migration(migrations.Migration):
                 ('id', models.UUIDField(default=uuid.uuid4, editable=False, primary_key=True, serialize=False)),
                 ('name', models.CharField(max_length=30, unique=True, verbose_name='название')),
                 ('description', models.TextField(verbose_name='описание')),
-                ('icon', models.FileField(upload_to=apps.achievement.models.Achievement.image_url_upload_to, verbose_name='иконка достижения')),
+                ('icon', models.ImageField(upload_to=apps.achievement.models.Achievement.image_url_upload_to, verbose_name='иконка достижения')),
+                ('slug', models.SlugField(unique=True, verbose_name='слаг')),
             ],
             options={
                 'verbose_name': 'ачивка',
                 'verbose_name_plural': 'ачивки',
             },
         ),
+        migrations.CreateModel(
+            name='UserAchievement',
+            fields=[
+                ('id', models.UUIDField(default=uuid.uuid4, editable=False, primary_key=True, serialize=False)),
+                ('received_at', models.DateTimeField(auto_now_add=True)),
+                ('achievement', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='achievement.achievement')),
+            ],
+            options={
+                'abstract': False,
+            },
+        ),
     ]
diff --git a/services/backend/apps/achievement/migrations/0002_achievement_need_count_achievement_type.py b/services/backend/apps/achievement/migrations/0002_achievement_need_count_achievement_type.py
deleted file mode 100644
index e16f3b6..0000000
--- a/services/backend/apps/achievement/migrations/0002_achievement_need_count_achievement_type.py
+++ /dev/null
@@ -1,23 +0,0 @@
-# Generated by Django 5.1.6 on 2025-03-02 12:56
-
-from django.db import migrations, models
-
-
-class Migration(migrations.Migration):
-
-    dependencies = [
-        ('achievement', '0001_initial'),
-    ]
-
-    operations = [
-        migrations.AddField(
-            model_name='achievement',
-            name='need_count',
-            field=models.IntegerField(default=5, help_text='Здесь нужно указать количество действий, необходимое для получения ачивок. Например, если вы указали в предыдущем пункте "Выполненные задания" а тут 5, то ачивка будет выдаваться за 5 решенных заданий', verbose_name='кол-во того, что нужно для получения ачивки'),
-        ),
-        migrations.AddField(
-            model_name='achievement',
-            name='type',
-            field=models.CharField(choices=[('correct_tasks', 'Выполненные задания')], default='correct_tasks', help_text='За какой тип достижений будет выдаваться ачивка', max_length=20, verbose_name='тип'),
-        ),
-    ]
diff --git a/services/backend/apps/achievement/migrations/0002_initial.py b/services/backend/apps/achievement/migrations/0002_initial.py
new file mode 100644
index 0000000..23da213
--- /dev/null
+++ b/services/backend/apps/achievement/migrations/0002_initial.py
@@ -0,0 +1,22 @@
+# Generated by Django 5.1.6 on 2025-03-03 09:46
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+        ('achievement', '0001_initial'),
+        ('user', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='userachievement',
+            name='user',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='user.user'),
+        ),
+    ]
diff --git a/services/backend/apps/achievement/migrations/0003_remove_achievement_need_count_and_more_squashed_0004_alter_achievement_slug.py b/services/backend/apps/achievement/migrations/0003_remove_achievement_need_count_and_more_squashed_0004_alter_achievement_slug.py
deleted file mode 100644
index 682a718..0000000
--- a/services/backend/apps/achievement/migrations/0003_remove_achievement_need_count_and_more_squashed_0004_alter_achievement_slug.py
+++ /dev/null
@@ -1,28 +0,0 @@
-# Generated by Django 5.1.6 on 2025-03-02 13:36
-
-from django.db import migrations, models
-
-
-class Migration(migrations.Migration):
-
-    replaces = [('achievement', '0003_remove_achievement_need_count_and_more'), ('achievement', '0004_alter_achievement_slug')]
-
-    dependencies = [
-        ('achievement', '0002_achievement_need_count_achievement_type'),
-    ]
-
-    operations = [
-        migrations.RemoveField(
-            model_name='achievement',
-            name='need_count',
-        ),
-        migrations.RemoveField(
-            model_name='achievement',
-            name='type',
-        ),
-        migrations.AddField(
-            model_name='achievement',
-            name='slug',
-            field=models.SlugField(unique=True, verbose_name='слаг'),
-        ),
-    ]
diff --git a/services/backend/apps/achievement/migrations/0005_alter_achievement_icon.py b/services/backend/apps/achievement/migrations/0005_alter_achievement_icon.py
deleted file mode 100644
index 7ed0851..0000000
--- a/services/backend/apps/achievement/migrations/0005_alter_achievement_icon.py
+++ /dev/null
@@ -1,19 +0,0 @@
-# Generated by Django 5.1.6 on 2025-03-02 14:03
-
-import apps.achievement.models
-from django.db import migrations, models
-
-
-class Migration(migrations.Migration):
-
-    dependencies = [
-        ('achievement', '0003_remove_achievement_need_count_and_more_squashed_0004_alter_achievement_slug'),
-    ]
-
-    operations = [
-        migrations.AlterField(
-            model_name='achievement',
-            name='icon',
-            field=models.ImageField(upload_to=apps.achievement.models.Achievement.image_url_upload_to, verbose_name='иконка достижения'),
-        ),
-    ]
diff --git a/services/backend/apps/achievement/models.py b/services/backend/apps/achievement/models.py
index 292598f..8116ff3 100644
--- a/services/backend/apps/achievement/models.py
+++ b/services/backend/apps/achievement/models.py
@@ -4,9 +4,6 @@ from apps.core.models import BaseModel
 
 
 class Achievement(BaseModel):
-    class AchievementType(models.TextChoices):
-        CORRECT_TASKS = "correct_tasks", "Выполненные задания"
-
     def image_url_upload_to(instance, filename):
         return f"achievements/{instance.id}/icon/{filename}"
 
@@ -27,3 +24,10 @@ class Achievement(BaseModel):
     class Meta:
         verbose_name = "ачивка"
         verbose_name_plural = "ачивки"
+
+
+class UserAchievement(BaseModel):
+    achievement = models.ForeignKey(Achievement, on_delete=models.CASCADE)
+    user = models.ForeignKey("user.User", on_delete=models.CASCADE)
+
+    received_at = models.DateTimeField(auto_now_add=True)
diff --git a/services/backend/apps/competition/apps.py b/services/backend/apps/competition/apps.py
index d343cd0..f10ee38 100644
--- a/services/backend/apps/competition/apps.py
+++ b/services/backend/apps/competition/apps.py
@@ -5,3 +5,6 @@ class CompetitionsConfig(AppConfig):
     name = "apps.competition"
     label = "competition"
     verbose_name = "Соревнование"
+
+    def ready(self):
+        import apps.competition.signals
diff --git a/services/backend/apps/competition/migrations/0001_initial.py b/services/backend/apps/competition/migrations/0001_initial.py
index 1ada8da..b11390f 100644
--- a/services/backend/apps/competition/migrations/0001_initial.py
+++ b/services/backend/apps/competition/migrations/0001_initial.py
@@ -1,4 +1,4 @@
-# Generated by Django 5.1.6 on 2025-03-02 10:28
+# Generated by Django 5.1.6 on 2025-03-03 09:46
 
 import apps.competition.models
 import datetime
diff --git a/services/backend/apps/competition/signals.py b/services/backend/apps/competition/signals.py
new file mode 100644
index 0000000..9a832bd
--- /dev/null
+++ b/services/backend/apps/competition/signals.py
@@ -0,0 +1,17 @@
+from django.db.models.signals import post_save
+from django.dispatch import receiver
+
+from apps.achievement.models import Achievement, UserAchievement
+from apps.competition.models import State
+from apps.user.models import User
+
+
+@receiver(post_save, sender=State)
+def assign_start_competition_achievement(sender, instance, created, **kwargs):
+    if created:
+        if State.objects.filter(user=instance.user, state=State.StateChoices.STARTED.value).count() == 1 \
+                and not State.objects.filter(user=instance.user, state=State.StateChoices.FINISHED.value).exists():
+            start_competition_achievement = Achievement.objects.get(slug="start_competition")
+            UserAchievement.objects.create(
+                user=instance.user, achievement=start_competition_achievement
+            )
diff --git a/services/backend/apps/core/contents/presentation.pptx b/services/backend/apps/core/contents/presentation.pptx
new file mode 100644
index 0000000..566b2db
Binary files /dev/null and b/services/backend/apps/core/contents/presentation.pptx differ
diff --git a/services/backend/apps/core/management/commands/generate_data.py b/services/backend/apps/core/management/commands/generate_data.py
index 4d2a916..855b4d3 100644
--- a/services/backend/apps/core/management/commands/generate_data.py
+++ b/services/backend/apps/core/management/commands/generate_data.py
@@ -6,12 +6,18 @@ from django.contrib.auth.hashers import make_password
 from django.core.files.base import ContentFile
 from django.core.management.base import BaseCommand
 from django.utils import timezone
+from faker import Faker
 
 from apps.competition.models import Competition, State
 from apps.review.models import Reviewer
-from apps.task.models import CompetitionTask, CompetitionTaskSubmission, CompetitionTaskCriteria
+from apps.task.models import (
+    CompetitionTask,
+    CompetitionTaskCriteria,
+    CompetitionTaskSubmission,
+)
 from apps.user.models import User, UserRole
 
+faker = Faker("ru_RU")
 
 class Command(BaseCommand):
     help = "Generate sample data for Users, Competitions, Tasks, Submissions, and States."
@@ -40,11 +46,10 @@ class Command(BaseCommand):
     def create_users(self, count):
         users = []
         for i in range(1, count + 1):
-            email = f"user{i}@example.com"
-            username = f"user{i}"
-            password = (
-                "password123"  # In production, use proper password handling.
-            )
+            fake_profile = faker.profile()
+            email = fake_profile["email"]
+            username = fake_profile["username"]
+            password = faker.password()
             role = random.choice(
                 [UserRole.STUDENT.value, UserRole.METODIST.value]
             )
@@ -64,7 +69,7 @@ class Command(BaseCommand):
         competitions = []
         now = timezone.now()
         for i in range(1, count + 1):
-            title = f"Competition {i}"
+            title = faker.sentence()
             description = f"Description for competition {i}"
             start_date = now - timedelta(days=random.randint(1, 10))
             end_date = now + timedelta(days=random.randint(1, 10))
@@ -92,7 +97,7 @@ class Command(BaseCommand):
         task_types = [
             CompetitionTask.CompetitionTaskType.INPUT.value,
             CompetitionTask.CompetitionTaskType.REVIEW.value,
-            CompetitionTask.CompetitionTaskType.INPUT.value
+            CompetitionTask.CompetitionTaskType.INPUT.value,
         ]
         for comp in competitions:
             # Create 3 tasks per competition
@@ -110,7 +115,10 @@ class Command(BaseCommand):
                     submission_reviewers_count=random.randint(2, 10),
                     max_attempts=random.randint(1, 10),
                 )
-                if task_type == CompetitionTask.CompetitionTaskType.REVIEW.value:
+                if (
+                    task_type
+                    == CompetitionTask.CompetitionTaskType.REVIEW.value
+                ):
                     for j in range(5):
                         CompetitionTaskCriteria.objects.create(
                             task=task,
@@ -132,28 +140,29 @@ class Command(BaseCommand):
 
     def create_submissions(self, tasks, users):
         for task in tasks:
-            # Each task will get between 1 and 3 submissions
-            num_submissions = random.randint(1, 3)
-            for _ in range(num_submissions):
-                user = random.choice(users)
-                # Create a dummy content file
-                dummy_content = ContentFile(
-                    b"Submission content",
-                    name=f"submission_{uuid.uuid4().hex}.txt",
-                )
-                submission = CompetitionTaskSubmission.objects.create(
-                    user=user,
-                    task=task,
-                    earned_points=random.randint(
-                        0, task.points if task.points else 10
-                    ),
-                    content=dummy_content,
-                )
-                submission.save()
-                submission.send_on_review()
-                self.stdout.write(
-                    f"Created submission for task '{task.title}' by user '{user.username}'"
-                )
+            if task.type == CompetitionTask.CompetitionTaskType.REVIEW.value:
+                # Each task will get between 1 and 3 submissions
+                num_submissions = random.randint(1, 3)
+                for _ in range(num_submissions):
+                    user = random.choice(users)
+                    # Create a dummy content file
+                    dummy_content = ContentFile(
+                        b"Submission content",
+                        name=f"submission_{uuid.uuid4().hex}.txt",
+                    )
+                    submission = CompetitionTaskSubmission.objects.create(
+                        user=user,
+                        task=task,
+                        earned_points=random.randint(
+                            0, task.points if task.points else 10
+                        ),
+                        content=dummy_content,
+                    )
+                    submission.save()
+                    submission.send_on_review()
+                    self.stdout.write(
+                        f"Created submission for task '{task.title}' by user '{user.username}'"
+                    )
 
     def create_states(self, competitions, users):
         # For each competition, create a State for some of its participants
diff --git a/services/backend/apps/core/management/commands/generate_pretty_data.py b/services/backend/apps/core/management/commands/generate_pretty_data.py
new file mode 100644
index 0000000..2a9da0a
--- /dev/null
+++ b/services/backend/apps/core/management/commands/generate_pretty_data.py
@@ -0,0 +1,386 @@
+import random
+import uuid
+from datetime import timedelta, datetime
+
+from django.conf import settings
+from django.contrib.auth.hashers import make_password
+from django.core.files.base import ContentFile, File
+from django.core.management.base import BaseCommand
+from django.utils import timezone
+
+from apps.competition.models import Competition, State
+from apps.review.models import Reviewer
+from apps.task.models import (
+    CompetitionTask,
+    CompetitionTaskCriteria,
+    CompetitionTaskSubmission,
+)
+from apps.user.models import User, UserRole
+
+ans1 = ContentFile(
+    b"1984",
+    name=f"submission_{uuid.uuid4().hex}.txt",
+)
+ans2 = ContentFile(
+    b"3",
+    name=f"submission_{uuid.uuid4().hex}.txt",
+)
+
+now = timezone.now()
+competitions = [
+    {
+        "obj": None, # докидывает в процессе
+        "title": "DANO. Финал",
+        "description": "Олимпиада по анализу данных от Т-Банка и ВШЭ",
+        "start_date": now - timedelta(days=2),
+        "end_date": now + timedelta(days=5),
+        "type": "competitive",
+        "participation_type": "solo",
+        "tasks": [
+            {
+                "obj": None,
+                "title": "Задача 1",
+                "description": """На маркетплейсе «Е-шопинг» продаются различные товары. Одна из задач аналитика —
+прогнозировать, сколько товаров будет продаваться при определенной цене. В ходе
+исследований и экспериментов был выявлен вид зависимости:
+$Q(P) = Q_0 \times e^{E \times \frac{P_0 - P}{P_0}}$
+где Q — это количество проданных единиц товара при цене P,
+Q 0 — количество проданных единиц товара при цене P0 ,
+E — коэффициент чувствительности количества проданных единиц товара к изменению
+цены.
+
+Найдите, сколько заработает продавец при цене по 3 000 ₽ за нож и сковороду
+при условии, что себестоимость ножа — 1 000 ₽, а сковородки — 2 000 ₽.Ответ
+округлите до целых.""".strip(),
+                "type": CompetitionTask.CompetitionTaskType.INPUT.value,
+                "points": 3,
+                "submission_reviewers_count": 2,
+                "max_attempts": 20,
+                "correct_answer_file": ans1
+            },
+            {
+                "obj": None,
+                "title": "Задача 2",
+                "description": """
+Напишите "hello_dano" на питоне
+""".strip(),
+                "type": CompetitionTask.CompetitionTaskType.CHECKER.value,
+                "points": 25,
+                "submission_reviewers_count": 2,
+                "max_attempts": 50,
+            },
+            {
+                "obj": None,
+                "title": "Задача 3",
+                "description": """Небольшой интернет-магазин собрал данные о действиях пользователей на своем сайте
+за последние несколько месяцев.
+ecommerce_logs.csv — журнал действий пользователей:
+• user_id — идентификатор пользователя.
+• action — тип действия пользователя:
+— visit — посещение сайта;
+— click — клик на карточку товара;
+— cart — добавление товара в корзину;
+— delete — удаление товара из корзины;
+— purchase — покупка товаров.
+• date_time — время совершения действия.
+• product_id — идентификатор товара.
+• quantity — количество добавленного в корзину товара.
+• delivery_price — стоимость доставки.
+• sex — пол пользователя.
+• region — регион пользователя.
+• price — цена товара.
+
+Вам нужно изучить воронку конверсии, которая показывает, как пользователи переходят
+от одного шага к другому на сайте. В нашем случае воронка состоит из следующих шагов:
+1. Посещение сайта.
+2. Просмотр карточки товара.
+3. Добавление товара в корзину.
+4. Покупка.
+
+1. Посещение сайта.
+2. Просмотр карточки товара.
+3. Добавление товара в корзину.
+4. Покупка.
+3 / 11
+1.) Посчитайте конверсию (округлите ответ до 3 знаков после запятой):
+• Из визита на сайт в клик на карточку товара.
+• Из клика в добавление в корзину.
+• Из добавления в корзину в покупку.
+• Из визита на сайт в добавление в корзину.
+• Из визита на сайт в покупку.
+2. Постройте воронку конверсии с помощью столбчатой диаграммы:
+• По оси X — шаги воронки.
+• По оси Y — количество уникальных пользователей на каждом шаге.
+3. Определите, на каком этапе конверсия из предыдущего шага ниже всего.
+Сформулируйте одну гипотезу, связанную с поведением пользователей, которая
+может объяснить падение конверсии именно на этом этапе. Обоснуйте механизм
+работы приведенной гипотезы.
+4. Постройте график динамики (по оси X — дни) для каждой из конверсий:
+• Конверсия из визита в клик.
+• Конверсия из визита в добавление в корзину.
+• Конверсия из визита в покупку.
+5. На графике найдите просадку конверсии: укажите, какая конверсия просела
+и в какой примерно период это произошло (допустимая погрешность — 1–3
+дня).
+6. Чем вызвано снижение конверсии в этот период? Какие изменения в бизнесе
+или поведении пользователей могли бы объяснить это? Ответьте на оба
+вопроса, опираясь на данные.
+""".strip(),
+                "type": CompetitionTask.CompetitionTaskType.REVIEW.value,
+                "points": 10,
+                "submission_reviewers_count": 2,
+                "max_attempts": 1,
+                "criteries": [
+                    {
+                        "obj": None,
+                        "name": "Обоснованность решения",
+                        "slug": "validity",
+                        "description": "Аргументация",
+                        "max_value": 5
+                    },
+                    {
+                        "obj": None,
+                        "name": "Правильность",
+                        "slug": "correctness",
+                        "description": "Насколько точные и верные ответы были представлены.",
+                        "max_value": 5
+                    }
+                ]
+            },
+        ]
+    },
+    {
+        "obj": None,
+        "title": "PRODANO. Тур 5",
+        "description": "Олимпиада по олимпиаде DANO",
+        "start_date": now - timedelta(days=10),
+        "end_date": now + timedelta(days=50),
+        "type": "edu",
+        "participation_type": "solo",
+        "tasks": [
+            {
+                "obj": None,
+                "title": "Задача 1",
+                "description": """Сколько этапов в DANO?""".strip(),
+                "type": CompetitionTask.CompetitionTaskType.INPUT.value,
+                "points": 3,
+                "submission_reviewers_count": 2,
+                "max_attempts": 20,
+                "correct_answer_file": ans2
+            },
+            {
+                "obj": None,
+                "title": "Задача 2",
+                "description": """
+Напишите отзыв про DANO(Хороший)
+""".strip(),
+                "type": CompetitionTask.CompetitionTaskType.REVIEW.value,
+                "points": 15,
+                "submission_reviewers_count": 2,
+                "max_attempts": 1,
+                "criteries": [
+                    {
+                        "obj": None,
+                        "name": "Хорошесть отзыва",
+                        "slug": "validity",
+                        "description": "Хорошесть",
+                        "max_value": 10
+                    },
+                    {
+                        "obj": None,
+                        "name": "Подробность",
+                        "slug": "detail",
+                        "description": "Насколько подробно расписан ответ.",
+                        "max_value": 5
+                    }
+                ]
+            },
+            {
+                "obj": None,
+                "title": "Задача 3",
+                "description": """
+Напишите выведите 1+3 на питоне
+""".strip(),
+                "type": CompetitionTask.CompetitionTaskType.CHECKER.value,
+                "points": 30,
+                "submission_reviewers_count": 2,
+                "max_attempts": 100,
+            }
+        ]
+    }
+]
+
+users = [
+    {
+        "email": "germanivanov1984@gmail.com",
+        "username": "germanivanov",
+        "password": "password123!",
+        "role": UserRole.STUDENT.value,
+    },
+    {
+        "email": "dreamonovich@gmail.com",
+        "username": "dreamonovich",
+        "password": "password123!",
+        "role": UserRole.STUDENT.value,
+    }
+]
+
+reviewers = [
+    {
+        "name": "Владислав",
+        "surname": "Пикиневич",
+        "token": "aa443163-9861-4b8d-b8f7-81ecd25f6088"
+    },
+    {
+        "name": "Александр",
+        "surname": "Шахов",
+        "token": "d2e8904a-01dd-4f84-a8b0-8a60f1a3b6c0"
+    }
+]
+
+class Command(BaseCommand):
+    help = "Generate sample data for Users, Competitions, Tasks, Submissions, and States."
+
+    def handle(self, *args, **options):
+        self.stdout.write("Starting data generation...")
+        users = self.create_users(5)
+        competitions = self.create_competitions(2, users)
+        self.reviewers = self.create_reviewers(2)
+        tasks = self.create_tasks()
+        self.create_incorrect_submissions(tasks, users)
+        self.create_states(competitions, users)
+        self.stdout.write("Data generation completed.")
+
+    def create_reviewers(self, count):
+        reviewers_objs = []
+        for reviewer in reviewers:
+            name = reviewer['name']
+            surname = reviewer['surname']
+            token = reviewer['token']
+            reviewer_obj = Reviewer(name=name, surname=surname, token=token)
+            reviewer_obj.save()
+            reviewers_objs.append(reviewer_obj)
+        return reviewers_objs
+
+    def create_users(self, count):
+        users_objs = []
+        for user in users:
+            user_obj, created = User.objects.get_or_create(
+                email=user['email'],
+                defaults={
+                    "username": user['username'],
+                    "password": make_password(user['password']),
+                    "status": user['role'],
+                },
+            )
+            users_objs.append(user_obj)
+            self.stdout.write(f"Created user: {user['username']}")
+        return users_objs
+
+    def create_competitions(self, count, users):
+        competitions_objs = []
+
+        for i, competition in enumerate(competitions):
+            competition_obj = Competition.objects.create(
+                title=competition['title'],
+                description=competition['description'],
+                start_date=competition['start_date'],
+                end_date=competition['end_date'],
+                type=competition['type'],
+                participation_type=competition['participation_type'],
+            )
+
+            competitions[i]['obj'] = competition_obj
+            competition_obj.participants.add(*users)
+            competitions_objs.append(competition_obj)
+            self.stdout.write(f"Created competition: {competition['title']}")
+        return competitions_objs
+
+    def create_tasks(self):
+        tasks_objs = []
+        task_types = [
+            CompetitionTask.CompetitionTaskType.INPUT.value,
+            CompetitionTask.CompetitionTaskType.REVIEW.value,
+            CompetitionTask.CompetitionTaskType.INPUT.value,
+        ]
+        for i, competition in enumerate(competitions):
+            for j, task in enumerate(competition['tasks']):
+                task_obj = CompetitionTask.objects.create(
+                    in_competition_position=j,
+                    competition=competition['obj'],
+                    title=task['title'],
+                    description=task['description'],
+                    type=task['type'],
+                    points=task['points'],
+                    submission_reviewers_count=task['submission_reviewers_count'],
+                    max_attempts=task['max_attempts'],
+                )
+                competitions[i]['tasks'][j]['obj'] = task_obj
+
+                if task['type'] == CompetitionTask.CompetitionTaskType.INPUT.value:
+                    task_obj.correct_answer_file = task['correct_answer_file']
+
+                if (
+                    task['type']
+                    == CompetitionTask.CompetitionTaskType.REVIEW.value
+                ):
+                    for k, criteria in enumerate(task['criteries']):
+                        criteria_obj = CompetitionTaskCriteria.objects.create(
+                            task=task_obj,
+                            name=criteria['name'],
+                            slug=criteria['slug'],
+                            description=criteria['description'],
+                            max_value=criteria['max_value'],
+                        )
+                        competitions[i]['tasks'][j]['criteries'][k]['obj'] = criteria_obj
+                        self.stdout.write(f"Created criteria: {criteria['slug']}")
+                tasks_objs.append(task_obj)
+                self.stdout.write(f"Created task: {task['title']} (type: {task['type']})")
+        self.add_reviewers_to_task(tasks_objs)
+        return tasks_objs
+
+    def add_reviewers_to_task(self, tasks):
+        for task in tasks:
+            task.reviewers.set(self.reviewers)
+            task.save()
+
+    def create_incorrect_submissions(self, tasks, users):
+        for user in users:
+            for task in tasks:
+                if task.type == CompetitionTask.CompetitionTaskType.REVIEW.value:
+                    num_submissions = random.randint(1, 3)
+                    for m in range(num_submissions):
+                        dummy_content_txt = ContentFile(
+                            b"otvet: 112 sto proc" ,
+                            name=f"submission_{uuid.uuid4().hex}.txt",
+                        )
+
+                        content_dir = f"{settings.BASE_DIR}/apps/core/contents"
+                        with open(f"{content_dir}/presentation.pptx", "rb") as f:
+                            pptx = File(f, name="presentation.pptx")
+                            files = [pptx, pptx, dummy_content_txt]
+                            submission = CompetitionTaskSubmission.objects.create(
+                                user=user,
+                                task=task,
+                                content=random.choice(files),
+                            )
+                        submission.save()
+                        submission.send_on_review()
+                        self.stdout.write(
+                            f"Created submission for task '{task.title}' by user '{user.username}'"
+                        )
+
+    def create_states(self, competitions, users):
+        for comp in competitions:
+            for user in comp.participants.all():
+                state_obj, created = State.objects.get_or_create(
+                    user=user,
+                    competition=comp,
+                    defaults={
+                        "state": "started",
+                        "changed_at": timezone.now() - timedelta(days=random.randint(1, 30)),
+                    },
+                )
+                self.stdout.write(
+                    f"Created state '{state_obj.state}' for user '{user.username}' in competition '{comp.title}'"
+                )
diff --git a/services/backend/apps/review/apps.py b/services/backend/apps/review/apps.py
index 138bf7f..b144226 100644
--- a/services/backend/apps/review/apps.py
+++ b/services/backend/apps/review/apps.py
@@ -7,4 +7,4 @@ class CoreConfig(AppConfig):
     verbose_name = "Проверка"
 
     def ready(self):
-        import apps.review.signals
+        pass
diff --git a/services/backend/apps/review/migrations/0001_initial.py b/services/backend/apps/review/migrations/0001_initial.py
index 1d0ac7b..c69fdd1 100644
--- a/services/backend/apps/review/migrations/0001_initial.py
+++ b/services/backend/apps/review/migrations/0001_initial.py
@@ -1,4 +1,4 @@
-# Generated by Django 5.1.6 on 2025-03-02 10:28
+# Generated by Django 5.1.6 on 2025-03-03 09:46
 
 import uuid
 from django.db import migrations, models
diff --git a/services/backend/apps/review/migrations/0002_initial.py b/services/backend/apps/review/migrations/0002_initial.py
index 2d6ee5c..d830b54 100644
--- a/services/backend/apps/review/migrations/0002_initial.py
+++ b/services/backend/apps/review/migrations/0002_initial.py
@@ -1,4 +1,4 @@
-# Generated by Django 5.1.6 on 2025-03-02 10:28
+# Generated by Django 5.1.6 on 2025-03-03 09:46
 
 import django.db.models.deletion
 from django.db import migrations, models
diff --git a/services/backend/apps/review/signals.py b/services/backend/apps/review/signals.py
index 44da6c2..2386300 100644
--- a/services/backend/apps/review/signals.py
+++ b/services/backend/apps/review/signals.py
@@ -2,13 +2,12 @@
 from django.db.models.signals import m2m_changed
 from django.dispatch import receiver
 
-from apps.review.models import Review
 from apps.task.models import CompetitionTask, CompetitionTaskSubmission
 
 
 @receiver(m2m_changed, sender=CompetitionTask.reviewers.through)
 def print_reviewers(sender, instance, action, **kwargs):
-    if action in ['post_add', 'post_remove', 'post_clear']:
+    if action in ["post_add", "post_remove", "post_clear"]:
         submissions = CompetitionTaskSubmission.objects.filter(task=instance)
         for submission in submissions:
-            submission.send_on_review()
\ No newline at end of file
+            submission.send_on_review()
diff --git a/services/backend/apps/task/admin.py b/services/backend/apps/task/admin.py
index 4a8ff15..ca097c0 100644
--- a/services/backend/apps/task/admin.py
+++ b/services/backend/apps/task/admin.py
@@ -3,6 +3,7 @@ from django.contrib import admin
 from apps.task.models import (
     CompetitionTask,
     CompetitionTaskAttachment,
+    CompetitionTaskCriteria,
     CompetitionTaskSubmission,
 )
 
@@ -12,10 +13,20 @@ class CompletionAttachmentInline(admin.StackedInline):
     extra = 0
 
 
+class CompetitionCriteriaInline(admin.StackedInline):
+    model = CompetitionTaskCriteria
+    extra = 0
+
+
 @admin.register(CompetitionTask)
 class CompetitionTaskAdmin(admin.ModelAdmin):
     list_display = ("title", "type", "points")
     filter_horizontal = ("reviewers",)
+    list_filter = ("type",)
+    inlines = (
+        CompletionAttachmentInline,
+        CompetitionCriteriaInline,
+    )
 
 
 @admin.register(CompetitionTaskSubmission)
@@ -31,15 +42,12 @@ class CompetitionTaskSubmissionAdmin(admin.ModelAdmin):
         "user__username",
         "user__email",
     )
-    list_filter = ("plagiarism_checked", "status",)
+    list_filter = ("plagiarism_checked", "status")
     ordering = ["-timestamp"]
 
     def has_add_permission(self, request, obj=None):
         return False
 
-    def has_delete_permission(self, request, obj=None):
-        return False
-
 
 class CompetitionTaskInline(admin.StackedInline):
     model = CompetitionTask
diff --git a/services/backend/apps/task/migrations/0001_initial.py b/services/backend/apps/task/migrations/0001_initial.py
index c2cbaa8..75345bc 100644
--- a/services/backend/apps/task/migrations/0001_initial.py
+++ b/services/backend/apps/task/migrations/0001_initial.py
@@ -1,8 +1,8 @@
-# Generated by Django 5.1.6 on 2025-03-02 10:28
+# Generated by Django 5.1.6 on 2025-03-03 09:46
 
 import apps.task.models
 import django.db.models.deletion
-import tinymce.models
+import mdeditor.fields
 import uuid
 from django.db import migrations, models
 
@@ -22,16 +22,17 @@ class Migration(migrations.Migration):
             name='CompetitionTask',
             fields=[
                 ('id', models.UUIDField(default=uuid.uuid4, editable=False, primary_key=True, serialize=False)),
-                ('in_competition_position', models.PositiveSmallIntegerField(blank=True, null=True)),
+                ('in_competition_position', models.PositiveSmallIntegerField(verbose_name='позиция в соревновании')),
                 ('title', models.CharField(max_length=50, verbose_name='заголовок')),
-                ('description', tinymce.models.HTMLField(max_length=300, verbose_name='описание')),
-                ('max_attempts', models.PositiveSmallIntegerField(blank=True, null=True)),
+                ('description', mdeditor.fields.MDTextField(verbose_name='описание')),
+                ('max_attempts', models.PositiveSmallIntegerField(blank=True, null=True, verbose_name='максимальное кол-во попыток')),
                 ('type', models.CharField(choices=[('input', 'Ввод правильного ответа'), ('checker', 'Ввод кода'), ('review', 'Ручная')], max_length=8, verbose_name='тип проверки')),
-                ('correct_answer_file', models.FileField(blank=True, null=True, upload_to=apps.task.models.CompetitionTask.answer_file_upload_to, verbose_name='файл с правильным ответом')),
-                ('points', models.IntegerField(blank=True, null=True, verbose_name='баллы за задание')),
-                ('answer_file_path', models.TextField(blank=True, default='stdout', help_text='Путь до файла в котором ожидается результат. Пример: stdout или ./output.txt', null=True, verbose_name='куда сделать вывод программы участнику')),
-                ('competition', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='competition.competition')),
-                ('reviewers', models.ManyToManyField(blank=True, to='review.reviewer')),
+                ('correct_answer_file', models.FileField(blank=True, help_text='Имеет смысл только при автоматической (ввод ответа или кода) проверке.', null=True, upload_to=apps.task.models.CompetitionTask.answer_file_upload_to, verbose_name='файл с правильным ответом')),
+                ('points', models.IntegerField(blank=True, null=True, verbose_name='общий балл за задание')),
+                ('answer_file_path', models.TextField(blank=True, default='stdout', help_text='Путь до файла в котором ожидается результат. Пример: stdout или ./output.txt. Имеет смысл только при автоматическом типе проверки.', null=True, verbose_name='куда сделать вывод программы участнику')),
+                ('submission_reviewers_count', models.PositiveSmallIntegerField(blank=True, default=1, null=True, verbose_name='кол-во проверяющих для зачета задачи')),
+                ('competition', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='competition.competition', verbose_name='привязанное соревнование')),
+                ('reviewers', models.ManyToManyField(blank=True, help_text='Справа отображаются действующие проверяющие, слева - доступные для выбора. Для перемещения можно кликнуть 2 раза по проверяющему. Имеет смысл только при ручном типе проверки.', to='review.reviewer', verbose_name='ревьюверы')),
             ],
             options={
                 'verbose_name': 'задание',
@@ -43,45 +44,48 @@ class Migration(migrations.Migration):
             fields=[
                 ('id', models.UUIDField(default=uuid.uuid4, editable=False, primary_key=True, serialize=False)),
                 ('file', models.FileField(upload_to=apps.task.models.CompetitionTaskAttachment.file_upload_at, verbose_name='файл')),
-                ('bind_at', models.FilePathField(verbose_name='путь сохранения')),
+                ('bind_at', models.CharField(max_length=255, verbose_name='путь сохранения')),
                 ('public', models.BooleanField(default=False, verbose_name='публичный')),
                 ('task', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='task.competitiontask', verbose_name='задание')),
             ],
             options={
-                'abstract': False,
+                'verbose_name': 'вложение',
+                'verbose_name_plural': 'вложения',
             },
         ),
         migrations.CreateModel(
             name='CompetitionTaskCriteria',
             fields=[
                 ('id', models.UUIDField(default=uuid.uuid4, editable=False, primary_key=True, serialize=False)),
-                ('name', models.TextField()),
-                ('slug', models.SlugField()),
-                ('description', models.TextField()),
-                ('max_value', models.PositiveSmallIntegerField()),
+                ('name', models.TextField(verbose_name='название')),
+                ('slug', models.SlugField(verbose_name='техническое название')),
+                ('description', models.TextField(verbose_name='описание критерии')),
+                ('max_value', models.PositiveSmallIntegerField(verbose_name='максимальное кол-во баллов')),
                 ('task', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='criteries', to='task.competitiontask')),
             ],
             options={
-                'abstract': False,
+                'verbose_name': 'критерий',
+                'verbose_name_plural': 'критерии',
             },
         ),
         migrations.CreateModel(
             name='CompetitionTaskSubmission',
             fields=[
                 ('id', models.UUIDField(default=uuid.uuid4, editable=False, primary_key=True, serialize=False)),
-                ('status', models.CharField(choices=[('sent', 'Sent'), ('checking', 'Checking'), ('checked', 'Checked')], default='sent', max_length=8, verbose_name='статус')),
-                ('content', models.FileField(upload_to=apps.task.models.CompetitionTaskSubmission.submission_content_upload_to)),
-                ('stdout', models.FileField(blank=True, null=True, upload_to=apps.task.models.CompetitionTaskSubmission.submission_stdout_upload_to)),
-                ('result', models.JSONField(blank=True, default=None, null=True)),
-                ('earned_points', models.IntegerField(blank=True, null=True)),
-                ('checked_at', models.DateTimeField(blank=True, null=True)),
-                ('plagiarism_checked', models.BooleanField(default=False)),
-                ('timestamp', models.DateTimeField(auto_now_add=True)),
-                ('task', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='task.competitiontask')),
-                ('user', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='user.user')),
+                ('status', models.CharField(choices=[('sent', 'Отправлено на проверку'), ('checking', 'Проверка'), ('checked', 'Проверено')], default='sent', max_length=8, verbose_name='статус')),
+                ('content', models.FileField(upload_to=apps.task.models.CompetitionTaskSubmission.submission_content_upload_to, verbose_name='содержание посылки')),
+                ('stdout', models.FileField(blank=True, help_text='Используется только при проверке чекером', null=True, upload_to=apps.task.models.CompetitionTaskSubmission.submission_stdout_upload_to, verbose_name='вывод программы')),
+                ('result', models.JSONField(blank=True, default=None, null=True, verbose_name='результат проверки')),
+                ('earned_points', models.IntegerField(blank=True, null=True, verbose_name='баллы за задание')),
+                ('checked_at', models.DateTimeField(blank=True, null=True, verbose_name='дата проверки')),
+                ('plagiarism_checked', models.BooleanField(default=False, verbose_name='проверено на плагиат')),
+                ('timestamp', models.DateTimeField(auto_now_add=True, verbose_name='дата отправки')),
+                ('task', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='task.competitiontask', verbose_name='задание')),
+                ('user', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='user.user', verbose_name='пользователь')),
             ],
             options={
-                'abstract': False,
+                'verbose_name': 'посылка',
+                'verbose_name_plural': 'посылки',
             },
         ),
     ]
diff --git a/services/backend/apps/task/migrations/0002_alter_competitiontasksubmission_options_and_more.py b/services/backend/apps/task/migrations/0002_alter_competitiontasksubmission_options_and_more.py
deleted file mode 100644
index 9cc1672..0000000
--- a/services/backend/apps/task/migrations/0002_alter_competitiontasksubmission_options_and_more.py
+++ /dev/null
@@ -1,71 +0,0 @@
-# Generated by Django 5.1.6 on 2025-03-02 12:09
-
-import apps.task.models
-import django.db.models.deletion
-from django.db import migrations, models
-
-
-class Migration(migrations.Migration):
-
-    dependencies = [
-        ('review', '0002_initial'),
-        ('task', '0001_initial'),
-        ('user', '0001_initial'),
-    ]
-
-    operations = [
-        migrations.AlterModelOptions(
-            name='competitiontasksubmission',
-            options={'verbose_name': 'посылка', 'verbose_name_plural': 'посылки'},
-        ),
-        migrations.AlterField(
-            model_name='competitiontask',
-            name='reviewers',
-            field=models.ManyToManyField(blank=True, help_text='Справа отображаются действующие проверяющие, слева - доступные для выбора. Для перемещения можно кликнуть 2 раза по проверяющему', to='review.reviewer', verbose_name='ревьюверы'),
-        ),
-        migrations.AlterField(
-            model_name='competitiontasksubmission',
-            name='checked_at',
-            field=models.DateTimeField(blank=True, null=True, verbose_name='дата проверки'),
-        ),
-        migrations.AlterField(
-            model_name='competitiontasksubmission',
-            name='content',
-            field=models.FileField(upload_to=apps.task.models.CompetitionTaskSubmission.submission_content_upload_to, verbose_name='содержание посылки'),
-        ),
-        migrations.AlterField(
-            model_name='competitiontasksubmission',
-            name='earned_points',
-            field=models.IntegerField(blank=True, null=True, verbose_name='баллы за задание'),
-        ),
-        migrations.AlterField(
-            model_name='competitiontasksubmission',
-            name='plagiarism_checked',
-            field=models.BooleanField(default=False, verbose_name='проверено на плагиат'),
-        ),
-        migrations.AlterField(
-            model_name='competitiontasksubmission',
-            name='result',
-            field=models.JSONField(blank=True, default=None, null=True, verbose_name='результат проверки'),
-        ),
-        migrations.AlterField(
-            model_name='competitiontasksubmission',
-            name='stdout',
-            field=models.FileField(blank=True, help_text='Используется только при проверке чекером', null=True, upload_to=apps.task.models.CompetitionTaskSubmission.submission_stdout_upload_to, verbose_name='вывод программы'),
-        ),
-        migrations.AlterField(
-            model_name='competitiontasksubmission',
-            name='task',
-            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='task.competitiontask', verbose_name='задание'),
-        ),
-        migrations.AlterField(
-            model_name='competitiontasksubmission',
-            name='timestamp',
-            field=models.DateTimeField(auto_now_add=True, verbose_name='дата отправки'),
-        ),
-        migrations.AlterField(
-            model_name='competitiontasksubmission',
-            name='user',
-            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='user.user', verbose_name='пользователь'),
-        ),
-    ]
diff --git a/services/backend/apps/task/migrations/0003_alter_competitiontask_description.py b/services/backend/apps/task/migrations/0003_alter_competitiontask_description.py
deleted file mode 100644
index 2dfa914..0000000
--- a/services/backend/apps/task/migrations/0003_alter_competitiontask_description.py
+++ /dev/null
@@ -1,19 +0,0 @@
-# Generated by Django 5.1.6 on 2025-03-02 12:23
-
-import tinymce.models
-from django.db import migrations
-
-
-class Migration(migrations.Migration):
-
-    dependencies = [
-        ('task', '0002_alter_competitiontasksubmission_options_and_more'),
-    ]
-
-    operations = [
-        migrations.AlterField(
-            model_name='competitiontask',
-            name='description',
-            field=tinymce.models.HTMLField(verbose_name='описание'),
-        ),
-    ]
diff --git a/services/backend/apps/task/migrations/0004_competitiontask_submission_reviewers_count_and_more.py b/services/backend/apps/task/migrations/0004_competitiontask_submission_reviewers_count_and_more.py
deleted file mode 100644
index 400255c..0000000
--- a/services/backend/apps/task/migrations/0004_competitiontask_submission_reviewers_count_and_more.py
+++ /dev/null
@@ -1,24 +0,0 @@
-# Generated by Django 5.1.6 on 2025-03-02 12:49
-
-import martor.models
-from django.db import migrations, models
-
-
-class Migration(migrations.Migration):
-
-    dependencies = [
-        ('task', '0003_alter_competitiontask_description'),
-    ]
-
-    operations = [
-        migrations.AddField(
-            model_name='competitiontask',
-            name='submission_reviewers_count',
-            field=models.PositiveSmallIntegerField(blank=True, default=1, null=True),
-        ),
-        migrations.AlterField(
-            model_name='competitiontask',
-            name='description',
-            field=martor.models.MartorField(verbose_name='описание'),
-        ),
-    ]
diff --git a/services/backend/apps/task/models.py b/services/backend/apps/task/models.py
index c0a4ea5..8f6936e 100644
--- a/services/backend/apps/task/models.py
+++ b/services/backend/apps/task/models.py
@@ -2,7 +2,7 @@ from uuid import uuid4
 
 from django.db import models
 from django.db.models import Count, Q
-from martor.models import MartorField
+from mdeditor.fields import MDTextField
 
 from apps.competition.models import Competition
 from apps.core.models import BaseModel
@@ -19,11 +19,19 @@ class CompetitionTask(BaseModel):
     def answer_file_upload_to(instance, filename) -> str:
         return f"tasks/{instance.id}/answer/{uuid4()}/{filename}"
 
-    in_competition_position = models.PositiveSmallIntegerField()
-    competition = models.ForeignKey(Competition, on_delete=models.CASCADE)
+    in_competition_position = models.PositiveSmallIntegerField(
+        verbose_name="позиция в соревновании"
+    )
+    competition = models.ForeignKey(
+        Competition,
+        on_delete=models.CASCADE,
+        verbose_name="привязанное соревнование",
+    )
     title = models.CharField(verbose_name="заголовок", max_length=50)
-    description = MartorField(verbose_name="описание")
-    max_attempts = models.PositiveSmallIntegerField(null=True, blank=True)
+    description = MDTextField(verbose_name="описание")
+    max_attempts = models.PositiveSmallIntegerField(
+        null=True, blank=True, verbose_name="максимальное кол-во попыток"
+    )
     type = models.CharField(
         choices=CompetitionTaskType, max_length=8, verbose_name="тип проверки"
     )
@@ -34,9 +42,10 @@ class CompetitionTask(BaseModel):
         null=True,
         blank=True,
         verbose_name="файл с правильным ответом",
+        help_text="Имеет смысл только при автоматической (ввод ответа или кода) проверке.",
     )
     points = models.IntegerField(
-        null=True, blank=True, verbose_name="баллы за задание"
+        null=True, blank=True, verbose_name="общий балл за задание"
     )
 
     # only when "checker" type
@@ -44,7 +53,10 @@ class CompetitionTask(BaseModel):
         null=True,
         blank=True,
         verbose_name="куда сделать вывод программы участнику",
-        help_text="Путь до файла в котором ожидается результат. Пример: stdout или ./output.txt",
+        help_text=(
+            "Путь до файла в котором ожидается результат. "
+            "Пример: stdout или ./output.txt. Имеет смысл только при автоматическом типе проверки."
+        ),
         default="stdout",
     )
 
@@ -53,10 +65,17 @@ class CompetitionTask(BaseModel):
         Reviewer,
         blank=True,
         verbose_name="ревьюверы",
-        help_text="Справа отображаются действующие проверяющие, слева - доступные для выбора. Для перемещения можно кликнуть 2 раза по проверяющему",
+        help_text=(
+            "Справа отображаются действующие проверяющие, слева - доступные для выбора. "
+            "Для перемещения можно кликнуть 2 раза по проверяющему. Имеет смысл только"
+            " при ручном типе проверки."
+        ),
     )
     submission_reviewers_count = models.PositiveSmallIntegerField(
-        default=1, null=True, blank=True
+        default=1,
+        null=True,
+        blank=True,
+        verbose_name="кол-во проверяющих для зачета задачи",
     )
 
     def __str__(self):
@@ -72,23 +91,36 @@ class CompetitionTaskCriteria(BaseModel):
         CompetitionTask, on_delete=models.CASCADE, related_name="criteries"
     )
 
-    name = models.TextField()
-    slug = models.SlugField()
-    description = models.TextField()
-    max_value = models.PositiveSmallIntegerField()
+    name = models.TextField(verbose_name="название")
+    slug = models.SlugField(verbose_name="техническое название")
+    description = models.TextField(verbose_name="описание критерии")
+    max_value = models.PositiveSmallIntegerField(
+        verbose_name="максимальное кол-во баллов"
+    )
+
+    def __str__(self):
+        return self.name
+
+    class Meta:
+        verbose_name = "критерий"
+        verbose_name_plural = "критерии"
 
 
 class CompetitionTaskAttachment(BaseModel):
-    def file_upload_at(instance, filename):
-        return f"attachment/{instance.id}/file/{filename}"
+    def file_upload_at(instance, filename) -> str:
+        return f"attachments/{instance.id}/file/{filename}"
 
     task = models.ForeignKey(
         CompetitionTask, on_delete=models.CASCADE, verbose_name="задание"
     )
     file = models.FileField(upload_to=file_upload_at, verbose_name="файл")
-    bind_at = models.FilePathField(verbose_name="путь сохранения")
+    bind_at = models.CharField(verbose_name="путь сохранения", max_length=255)
     public = models.BooleanField(default=False, verbose_name="публичный")
 
+    class Meta:
+        verbose_name = "вложение"
+        verbose_name_plural = "вложения"
+
 
 class CompetitionTaskSubmission(BaseModel):
     class StatusChoices(models.TextChoices):
diff --git a/services/backend/apps/task/tasks.py b/services/backend/apps/task/tasks.py
index 2f3d50c..86588f4 100644
--- a/services/backend/apps/task/tasks.py
+++ b/services/backend/apps/task/tasks.py
@@ -1,29 +1,38 @@
+import hashlib
+
 import httpx
 from celery import shared_task
+from django.conf import settings
 from django.core.files.base import ContentFile
 
-from django.conf import settings
+from apps.task.models import CompetitionTaskSubmission
 
 
 @shared_task(bind=True, max_retries=3)
 def analyze_data_task(self, submission_id):
-    from .models import CompetitionTaskSubmission
-
     submission = CompetitionTaskSubmission.objects.get(id=submission_id)
     try:
-        code = submission.content.read().decode()
+        code_url = f"{settings.MINIO_DEFAULT_CUSTOM_ENDPOINT_URL}{submission.content.path}"
         files = [
-            (f.name, f.file.open("rb"))
-            for f in submission.task.attachments.filter(public=True)
+            {
+                "url": f"{settings.MINIO_DEFAULT_CUSTOM_ENDPOINT_URL}{attachment.path}",
+                "bind_path": attachment.bind_at,
+            }
+            for attachment in submission.task.attachments.filter(
+                bind_path__isnull=False
+            )
         ]
 
         response = httpx.post(
             f"{settings.CHECKER_API_ENDPOINT}/execute",
-            files=[("files", (f.name, f)) for f in files]
-            + [
-                ("code", code),
-                ("expected_hash", submission.task.correct_answer_hash),
-            ],
+            json={
+                "files": files,
+                "code_url": code_url,
+                "answer_file_path": submission.task.answer_file_path,
+                "expected_hash": hashlib.sha256(
+                    submission.task.correct_answer_file.read().encode()
+                ).hexdigest(),
+            },
             timeout=30,
         )
         response.raise_for_status()
@@ -40,7 +49,7 @@ def analyze_data_task(self, submission_id):
         )
         submission.status = CompetitionTaskSubmission.StatusChoices.CHECKED
 
-    except httpx.RequestError as e:
+    except httpx.RequestError:
         self.retry(countdown=2**self.request.retries)
     except Exception as e:
         submission.result = {"error": str(e), "success": False}
diff --git a/services/backend/apps/team/migrations/0001_initial.py b/services/backend/apps/team/migrations/0001_initial.py
index 7e4fca4..02c49b1 100644
--- a/services/backend/apps/team/migrations/0001_initial.py
+++ b/services/backend/apps/team/migrations/0001_initial.py
@@ -1,4 +1,4 @@
-# Generated by Django 5.1.6 on 2025-03-02 10:28
+# Generated by Django 5.1.6 on 2025-03-03 09:46
 
 import django.db.models.deletion
 import uuid
diff --git a/services/backend/apps/user/apps.py b/services/backend/apps/user/apps.py
index e38650e..21a3488 100644
--- a/services/backend/apps/user/apps.py
+++ b/services/backend/apps/user/apps.py
@@ -6,3 +6,6 @@ class UsersConfig(AppConfig):
     name = "apps.user"
     label = "user"
     verbose_name = "Пользователи (веб)"
+
+    def ready(self):
+        import apps.user.signals
diff --git a/services/backend/apps/user/migrations/0001_initial.py b/services/backend/apps/user/migrations/0001_initial.py
index fe09ceb..6b7f152 100644
--- a/services/backend/apps/user/migrations/0001_initial.py
+++ b/services/backend/apps/user/migrations/0001_initial.py
@@ -1,4 +1,4 @@
-# Generated by Django 5.1.6 on 2025-03-02 10:28
+# Generated by Django 5.1.6 on 2025-03-03 09:46
 
 import uuid
 from django.db import migrations, models
@@ -9,6 +9,7 @@ class Migration(migrations.Migration):
     initial = True
 
     dependencies = [
+        ('achievement', '0001_initial'),
     ]
 
     operations = [
@@ -16,11 +17,13 @@ class Migration(migrations.Migration):
             name='User',
             fields=[
                 ('id', models.UUIDField(default=uuid.uuid4, editable=False, primary_key=True, serialize=False)),
+                ('avatar', models.ImageField(blank=True, null=True, upload_to='', verbose_name='аватар')),
                 ('email', models.EmailField(max_length=254, unique=True, verbose_name='почта')),
                 ('username', models.SlugField(unique=True, verbose_name='юзернейм')),
                 ('password', models.TextField(verbose_name='пароль')),
-                ('created_at', models.DateTimeField(auto_now=True)),
-                ('status', models.CharField(choices=[('student', 'Student'), ('metodist', 'Metodist')], default='student', max_length=10)),
+                ('created_at', models.DateTimeField(auto_now=True, verbose_name='дата создания')),
+                ('status', models.CharField(choices=[('student', 'Участник соревнований'), ('metodist', 'Методист (составитель заданий)')], default='student', max_length=10, verbose_name='роль участника')),
+                ('achievements', models.ManyToManyField(blank=True, to='achievement.achievement', verbose_name='ачивки пользователя')),
             ],
             options={
                 'verbose_name': 'пользователь',
diff --git a/services/backend/apps/user/migrations/0002_user_achievements.py b/services/backend/apps/user/migrations/0002_user_achievements.py
deleted file mode 100644
index 33adefa..0000000
--- a/services/backend/apps/user/migrations/0002_user_achievements.py
+++ /dev/null
@@ -1,19 +0,0 @@
-# Generated by Django 5.1.6 on 2025-03-02 12:16
-
-from django.db import migrations, models
-
-
-class Migration(migrations.Migration):
-
-    dependencies = [
-        ('achievement', '0001_initial'),
-        ('user', '0001_initial'),
-    ]
-
-    operations = [
-        migrations.AddField(
-            model_name='user',
-            name='achievements',
-            field=models.ManyToManyField(blank=True, to='achievement.achievement', verbose_name='ачивки пользователя'),
-        ),
-    ]
diff --git a/services/backend/apps/user/models.py b/services/backend/apps/user/models.py
index aaa0ec0..6a7a0c5 100644
--- a/services/backend/apps/user/models.py
+++ b/services/backend/apps/user/models.py
@@ -5,17 +5,20 @@ from apps.achievement.models import Achievement
 from apps.core.models import BaseModel
 
 
-class UserRole(models.Choices):
-    STUDENT = "student"
-    METODIST = "metodist"
+class UserRole(models.TextChoices):
+    STUDENT = "student", "Участник соревнований"
+    METODIST = "metodist", "Методист (составитель заданий)"
 
 
 class User(BaseModel):
+    avatar = models.ImageField(verbose_name="аватар", null=True, blank=True)
     email = models.EmailField(unique=True, verbose_name="почта")
     username = models.SlugField(unique=True, verbose_name="юзернейм")
     password = models.TextField(verbose_name="пароль")
 
-    created_at = models.DateTimeField(auto_now=True)
+    created_at = models.DateTimeField(
+        auto_now=True, verbose_name="дата создания"
+    )
 
     achievements = models.ManyToManyField(
         Achievement, blank=True, verbose_name="ачивки пользователя"
@@ -29,7 +32,10 @@ class User(BaseModel):
         return check_password(self.password, password)
 
     status = models.CharField(
-        max_length=10, choices=UserRole, default="student"
+        max_length=10,
+        choices=UserRole.choices,
+        default="student",
+        verbose_name="роль участника",
     )
 
     def __str__(self) -> str:
diff --git a/services/backend/apps/user/signals.py b/services/backend/apps/user/signals.py
new file mode 100644
index 0000000..a6f5ff6
--- /dev/null
+++ b/services/backend/apps/user/signals.py
@@ -0,0 +1,14 @@
+from django.db.models.signals import post_save
+from django.dispatch import receiver
+
+from apps.achievement.models import Achievement, UserAchievement
+from apps.user.models import User
+
+
+@receiver(post_save, sender=User)
+def assign_welcome_achievement(sender, instance, created, **kwargs):
+    if created:
+        welcome_achievement = Achievement.objects.get(slug="welcome")
+        UserAchievement.objects.create(
+            user=instance, achievement=welcome_achievement
+        )
diff --git a/services/backend/config/settings.py b/services/backend/config/settings.py
index 243d5ee..cb0d18e 100644
--- a/services/backend/config/settings.py
+++ b/services/backend/config/settings.py
@@ -7,8 +7,9 @@ from pathlib import Path
 
 import django_stubs_ext
 import environ
-from health_check.plugins import plugin_dir
 from django.utils.translation import gettext_lazy as _
+from health_check.plugins import plugin_dir
+
 from integrations.checker.healthcheck import CheckerHealthCheck
 
 BASE_DIR = Path(__file__).resolve().parent.parent
@@ -270,6 +271,8 @@ DEFAULT_CHARSET = "utf-8"
 
 FORCE_SCRIPT_NAME = None
 
+X_FRAME_OPTIONS = "SAMEORIGIN"
+
 INTERNAL_IPS = env(
     "DJANGO_INTERNAL_IPS",
     list,
@@ -437,8 +440,7 @@ INSTALLED_APPS = [
     "django_guid",
     "ninja",
     "minio_storage",
-    "tinymce",
-    "martor",
+    "mdeditor",
     # Internal apps
     "apps.core",
     "apps.user",
@@ -449,65 +451,6 @@ INSTALLED_APPS = [
     "apps.achievement",
 ]
 
-# tinymce
-TINYMCE_DEFAULT_CONFIG = {
-    "theme": "silver",
-    "height": 500,
-    "menubar": False,
-    "plugins": "advlist,autolink,lists,link,image,charmap,print,preview,anchor,"
-    "searchreplace,visualblocks,code,fullscreen,insertdatetime,media,table,paste,"
-    "code,help,wordcount,markdown",
-    "toolbar": "undo redo | formatselect | "
-    "bold italic backcolor | alignleft aligncenter "
-    "alignright alignjustify | bullist numlist outdent indent | "
-    "removeformat | help",
-    "skin": "oxide-dark",
-    "content_css": "dark",
-    "textpattern_patterns": [
-        {"start": "*", "end": "*", "format": "italic"},
-        {"start": "**", "end": "**", "format": "bold"},
-        {"start": "#", "format": "h1"},
-        {"start": "##", "format": "h2"},
-        {"start": "###", "format": "h3"},
-        {"start": "####", "format": "h4"},
-        {"start": "#####", "format": "h5"},
-        {"start": "######", "format": "h6"},
-        {"start": "1. ", "cmd": "InsertOrderedList"},
-        {"start": "* ", "cmd": "InsertUnorderedList"},
-        {"start": "- ", "cmd": "InsertUnorderedList"},
-    ],
-}
-
-# martor
-
-MARTOR_THEME = "bootstrap"
-
-MARTOR_ENABLE_CONFIGS = {
-    "emoji": "true",  # to enable/disable emoji icons.
-    "imgur": "true",  # to enable/disable imgur/custom uploader.
-    "mention": "false",  # to enable/disable mention
-    "jquery": "true",  # to include/revoke jquery (require for admin default django)
-    "living": "false",  # to enable/disable live updates in preview
-    "spellcheck": "false",  # to enable/disable spellcheck in form textareas
-    "hljs": "true",  # to enable/disable hljs highlighting in preview
-}
-
-MARTOR_TOOLBAR_BUTTONS = [
-    "bold",
-    "italic",
-    "horizontal",
-    "heading",
-    "pre-code",
-    "blockquote",
-    "unordered-list",
-    "ordered-list",
-    "link",
-    "emoji",
-    "direct-mention",
-    "toggle-maximize",
-    "help",
-]
-
 # GUID
 
 DJANGO_GUID = {
diff --git a/services/backend/config/urls.py b/services/backend/config/urls.py
index 6fe96c2..73e9ec2 100644
--- a/services/backend/config/urls.py
+++ b/services/backend/config/urls.py
@@ -12,10 +12,8 @@ admin.site.index_title = "DataRush"
 
 
 urlpatterns = [
-    # tinymce
-    path("tinymce/", include("tinymce.urls")),
-    # martor
-    path("martor/", include("martor.urls")),
+    # mdeditor
+    path(r"mdeditor/", include("mdeditor.urls")),
     # Admin urls
     path("admin/", admin.site.urls),
     # API urls
diff --git a/services/backend/pyproject.toml b/services/backend/pyproject.toml
index d3b2371..23fefd0 100644
--- a/services/backend/pyproject.toml
+++ b/services/backend/pyproject.toml
@@ -12,14 +12,13 @@ dependencies = [
  "django-extensions>=3.2.3",
  "django-guid>=3.5.0",
  "django-health-check>=3.18.3",
+ "django-mdeditor>=0.1.20",
  "django-minio-storage>=0.5.7",
  "django-ninja>=1.3.0",
  "django-pagedown>=2.2.1",
  "django-stubs-ext>=5.1.3",
- "django-tinymce>=4.1.0",
  "gunicorn>=23.0.0",
  "httpx>=0.28.1",
- "martor>=1.6.45",
  "pillow>=11.1.0",
  "psycopg2-binary>=2.9.10",
  "pydantic>=2.10.5",
diff --git a/services/backend/scripts/initdb b/services/backend/scripts/initdb
index f2d64eb..146732a 100755
--- a/services/backend/scripts/initdb
+++ b/services/backend/scripts/initdb
@@ -9,3 +9,5 @@ fi
 if [ "$DJANGO_CREATE_SUPERUSER" = "True" ]; then
     python manage.py createsuperuser --noinput --username "$DJANGO_SUPERUSER_USERNAME" --email "$DJANGO_SUPERUSER_EMAIL" || true
 fi
+
+python manage.py init_achievments
\ No newline at end of file
diff --git a/services/backend/scripts/initdb_advanced b/services/backend/scripts/initdb_advanced
new file mode 100755
index 0000000..fe030f2
--- /dev/null
+++ b/services/backend/scripts/initdb_advanced
@@ -0,0 +1,14 @@
+#!/bin/sh
+
+python manage.py migrate
+if [ $? -ne 0 ]; then
+    echo "Migration failed"
+    exit 1
+fi
+
+if [ "$DJANGO_CREATE_SUPERUSER" = "True" ]; then
+    python manage.py createsuperuser --noinput --username "$DJANGO_SUPERUSER_USERNAME" --email "$DJANGO_SUPERUSER_EMAIL" || true
+fi
+
+python manage.py init_achievments
+python manage.py generate_pretty_data
\ No newline at end of file
diff --git a/services/checker/.env.template b/services/checker/.env.template
new file mode 100644
index 0000000..9dac72a
--- /dev/null
+++ b/services/checker/.env.template
@@ -0,0 +1,4 @@
+# Change all vars before going to production and remove all comments (!)
+# Below all environment variables and default values
+
+DOCKER_IMAGE=gitlab.prodcontest.ru:5050/team-15/project/custom-python
diff --git a/services/checker/Dockerfile b/services/checker/Dockerfile
index d4266d1..d0f7ea4 100644
--- a/services/checker/Dockerfile
+++ b/services/checker/Dockerfile
@@ -30,7 +30,7 @@ ENV PYTHONDONTWRITEBYTECODE=1 \
     PYTHONOPTIMIZE=2 \
     PATH="/opt/venv/bin:$PATH"
 
-EXPOSE 8080
+EXPOSE 8000
 
 HEALTHCHECK --interval=30s --timeout=5s --start-period=5s --start-interval=2s --retries=3 \
     CMD wget --no-verbose --tries=1 --spider http://127.0.0.1:8000/health || exit 1
diff --git a/services/checker/config.py b/services/checker/config.py
index b297cc8..5f88007 100644
--- a/services/checker/config.py
+++ b/services/checker/config.py
@@ -7,12 +7,6 @@ BASE_DIR = Path(__file__).resolve().parent
 
 load_dotenv(BASE_DIR / ".env")
 
-REGISTRY_LOGIN = os.getenv("REGISTRY_USERNAME", None)
-
-REGISTRY_PASSWORD = os.getenv("REGISTRY_USERNAME", None)
-
-REGISTRY_URL = os.getenv("REGISTRY_URL", "gitlab.prodcontest.ru:5050")
-
 DOCKER_IMAGE = os.getenv(
-    "IMAGE", default="gitlab.prodcontest.ru:5050/team-15/project/custom-python"
+    "DOCKER_IMAGE", default="gitlab.prodcontest.ru:5050/team-15/project/custom-python"
 )
diff --git a/services/checker/main.py b/services/checker/main.py
index bd10819..a1d05fa 100644
--- a/services/checker/main.py
+++ b/services/checker/main.py
@@ -1,5 +1,5 @@
 from fastapi import FastAPI, HTTPException, status
-from pydantic import BaseModel, Field, HttpUrl, constr
+from pydantic import BaseModel, Field, HttpUrl
 import aiohttp
 import asyncio
 import docker
@@ -22,11 +22,6 @@ app = FastAPI()
 docker_client = docker.from_env()
 logger = logging.getLogger(__name__)
 logging.basicConfig(level=logging.INFO)
-docker_client.login(
-    username=config.REGISTRY_LOGIN,
-    password=config.REGISTRY_PASSWORD,
-    registry=config.REGISTRY_URL,
-)
 
 
 class FileDetails(BaseModel):
@@ -93,9 +88,7 @@ async def download_file(
     session: aiohttp.ClientSession, url: str, dest_path: str
 ) -> None:
     try:
-        async with session.get(
-            url, timeout=aiohttp.ClientTimeout(total=30)
-        ) as resp:
+        async with session.get(url, timeout=aiohttp.ClientTimeout(total=30)) as resp:
             if resp.status != 200:
                 raise HTTPException(
                     status_code=status.HTTP_400_BAD_REQUEST,
@@ -276,9 +269,7 @@ async def execute_code(request: ExecutionRequest) -> ExecutionResponse:
         return ExecutionResponse(
             success=success,
             hash_match=(
-                result_hash == request.expected_hash
-                if request.expected_hash
-                else None
+                result_hash == request.expected_hash if request.expected_hash else None
             ),
             output=output[:5000],
             result_hash=result_hash,
diff --git a/services/frontend/src/pages/CompetitionSession/components/CompetitionHeader/index.tsx b/services/frontend/src/pages/CompetitionSession/components/CompetitionHeader/index.tsx
index 96f990b..d4bab74 100644
--- a/services/frontend/src/pages/CompetitionSession/components/CompetitionHeader/index.tsx
+++ b/services/frontend/src/pages/CompetitionSession/components/CompetitionHeader/index.tsx
@@ -2,18 +2,32 @@ import React from 'react';
 import { Link } from 'react-router-dom';
 import { Task } from '@/shared/types/task';
 import { ArrowLeft } from 'lucide-react'; 
+import { useNavigate } from 'react-router-dom';
 
 interface CompetitionHeaderProps {
   title: string;
   tasks: Task[];
   competitionId: string;
+  setAnswer: (value: string) => void;
+  setSelectedFile: (file: File | null) => void;
 }
 
 const CompetitionHeader: React.FC<CompetitionHeaderProps> = ({ 
   title,
   tasks, 
-  competitionId 
+  competitionId,
+  setAnswer,
+  setSelectedFile
 }) => {
+  const navigate = useNavigate();
+
+  const handleTaskSelect = (taskId: string) => {
+    setAnswer("");
+    setSelectedFile(null);
+    console.log("SETTER ERROR")
+    navigate(`/competition/${competitionId}/tasks/${taskId}`);
+  }
+
   return (
     <header className="bg-white shadow-sm sticky top-0 z-30 w-full">
       <div className="mx-auto max-w-6xl px-4">
@@ -23,7 +37,6 @@ const CompetitionHeader: React.FC<CompetitionHeaderProps> = ({
             className="flex items-center text-gray-600 hover:text-gray-900 transition-colors font-hse-sans text-sm"
           >
             <ArrowLeft className="h-4 w-4 mr-1" />
-            Обратно
           </Link>
           
           <h1 className="font-hse-sans text-xl font-semibold text-center flex-1">
@@ -35,16 +48,16 @@ const CompetitionHeader: React.FC<CompetitionHeaderProps> = ({
         
         <div className="flex items-center justify-center gap-4 pb-4 overflow-x-auto no-scrollbar">
           {tasks.map((task) => (
-            <Link
-              key={task.id}
-              to={`/competition/${competitionId}/tasks/${task.id}`}
-              className={`text-[var(--color-task-text-uncleared)] bg-[var(--color-task-uncleared)]
-                rounded-lg px-3 py-1.5 font-medium text-sm font-hse-sans cursor-pointer 
-                transition-all hover:brightness-95 flex-shrink-0
-                `}
-            >
-              {task.in_competition_position}
-            </Link>
+          <button
+            key={task.id}
+            className={`text-[var(--color-task-text-uncleared)] bg-[var(--color-task-uncleared)]
+              rounded-lg px-3 py-1.5 font-medium text-sm font-hse-sans cursor-pointer 
+              transition-all hover:brightness-95 flex-shrink-0
+              `}
+            onClick={() => handleTaskSelect(task.id)}
+          >
+            {task.in_competition_position}
+          </button>
           ))}
         </div>
       </div>
diff --git a/services/frontend/src/pages/CompetitionSession/index.tsx b/services/frontend/src/pages/CompetitionSession/index.tsx
index 09fc40c..eb80913 100644
--- a/services/frontend/src/pages/CompetitionSession/index.tsx
+++ b/services/frontend/src/pages/CompetitionSession/index.tsx
@@ -4,6 +4,7 @@ import CompetitionHeader from "./components/CompetitionHeader";
 import TaskContent from "./components/TaskContent";
 import TaskSolution from "./modules/TaskSolution";
 import { getCompetitionTasks, submitTaskSolution } from "@/shared/api/session";
+import { getCompetition } from "@/shared/api/competitions";
 import { Loader2 } from "lucide-react";
 import { useQuery, useMutation, useQueryClient } from "@tanstack/react-query";
 import { TaskType } from "@/shared/types/task";
@@ -15,6 +16,12 @@ const CompetitionSession = () => {
   const competitionId = id || "";
   const queryClient = useQueryClient();
 
+  const competitionQuery = useQuery({
+    queryKey: ["competition", competitionId],
+    queryFn: () => getCompetition(competitionId),
+    enabled: !!competitionId,
+  });
+
   const tasksQuery = useQuery({
     queryKey: ["competitionTasks", competitionId],
     queryFn: () => getCompetitionTasks(competitionId),
@@ -46,9 +53,12 @@ const CompetitionSession = () => {
     }
   });
 
+  const competition = competitionQuery.data;
   const tasks = tasksQuery.data || [];
-  const isLoading = tasksQuery.isLoading;
-  const error = tasksQuery.error ? "Не удалось загрузить задания. Пожалуйста, попробуйте позже." : null;
+  const isLoading = tasksQuery.isLoading || competitionQuery.isLoading;
+  const error = tasksQuery.error || competitionQuery.error 
+    ? "Не удалось загрузить данные. Пожалуйста, попробуйте позже." 
+    : null;
 
   const currentTask = tasks.find((t) => t.id === taskId) || null;
 
@@ -77,12 +87,16 @@ const CompetitionSession = () => {
     submitMutation.mutate();
   };
 
+  const competitionTitle = competition?.title || "Загрузка соревнования...";
+
   return (
     <div className="flex min-h-screen flex-col">
       <CompetitionHeader
-        title="Олимпиада DANO 2025. Индивидуальный этап"
+        title={competitionTitle}
         tasks={tasks}
         competitionId={competitionId}
+        setAnswer={setAnswer}
+        setSelectedFile={setSelectedFile}
       />
 
       <main className="flex-1 bg-[#F8F8F8] pb-8">
diff --git a/services/frontend/src/pages/CompetitionSession/modules/TaskSolution/components/ActionButtons/index.tsx b/services/frontend/src/pages/CompetitionSession/modules/TaskSolution/components/ActionButtons/index.tsx
index ca1953e..cf02e94 100644
--- a/services/frontend/src/pages/CompetitionSession/modules/TaskSolution/components/ActionButtons/index.tsx
+++ b/services/frontend/src/pages/CompetitionSession/modules/TaskSolution/components/ActionButtons/index.tsx
@@ -1,14 +1,19 @@
 import React from 'react';
 import { Button } from "@/components/ui/button";
+import { Loader2 } from "lucide-react";
 
 interface ActionButtonsProps {
   onSubmit: () => void;
   onHistoryClick: () => void;
+  isSubmitting?: boolean;
+  hasSubmissionsLeft?: boolean;
 }
 
 const ActionButtons: React.FC<ActionButtonsProps> = ({ 
   onSubmit,
-  onHistoryClick
+  onHistoryClick,
+  isSubmitting = false,
+  hasSubmissionsLeft = true
 }) => {
   return (
     <div className="flex gap-8">
@@ -16,15 +21,31 @@ const ActionButtons: React.FC<ActionButtonsProps> = ({
         variant="ghost" 
         className="font-hse-sans bg-white hover:bg-gray-100"
         onClick={onHistoryClick}
+        disabled={isSubmitting}
       >
         История
       </Button>
-      <Button 
-        onClick={onSubmit}
-        className="font-hse-sans flex-grow" 
-      >
-        Отправить решение
-      </Button>
+      
+      {hasSubmissionsLeft ? (
+        <Button 
+          onClick={onSubmit}
+          className="font-hse-sans flex-grow" 
+          disabled={isSubmitting}
+        >
+          {isSubmitting ? (
+            <>
+              <Loader2 className="mr-2 h-4 w-4 animate-spin" />
+              Отправка...
+            </>
+          ) : (
+            "Отправить решение"
+          )}
+        </Button>
+      ) : (
+        <div className="flex-grow text-right text-gray-500 flex items-center justify-end font-hse-sans">
+          Лимит посылок исчерпан
+        </div>
+      )}
     </div>
   );
 };
diff --git a/services/frontend/src/pages/CompetitionSession/modules/TaskSolution/components/FileSolution/index.tsx b/services/frontend/src/pages/CompetitionSession/modules/TaskSolution/components/FileSolution/index.tsx
index 8f97216..a843612 100644
--- a/services/frontend/src/pages/CompetitionSession/modules/TaskSolution/components/FileSolution/index.tsx
+++ b/services/frontend/src/pages/CompetitionSession/modules/TaskSolution/components/FileSolution/index.tsx
@@ -8,6 +8,7 @@ interface FileSolutionProps {
   fileInputRef: React.RefObject<HTMLInputElement>;
   existingFileUrl?: string | null; 
   onClearExistingFile?: () => void; // New prop to clear existing file URL
+  firstSolution: boolean
 }
 
 const FileSolution: React.FC<FileSolutionProps> = ({ 
@@ -15,7 +16,8 @@ const FileSolution: React.FC<FileSolutionProps> = ({
   setSelectedFile, 
   fileInputRef,
   existingFileUrl = null,
-  onClearExistingFile
+  onClearExistingFile,
+  firstSolution
 }) => {
   const handleFileChange = (event: React.ChangeEvent<HTMLInputElement>) => {
     if (event.target.files && event.target.files[0]) {
@@ -59,9 +61,6 @@ const FileSolution: React.FC<FileSolutionProps> = ({
     }
   };
 
-  const handleSelectNewFile = () => {
-    fileInputRef.current?.click();
-  };
 
   const fileName = selectedFile 
     ? selectedFile.name 
@@ -69,7 +68,7 @@ const FileSolution: React.FC<FileSolutionProps> = ({
       ? existingFileUrl.split('/').pop() || 'file' 
       : '';
 
-  const hasFile = !!selectedFile || !!existingFileUrl;
+  const hasFile = !!selectedFile || (!!existingFileUrl && !firstSolution);
 
   return (
     <>
@@ -87,7 +86,7 @@ const FileSolution: React.FC<FileSolutionProps> = ({
             <FileIcon size={28} className="text-black mb-2" />
             <span className="text-sm text-gray-700 font-medium mb-1 font-hse-sans">{fileName}</span>
             
-            <div className="flex items-center mt-2">
+            <div className="flex flex-col justify-center mt-2">
               {existingFileUrl && !selectedFile && (
                 <a 
                   href={existingFileUrl}
@@ -99,7 +98,7 @@ const FileSolution: React.FC<FileSolutionProps> = ({
                 </a>
               )}
               
-              {selectedFile ? (
+              {selectedFile || existingFileUrl ? (
                 <Button 
                   variant="ghost" 
                   className="text-sm p-0 h-auto hover:bg-transparent font-hse-sans"
@@ -107,23 +106,6 @@ const FileSolution: React.FC<FileSolutionProps> = ({
                 >
                   Очистить
                 </Button>
-              ) : existingFileUrl ? (
-                <div className="flex gap-3">
-                  <Button 
-                    variant="ghost" 
-                    className="text-sm p-0 h-auto hover:bg-transparent font-hse-sans"
-                    onClick={handleSelectNewFile}
-                  >
-                    Выбрать другой файл
-                  </Button>
-                  <Button 
-                    variant="ghost" 
-                    className="text-sm p-0 h-auto hover:bg-transparent font-hse-sans"
-                    onClick={handleClearFile}
-                  >
-                    Очистить
-                  </Button>
-                </div>
               ) : null}
             </div>
           </div>
diff --git a/services/frontend/src/pages/CompetitionSession/modules/TaskSolution/components/SolutionHistorySheet/index.tsx b/services/frontend/src/pages/CompetitionSession/modules/TaskSolution/components/SolutionHistorySheet/index.tsx
index 870d511..ed88c68 100644
--- a/services/frontend/src/pages/CompetitionSession/modules/TaskSolution/components/SolutionHistorySheet/index.tsx
+++ b/services/frontend/src/pages/CompetitionSession/modules/TaskSolution/components/SolutionHistorySheet/index.tsx
@@ -1,9 +1,9 @@
 import React from 'react';
 import { Sheet, SheetClose, SheetContent, SheetHeader, SheetTitle } from "@/components/ui/sheet";
 import { Button } from "@/components/ui/button";
-import { X } from "lucide-react";
+import { X, Check } from "lucide-react";
 import SolutionStatus from '../SolutionStatus';
-import { Solution, TaskType } from '@/shared/types/task';
+import { Solution } from '@/shared/types/task';
 
 interface SolutionHistorySheetProps {
   isOpen: boolean;
@@ -18,7 +18,7 @@ const SolutionHistorySheet: React.FC<SolutionHistorySheetProps> = ({
   onOpenChange,
   solutions,
   maxPoints,
-  onSolutionSelect
+  onSolutionSelect,
 }) => {
   return (
     <Sheet open={isOpen} onOpenChange={onOpenChange}>
@@ -39,10 +39,10 @@ const SolutionHistorySheet: React.FC<SolutionHistorySheetProps> = ({
             solutions.map((solution, index) => (
               <div 
                 key={solution.id || index} 
-                className="w-full cursor-pointer transition-transform hover:scale-[1.01]" 
+                className={`w-full cursor-pointer transition-transform hover:scale-[1.01] relative`}
                 onClick={() => {
                   onSolutionSelect(solution);
-                  onOpenChange(false); 
+                  onOpenChange(false);
                 }}
               >
                 <SolutionStatus solution={solution} maxPoints={maxPoints} />
diff --git a/services/frontend/src/pages/CompetitionSession/modules/TaskSolution/index.tsx b/services/frontend/src/pages/CompetitionSession/modules/TaskSolution/index.tsx
index 833e1d2..5267dbb 100644
--- a/services/frontend/src/pages/CompetitionSession/modules/TaskSolution/index.tsx
+++ b/services/frontend/src/pages/CompetitionSession/modules/TaskSolution/index.tsx
@@ -1,4 +1,4 @@
-import React, { useState, useRef } from 'react';
+import React, { useState, useRef, useEffect } from 'react';
 import { useParams } from 'react-router-dom';
 import { Task, TaskType, Solution } from '@/shared/types/task';
 import { useQuery } from '@tanstack/react-query';
@@ -17,6 +17,7 @@ interface TaskSolutionProps {
   selectedFile: File | null;
   setSelectedFile: (file: File | null) => void;
   onSubmit: () => void;
+  isSubmitting?: boolean;
 }
 
 const TaskSolution: React.FC<TaskSolutionProps> = ({ 
@@ -26,11 +27,14 @@ const TaskSolution: React.FC<TaskSolutionProps> = ({
   selectedFile,
   setSelectedFile, 
   onSubmit,
+  isSubmitting = false
 }) => {
   const fileInputRef = useRef<HTMLInputElement>(null);
   const [isHistoryOpen, setIsHistoryOpen] = useState(false);
   const [selectedSolutionUrl, setSelectedSolutionUrl] = useState<string | null>(null);
+  const [displayedSolution, setDisplayedSolution] = useState<Solution | null>(null);
   const { id: competitionId } = useParams<{ id: string }>();
+  const prevTaskIdRef = useRef<string | null>(null);
 
   const solutionsQuery = useQuery({
     queryKey: ['solutionHistory', competitionId, task.id],
@@ -39,44 +43,87 @@ const TaskSolution: React.FC<TaskSolutionProps> = ({
   });
 
   const solutionHistory = solutionsQuery.data || [];
+  
+  const maxAttempts = task.max_attempts || -1;
+  const submissionsUsed = solutionHistory.length;
+  const submissionsLeft = Math.max(0, maxAttempts - submissionsUsed);
+  const hasSubmissionsLeft = submissionsLeft > 0;
+
+  useEffect(() => {
+    if (solutionHistory.length > 0 && !displayedSolution) {
+      const latestSolution = solutionHistory[solutionHistory.length - 1];
+      setDisplayedSolution(latestSolution);
+    }
+  }, [solutionHistory, displayedSolution]);
+
+  useEffect(() => {
+    if (prevTaskIdRef.current !== task.id) {
+      setDisplayedSolution(null);
+      setSelectedSolutionUrl(null);
+      
+      if (solutionHistory.length > 0) {
+        const latestSolution = solutionHistory[solutionHistory.length - 1];
+        setDisplayedSolution(latestSolution);
+      }
+      
+      prevTaskIdRef.current = task.id;
+    }
+  }, [task.id, solutionHistory]);
+
+  useEffect(() => {
+    if (solutionHistory.length > 0 && 
+        (!displayedSolution || 
+         (solutionHistory[solutionHistory.length - 1].id !== displayedSolution.id &&
+          displayedSolution.id === solutionHistory[solutionHistory.length - 2]?.id))) {
+      setDisplayedSolution(solutionHistory[solutionHistory.length - 1]);
+    }
+  }, [solutionHistory, displayedSolution]);
+
+  useEffect(() => {
+    const loadSolutionContent = async () => {
+      if (!displayedSolution || !displayedSolution.content) return;
+      
+      try {
+        if (task.type === TaskType.FILE) {
+          setSelectedFile(null);
+          setSelectedSolutionUrl(displayedSolution.content);
+        } else {
+          const response = await fetch(displayedSolution.content);
+          if (!response.ok) {
+            throw new Error(`Failed to fetch solution content: ${response.status}`);
+          }
+          const text = await response.text();
+          setAnswer(text);
+        }
+      } catch (error) {
+        console.error('Error loading solution content:', error);
+      }
+    };
+
+    loadSolutionContent();
+  }, [displayedSolution, task.type, setAnswer, setSelectedFile]);
 
   const handleOpenHistory = () => {
     setIsHistoryOpen(true);
   };
 
-  const latestSolution = solutionHistory && solutionHistory.length > 0 ? solutionHistory[0] : null;
-
-  const handleSolutionSelect = async (solution: Solution) => {
-    if (!solution.content) return;
-    
-    try {
-      if (task.type === TaskType.FILE) {
-        // For file tasks, just store the URL
-        setSelectedFile(null); // Clear any selected file first
-        setSelectedSolutionUrl(solution.content);
-      } else {
-        // For INPUT and CODE tasks, fetch the content and set as answer
-        const response = await fetch(solution.content);
-        if (!response.ok) {
-          throw new Error(`Failed to fetch solution content: ${response.status}`);
-        }
-        const text = await response.text();
-        setAnswer(text);
-      }
-    } catch (error) {
-      console.error('Error loading solution content:', error);
-    } 
+  const handleSolutionSelect = (solution: Solution) => {
+    setDisplayedSolution(solution);
   };
 
-  // Function to clear the existing file URL
   const handleClearExistingFile = () => {
     setSelectedSolutionUrl(null);
   };
 
   return (
     <div className="md:w-[500px] flex flex-col gap-4">
-      {latestSolution ? (
-        <SolutionStatus solution={latestSolution} maxPoints={task.points}/>
+      {displayedSolution ? (
+        <>
+          <div className="bg-gray-100 rounded-lg p-4 text-gray-600 font-hse-sans">
+            Результат последней посылки:
+          </div>
+          <SolutionStatus key={displayedSolution.id} solution={displayedSolution} maxPoints={task.points}/>
+        </>
       ) : (
         <div className="bg-gray-100 rounded-lg p-4 text-gray-600 font-hse-sans">
           Решение еще не отправлено
@@ -84,7 +131,10 @@ const TaskSolution: React.FC<TaskSolutionProps> = ({
       )}
       
       {task.type === TaskType.INPUT && (
-        <InputSolution answer={answer} setAnswer={setAnswer} />
+        <InputSolution 
+          answer={answer} 
+          setAnswer={setAnswer} 
+        />
       )}
       
       {task.type === TaskType.FILE && (
@@ -94,16 +144,45 @@ const TaskSolution: React.FC<TaskSolutionProps> = ({
           fileInputRef={fileInputRef}
           existingFileUrl={selectedSolutionUrl}
           onClearExistingFile={handleClearExistingFile}
+          firstSolution={solutionHistory.length > 0}
         />
       )}
       
       {task.type === TaskType.CODE && (
-        <CodeSolution answer={answer} setAnswer={setAnswer} />
+        <CodeSolution 
+          answer={answer} 
+          setAnswer={setAnswer}
+        />
       )}
-      
+
+      <div className={`rounded-lg p-3 font-hse-sans text-sm flex items-center 
+        ${hasSubmissionsLeft 
+          ? 'bg-blue-50 text-blue-700'
+          : 'bg-red-50 text-red-700'}`}
+      >
+        {hasSubmissionsLeft ? (
+          <>
+            <span className="font-medium">
+              Осталось посылок: {submissionsLeft === Infinity ? '∞' : submissionsLeft}
+            </span>
+            {maxAttempts !== -1 && (
+              <span className="text-blue-500 ml-1">
+                (из {maxAttempts})
+              </span>
+            )}
+          </>
+        ) : (
+          <span className="font-medium">
+            Вы использовали все посылки
+          </span>
+        )}
+      </div>
+
       <ActionButtons 
         onSubmit={onSubmit} 
         onHistoryClick={handleOpenHistory}
+        isSubmitting={isSubmitting}
+        hasSubmissionsLeft={hasSubmissionsLeft}
       />
       
       <SolutionHistorySheet 
diff --git a/services/frontend/src/shared/api/session.ts b/services/frontend/src/shared/api/session.ts
index 4a04dc4..720afc5 100644
--- a/services/frontend/src/shared/api/session.ts
+++ b/services/frontend/src/shared/api/session.ts
@@ -24,7 +24,7 @@ export const submitTaskSolution = async (
 
   // туповатый костыль но для мвп сойдет
   if (typeof solution === 'string') {
-    const textFile = new File([solution], 'solution.txt', { type: 'text/plain' });
+    const textFile = new File([solution], 'solution_example.txt', { type: 'text/plain' });
     formData.append('content', textFile);
   } else {
     formData.append('content', solution);
diff --git a/services/frontend/src/shared/types/task.ts b/services/frontend/src/shared/types/task.ts
index 64e829e..54a68e5 100644
--- a/services/frontend/src/shared/types/task.ts
+++ b/services/frontend/src/shared/types/task.ts
@@ -5,6 +5,7 @@ interface Task {
   type: TaskType;
   in_competition_position: number;
   points: number;
+  max_attempts: number;
 }
 
 export interface TaskAttachment {