diff --git a/services/backend/apps/task/tasks.py b/services/backend/apps/task/tasks.py
index bb909c2..86588f4 100644
--- a/services/backend/apps/task/tasks.py
+++ b/services/backend/apps/task/tasks.py
@@ -12,9 +12,7 @@ from apps.task.models import CompetitionTaskSubmission
 def analyze_data_task(self, submission_id):
     submission = CompetitionTaskSubmission.objects.get(id=submission_id)
     try:
-        code_url = (
-            f"{settings.MINIO_DEFAULT_CUSTOM_ENDPOINT_URL}{submission.path}"
-        )
+        code_url = f"{settings.MINIO_DEFAULT_CUSTOM_ENDPOINT_URL}{submission.content.path}"
         files = [
             {
                 "url": f"{settings.MINIO_DEFAULT_CUSTOM_ENDPOINT_URL}{attachment.path}",
diff --git a/services/frontend/src/pages/CompetitionSession/components/CompetitionHeader/index.tsx b/services/frontend/src/pages/CompetitionSession/components/CompetitionHeader/index.tsx
index b4eba1b..6d36a6b 100644
--- a/services/frontend/src/pages/CompetitionSession/components/CompetitionHeader/index.tsx
+++ b/services/frontend/src/pages/CompetitionSession/components/CompetitionHeader/index.tsx
@@ -7,13 +7,23 @@ interface CompetitionHeaderProps {
   title: string;
   tasks: Task[];
   competitionId: string;
+  setAnswer: (value: string) => void;
+  setSelectedFile: (file: File | null) => void;  // заглушка
 }
 
 const CompetitionHeader: React.FC<CompetitionHeaderProps> = ({ 
   title,
   tasks, 
-  competitionId 
+  competitionId,
+  setAnswer,
+  setSelectedFile
 }) => {
+
+  const handleTaskSelect = () => {
+    setAnswer("")
+    setSelectedFile(null)
+  }
+  
   return (
     <header className="bg-white shadow-sm sticky top-0 z-30 w-full">
       <div className="mx-auto max-w-6xl px-4">
@@ -21,6 +31,7 @@ const CompetitionHeader: React.FC<CompetitionHeaderProps> = ({
           <Link 
             to={`/competition/${competitionId}`}
             className="flex items-center text-gray-600 hover:text-gray-900 transition-colors font-hse-sans text-sm"
+            onClick={handleTaskSelect}
           >
             <ArrowLeft className="h-4 w-4 mr-1" />
           </Link>
diff --git a/services/frontend/src/pages/CompetitionSession/index.tsx b/services/frontend/src/pages/CompetitionSession/index.tsx
index 4d0c5f8..eb80913 100644
--- a/services/frontend/src/pages/CompetitionSession/index.tsx
+++ b/services/frontend/src/pages/CompetitionSession/index.tsx
@@ -95,6 +95,8 @@ const CompetitionSession = () => {
         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/SolutionHistorySheet/index.tsx b/services/frontend/src/pages/CompetitionSession/modules/TaskSolution/components/SolutionHistorySheet/index.tsx
index 83d8cda..1abcabb 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
@@ -11,7 +11,7 @@ interface SolutionHistorySheetProps {
   solutions: Solution[];
   maxPoints: number;
   onSolutionSelect: (solution: Solution) => void;
-  currentSolutionId?: string | null;
+  currentSolutionId?: string;
 }
 
 const SolutionHistorySheet: React.FC<SolutionHistorySheetProps> = ({
@@ -22,7 +22,6 @@ const SolutionHistorySheet: React.FC<SolutionHistorySheetProps> = ({
   onSolutionSelect,
   currentSolutionId
 }) => {
-  
   return (
     <Sheet open={isOpen} onOpenChange={onOpenChange}>
       <SheetContent className="w-[350px] sm:w-[450px] p-0">
@@ -39,11 +38,15 @@ const SolutionHistorySheet: React.FC<SolutionHistorySheetProps> = ({
         
         <div className="flex flex-col mt-3 space-y-2.5 overflow-y-auto max-h-[calc(100vh-80px)] px-4 pb-4">
           {solutions.length > 0 ? (
-            solutions.map((solution) => (
+            solutions.map((solution, index) => (
               <div 
-                key={solution.id} 
-                className={`w-full cursor-pointer relative ${solution.id === currentSolutionId ? 'ring-2 ring-blue-500 rounded-lg' : ''}`}
-                onClick={() => onSolutionSelect(solution)}
+                key={solution.id || index} 
+                className={`w-full cursor-pointer transition-transform hover:scale-[1.01] relative 
+                  ${solution.id === currentSolutionId ? 'ring-2 ring-blue-500 rounded-lg' : ''}`}
+                onClick={() => {
+                  onSolutionSelect(solution);
+                  onOpenChange(false);
+                }}
               >
                 {solution.id === currentSolutionId && (
                   <div className="absolute top-2 right-2 z-10 bg-blue-500 text-white rounded-full p-1">
diff --git a/services/frontend/src/pages/CompetitionSession/modules/TaskSolution/components/SolutionStatus/index.tsx b/services/frontend/src/pages/CompetitionSession/modules/TaskSolution/components/SolutionStatus/index.tsx
index b67c5ac..8596c97 100644
--- a/services/frontend/src/pages/CompetitionSession/modules/TaskSolution/components/SolutionStatus/index.tsx
+++ b/services/frontend/src/pages/CompetitionSession/modules/TaskSolution/components/SolutionStatus/index.tsx
@@ -11,6 +11,7 @@
 
   const SolutionStatus: React.FC<SolutionStatusProps> = ({ solution, maxPoints }) => {
     const formattedDate = solution.timestamp ? format(parseISO(solution.timestamp), "d MMMM, HH:mm", { locale: ru }) : '';
+    console.log(solution, "SOLUTION STATUS")
     return (
       <div className={`${getSolutionBgColor(solution.status, solution.earned_points, maxPoints)} rounded-lg p-4 relative`}>
         <div className="flex flex-col">
diff --git a/services/frontend/src/pages/CompetitionSession/modules/TaskSolution/index.tsx b/services/frontend/src/pages/CompetitionSession/modules/TaskSolution/index.tsx
index 06cebdd..87cd253 100644
--- a/services/frontend/src/pages/CompetitionSession/modules/TaskSolution/index.tsx
+++ b/services/frontend/src/pages/CompetitionSession/modules/TaskSolution/index.tsx
@@ -9,6 +9,8 @@ import FileSolution from './components/FileSolution';
 import CodeSolution from './components/CodeSolution';
 import ActionButtons from './components/ActionButtons';
 import SolutionHistorySheet from './components/SolutionHistorySheet';
+import { AlertTriangle, ArrowRight } from 'lucide-react';
+import { Button } from '@/components/ui/button';
 
 interface TaskSolutionProps {
   task: Task;
@@ -17,6 +19,7 @@ interface TaskSolutionProps {
   selectedFile: File | null;
   setSelectedFile: (file: File | null) => void;
   onSubmit: () => void;
+  isSubmitting?: boolean;
 }
 
 const TaskSolution: React.FC<TaskSolutionProps> = ({ 
@@ -26,13 +29,14 @@ 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 [currentSolution, setCurrentSolution] = useState<Solution | null>(null);
+  const [displayedSolution, setDisplayedSolution] = useState<Solution | null>(null);
   const { id: competitionId } = useParams<{ id: string }>();
-  const taskIdRef = useRef<string | null>(null);
+  const prevTaskIdRef = useRef<string | null>(null);
 
   const solutionsQuery = useQuery({
     queryKey: ['solutionHistory', competitionId, task.id],
@@ -41,48 +45,66 @@ const TaskSolution: React.FC<TaskSolutionProps> = ({
   });
 
   const solutionHistory = solutionsQuery.data || [];
-  // Handle task changes
+  
+  const getLatestSolution = () => {
+    return solutionHistory.length > 0 ? solutionHistory[solutionHistory.length - 1] : null;
+  };
+  
+  const isOutdatedSolution = () => {
+    if (!displayedSolution || solutionHistory.length === 0) return false;
+    const latestSolution = getLatestSolution();
+    return latestSolution?.id !== displayedSolution.id;
+  };
+
+  // Set initial solution to the last one (most recent) when solutions are loaded
   useEffect(() => {
-    if (taskIdRef.current !== task.id) {
-      setCurrentSolution(null);
+    if (solutionHistory.length > 0 && !displayedSolution) {
+      const latestSolution = solutionHistory[solutionHistory.length - 1];
+      setDisplayedSolution(latestSolution);
+    }
+  }, [solutionHistory, displayedSolution]);
+
+  // When task changes, reset everything and load the latest solution for the new task
+  useEffect(() => {
+    if (prevTaskIdRef.current !== task.id) {
+      // Reset states for new task
+      setDisplayedSolution(null);
       setSelectedSolutionUrl(null);
-      setAnswer("");
-      setSelectedFile(null);
-      taskIdRef.current = task.id;
       
-      // Wait for the query to complete
-      if (!solutionsQuery.isLoading && solutionHistory.length > 0) {
-        // Get the most recent solution (last in the array)
+      // If solutions are already loaded for the new task, set the latest one
+      if (solutionHistory.length > 0) {
         const latestSolution = solutionHistory[solutionHistory.length - 1];
-        setCurrentSolution(latestSolution);
+        setDisplayedSolution(latestSolution);
       }
+      
+      prevTaskIdRef.current = task.id;
     }
-  }, [task.id, solutionHistory, solutionsQuery.isLoading, setAnswer, setSelectedFile]);
+  }, [task.id, solutionHistory]);
 
-  // Refresh current solution when the solution history changes (after a new submission)
+  // Check if a new solution was submitted (latest solution ID changed)
   useEffect(() => {
-    if (!solutionsQuery.isLoading && solutionHistory.length > 0) {
-      // If we don't have a current solution or there's a new submission
-      // (which would be the last item in the array)
-      if (!currentSolution || 
-          currentSolution.id !== solutionHistory[solutionHistory.length - 1].id) {
-        // Set to the latest solution (last in the array)
-        setCurrentSolution(solutionHistory[solutionHistory.length - 1]);
+    if (solutionHistory.length > 0 && displayedSolution) {
+      const latestSolution = solutionHistory[solutionHistory.length - 1];
+      
+      // If the latest solution ID is different from the displayed one,
+      // a new solution was submitted - update to show the latest
+      if (latestSolution.id !== displayedSolution.id) {
+        setDisplayedSolution(latestSolution);
       }
     }
-  }, [solutionHistory, currentSolution, solutionsQuery.isLoading]);
+  }, [solutionHistory, displayedSolution]);
 
-  // Load solution content when current solution changes
+  // Load solution content when the displayed solution changes
   useEffect(() => {
     const loadSolutionContent = async () => {
-      if (!currentSolution || !currentSolution.content) return;
+      if (!displayedSolution || !displayedSolution.content) return;
       
       try {
         if (task.type === TaskType.FILE) {
           setSelectedFile(null);
-          setSelectedSolutionUrl(currentSolution.content);
+          setSelectedSolutionUrl(displayedSolution.content);
         } else {
-          const response = await fetch(currentSolution.content);
+          const response = await fetch(displayedSolution.content);
           if (!response.ok) {
             throw new Error(`Failed to fetch solution content: ${response.status}`);
           }
@@ -95,39 +117,61 @@ const TaskSolution: React.FC<TaskSolutionProps> = ({
     };
 
     loadSolutionContent();
-  }, [currentSolution, task.type, setAnswer, setSelectedFile]);
+  }, [displayedSolution, task.type, setAnswer, setSelectedFile]);
 
   const handleOpenHistory = () => {
     setIsHistoryOpen(true);
   };
 
   const handleSolutionSelect = (solution: Solution) => {
-    setCurrentSolution(solution);
-    setIsHistoryOpen(false);
+    setDisplayedSolution(solution);
   };
 
   const handleClearExistingFile = () => {
     setSelectedSolutionUrl(null);
   };
-
-  const handleSubmitWrapper = () => {
-    onSubmit();
+  
+  // Function to switch to the latest solution
+  const goToLatestSolution = () => {
+    const latestSolution = getLatestSolution();
+    if (latestSolution) {
+      setDisplayedSolution(latestSolution);
+    }
   };
 
   return (
     <div className="md:w-[500px] flex flex-col gap-4">
-      {currentSolution ? (
-        <SolutionStatus solution={currentSolution} maxPoints={task.points}/>
+      {displayedSolution ? (
+        <SolutionStatus solution={displayedSolution} maxPoints={task.points}/>
       ) : (
         <div className="bg-gray-100 rounded-lg p-4 text-gray-600 font-hse-sans">
           Решение еще не отправлено
         </div>
       )}
       
+      {/* Outdated solution warning */}
+      {isOutdatedSolution() && (
+        <div className="bg-amber-50 border border-amber-200 rounded-lg p-3 flex justify-between items-center">
+          <div className="flex items-center text-amber-800">
+            <AlertTriangle size={18} className="mr-2 text-amber-500" />
+            <span className="font-hse-sans text-sm">Устаревшая посылка</span>
+          </div>
+          <Button 
+            variant="ghost" 
+            size="sm" 
+            className="text-blue-600 hover:text-blue-700 hover:bg-blue-50 flex items-center"
+            onClick={goToLatestSolution}
+          >
+            <span className="mr-1">К последней</span>
+            <ArrowRight size={16} />
+          </Button>
+        </div>
+      )}
+      
       {task.type === TaskType.INPUT && (
         <InputSolution 
           answer={answer} 
-          setAnswer={setAnswer}
+          setAnswer={setAnswer} 
         />
       )}
       
@@ -138,6 +182,7 @@ const TaskSolution: React.FC<TaskSolutionProps> = ({
           fileInputRef={fileInputRef}
           existingFileUrl={selectedSolutionUrl}
           onClearExistingFile={handleClearExistingFile}
+          isLoading={isSubmitting}
         />
       )}
       
@@ -149,7 +194,7 @@ const TaskSolution: React.FC<TaskSolutionProps> = ({
       )}
       
       <ActionButtons 
-        onSubmit={handleSubmitWrapper} 
+        onSubmit={onSubmit} 
         onHistoryClick={handleOpenHistory}
       />
       
@@ -159,7 +204,7 @@ const TaskSolution: React.FC<TaskSolutionProps> = ({
         solutions={solutionHistory}
         maxPoints={task.points}
         onSolutionSelect={handleSolutionSelect}
-        currentSolutionId={currentSolution?.id}
+        currentSolutionId={displayedSolution?.id}
       />
     </div>
   );