Added initial game logic

api/app/Http/Requests/StoreGameRequest.php

@@ -11,7 +11,7 @@ class StoreGameRequest extends FormRequest
      */
     public function authorize(): bool
     {
-        return false;
+        return true;
     }
 
     /**
@@ -22,7 +22,11 @@ class StoreGameRequest extends FormRequest
     public function rules(): array
     {
         return [
-            //
+            'variant' => 'required|in:bisca-3,bisca-9',
+            'mode' => 'required|in:single-player,multiplayer',
+            'opponent_id' => $this->mode === 'multiplayer' 
+                ? 'required|exists:users,id' 
+                : 'nullable',
         ];
     }
 }