fix

src/game/DominoesGame.ts

@@ -97,7 +97,7 @@ export class DominoesGame extends EventEmitter {
       tiles.push(...player.hand);
     }
     const canPlay = tiles.some(tile => tile.pips[0] === freeEnds[0] || tile.pips[1] === freeEnds[0] || tile.pips[0] === freeEnds[1] || tile.pips[1] === freeEnds[1]);
-    return !canPlay;
+    return  this.blockedCount >= 4 && !canPlay;
   }
 
   isGameOver(): boolean {