diff --git a/public/game.html b/public/game.html
index 397b0c88bce90770e96d1bb4df76d5b3caf1df45..80e94909daa1c6ed8265db5c03645fb382ff4436 100644
--- a/public/game.html
+++ b/public/game.html
@@ -80,6 +80,16 @@
               );
               ctx.fillStyle = "white";
             }
+            if (board[i][j].type === 4) {
+              ctx.fillStyle = "yellow";
+              ctx.fillRect(
+                j * widthStep + 1,
+                i * heightStep + 1,
+                widthStep - 2,
+                heightStep - 2,
+              );
+              ctx.fillStyle = "white";
+            }
           }
         }
       };