android/gradle.properties

 org.gradle.jvmargs=-Xmx1536M
 android.useAndroidX=true
 android.enableJetifier=true
-app.versionName=1.0.41
-app.versionCode=42
+app.versionName=1.0.43
+app.versionCode=44

icons/icon.svg

 <?xml version="1.0" encoding="UTF-8"?>
 <svg version="1.1" viewBox="0 0 28.747 28.747" xmlns="http://www.w3.org/2000/svg">
     <defs>
-        <filter id="filter6206-7" color-interpolation-filters="sRGB">
+        <filter id="filter6206-7" x="-.072" y="-.072" width="1.144" height="1.144" color-interpolation-filters="sRGB">
             <feGaussianBlur stdDeviation="0.658125"/>
         </filter>
     </defs>
@@ -75,8 +75,5 @@
         </g>
         <path d="m24.549 1119.5c0.66325 0 1.1979-0.5346 1.1979-1.1979v-0.3333c0 0.6632-0.53461 1.1978-1.1979 1.1978h-20.354c-0.66325 0-1.1979-0.5346-1.1979-1.1978v0.3333c0 0.6633 0.53461 1.1979 1.1979 1.1979z" fill="#1a237e" opacity=".2"/>
     </g>
-    <g transform="matrix(.29602 0 0 .29602 6.7952 6.7952)" stroke-width="1.0667">
-        <path d="m0 0h51.2v51.2h-51.2z" fill="none"/>
-        <path d="m25.587 1.3672c-13.298 0-24.044 10.772-24.044 24.057s10.745 24.057 24.044 24.057 24.07-10.772 24.07-24.057-10.772-24.057-24.07-24.057zm0.013365 42.768c-10.331 0-18.711-8.3799-18.711-18.711 0-10.331 8.3799-18.711 18.711-18.711s18.711 8.3799 18.711 18.711c0 10.331-8.3665 18.711-18.711 18.711z" fill="#fff"/>
-    </g>
+    <path d="m8.546 7.9051c-0.23528-0.00437-0.46891 0.081445-0.64583 0.25838-0.35385 0.35385-0.34293 0.93442 0.024394 1.3017l1.6235 1.6235c-1.4555 1.3424-2.2843 3.2302-2.2868 5.2088h-0.00671c0 0.78875 0.6351 1.4237 1.4238 1.4237h11.39c0.78875 0 1.4238-0.63491 1.4238-1.4237h-0.0066c-0.0025-1.9786-0.83132-3.8664-2.2869-5.2088l1.6237-1.6235c0.36731-0.3673 0.37823-0.94789 0.02439-1.3017-0.17698-0.17692-0.41059-0.26276-0.64588-0.25838-0.23528 0.00438-0.47224 0.098914-0.65589 0.28256l-1.8429 1.8428c-2.0826-1.1043-4.5778-1.1062-6.662-0.0048l-1.838-1.838c-0.18365-0.18365-0.42061-0.27818-0.65589-0.28256zm2.7268 5.2174c0.67701 3.1e-5 1.2258 0.54885 1.2259 1.2259-3.2e-5 0.67701-0.54885 1.2258-1.2259 1.2259-0.67701-3.2e-5 -1.2258-0.54885-1.2259-1.2259 3.2e-5 -0.67701 0.54885-1.2258 1.2259-1.2259zm6.201 0c0.67709-7.4e-5 1.226 0.54878 1.2261 1.2259-3.2e-5 0.67708-0.54897 1.2259-1.2261 1.2259-0.67701-3.2e-5 -1.2258-0.54885-1.2259-1.2259 3.3e-5 -0.67701 0.54885-1.2258 1.2259-1.2259z" fill="#fff" opacity=".99"/>
 </svg>

lib/ui/widgets/game/game_board.dart

@@ -153,6 +153,16 @@ class _GameBoardWidget extends State<GameBoardWidget> with TickerProviderStateMi
     return GestureDetector(
       child: buildBoard(),
       onTapUp: (details) {
+        bool canRemoveCell = true;
+        animations.forEach((row) {
+          row.forEach((cell) {
+            if (cell != null) {
+              canRemoveCell = false;
+            }
+          });
+        });
+
+        if (canRemoveCell) {
           double xTap = details.localPosition.dx;
           double yTap = details.localPosition.dy;
 
@@ -161,6 +171,9 @@ class _GameBoardWidget extends State<GameBoardWidget> with TickerProviderStateMi
           print('[' + x.toString() + ',' + y.toString() + ']');
 
           removeCell(context, x, y);
+        } else {
+          print('animation in progress...');
+        }
       },
     );
   }

pubspec.yaml

@@ -3,7 +3,7 @@ description: A random application, for testing purpose only.
 
 publish_to: 'none'
 
-version: 1.0.41+42
+version: 1.0.43+44
 
 environment:
   sdk: '^3.0.0'