diff --git a/www/js/game.js b/www/js/game.js
index fec30fa..ba3ffa0 100644
--- a/www/js/game.js
+++ b/www/js/game.js
@@ -409,6 +409,10 @@ GAME.Game = class {
                 this.pools[this.turn & 1].pieces[play.from] -= 1;
                 this.turn++;
             } break;
+
+            case 0xF: {
+                this.state.code = GAME.Const.State.Resign;
+            } break;
         }
 
         // Recalculate new board state.