with 15 tashes on gamestart you should be able to discard with movement

apps/web/priv/static/app/js/okey/okey.js

@@ -115,7 +115,7 @@ function PostLoad()
         {
             playerTurn = !0;
             var cards = scope.playersLeftHandsMap[player].cards;
-            if (cards.length)
+//            if (cards.length)
             {
                 var card = cards[cards.length-1];
                 scope.deck.$el.append(card.$el[0]), card.$el.attr({ transform: "translate(16 -65)"}),