When you run out of moves, the message that tells you so blocks up much of the board, preventing you from getting a full look at it. I believe that if you allow players to survey the entirety of the board when all of their moves are gone will help them make a better decision over whether to go for the extra moves, or to spare their gold bars and surrender. This can certainly reduce buyer's regret over blindly buying extra moves when the board is not in an advantageous state and ending up wasting gold bars and facing increased costs of continuing. Please consider adding a button that hides the out of moves message so that players can take a good look at the board before making a decision to buy extra moves.