[dqkpwhnq] Move elimination order

Create a chess interface in which all available moves for a position are displayed on screen.  In order to play a move, the player must individually select and "eliminate" all other moves except the desired one. Perhaps swipe away.

Obviously not an interface for rapid chess.

Seeing the moves get eliminated in a particular order after certain amounts of time, then sometimes uneliminated to be reconsidered gives spectators insight into what the player is thinking.