Tap one of the bot's hands with one of yours. The bot's hand
increases by your hand's value.
Hands wrap at 5, so 5 becomes 0 and that hand is out.
You win by making both bot hands 0.
Instead of tapping, you can rearrange your own hands as long as the
total stays the same and the result is a real change.
If a move creates the same position for the third time, the game is
a draw.
Keyboard: Tab or arrow keys move focus. Enter or Space selects.