stop playing when either player has an empty hand.

[nlitsme]

bugfix: in kleber1999 play would continue even though one player had already played all its cards.

[nlitsme]

not 100% sure about this. ... but i thought it was odd.

[matthewmayer]

I need to double check this but having an empty hand doesn't mean immediate end of game right?

Like, if I play my final card and it's a queen , then play continues until my opponent puts down up to 2 more cards. If they don't put down a court card, I win the trick and so the game will continue.

[nlitsme]

The game rules seem a bit ambiguous, wikipedia:"When a single player has all of
the cards in the deck in their stack, they have won. ", while others say: "If a player runs out of cards, he loses". in the M.Paulhus paper of 1999, both rules are mentioned: "Any player who runs out of cards, drops out of the game. If this happens during the contribution process, then the obligation to complete the contribution passes to the next player. The winner is theplayer who accumulates the whole deck.".

[nlitsme]

I was thinking, with the 'wikipedia' rules, the game can stall, when a penalty has not yet been fully paid, and both players have empty hands.