Goal: collect as few penalty points as possible. Four players use a 52-card deck, with 13 cards each. After the deal, select three cards to pass. Pass left, right, across, then keep your cards for one deal; this four-deal cycle repeats. Tap a selected card again to deselect it. Cards are exchanged simultaneously; the new holder of the two of clubs leads.

Play: lead with the two of clubs. You must follow suit if you can; otherwise, play any suit. On the first trick, you cannot play a heart or the queen of spades while you have a non-penalty card. There are no trumps. The highest card of the led suit wins, and its player leads next. Aces are high.

Leading hearts: you may lead a heart only after hearts have been played, or if your hand contains only hearts. The queen of spades alone does not break hearts.

Scoring: each heart is worth 1 penalty point and the queen of spades is worth 13. Collect all 26 points in one deal to shoot the moon: you score 0 and the other players score 26 each. When anyone reaches 100, the match ends after that deal. The lowest score wins; equal lowest scores share the win.

Controls: bright cards with gold borders are playable; dimmed cards are not. Each card corner shows its rank and suit. On mobile, your hand uses multiple rows.

Computer opponents: decisions use their own hands, publicly played cards and scores. They try to discard dangerous cards and prevent opponents from shooting the moon.

Saving: every move and passing selection is saved automatically. Reopen this page in the same browser to continue. Completed results are also kept; New game starts a fresh match. English and Hungarian games are saved separately.