Fill the 4×4 grid so no face card or suit repeats in any row or column.
1. Four face cards (Jack, Queen, King, Ace) combined with four suits (♠ ♥ ♦ ♣) give 16 unique cards.
2. Every row and every column must contain each face card exactly once and each suit exactly once.
3. Click a card in the tray to select it (it lifts and glows gold), then click a cell on the board to place it.
4. Click a placed card on the board to pick it back up; it returns to the tray ready to move.
5. Cells flash red when a face card or suit is duplicated in the same row or column.
6. The timer starts when you place your first card and stops when you solve the puzzle.
7. Dimmed cards in the tray are already on the board; each card can only be placed once.
8. Click 🗑 Clear All to reset the board and the timer. Try to beat your best time!