On your turn you must declare either the current rank or one rank above, then play 1–4 cards face-down. Your cards don't have to match your claim — that's the bluff.

Anyone can hit BLUFF during the challenge window. If the claim was a lie, the liar takes the pile. If it was honest, the challenger takes it.

The successful player restarts the next round. Rank never resets — it cycles A→2→…→K→A.

First to empty their hand wins.