[shadew21]

Pawn: 10 Spanks to each cheek.
Knight: If you lose one you start to masturbate while playing, if you lose the second you double in speed.
Bishop: After making each move you finger your ass for 5 seconds. After losing two it is 10 seconds.
Castle: If you lose one you coat your cock+balls/vagina in toothpaste and if you lose the second you insert some in your ass.
Queen: This, at the very least has to be a choice. It should be a big dare based on a like by the other player.
Check: Edge once.
Checkmate: Edge then stop masturbating immediately, the winner now has control over your masturbation for a week. You can earn it back by winning against them, but only if they agree to play you. Another option could be more of a "Slave for a week" type of thing. Generally it has to be a long lasting thing that gives the winner control over the loser.