The rules for the regular chess games and variants modified for strip is strip chess. In a typical strip chess game, for every piece taken off by the opponent, the loser of the piece takes off an article of clothing. In most cases, losing pawns might not lead to a strip; however, the same differs between sites and based on the individual rules you place for your stripping chess games.
The removal of clothes can be complete or it can be a semi strip based on the rules agreed between players. In regular chess game, the players try to check mate to win, and they do not target to take the pieces off. However, in strip chess, since every piece taken leads to a strip, the players target to take the pieces rather than to check mate.
With the goal of the strip chess game being differently directed to taking off pieces the strategies and the target method the player used to play the game differs.
If you are a chess serious player trying hard to play strip chess without diluting the puritan motive of the game, you might have to consider changing the gaming rules in a bit. Where you can change the rules for strip to checkmate and not to every piece taken or you can reduce the strip to the taking off specific pieces rather than everything. You can also choose a complete disrobe when the game ends with no disrobes during the gaming process based on what you prefer.
The rules are not static and this is on the fun of strip you can make things work easier. However, if you prefer a puritan chess and puritan disrobe, you can make rules hard if you will enjoy. There are no values allotted to pieces, if you think you have to add value to pieces and the garments you can do so in strip chess.