You could also do white couples vs. black couples.
As environment I could imagine a setting of two competing companies. Their CEOs could be chess friends for years and know them very well. They are equally good and both win as often as they lose. For the game, they are the male part of their Kings and the player of the game.
Now they go for some higher stakes.
Each of them has a 18 year old virgin daughter (no incest intended), being the female part of the King. If a King is defeated, the victorious King has the privilege of popping opponent's daughter's cherry while the defeated CEO has to watch. After having fun with her, all remaining pieces of his colors can have fun with her.
The other pieces could be couples where either both are employees of the company with the same job or it is an employee with their spouse.
Roles:
King: CEO with daughter
Queen: CEO's secretary with assistant (respectively husband)
Rook: Key account manager
Bishop own-colored square: Sales Manager domestically
Bishop opposing-colored square: Sales Manager overseas
Knight: Company Lawyer (or Project Manager)
Pawn: Case Worker (or each pawn has a different job like Janitor, Receptionist, Cleaner, and so on)
Capturing (not in case of defeating the female part of the King):
option 1
- A captured piece will be defeated when it had an orgasm(either the female part or both of them).
- An attacking piece can't reach orgasm (either the male part or both of them). The more pieces they capture, the more sexual energy they will gather for the final turn with the King's daughter
option 2
- A captured piece will be defeated when the female part received the cum from the attacker.
- The male part of the captured piece is forced to wear a condom to protect the attacking female.
Setting:
Could be a company picnic.
Options:
- There could be advantages when capturing other pieces on own-colored squares (like allowing BDSM or anal)
- Pawns could have even more restrictions when capturing non-pawn pieces (like no advantages on own-colored squares and oral-only on opposing-colored squares)
- A stalemate king would be treated as loser of the game
- To prevent Kings from playing for a draw, both CEO's daughters will be available for all pieces after a draw. (In a time based game, only the remaining pieces)