Community variant
Crowned
This is a user-catalogued casual variant. Technical details such as board size,
FEN, pieces, and hand rules are defined in the Fairy-Stockfish
variants.ini block below.
Generated rule overview
This variant inherits its base rules from `chess` and overrides the settings shown below.
Some options are still shown in technical form because they do not yet have friendly wording.
Board and setup
Pieces and movement
- The piece set used on the board is: queen (q), rook (r), bishop (b), knight (n), pawn (p) and king (k).
Move rules
- Check restrictions are disabled; kings/royal pieces may be capturable depending on the variant goal.
- Castling is not allowed.
Promotion
- The pieces that can promote are: pawn (p).
- Promotion choices are both sides: king (k).
Winning and losing
- An extinction rule is active: reaching 0 remaining piece(s) p causes a win for the side to move.
- A flag/goal-zone win is active for piece(s) k.
Other technical options
-
royalTypes is set to .
royalTypes =
Fairy-Stockfish rules
[crown:chess]
variantTemplate = chess
# 1. Disable Check & Checkmate
# Strips royal mechanics so the game doesn't crash without Kings
royalTypes =
castling = false
checking = false
# 2. Instant Victory Condition (King on the back rank)
# The exact moment a King appears on the final rank, that player wins
flagPiece = k
flagRegionWhite = *8
flagRegionBlack = *1
# 3. Pawn Exhaustion = Win
# The engine watches the pawn count. If either player hits 0 pawns, the game is a draw
extinctionValue = win
extinctionPieceTypes = p
extinctionPieceCount = 0
# 4. Strict Promotions
# "promotionPawnTypes" ensures only pawns trigger the promotion mechanic
# "promotionPieceTypes" forces the King to be the only option in the menu
promotionPawnTypes = p
promotionPieceTypes = k
# 5. Kingless Starting Board
startFen = rnbq1bnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQ1BNR w - - 0 1