Community variant
alquerque (kinda)
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.
Board and setup
Pieces and movement
- The piece set used on the board is: custom piece 1 (p).
- custom piece 1 (p) is a custom piece with Betza movement `K`.
Move rules
- Castling is not allowed.
- Pawn double-step moves are disabled.
- Captures are mandatory when available, except that legal check evasion still has priority.
Promotion
- Promotion choices are both sides: no pieces.
Winning and losing
- An extinction rule is active: reaching 0 remaining piece(s) p causes a loss for the side to move.
- Stalemate is scored as a loss for the side to move.
Draws and adjudication
- There is no automatic n-move/50-move draw rule.
- Position repetition is adjudicated after 0-fold repetition as a draw.
Piece movement
These diagrams show custom pieces and known Fairy-Stockfish built-in fairy pieces from White's perspective on a compact preview board. Some special moves, especially hoppers and game-state-dependent moves, can still depend on blockers or game state.
K
move
capture
move or capture
initial only
hopper target
Fairy-Stockfish rules
[alquerque_v3:chess]
maxRank = 5
maxFile = 5
customPiece1 = p:K
pawnTypes = p
startFen = ppppp/ppppp/pp1PP/PPPPP/PPPPP w - - 0 1
castling = false
doubleStep = false
mustCapture = true
extinctionValue = loss
extinctionPieceTypes = p
promotionPieceTypes = -
stalemateValue = loss
nMoveRule = 0
nFoldRule = 0