Community variant
Keima pawn chess
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 is defined directly from a Fairy-Stockfish rule block. The text below is generated from the available configuration and may omit details that are only implicit in piece movement notation.
Board and setup
Pieces and movement
- The piece set used on the board is: king (k), queen (q), rook (r), bishop (b), knight (n) and custom piece 1 (p).
- custom piece 1 (p) is a custom piece with Betza movement `fN`.
Promotion
- The pieces that can promote are: custom piece 1 (p).
- Promotion choices are both sides: knight (n), bishop (b), rook (r) and queen (q).
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.
fN
move
capture
move or capture
initial only
hopper target
Fairy-Stockfish rules
[keima-pawn]
customPiece1 = p:fN
knight = n
bishop = b
rook = r
queen = q
king = k
promotionPawnTypes = p
promotionPieceTypes = nbrq