Community variant
Undead
The White Necromancer has a large army of droppable weak undead pieces against the regular Black chess army.
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: king (k), queen (q), rook (r), bishop (b), knight (n), pawn (p), Forward (f), Zombie (z), Skeleton (s), Necromancer (o) and Blocker (x).
- Forward (f) is a custom piece with Betza movement `fW`.
- Necromancer (o) is a custom piece with Betza movement `FWD`.
- Zombie (z) is a custom piece with Betza movement `fbWfF`.
- Skeleton (s) is a custom piece with Betza movement `WF`.
Drops and hands
- Pieces in hand can be dropped back onto the board. Droppable pieces are: Blocker (x), Forward (f), Zombie (z) and Skeleton (s).
Winning and losing
- An extinction rule is active: reaching 0 remaining piece(s) ko causes a loss for the side to move.
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.
fW
FWD
fbWfF
WF
move
capture
move or capture
initial only
hopper target
Fairy-Stockfish rules
[undead:chess]
pieceDrops = true
# immobile
customPiece1 = x:
# only forward
customPiece2 = f:fW
# necromancer: royal piece
customPiece3 = o:FWD
# stronger zombie
customPiece4 = z:fbWfF
# skeleton, moves like king
customPiece5 = s:WF
extinctionValue = loss
extinctionPieceTypes = ko
extinctionPseudoRoyal = true
startFen = rnbqkbnr/pppppppp/8/8/8/8/FFFFFFFF/1ZS1OSZ1[XXXXXXXXXXXXFFFFFFFFZZZZS] w kq - 0 1