Community variant

Yyalllow

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.

Uploaded by: King_Keeg
Visibility: public
Status: active

Generated rule overview

This variant inherits its base rules from `chess` and overrides the settings shown below.

Board and setup

Default starting position

Pieces and movement

The piece set used on the board is: king (k), queen (q), rook (r), bishop (b), knight (n) and pawn (p).
The royal piece king (k) uses custom Betza movement `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.

Custom king (K) movement

Q

move capture move or capture initial only hopper target

Fairy-Stockfish rules

[yyallowchess:chess]
# 1. Overwrite the King ('k') to have the movement of a Queen ('Q')
# Because it uses 'king =', the engine knows this piece is royal and can be checkmated.
king = k:Q

# 2. Standard starting setup
startFen = rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1