Community variant

Boss Fight

Can you beat a QNN piece? Test your skills against Fairy Stockfish

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: NoPlayers
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), pawn (p) and custom piece 1 (o).
custom piece 1 (o) is a custom piece with Betza movement `QNN`.

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 piece 1 (O) movement

QNN

move capture move or capture initial only hopper target

Fairy-Stockfish rules

[bossfight1:chess]
customPiece1 = o:QNN
startFen = 3ok3/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQ - 0 1