Community variant

Cannon Pawn Empire Chess

See https://blog.silverview.buzz/variants/empire . The Empire against The Kingdom! Empire's pawns are replaced by Cannon Pawns. Soldiers do not promote. Cannon Pawns can promote to chess Queens only (as in Empire). Cannon Pawns move as a king OR they can hop over any adjacent piece to either land on a vacant square behind it (move) or if that landing square is occupied by an enemy piece, the cannon pawn will capture it by displacement. All else is as in Empire.

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: sagig72
Visibility: public
Status: active

Generated rule overview

This variant inherits its base rules from `empire` 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), piece (c), piece (e), custom piece 6 (x), piece (s), piece (t) and piece (d).
custom piece 6 (x) is a custom piece with Betza movement `mKpQ2`.

Promotion

The pieces that can promote are: pawn (p) and custom piece 6 (x).
Promotion choices are both sides: 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.

Custom piece 6 (X) movement

mKpQ2

move capture move or capture initial only hopper target

Fairy-Stockfish rules

[cannon_pawn_empirechess:empire]
customPiece6 = x:mKpQ2
startFen = rnbqkbnr/pppppppp/8/8/8/8/XXXSSXXX/TECDKCET w kq - 0 1
promotionPawnTypes = p x
promotionPieceTypes = q