Community variant

Dragonfly

Simplified Crazyhouse. Special pawn promotion rules from the original definition are not implemented. Credits to Procyon for the definition. https://en.wikipedia.org/wiki/Dragonfly_(chess_variant)

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: gbtami
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), rook (r), bishop (b), knight (n) and pawn (p).

Move rules

Pawn double-step moves are disabled.

Drops and hands

Pieces in hand can be dropped back onto the board. Droppable pieces are: rook (r), bishop (b), knight (n) and pawn (p).
Captured pieces go to the capturer's hand.
Drops of pawn (p) are restricted on files that already contain 0 such piece(s).

Promotion

Promotions are available in the configured promotion zones. The the promotion region for White is all squares on rank 7 and the promotion region for Black is all squares on rank 1.
The pieces that can promote are: pawn (p).
Promotion choices are both sides: knight (n), bishop (b) and rook (r).

Fairy-Stockfish rules

[dragonfly:chess]
maxFile = 7
maxRank = 7
pocketSize = 7
castlingKingsideFile = f
castlingQueensideFile = b
pieceDrops = true
capturesToHand = true
promotionRegionWhite = *7
promotionRegionBlack = *1
promotionPieceTypes = nbr
doubleStep = false
dropNoDoubled = p
dropNoDoubledCount = 0
startFen = rbbknnr/ppppppp/7/7/7/PPPPPPP/RBBKNNR[] w KQkq - 0 1