Community variant
Connect4 but chess
Connect 4 but you align chess pieces. Checkmate/capturing the king is not a win. Black pawns do move down
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: commoner (k), queen (q), rook (r), bishop (b), knight (n) and pawn (p).
Move rules
- Castling is not allowed.
Drops and hands
- Pieces in hand can be dropped back onto the board. Droppable pieces are: rook (r), knight (n), bishop (b), queen (q), commoner (k) and pawn (p).
- Pawn drops on the first rank are allowed.
- Pawn drops into the promotion zone are allowed.
- Drops must satisfy an enclosing/placement rule before they are legal.
Promotion
- Promotions are available in the configured promotion zones. The the promotion region for White is all squares on rank 6.
- The pieces that can promote are: pawn (p).
- Promotion choices are both sides: knight (n), bishop (b), rook (r) and queen (q).
Winning and losing
- A player can win by connecting 4 pieces horizontally, vertically and diagonally.
Fairy-Stockfish rules
[c4-bc:chess]
maxRank = 6
maxFile = 7
king = -
commoner = k
startFen = 7/7/7/7/7/7[RNBQKBNRPPPPPPPPrnbqkbnrpppppppp] w - - 0 1
pieceDrops = true
firstRankPawnDrops = true
promotionZonePawnDrops = true
doubleStepRegionBlack = *5
promotionRegionWhite = *6
promotionPieceTypes = nbrq
enclosingDrop = top
castling = false
connectN = 4