Community variants

"Torre en raya" in spanish. TicTacRook is a deep, abstract strategy variant for Fairy-Stockfish that seamlessly fuses chess mobility with alignment goals. Played on an empty 8x8 grid, both players start with a reservoir of 16 pieces available to drop anywhere on the board. Alternatively, players can move their existing pieces, which slide horizontally or vertically exactly like Chess Rooks, but cannot capture or jump over others. The ultimate goal is to align 5 pieces in a row—horizontally, vertically, or diagonally—to win. This hyper-mobility transforms defensive blocking, offering a dynamic, tactical challenge where a single long-range slide can instantly shatter an opponent's strategy.

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alvr634

Board

8 × 8

Games

154

Favorites

7

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10x8 with Dwarf as a Camel Rook compound and Elf as a Bishop King compound

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tea_drunk

Board

10 × 8

Games

17

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3

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Board

8 × 8

Games

26

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4

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Praetorian Chess is a “different armies” variant in which classical White (RNBQKBNR) faces the Praetorian army VWXIKXWV (this setup has an empirical White score of 50.365%). The rules are otherwise those of standard chess, except that there is no castling. Check, checkmate, en passant, and ordinary pawn movement are unchanged. Pawns promote to Queen, Rook, Bishop, or Knight. Praetorian pieces: - V Arbalest (Roobis, mRcB): moves like a Rook, but captures like a Bishop. - W Sentinel (Rooman, mRcK): moves like a Rook, but captures one square in any direction. - X Praetorian (Bers, KR): combines Rook and King movement. - I Ballista (Bisroo, mBcR): moves like a Bishop, but captures like a Rook. - K Caesar: the ordinary royal King. Empirical piece values computed in this matchup: Praetorian X (Bers) = 5.98 Ballista I (Bisroo) = 3.87 Arbalest V (Roobis) = 3.64 Sentinel W (Rooman) = 3.28 Queen Q = 8.50 Rook R = 4.26 Bishop B = 3.28 Knight N = 2.97 Pawn P = 1.00

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Zekk1302

Board

8 × 8

Games

27

Favorites

5

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Connect 4 but you align chess pieces. Checkmate/capturing the king is not a win. Black pawns do move down

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Rom142857

Board

7 × 6

Games

53

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5

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You can't go backwards !

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Rom142857

Board

8 × 8

Games

7

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3

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zhoucantd

Board

4 × 4

Games

266

Favorites

4

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Black must align 5 to win This variant can be won easily as White and can be used as a challenge to beat Fairy-Stockfish

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Rom142857

Board

8 × 8

Games

16

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3

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This variant of fairy chess is meant to assign each player a random assortment of fairy-chess pieces.

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Beanie

Board

8 × 8

Games

7

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1

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Classical White (RNBQKBNR) plays against the empirically balanced Black army HWAGKAWH (reported White score: 50.67%). Black's pieces are: H = Biskni, moves like a Bishop but captures/checks like a Knight (value = 2.49 pawn); W = Rooman, moves like a Rook but captures like a non-royal King (value = 3.28 pawn); A = Archbishop, combines Bishop and Knight movement (value = 6.79); G = Manroo, moves like a non-royal King but captures/checks like a Rook (value = 3.74). Otherwise the rules are those of chess, except there is no castling; pawns promote to Queen (value = 8.50), Rook (value = 4.26), Bishop (value = 3.28), or Knight (value = 2.97). Source: https://github.com/Zekkzekk/Fairy-chess/blob/main/Balanced_fairy_chess_setup_by_theme.pdf

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Zekk1302

Board

8 × 8

Games

44

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5

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A simple complex chess-like game

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starmanlegend

Board

6 × 6

Games

33

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2

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A simple complex chess-like game

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starmanlegend

Board

6 × 6

Games

7

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0

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All the rules of Chess apply except that the King's normal move is replace by that of a Grasshopper and that stalemate's are a loss for the stalemated player. In order to move or capture, the grasshopper king (shown as an inverted king) must jump over a piece and land on the square immediately beyond that piece. The king may jump orthogonally or diagonally.Note that because of the asymmetrical King movement it is possible for the Kings to give check and even checkmate to one another.

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gbtami

Board

8 × 8

Games

31

Favorites

6

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Fairy-Stockfish built-in variant exposed as a casual community variant.

References: Wikipedia

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Fairy-Stockfish

Board

8 × 8

Games

31

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7

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New Shogi. The 'Keima (桂馬)' has been removed, and the 'Copper General (銅将)', 'Drunken Elephant (酔象)', and 'Knight (騎士)' have been added. With the exception of the King, all pieces can move like the King upon promotion, in addition to their existing movement. Pawn drop checkmates are also possible, and there are no draws.

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Snowmoondaphne

Board

9 × 9

Games

20

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4

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adds a new piece called the "seeker"

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Meogamer2

Board

7 × 8

Games

19

Favorites

3

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Board

8 × 8

Games

25

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3

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Fairy-Stockfish built-in variant exposed as a casual community variant.

References: Chess Variant Pages

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Fairy-Stockfish

Board

8 × 8

Games

23

Favorites

7

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Board

8 × 8

Games

57

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3

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Feresud

Board

10 × 8

Games

8

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3

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