Fortress chess

Four-player chess variant

Fortress chess (also known as Russian Four-Handed chess) is a four-player chess variant played in Russia in the 18th and 19th centuries. The board contains 192 squares including the fortresses at its corners. The fortresses contain 16 squares and various pieces are placed inside.

References

Pritchard, D. B. (1994). "Fortress Chess". The Encyclopedia of Chess Variants. Games & Puzzles Publications. pp. 111–12. ISBN 0-9524142-0-1.
Pritchard, D. B. (2007). "Fortress Chess". In Beasley, John (ed.). The Classified Encyclopedia of Chess Variants. John Beasley. pp. 324–25. ISBN 978-0-9555168-0-1.

External links

http://www.chessvariants.com/historic.dir/fortress.html
https://web.archive.org/web/20081013193034/http://www.quadibloc.com/chess/ch0206.htm

Chess variants (list)

Orthodox rules

Different starting position	Fischer random chess Displacement chess Transcendental chess
Different number of pieces	Dunsany's chess Handicap
Unorthodox board	Balbo's game Circular chess Cylinder chess Double chess Grid chess Hexagonal chess (Cross chess, Masonic chess) Infinite chess Millennium 3D chess Minichess (Los Alamos chess) Rhombic chess Spherical chess Three-dimensional chess Triangular chess

Unorthodox
rules with
traditional
pieces

Standard 8×8 board	Andernach chess Atomic chess Beirut chess Checkless chess Chessplus Circe chess Crazyhouse Cubic chess Dynamo chess Extinction chess Hostage chess Knight relay chess Legan chess Losing chess Madrasi chess Monochromatic chess Patrol chess PlunderChess Portal chess Progressive chess Three-check chess Way of the Knight
Multimove variants	Avalanche chess Kung-Fu Chess Marseillais chess Monster chess Progressive chess
Elements of chance	Dark chess Dice chess Knightmare Chess Kriegspiel Penultima
Unorthodox rules on an unorthodox board	Alice chess Apocalypse Chad Chessence Congo Diplomat chess Dragonfly Jeson Mor Parallel worlds chess Rollerball 5D Chess with Multiverse Time Travel

Unorthodox
rules using
non-traditional
pieces

Standard 8×8 board	Baroque Berolina Chakra Chess with different armies Duell Falcon–hunter chess Grasshopper chess Musketeer chess Pocket mutation chess
Compound pieces	Almost chess Capablanca chess Capablanca random chess Chancellor chess Embassy chess Grand Chess Janus Chess Maharajah and the Sepoys Modern chess Seirawan chess Tutti-frutti chess
Unorthodox boards and pieces	Chesquerque Chess on a really big board Courier-Spiel Dragonchess Gess Omega Chess Stratomic Dekle's triangular chess 2000 A.D. Wildebeest chess Wolf chess

Multiplayer

Inspired games

Chess-related
games

Historical	Chadarangam Chaturaji Chaturanga Courier chess Grant Acedrex Shatranj Short assize Tamerlane chess
Regional	Janggi variants Makruk Senterej Shatar Shogi Chu shogi Dai shogi Other variants Sittuyin Xiangqi Jungle Banqi Manchu chess Game of the Three Kingdoms Game of the Three Friends Game of the Seven Kingdoms Other variants