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- ZZ-Chess . Large variant with a new zig-zag piece. By Laurent Dubois.
- Zwangkrieg. Pieces affect other pieces' movement, including forced movement. (12x12, Cells: 144) By Bob Greenwade.
- ZigZag Madness. Introducing the 2-path bent riders: the ZigZag Bishop and ZigZag Rook. By Charles Daniel.
- ZigZag Madness . Its madness when the standard chess pieces clash with ZigZag Bishop, ZigZag Rook, Ferz-Knight, Wazir-Knight and Ninja Pawns! By Charles Daniel.
- ZigZag Madness. Featuring the crooked dual path sliders: the ZigZag Bishop and the ZigZag Rook. (10x10, Cells: 100) By Charles Daniel.
- Zhou Xia. Two decimal variants played with very powerful Xiangqi-like pieces. By Christine Bagley-Jones.
- Zeppelin Chess. Introducing the Zeppelin, which can fly to any empty square orthogonally (with zrf). By M Winther.
- zephyr chess. quinquereme chess with squirrels, airplanes, and renn cavaliers! By Andy Maxson.
- Zanzibar-XL. Beyond Metamachy. 80 pieces of 19 different types, with historical lineage. By Jean-Louis Cazaux.
- Zanzibar-XL. Further step after Metamachy. 80 pieces of 19 different pieces, with historical lineage. By Jean-Louis Cazaux.
- Zanzibar-S. A large CV with 72 pieces of 17 different types. Bigger than Metamachy. By Jean-Louis Cazaux.
- Zanzibar-S. A game in between Metamachy and Zanzibar-XL with 36 pieces per side. Preferred by some to the -XL version. By Jean-Louis Cazaux.
- Yoto. Variant with heavy Xiang Qi influences marks Year of the Ox. (9x9, Cells: 81) By Charles Gilman.
- Yonin Toyang Mitregi. Four-player variant with returns from capture and promotion to Yang Qi pieces. (13x13, Cells: 169) By Charles Gilman.
- Yonin Shogi. 4-handed Shogi variant. (9x9, Cells: 81) Inventor: Ota Mitsuyasu.
- Yonin Bishogi. Variant based on Yonin Shogi but with FIDE pieces. (11x11, Cells: 121) By Charles Gilman.
- Year of the Pig Variants. Subvariants extending the forward moves in assorted previous variants old and new. By Charles Gilman.
- Yangsi. A very playable chess variant with 12 different pieces on a 10x10 board. By A. M. DeWitt.
- Yangsi. A very playable chess variant with 12 different pieces on a 10x10 board. By A. M. DeWitt.
- Yáng Qí. Yankee ingenuity adds new power to Chinese Chess. (9x10, Cells: 90) By Fergus Duniho.
- Yagbap. A decimal Chess/Amazons hybrid. (10x10, Cells: 100) By Jared B. McComb.
- Yáng Qí - Oriental Graphics . Yankee ingenuity adds new power to Chinese Chess. By Fergus Duniho.
- XSChess. Xiangqi plus shogi plus chess. (9x14, Cells: 126) By Hafsteinn Kjartansson.
- Xiangaroo. Xiang Qi variant with compounds of back-rank pieces. (9x10, Cells: 90) By Charles Gilman.
- Xiang Courier. Xiang Qi enhanced in the style of Courier. (12x10, Cells: 120) By Charles Gilman.
- Xhetrast. A conservative Contrast version of Xhess. (10x10, Cells: 100) By Ivan Derzhanski.
- Xhess Photographs. Photo's of large chess variant. Inventor: David Howe.
- Xhess . Version using Alfaerie graphics. By David Howe.
- Xhess. Decimal variant with Nightriders and Cannons. Inventor: David Howe.
- Xhess . Decimal variant with Nightriders and Cannons. By David Howe.
- Xhess. Decimal variant with Nightriders and Cannons. (10x10, Cells: 100) By David Howe.
- X Chess. Hourglass shaped board with piece density of nearly 50%, and diagonal pieces. By Jeremy Gabriel Good.
- Wreckage! . Features 3 new pieces: the Detonator, Dragon and the Flying Guillotine plus 5 Ninja Pawns. By Charles Daniel.
- Wreckage!. Introducing the dual mode Flying Guillotine, the Detonator that destroys adjacent pieces, and the advancer / withdrawer Dragon. By Charles Daniel.
- Wreckage!. A highly tactical game featuring the Dragon that captures by approach or retreat, the Detonator and the Flying Guillotine. (10x10, Cells: 100) By Charles Daniel.
- Wolf Chess. Older European game with unusual pieces. Inventor: Dr. Arno von Wilpert.
- Wolf Chess. Half-century old variant on 8 x 10 board with many unusual pieces. Inventor: Dr. Arno von Wilpert.
- Wolf Chess. Half-century old variant on board of size 8 by 10. (8x10, Cells: 80) Inventor: Dr. Arno von Wilpert.
- Wizard's War . Game with piece-creating Wizards and a board divided into arena and enchanted sections. By Michael Nelson.
- Wizard's War. Game with piece-creating Wizards and a board divided into arena and enchanted sections. (10x10, Cells: 84) By Michael Nelson.
- Wizard's War. Play this game with piece-creating Wizards and a board divided into arena and enchanted sections! Inventor: Michael Nelson.
- Wizard of Oz Nonal Chess. Road of five squares on Shogi board. (9x9, Cells: 81) By George William Duke.
- Wizard of Oz Decimal Chess. Based on 1900 book 'Wizard of Oz' and 1939 film. (10x10, Cells: 100) By George William Duke.
- Wizard Chess. Variant on 12 by 7 board with fantasy pieces. (7x12, Cells: 84) Inventor: Paul E. Newton and Andrew P. Newton.
- Wizard Chess . Variant on 12 by 7 board with fantasy pieces (includes Advanced Wizard Chess). Inventor: Paul E. Newton and Andrew P. Newton.
- Wildeurasian Qi. Variant on 10 by 10 board combining ideas of several existing variants. (10x10, Cells: 100) By Charles Gilman.
- Wildeurasian Qi. Variant on 10 by 10 board combining ideas of several existing variants. Inventor: Charles Gilman.
- Wildebeest Decimal Chess. A Wildebeest Chess adaptation to the decimal board. By Erik Lerouge.
- Wildebeest Chess. Game with several kinds of jumpers; one of the more-often played large-board variants. Inventor: R. Wayne Schmittberger.
- Wildebeest Chess. Play this large variant featuring a new piece on Jocly. Inventor: R. Wayne Schmittberger.
- Wildebeest Chess. Stars the Wildebeest which moves as knight or camel. Inventor: R. Wayne Schmittberger.
- Wildebeest Chess. Variant on an 10 by 11 board with extra jumping pieces. (11x10, Cells: 110) (Recognized!) Inventor: R. Wayne Schmittberger.
- Wildebeast9. A Variant of Wildebeast Chess. By .
- Wildebeest Chess . Variant on an 10 by 11 board with extra jumping pieces. Inventor: R. Wayne Schmittberger.
- Wild Tamerlane Chess. Game Courier Preset to play Wild Tamerlane Chess, a fury on 11x11 board. (11x11, Cells: 121) By Jean-Louis Cazaux.
- Wild Tamerlane Chess. A clash on a 11x11 board with pairs Queens and Eagles/Gryphons. (11x11, Cells: 121) By Jean-Louis Cazaux.
- Wild Tamerlane. Play this modern version of Tamerlane Chess on Jocly. Inventor: Jean-Louis Cazaux.
- Wild Kingdom Test. Rules and play testing for Wild Kingdom. (8x10, Cells: 80) By Nick Wolff.
- Wild Kingdom. Animal armies battle for control of the Wild Kingdom! (10x10, Cells: 100) By Nick Wolff.
- Wild Kingdom. Battle for jungle dominance with your own army of animals, each with special abilities. By Nick Wolff.
- Wide Nightrider Chess. Chess on a 12x10 board with Nightriders, Champions and fast castling rules. By Kevin Pacey.
- Where Eagles Fly . Missing description By Michael Nelson.
- Where Eagles Fly. Missing description (9x9, Cells: 81) By Michael Nelson.
- Westfield Chess. Unidirectional hemed variant introducing enhanced Nimrod pieces. (12x8, Cells: 96) By Charles Gilman.
- Weltschach. 3d Wildeurasian variant including Unicorn and Sling moves and covering all 2nd-perimeter destinations. (8x(8x8), Cells: 512) By Charles Gilman.
- Webball. Board that can be visualized as globe shaped spider web, based on dodecahedron. By J. R. Schmidt.
- Weave and Dungeon . Abstract game played on a board divided into Weave and Dungeon, with movement following different rules on each part. By Dan Troyka.
- Weave and Dungeon. Abstract game played on a board divided into Weave and Dungeon, with movement following different rules on each part. (9x9, Cells: 81) By Dan Troyka.
- Waterfall Xinag-Qi. An elegant 3D xinag-qi variant. (9x(9x10), Cells: 810) By Daniil Frolov.
- Warlord: Clash of Arms. Missing description By Joe Joyce.
- The Warlord Games. Structured multi-move abstract strategy games of battle. By Joe Joyce.
- Warlord. Missing description By Joe Joyce.
- The War of World`s Warriors Chess. Missing description (10x10, Cells: 100) By Namik Zade.
- The War of World`s Warriors Chess. Logical continuation of Clash of Civilizations Chess, optimizes piece density within limits of 50% +/- 2. By Namik Zade.
- War of the Worlds. Chess army from planet Earth against the Martian forces of Jetan. (10x10, Cells: 100) By Jean-Louis Cazaux.
- War of the Worlds . Chess army from planet Earth against the Martian forces of Jetan. By Jean-Louis Cazaux.
- The War of the Stars . Missing description By Namik Zade.
- War of the Roses. Missing description (12x12, Cells: 144) By Abdul-Rahman Sibahi.
- Walkers and Jumers Board . For printing a landscape board. By Joe Joyce.
- Walkers and Jumers Board . For printing a portrait board. By Joe Joyce.
- Walkers and Jumpers. Joe Joyce's multidimensional game on the Game Courier. Inventor: Joe Joyce.
- Walkers and Jumpers. Walkers and Jumpers is a combination 2D - 4D chancellor chess variant that uses 9 pieces and 9 pawns per side. (7x(3x(3x3)), Cells: 189) By Joe Joyce.
- Waffle Chess with Manticore and Falcon. Expansion for waffle chess. (10x9, Cells: 90) By Aurelian Florea.
- Waffle Chess with Gryphon and Falcon. Expansion for waffle chess. (10x9, Cells: 90) By Aurelian Florea.
- Waffle Chess. Chess on a 10x8 board with waffles added. (10x8, Cells: 80) By Kevin Pacey.
- WAD Chess. Chess on a 10x8 board with WADs (Champions) added. (10x8, Cells: 80) By Kevin Pacey.
- WAD Chess. Chess on a 10x8 board with WADs (Champions) added. (10x8, Cells: 80) By Kevin Pacey.
- Wa Shogi pictures. Photos of a commercial Wa Shogi set.
- Wa Shogi. A variant of Japanese Chess on an 11 by 11 board. (Link.).
- Wa Shogi. Game with many different rather weak pieces, with or without drops. (11x11, Cells: 121)
- Wa Shogi. Large Shogi variant from the 17th century or earlier.
- Vyremorn Chess . Large variant on two overlapping square boards. Inventor: Nathan McDonald.
- Vyremorn Chess. Large variant on two overlapping square boards. (Cells: 132) By Nathan McDonald.
- Vyremorn Chess Pictures. Photo's of large chess variant. Inventor: Nathan McDonald.
- Viking Chess. Armies start side-by-side on a 12 x 7 board. (12x7, Cells: 84) Inventor: Tomas Forsman.
- Viking Chess. Play Viking Chess online with Game Courier. Inventor: Tomas Forsman.
- Viking Chess . Armies start side-by-side on a 12 x 7 board. By Tomas Forsman.
- Vierschach. 19th Century 4-player game where allies start off at right angles to each other. (14x14, Cells: 160) Inventor: G. Arthur Lutze.
- Victorian Chess. Play Victorian Chess on Game Courier. Inventor: David Paulowich and John Kipling Lewis.
- Victorian Chess. Capablanca variant with the most powerful pieces starting on the outside. (10x8, Cells: 80) Inventor: John Kipling Lewis and David Paulowich.
- Very Heavy Chess. A lot of firepower with all compounds of classical chess pieces. By Jean-Louis Cazaux.
- Very Heavy Chess. Play Very Heavy Chess on Game Courier. Inventor: Jean-Louis Cazaux.
- Venomous . The Sissa and Sorcerer Snake on a large board chess system with Ninja Pawn drops. By Charles Daniel.
- Venomous. New system of chess on 10x10 board with new pieces: the Sorcerer Snake and the even more venomous Sissa. (10x10, Cells: 100) By Charles Daniel.
- Venomous. Play this new large board system of chess with the Sissa, Sorcerer Snake and Ninja pawns. By Charles Daniel.
- Venator Chess. Introducing the Venator, a bifurcation cannon related to the Korean cannon, on a Gustavian board (zrf available). By M Winther.
- Vanguard Chess. Game Courier preset for Vanguard Chess. (16x16, Cells: 256) By Bob Greenwade.
- Vanguard Chess. Game on 16x16 board, with 48 pieces per player. (16x16, Cells: 256) By Bob Greenwade.
- Upchess. Pieces moves depend on which rank piece is on on 11 by 11 board. (11x11, Cells: 121) By Mark Leff.
- UOS (Universal Origin Spiel). Variant on a board with 113 diamond-shaped spaces. (Cells: 113) Inventor: Gerhard Loos.
- Universal Handicap Chess . Missing description By Namik Zade.
- Univers Chess. Play Univers Chess with Jocly. Inventor: Fergus Duniho.
- Univers Chess. A Carrera's Chess variant based on Bruno Violet's Universal Chess. (10x8, Cells: 80) By Fergus Duniho.
- Unicorn Great Chess. Enjoyable game: Great Chess pawn structure encloses two half-ducks - "lions" - with exciting bishop-nightrider - "unicorn.". Inventor: David Paulowich.
- Unicorn Great Chess. Lions have been added to Unicorn Chess! (10x10, Cells: 100) By David Paulowich.
- Unicorn Chess. 10x10 variant with a new piece that moves as a Bishop or a Nightrider. (10x10, Cells: 100) By David Paulowich.
- Unicorn Chess . 10x10 variant with a new piece that moves as a Bishop or a Nightrider. Inventor: David Paulowich.
- Uneven pieces chess. The two armies have their back rank material distributed in different ways, discouraging trades. (10x8, Cells: 80) By Andrew L Smith.
- Undenary Chess. Large variant with superpowerful King; a square version of Hexmate. (11x11, Cells: 121) By Michael A. Rouse.
- Unconventional Warfare Chess. Variant based on modern warfare. (10x10, Cells: 84) By Luiz Carlos Campos.
- Unconventional Warfare Chess . Variant based on modern warfare. Inventor: Luiz Carlos Campos.
- Ultrachess. Chess variant with two queens on 9 by 8 board. (9x8, Cells: 72)
- Ultra Slanted Escalator Chess . Game on an asymmetrical board of 84 squares with Crabs and Ultras. Inventor: David Short.
- Ultra Slanted Escalator Chess. Game on an asymmetrical board of 84 squares with Crabs and Ultras. (10x9, Cells: 84) By David Short.
- Ultra Chess. On 10 by 10 board with two queens, and major pieces have an additional king's move. Inventor: Ruggero Micheleto.
- Ultra Chess. On 10 by 10 board with two queens, and major pieces have an additional king's move. (10x10, Cells: 100) By Ruggero Micheleto.
- Ulchesgi. Like Ultima and Chess and Shogi. (12x8, Cells: 96) By (zzo38) A. Black.
- U12 Shogi. A new kind of large shogi game. (12x12, Cells: 144) By (zzo38) A. Black.
- Typhoon (Revised) . Missing description By Adrian King.
- Typhoon (Revised). Missing description (12x12, Cells: 144) By Adrian King.
- Typhoon. Variant on 12 by 12 board with many different pieces. (12x12, Cells: 144) By Adrian King.
- Typhoon . Variant on 12 by 12 board with many different pieces. By Adrian King.
- Two Pronged Chess. 2 "simultaneous" moves per turn with separate pieces. By John Whelan.
- Two Large Shatranj Variants. Missing description (10x10, Cells: 100) By Joe Joyce.
- Two Large Multi-Move Games. Two large multimove variants with multiplayer potential. (24x12, Cells: 288) By Joe Joyce.
- Two Kingdoms. A decimal variant with a more powerful knight, and an added Archer piece. (10x10, Cells: 100) By Nuno Cruz.
- Two Kingdoms . A decimal variant with a more powerful knight, and an added Archer piece. Inventor: Nuno Cruz.
- Twin-board Ecumenical Chess. Ecumenical Chess with extra Pawns, on two FIDE boards joined together on one or more edges. (Cells: 128) By Charles Gilman.
- Twin Orthodox Chess. Two kings on a 10x10 board. Inventor: Vernon Rylands Parton.
- Twenty-First Century Chess. An updating of Chess for the video game generation, on a 10x8 board with Barons and Jesters. (10x8, Cells: 80)
- Turret Chess. Introducing the Turret, which moves like a queen, and can hurl pieces over its head (zrf available). By M Winther.
- Turkish Great Chess, variation VI. Large variant adding an Archbishop and a General (Amazon). (10x10, Cells: 100) Inventor: Savio Cagliostro.
- Turkish Great Chess, variation VI. Large variant adding an Archbishop and a General (Amazon). Inventor: Savio Cagliostro.
- Turkish Great Chess, variation V. Large variant with three new pieces. (13x13, Cells: 169)
- Turkish Great Chess, variation V. Large variant with three new pieces.
- Turkish Great Chess, variation IV. Play this variation of Great Chess by e-mail!
- Turkish Great Chess, variation III. John Gollon's third out of six variations on Great Chess.
- Turkish Great Chess, variation II. Gollon's large historical variant.
- Turkish Great Chess, variation IV. John Gollon's fourth variation. This completes the set of 6. (14x14, Cells: 168)
- Turkish Great Chess, variation III. John Gollon's third of six variations on Great Chess. (12x12, Cells: 144)
- Turkish Great Chess, variation II. Gollon's large historical variant. (10x10, Cells: 100)
- Turkish Chess. 8x10 board with different combination pieces, Vao and Pao. (8x10, Cells: 80) By Köksal Karakus.
- Turkish Chess . 8x10 board with different combination pieces, Vao and Pao. Inventor: Köksal Karakus.
- True King. A Grand Chess variant. (10x10, Cells: 100) By Roxy Wu.
- Troitzky Chess. Where the mate by two knights is possible. Inventor: Paul Byway.
- Triple Crown. A three-halves variant making use of the cross-centre step. (15x15, Cells: 150) By Charles Gilman.
- TriMac HexChess. Hexagonal XiangQi. (Cells: 135) By Graeme C Neatham.
- TriMac HexChess . Zillions Rule File and Graphics. By Graeme C Neatham.
- TriMac 3 Friends. Hexagonal Game of 3 Friends. (Cells: 207) By Graeme C Neatham.
- Triagonal Chess. 3D with triagonal moves and a hole in the middle. (8x(8x8), Cells: 504) By (zzo38) A. Black.
- Tremendous Chess. Tremendous Chess is a large chess variant that is played on a 16×16 chessboard with 112 pieces per player. (16x16, Cells: 256) By Вадря Покштя.
- Treeleaders Chess . Download these files to play this large variant with non-similar armies with Zillions of Games! Inventor: Erez Schatz.
- Treeleaders Chess. Large variant with non-similar armies. (9x10, Cells: 90) By Erez Schatz.
- TreeLeaders Chess. Preset for Treeleaders Chess (invented by Erez Schatz). Inventor: Erez Schatz.
- Tree garden chess . Large chess variant on 10 by 10 board with 4 by 4 area missing from the middle. Inventor: William Overington.
- Tree garden chess. Large chess variant on 10 by 10 board with 4 by 4 area missing from the middle. (10x10, Cells: 84) By William Overington.
- Trebuchet Chess. Introducing the Trebuchet, an active catapult piece that slings pieces over its head (zrf exists). By M Winther.
- Trappist-1. Chess game with no boundaries. includes Guard, Chancellor, Hawk, and Huygens. () By V. Reinhart.
- Trapper Chess. Missing description (13x9, Cells: 117) By Patrik Hedman.
- Transporter Chess. Large variant with transporters and several new pieces. (10x10, Cells: 84) By Andrew P. Newton.
- Transporter Chess . Large variant with transporters and several new pieces. Inventor: Andrew P. Newton.
- Trans-Dimensional Chess. Large 3-D game with a field of twenty 3x3x3 cubes arranged in three levels. (3x(), Cells: 540) By Larry L. Smith.
- Trans-Dimensional Chess . Large 3-D game with a field of twenty 3x3x3 cubes arranged in three levels. By Larry L. Smith.
- The Tower Game. A simple three dimensional chess variant. (8x(5x5), Cells: 200)
- Tournoy . Pieces have orientation that can be rotated. By Jean-Louis Cazaux.
- Tournoy. Pieces have orientation that can be rotated. (9x9, Cells: 81) By Jean-Louis Cazaux.
- Touranian International . 10x10 Chess variant. Inventor: Lee Tomkow.
- Touranian International. 10x10 Chess variant. (10x10, Cells: 100) By Lee Tomkow.
- Toulousain Chess. Jean-Louis Cazaux's 12 x 12 chess variant dedicated to his town of Toulouse. Inventor: Jean-Louis Cazaux.
- Toulousain Chess. A chess variant on a red and black 12 x 12 board with 12 types of different pieces. (12x12, Cells: 144) By Jean-Louis Cazaux.
- Torus Chess. Large chess variant on torus shaped board. (16x8, Cells: 128) By Köksal Karakus.
- Torus Chess . Large chess variant on torus shaped board. By Köksal Karakus.
- Tommy's Towers. Description (no rules) of very large chess variant from DOS-program.
- The Toddler. Large variant with powerful pieces and an intricate net of protections. (11x11, Cells: 121) By Jean-Yves Boulay.
- The Toddler. Large variant with powerful pieces and an intricate net of protections. Inventor: Jean-Yves Boulay.
- Tjatoer!. A chess variant written in Python, designed to stress test engines. By Halfen Ludith.
- Titan Chess. Chess featuring dozenal board and seven diverse new pieces with multiple capture mechanisms and movement modes. (12x12, Cells: 144) By Charles Daniel.
- Titan Chess. In which, a new class of pieces such as Quad Bomber, Flying Bomber, and Raptor possess a unique fly-over capturing mechanism. By Charles Daniel.
- Timurid. Evolution of timur chess. (12x12, Cells: 144) By François Houdebert.
- Timur's Chess: Sample Game 1. A sample game of Tamerlane Chess.
- Tigrey. Combination of Expanded Chess and Tiger Chess. (12x12, Cells: 144) By Daniel Zacharias.
- Tigrey. Combination of Expanded Chess and Tiger Chess. (12x12, Cells: 144) By Daniel Zacharias.
- TigerSquares - 80 & 100. Missing description (10x8, Cells: 80) By Glenn Nicholls.
- Tiger Chess. A large game with fast-moving pieces. By Daniel Zacharias.
- Thunderstruck Server Chess. {This game seems broken…}. (10x8, Cells: 80) By Lev Grigoriev.
- Thud. Link to variant invented by Trevor Truran in association with Terry Pratchett. (15x15, Cells: 164) Inventor: Trevor Truran.
- Threehex. Hexagonal variant for three players. By Max Koval.
- Three Player Chess. On a large (217 hexagon) board. By Dennis Matthews.
- Three Fat Brothers Chess. On a 9x9 board with 3 royal pieces. (9x9, Cells: 81) By Sergey Sirotkin.
- Three Fat Brothers Chess . On a 9x9 board with 3 royal pieces. Inventor: Sergey Sirotkin.
- Thraex_Chess. Introducing the Thraex, which captures like a rook, but moves by the bifurcated jump method (zrf available). By M Winther.
- Third runner. Missing description By Daniil Frolov.
- Third runner. Missing description (12x8, Cells: 96) By Daniil Frolov.
- The Secret Invisible Pass Chess. Missing description By Namik Zade.
- Prisoner's Dilemma. Checkmate the King and rescue the Prisoner to win. (Cells: 84) By Steve Costa.
- The Principle of Transition applied in a Chess. Missing description By Namik Zade.
- Jetan, the game of. Extensive discussion of various versions of the rules of Jetan. (10x10, Cells: 100) Inventor: Edgar Rice Burroughs.
- The Emperor's Game. Variant on 10 by 10 board from 19th century Germany. (10x10, Cells: 100) Inventor: Peguilhen.
- Teutonic Knight"s Chess. Played on an oblong board with rarely used pieces: The teutonic knight, the archchancellor and the crown princess. (8x10, Cells: 80) By Jörg Knappen.
- Tetrahedral Chess . 3d chess variant with board in form of tetrahedron. By Mark Thompson.
- Tetrahedral Chess. Three dimensional variant with board in form of tetrahedron. (7x(), Cells: 84) By Mark Thompson.
- Terror Chess . Variant on 11 by 11 board with combination pieces. By Brian Wong.
- Terror Chess. Variant on 11 by 11 board with combination pieces. (11x11, Cells: 121) By Brian Wong.
- Terran Chess (Galactic Federation) . Chess from the 24th century? By Graeme C Neatham.
- Teramachy. Teramachy is the child of Metamachy with 12 rows and Terachess with 16 columns. By Jean-Louis Cazaux.
- Teramachy. A chess variant between Metamachy and Terachess. By Jean-Louis Cazaux.
- Terachess II. An unrealistic summit on a very large board of 16x16 squares and 128 pieces. By Jean-Louis Cazaux.
- Terachess II. A summit with 26 different pieces on a 16 x 16 board. There are 64 pieces per side of 26 different types. By Jean-Louis Cazaux.
- Terachess. Play this hexadecimal variant with 50% density on Jocly. Inventor: Jean-Louis Cazaux.
- Tenjiku Shogi pictures. Photos of a commercial Tenjiku Shogi set.
- Tenjiku Shogi. Fire Demons burn surrounding enemies, Generals capture jumping many pieces. (16x16, Cells: 256)
- Tenjiku Shogi. Play this large historical Shogi variant on Jocly.
- Tenjiku Shogi. Four hundred year old, large, historical variant of Shogi.
- Tengu Dai Shogi. Turbo version of Dai Shogi, with some Dai Dai Shogi pieces.
- TenCubed Chess. Variant on 10 by 10 board with combination pieces (Zillions file). (10x10, Cells: 100) By David Paulowich.
- TenCubed Chess. Play TenCubed Chess on Game Courier. (10x10, Cells: 100) Inventor: David Paulowich.
- TenCubed Chess. Variant on 10 by 10 board with combination pieces. (10x10, Cells: 100) By David Paulowich.
- Temple Island Chess. Solo game with shadow pieces. By Karen Robinson.
- Templar Chess. Features the unorthodox Templar on a board with eight extra squares. (8x10, Cells: 72) By Adrian Alvarez de la Campa.
- Templar Chess. Play Templar Chess on Game Courier. Inventor: Adrian Alvarez de la Campa.
- Tardis Taijitu. Xiang Qi board but with movable, bigger-inside-than-outside Fortresses. (3x(9x10), Cells: 144) By Charles Gilman.
- Tandem-84. Jim Aikin's Tandem-84 on the Game Courier. Inventor: Jim Aikin.
- Tandem-84. Variant on two boards of 7 by 6 rows with pieces moving between boards. (2x(6x7), Cells: 84) By Jim Aikin.
- Tandem-84 . Variant on two boards of 7 by 6 rows with pieces moving between boards. Inventor: Jim Aikin.
- TamerSpiel. Modern large chess variant with elements of historic chess variants. (12x8, Cells: 84) By Eric V. Greenwood.
- TamerSpiel. Modern large chess variant with elements of historic chess variants. Inventor: Eric V. Greenwood.
- TamerSpiel . Modern large chess variant with elements of historic chess variants. Inventor: Eric V. Greenwood.
- Tamerlane II. Cazaux's modern take on Tamerlane Chess. Inventor: Jean-Louis Cazaux.
- Tamerlane II. Modern variant based upon ancient large chess variant. (11x11, Cells: 121) By Jean-Louis Cazaux.
- Tamerlane chess: ms 7322 version. Information on historic variant of Tamerlane chess. (11x10, Cells: 112)
- Tamerlane chess. A well-known historic large variant of Shatranj. (11x10, Cells: 112) (Recognized!)
- Tamerlane Chess. Old Persian large-board game, widely-played in medieval times.
- Tamerlane II . Modern variant based upon ancient large chess variant. By Jean-Louis Cazaux.
- Tamerlane Chess . A well-known historic large variant of Shatranj.
- Tamerlan Chess . Westernized version using Alfaerie graphics.
- A Tale of Two Countries. This is a small diceless wargame. By Joe Joyce.
- Taikyoku Shogi (Unlimited Chess) Playing Pieces. Missing description
- Taikyoku Shogi. Taikyoku Shogi. Extremely large shogi variant. (36x36, Cells: 1296)
- Taikyoku Photographs. Missing description
- Tai Shogi pictures. Photos of a commercially available Tai Shogi set.
- Tai Shogi. Very large Shogi variant.
- Symmetron! 112. Large version of Symmetron!, with a third modifier. (11x10, Cells: 112) By Antoine Fourrière and Roberto Lavieri.
- Symmetron! 112. Large version of Symmetron!, with a third modifier. Inventor: Antoine Fourrière and Roberto Lavieri.
- Symmetron! 112 . Large version of Symmetron!, with a third modifier. By Antoine Fourrière and Roberto Lavieri.
- The Symmetrical Chess Collection . Web site containing a collection of Chess Variants based on perfect symmetry. By Derek Nalls.
- Symmetrical Chess Collection. Collection of several large symmetric chess variants with only line pieces. By Derek Nalls.
- Symmetrical Chess Collection. Collection of several large symmetric chess variants with only line pieces. Inventor: Derek Nalls.
- Symmetric Sissa. Problem based on an actual game. By Ben Good.
- Symmetric Sissa . Variant on 9 by 9 board with symmetric setup and two Sissa's (generalized Knight-like sliders). Inventor: Carlos Cetina.
- Symmetric Sissa. Variant on 9 by 9 board with symmetric setup and two Sissa's (generalized Knight-like sliders). (9x9, Cells: 81) By Carlos Cetina.
- Symmetric Chess. Play chess with a couple of queens flanking the king. By Carlos Cetina.
- Symmetric Chess. Variant with two Queens flanking the King and Bishops Conversion Rule. (9x8, Cells: 72) By Carlos Cetina.
- Symchess. Missing description (10x10, Cells: 100) By Namik Zade.
- Symchess. 10 x 10 setup with Capablanca-esque pieces and camels or fils. By Namik Zade.
- Sweet 16 Chess. Play this hexadecimal variant that uses only Chess pieces on Jocly.
- Suzumu Shogi. 16x16 variant based on Tenjiku Shogi. (16x16, Cells: 256) By A. M. DeWitt.
- Supremo Superchess. Decimal variant with extra powerful pieces. (10x10, Cells: 100) By Lim Ther Peng.
- Superschaak. Book and sets for playing variants with many new types of chess pieces. Inventor: Henk van Haeringen.
- Superchess in Corus Chess tournament. Missing description Inventor: Henk van Haeringen.
- Superchess and Monarch. Booklet in English and Dutch and book in Dutch about large chess variants with fantasy pieces. Inventor: Henk van Haeringen.
- Super-Chess. On a 12x12 board with slightly more powerful pawns and knights. Armies start back-to-back. (12x12, Cells: 144) By Prashant Hindurao Sawant.
- Super Maharadscha . Missing description By Namik Zade.
- Super Knights Grand Chess. Missing description (10x10, Cells: 100) By Charles Daniel.
- Super Knights Grand Chess . The original Super Knights with the Archbishop, Amazon, and Chancellor, as well as two more exciting and innovative games. By Charles Daniel.
- Super Knights Chess 2. The Archbishop and Chancellor are complimented by a Ferz Knight, a Wazir Knight and Ninja Pawns. By Charles Daniel.
- Super Chess III . Big proprietary game with archers and cyclopses. Inventor: Ed Ginsberg.
- Super Chess III . Big proprietary game with archers and cyclopses. (10x10, Cells: 100) By Ed Ginsberg.
- Super Chess III. Big proprietary game with archers and cyclopses. Inventor: Ed Ginsberg.
- Super Chess II. Proprietary game from the 1970's. Inventor: Ralph Lauterbach.
- Super Chess 1993. Missing description (14x14, Cells: 196) Inventor: Michael N Goldshteyn.
- Sunflower HexChess. Hexagonal Chess in-the-round. (Cells: 120) By Graeme C Neatham.
- Sultanspiel. Play this large 19th century variant on Jocly. Inventor: Peguilhen.
- The Sultan's Game. Variant on 11 by 11 board from 19th century Germany. (11x11, Cells: 121) Inventor: Peguilhen.
- Sudoku War. A fight that takes place in a Sudoku. (9x9, Cells: 81) By Joost Aan de Brugh.
- Sudoku War . A fight that takes place in a Sudoku. By Joost Aan de Brugh.
- Sudoku Chess . Missing description By Doug Chatham.
- SUCCHESS. Missing description (10x10, Cells: 100) By Djafer Medjahed.
- Strong Yang. Another way of applying the Nearlydouble principle to a variant with Cannons. (13x13, Cells: 169) By Charles Gilman.
- Stratomic. Decimal variant with a nuclear missile piece. (10x10, Cells: 100) Inventor: Robert Montay-Marsais.
- StrategiChess II . Large, multi-player, mult-board variant with new piece types. (14x14, Cells: 196) By Alan Cartwright.
- StrategiChess . Large multi-player, multi-board chess variant. (14x14, Cells: 196) By Alan Cartwright.
- StrataChess v1.0. separate Strategic and Tactical gameplay. 2-6 players. Element of Chance. Terrain. Build your own armies. By Prussia General.
- Strange Chess. A large (12x12) chess variant. (12x12, Cells: 144) By Mark Hedden.
- Storm the Ivory Tower . Play this Smess adaptation of Chinese Chess with Zillions of Games. By Fergus Duniho.
- Storm the Ivory Tower. Play this Smess adaptation of Chinese Chess by email. By Fergus Duniho.
- Stones and Relays. An extended version of Eight-Stone Chess. (8x9, Cells: 72) By Jim Aikin.
- Stone's Chess. Chess variant with the addition of two Archbishops. (10x8, Cells: 80) By rhett applestone.
- Stheno Chess. Introducing the repulsive Stheno, which repels pieces as far as possible in the alignment direction (zrf available). By M Winther.
- Step by Step Handicap Chess . Missing description By Namik Zade.
- Stelliform 6 player Chess. Stellisch from Wellisch, Stellicorn from Revergent, and Stellgi and Hexgi. (17x17, Cells: 121) By Charles Gilman.
- Stealth Ninja Chess . Dynamic but balanced game with short-range leapers, and unusual sliding pieces: the Stealth Gryphon and Anti-Gryphon. By Charles Daniel.
- Stealth Ninja Chess. Features a Drop Zone and diverse pieces such as Ninja Guards, Ninja Warriors, Stealth Gryphon, Anti-Gryphon, and Ninja Pawns. By Charles Daniel.
- Stealth Ninja Chess. Chess with two pairs of linear short-range leapers, and drop zone to add the Stealth Gryphon, Anti-Gryphon and Ninja Pawns. (10x10, Cells: 104) By Charles Daniel.
- Star Pool Chess . Large variant of Makruk, with a center non-square that acts as a bridge. Inventor: Peter Aronson and Tony Quintanilla.
- Star Pool Chess. Large variant of Makruk, with a center non-square that acts as a bridge. By Peter Aronson and Tony Quintanilla.
- Star Pool Chess Zillions Saved Game . Download this file to see a saved game. By Peter Aronson and Tony Quintanilla.
- Star Pool Chess. Large variant of Makruk, with a center non-square that acts as a bridge. (Cells: 84) Inventor: Peter Aronson and Tony Quintanilla.
- Stack Chess. Pieces are stacks of chips. (10x10, Cells: 100) By Doug Chatham.
- SSShess . Missing description By Namik Zade.
- SSShess. Attempt at optimal setup with the most popular in the West and in the East chess pieces with the optimum piece density. By Namik Zade.
- SSShess. Missing description (10x10, Cells: 100) By Namik Zade.
- Squarcle Chess. Orthogonal pieces travel in square loops, diagonal pieces reflect. (8x8, Cells: 64) By Christan Hupp.
- Squarcle Chess . Orthogonal pieces travel in square loops, diagonal pieces reflect. Inventor: Christan Hupp.
- Spinal Tap vs Terror Chess. The Spinal Tap Chess army vs the Terror Chess army in the battle of the 11x11 variants. (11x11, Cells: 121) By David Short.
- Spinal Tap vs Terror Chess . The Spinal Tap Chess army vs the Terror Chess army in the battle of the 11x11 variants. Inventor: David Short.
- Spinal Tap Chess Redux. Updated version of Spinal Tap Chess with some pieces from Existentialist Chess. (11x11, Cells: 121) By David Short.
- Spinal Tap Chess. Variant on an 11x11 board with a once-a-game mass 'Battle Move' of Pawns and Crabs. (11x11, Cells: 121) By David Short.
- Spinal Tap Chess . Variant on an 11x11 board with a once-a-game mass 'Battle Move' of Pawns and Crabs. Inventor: David Short.
- Spinach Chess. Right to make powerfull move alternates between players in variant with two kings. (8x8, Cells: 68) By Hans L. Bodlaender.
- SpaceWar. SpaceWar rules. (16x12, Cells: 192) By Joe Joyce.
- SpaceWar. SpaceWar. By Joe Joyce.
- Sovereign Chess. Ten neutral armies can be activated on this 16 x 16 board. (16x16, Cells: 256) By Mark Bates.
- Sosarian Chess. 12x8 Game with Capablanca-type pieces plus two lions. By Greg Strong.
- Sorcerer Chess. Big board chess featuring the Sorcerer (Zebra compund) and the Conjurer (Camel compound). By Charles Daniel.
- Sorcerer Chess. Practice the art of sorcery with two pairs of extra long leaping pieces: the Sorcerers and Conjurers. (10x10, Cells: 104) By Charles Daniel.
- The Sons of Mithra. Computer program for playing fantasy variant. Inventor: Michael Chang Gummelt and Holly Gummelt.
- The Sons of Mithra. Elaborate Fantasy variant with 13 different types of pieces per side. (10x10, Cells: 100) Inventor: Michael Chang Gummelt and Holly Gummelt.
- Snowflake Xiang Qi. A better Xiang Hex. (Cells: 140) By John Smith.
- SMIRF. Program that plays various 8x10 chess variants.
- Skidoo Chess. Pieces can "skidoo" into an interior board. (2x(8x8), Cells: 128) By John Smith.
- Skica. 10x10 with Ski pieces and Camels. (10x10, Cells: 100) By Daniel Zacharias.
- Skica. 10x10 with Ski Pieces and Camels. (10x10, Cells: 100) By Daniel Zacharias.
- Skandaran Chess. Download Skandaran Chess at Zillions Website. By Francisco Marzoa.
- Skandaran Chess. Large variant with 32 pieces per side. (12x12, Cells: 144) By Francisco Marzoa.
- Sissa. Variant on 9 by 9 board with Sissa's. (9x9, Cells: 81) By Carlos Cetina.
- Sissa . Variant on 9 by 9 board with Sissa's, which move like a Bishop than a Rook, or like a Rook, then a Bishop. Inventor: Carlos Cetina.
- Sinojewish Chess. Hexagonal approximate analogue to Wildeurasian Qi. (13x13, Cells: 127) By Charles Gilman.
- Sinyeonsanggi (新演象棋). I dramatized Sin-yeon-sang-hui (新演象戱), one of the variations of the Joseon Dynasty, in Xiangqi style. By Daphne Snowmoon.
- Silver Elephant Chess. Missing description (10x8, Cells: 80) By Jose Carrillo.
- Siege Chess. Historic chess variant with fortress on cross-shaped board.
- Shuuro. Large variant where you build your own army. (12x12, Cells: 144) Inventor: Alessio Cavatore.
- Shuffle Version Azchess . Missing description By Namik Zade.
- Shoxiang 108. A combination of Shogi and Xiang Qi on a number of ranks divisible by both 2 and 3. (9x12, Cells: 108) By Charles Gilman.
- Shosu Shogi. 10x10 Shogi variant with Queens and more powerful promoted pieces. By A. M. DeWitt.
- Shosu Shogi. 10x10 Shogi variant with Queens and more powerful promoted pieces. By A. M. DeWitt.
- Short Sliders. Pieces are initially limited to 4 spaces (if that), and promote to longer moves. (12x16, Cells: 192) By Bob Greenwade.
- SHORANJI Maximus. 9 x 12 variant of Six Fortresses Short Range. 2-Step pawn initial move option. By Gary K. Gifford.
- Shoko Shogi. Smaller variant of Hook Shogi on a 13x13 board. (13x13, Cells: 169) By A. M. DeWitt.
- Shogi-set Nearlydouble Variants. Variants using two Shogi sets, minus a second King aside, but with moves adjusted for a large board. (13x12, Cells: 156) By Charles Gilman.
- Shogi-of-Chesstonia. 9 x 12 Shogi Variant that includes a Queen and some Modern Shatranj Pieces. (9x12, Cells: 108) By Gary K. Gifford.
- Shogi-of-Chesstonia. 9 x 12 Shogi Variant that includes a Queen and some Modern Shatranj Pieces. By Gary K. Gifford.
- Shogi With Pokémons. Pokemons with special powers are added to an otherwise normal shogi board. (11x11, Cells: 121) By (zzo38) A. Black.
- Shogi with Cannons. Missing description (9x9, Cells: 81) By John Smith.
- Shogessi.... A link to the Tabletop Simulator module. Updated rules/graphics. (17x(17x19), Cells: 289) By Eric Watkins.
- Shogessi (The Allday Wars) . An original large, multiplayer Chess/Shogi variant.
- Shogchess. Missing description (9x11, Cells: 99) By Hafsteinn Kjartansson.
- Shikaar. Missing description (9x9, Cells: 79)
- Shatranj Plus . Play four large historical variations of Shatranj including Tamerlane Chess!
- Shatranj of Troy. A Shatranj variant with Shogi-like drops, a Trojan Horse (with 6 pieces inside),. (9x9, Cells: 81) By Gary K. Gifford.
- Shatranj of Troy. A Shatranj variant with Shogi-like drops, a Trojan Horse (with 6 pieces inside). By Gary K. Gifford.
- Shatranj of Troy. A Shatranj variant with Shogi-like drops, a Trojan Horse (with 6 pieces inside). Inventor: Gary K. Gifford.
- Shatranj Kamil X. Shatranj Kamil, with new pieces from Jetan, Shogi and Xiangqi. (10x10, Cells: 100) By David Paulowich.
- Shatranj Kamil II. Large historic shatranj variant with new piece: dabbabah or war machine. (10x10, Cells: 100)
- Shatranj Kamil I. Large shatranj variant with new piece: camel. (10x10, Cells: 100)
- Shatranj al-Sultan. Normal Chess + Alibaba , with a Sultanic flavour . (10x8, Cells: 80) By Abdul-Rahman Sibahi.
- Shako_Balbo. Game with Diamond Shape Board. By .
- Shako . Cannons and elephants are added in variant on 10 by 10 board. (10x10, Cells: 100) By Jean-Louis Cazaux.
- Shako. Play this Xiangqi-inspired decimal variant on Jocly. Inventor: Jean-Louis Cazaux.
- Shako. Cannons and elephants are added in variant on 10 by 10 board. Inventor: Jean-Louis Cazaux.
- Shako. Cannons and elephants are added in variant on 10 by 10 board. (10x10, Cells: 100) Inventor: Jean-Louis Cazaux.
- Shafran's Hexagonal Chess. I G Shafran's Game on the Game Courier. Inventor: Isaak Grigorevich Shafran.
- Sha'rah. Missing description (13x13, Cells: 169) By Patrik Hedman.
- sFhIoDgEi. A variant nesting two different smaller variants within it. (17x17, Cells: 289) By Charles Gilman.
- Set 3 of 10x8 chess mating problems. Missing description By Sam Trenholme.
- Sequence Of M X N Chess Games. A chess variant for boards of size M by N, for about all pairs of positive integers M, N.
- Sequence of Fibonacci and Lucas Chess Design Games. Variants based on Fibonacci numbers.
- Seenschach. Variant on 10 by 10 board with lake in the middle and new pieces. (10x10, Cells: 84) By Jörg Knappen.
- Seenschach . Variant on 10 by 10 board with lake in the middle and new pieces. Inventor: Jörg Knappen.
- Secutor Chess. Introducing the Secutor piece, and new collision-capture, on a Gustavian board (zrf available). By M Winther.
- Secret King. A chess variant with 10 Knights, and a Secret King. (10x10, Cells: 100) By Florin Lupusoru.
- The Secret Invisible Pass Chess. Missing description (10x10, Cells: 100) By Namik Zade.
- Seachess. Chess with a marine war theme. (Cells: 128)
- Scout Chess. Introducing the Scout, combining queen-captures with Camelrider moves (zrf exists). By M Winther.
- Scirocco (original). On ten by ten board with over thirty different pieces. (10x10, Cells: 100) By Adrian King.
- Scirocco. Play this decimal variant with several weak fairy pieces on Jocly. Inventor: Adrian King.
- Scirocco (revised). On ten by ten board with over thirty different pieces. (10x10, Cells: 100) By Adrian King.
- Scirocco (original) . On ten by ten board with over thirty different pieces. By Adrian King.
- Scirocco (revised) . On ten by ten board with over thirty different pieces. By Adrian King.
- Scion . Missing description By Larry L. Smith.
- Scion. Missing description (10x10, Cells: 100) By Larry L. Smith.
- Schoolbook (updated) . Missing description By Sam Trenholme.
- Schoolbook . Zillions file for Schoolbook. By Sam Trenholme.
- Schoolbook. This is a Game Courier preset for Schoolbook Chess. By Sam Trenholme.
- Schoolbook. 8x10 chess with the rook + knight and bishop + knight pieces added. (10x8, Cells: 80) By Sam Trenholme.
- Schizophrenic Chess . Game on 12x7 board with Left and Right Schizzys, Bobbers, Teleporters and other exotic pieces. Inventor: David Short.
- Schizophrenic Chess. Game on 12x7 board with Left and Right Schizzys, Bobbers, Teleporters and other exotic pieces. (12x7, Cells: 84) By David Short.
- Scheherazade. Pieces may combine with other pieces to form combination pieces. (10x10, Cells: 100) By Robert Shimmin.
- Sceptre 1027 A.D.. Large, commercial, multiplayer chess variant. (9x(8x8), Cells: 576)
- Double Chess. Sample Games. By David Short.
- Double Chess. More Sample Games. By David Short.
- Samarcanda . Variant of Mideast Chess with Crooked Bishops. By Nuno Cruz.
- Samarcanda. Variant of Mideast Chess with Crooked Bishops. (10x10, Cells: 100) Inventor: Nuno Cruz.
- Salmon P. Chess. Huge three-dimensional game celebrating 10 years chess variant pages. (10x(), Cells: 7500) By Dale Holmes.
- Saint Pancras Shogi. double-set Sainted Shogi variant with half the pieces starting promoted. (11x12, Cells: 132) By Charles Gilman.
- Sagittar Chess. Introducing the Sagittar, a bifurcation cannon related to the Korean cannon, on an H-board (zrf available). By M Winther.
- Sage Chess. Missing description (8x16, Cells: 128)
- Sac Chess. Game with 60 pieces. (10x10, Cells: 100) By Kevin Pacey.
- Sac Chess. Play classical chess along with classical compound pieces: amazons, chancellors, archbishops... Inventor: Kevin Pacey.
- Ryugi. 10x10 variant with Kirins, Marshalls, and Dragons, the latter which can move as a Bishop or as a Nightrider. By A. M. DeWitt.
- Ryugi. 10x10 variant with Kirins, Marshalls, and Dragons, the latter which can move as a Bishop or as a Nightrider. By A. M. DeWitt.
- Ryu Shogi. Large modern shogi variant. (7x12, Cells: 84) By Jared B. McComb.
- Ryu Shogi . Large modern shogi variant. Inventor: Jared B. McComb.
- The Duke of Rutland's Chess. 14x10 version. Inventor: John Third Duke of Rutland.
- Russian fortress chess. An old Russian variant for four players. (Cells: 192)
- Russian Fortress Chess. Missing description
- Rules for the 84 Spaces Contest. Contest held in 2002.
- Royal Rumble. A 6 board all-out melee with random pieces, royals and starting positions. By Nick Wolff.
- Royal Rumble. A 6 board all-out melee with random pieces, royals and starting positions. By Nick Wolff.
- Royal Lion Chess. Chess with a Royal Lion and many strong pieces. (10x10, Cells: 100) By Michael Nelson.
- Royal Guard Chess . Royal Guards help defend King and all pieces can promote. By Adrian Alvarez de la Campa.
- Royal Fury. A Futuristic Chessery Game - relaxed win rules. Inventor: Vernon Rylands Parton.
- Royal Court. On 8 by 10 board with crowned knights: can move like king or knight. (10x8, Cells: 80) By Sidney LeVasseur.
- Royal Court. Play Royal Court on Game Courier. Inventor: Sidney LeVasseur.
- Royal Chess. Chess on an extended board with Royal Guard pieces added. By William A Curtis.
- Royal Chess. Variant on ten by eight board. (10x8, Cells: 80)
- A Royal and His Pet. Missing description By Zhedric Meneses.
- Round Table Chess. Chess variant on a board with round and square part. (Cells: 92) By Richard G. VanDeventer.
- Rotorblades Fusion Chess . A cross between my own Rotorblades Chess and Fergus Duniho's Assimilation Fusion Chess, with a few extra features. By David Cannon.
- Rotor-blades Chess. Game played on a board that is both circular and trigonal. (Cells: 150) By David Cannon.
- Rotary. Missing description Inventor: Christian Freeling.
- Rotary. On a 9 by 9 board with rotating pieces. (9x9, Cells: 81) By Christian Freeling.
- Rose Chess XII. With Nightriders, (Half-)Roses, Spotted Gryphons and War Machines. (12x12, Cells: 144) By David Paulowich.
- Rose Chess XII. With Nightriders, (Half-)Roses, Spotted Gryphons and War Machines. By David Paulowich.
- Rose Chess. Grand Chess, with Roses instead of Knights. (10x10, Cells: 100) By Abdul-Rahman Sibahi.
- Roman Chess. 10x10 variant available commercially. Inventor: Mark Woodall.
- Roman Chess . Commercial chess variant on 10x10 board with two non-royal kings added. Inventor: Mark Woodall.
- Roman Chess. Commercial chess variant on a 10x10 board with two non-royal kings added. Inventor: Mark Woodall.
- Rococo. Animated piece movement diagrams. By Peter Aronson and David Howe.
- Rococo. A clear, aggressive Ultima variant on a 10x10 ring board (includes mirror array and Push-Pullyu variants). Inventor: Peter Aronson and David Howe.
- Rococo . A clear, aggressive Ultima variant on a 10x10 ring board. Inventor: Peter Aronson and David Howe.
- Rococo. A clear, aggressive Ultima variant on a 10x10 ring board. (10x10, Cells: 100) (Recognized!) Inventor: Peter Aronson and David Howe.
- Rococo Zillions Saved Game . Download this file to see this game played in the Multivariant Play by E-Mail Tournament. Inventor: Peter Aronson and David Howe.
- Rocket Chess. Space-themed fairy chess variant on neoteric board: piece’s movement depends on type of cell where it stands. (Cells: 248) By Lev Grigoriev.
- Ringworld Chess. Themed hex variant differentiating opposite directions along orthogonals. (Cells: 198) By Charles Gilman.
- Riley's Four Army Chess. Several ways to win. Inventor: Patrick Riley.
- Omega Chess Review. Review of commercial Chess variant.
- Retiar Chess. Introducing the Retiar, a bifurcating bounce-slider, on an H-board (zrf available). By M Winther.
- Reservists' doublechess. Each side has 16 non-pawn pieces, split among 10 types. By Andrew L Smith.
- Reroute66. Play this adaptation of Chess to a 66 space board with some overlapping spaces. (10x8, Cells: 66) By Fergus Duniho.
- Reroute66. A simpler game using the same board as Gerd Degens' Chess66. (10x8, Cells: 66) By Fergus Duniho.
- Renniassance Chess . Game played on several sizes of large board with 68 pieces per side. Inventor: Eric V. Greenwood.
- Renniassance Chess. With 68 pieces on board of 12 by 12. (12x10, Cells: 120) By Eric V. Greenwood.
- Renezans Chess. Proprietary game, 9x9, in which the occupant of the center. Inventor: BiTriad.
- Renezan's Chess . Proprietary game, Bi Triad, 1993. Inspired by Wildebeest Chess. Inventor: BiTriad.
- Reldoub. Game with river, relays, walls, and fractions. (11x11, Cells: 121) By (zzo38) A. Black.
- Regimental Chess . Commercial variant. Groups of pieces can form battalions and regiments and move at the same time. (36x16, Cells: 576)
- Reformed Courierspiel. Play this modern version of an historic game on Jocly. Inventor: Clément Begnis.
- Wildebeest Chess - Recognized. Now a Recognized Chess Variant! Inventor: R. Wayne Schmittberger.
- Rebel Fury . Missing description By Larry L. Smith.
- Rebel Fury. A Variation of V.R. Parton's Royal Fury. (12x12, Cells: 144) By Larry L. Smith.
- Raptor Chess . Two pairs of complimentary flying/leaping pieces: the Raptors and the Flying Bombers change the nature of the game. By Charles Daniel.
- Raptor Chess. 104 square large board game with complimentary diagonal and orthogonal flying pieces each with dual mode capture abilities. (10x10, Cells: 104) By Charles Daniel.
- Raptor Chess. Play game in which two pairs of dual mode fliers: the Raptors and the Birds create havoc on the board! By Charles Daniel.
- Rank-behind-Rank Chess. 30 pieces on a side with two Kings each on a 6 by 12 board. (6x12, Cells: 72) By Sergey Sirotkin.
- Rank behind Rank . 30 pieces on a side with two Kings each on a 6 by 12 board. Inventor: Sergey Sirotkin.
- Random-Drop Chess . Missing description By Namik Zade.
- Random Rodent Chess. Variant geneRATing rodent-named pieces marks Year of the Rat. (4x(9x9), Cells: 324) By Charles Gilman.
- Ramayana Chess . Chess variant inspired by the Ramayana epic. Inventor: Luiz Carlos Campos.
- Ramayana Chess. Chess variant inspired by the Ramayana epic. (Cells: 84) By Luiz Carlos Campos.
- Quintessential chess. Large chess variants, with some pieces moving with a sequence of knight moves in a zigzag line. (10x10, Cells: 84) By Jörg Knappen.
- Quintessential Chess . Large chess variant, with some pieces moving with a sequence of Knight moves in a zigzag line. Inventor: Jörg Knappen.
- Quinquereme Chess. Large variant with a new piece, the Quinquereme. Inventor: Jörg Knappen.
- Quinquereme Chess. Large variant with a new piece, the Quinquereme. (12x12, Cells: 144) By Jörg Knappen.
- Quex. Large variant on 10 by 10 board with 11 different pieces. (10x10, Cells: 100) By Stephen Larson.
- Querquisite Chess. The Whimsical Querquisite on the Game Courier. By Abdul-Rahman Sibahi.
- Querquisite Chess. Features the whimsical, irregular Querquisites,. (8x10, Cells: 72) By Abdul-Rahman Sibahi.
- Queens or Castles. Wizards promote by making an opponent's piece [or pawn] and themself vanish from the board. By Gary K. Gifford.
- Queens II. Game with 11 queens and no pawns. (12x10, Cells: 120) By Gerd P. Degens.
- Queenmania. A game with 11 queens and enhanced pawns. (12x12, Cells: 144) By Gerd P. Degens.
- Quark Chess. Missing description By tilera Ley.
- Quantum Chess . Commercial variant with new pieces on 10 by 10 and 12 by 12 boards. (10x10, Cells: 100)
- Quantum Chess . Commercial variant with new pieces on 10 by 10 and 12 by 12 boards.
- Quang Trung Chess, 2nd Edition. On 10 by 10 board with seven mostly new pieces. (10x10, Cells: 100) By Vu Q Vo.
- Quang Trung Chess, 2nd edition . On 10 by 10 board with seven mostly new pieces. By Vu Q Vo.
- Quadruple Besiege Chess. A variant on a "finite but unbounded" board comprising two FIDE boards notionally joined on every edge. (Cells: 128) By Charles Gilman.
- Quadd Shogi. Shogi with 4 squares for each one space in normal Shogi. (18x18, Cells: 324) By (zzo38) A. Black.
- Quadaptation. Use commanders to recruit better pieces. Capture your opponents commander and they lose. By .
- QB Goes East 98 squares. Quadruple Besiege versions of Shogi, Xiang Qi, and offshoots using single sets on 2 7x7 boards. (Cells: 98) By Charles Gilman.
- QB Goes East 162 squares. Quadruple Besiege versions of Shogi, Xiang Qi, and offshoots using double sets on 2 9x9 boards. (Cells: 162) By Charles Gilman.
- Pseudo-Modern Random Chess. Missing description By Jose Carrillo.
- PromoChess. Everything but the king can power up. Mix of Japanese/Western/fairy pieces. (9x9, Cells: 81) By Glenn Overby II.
- PromoChess . Everything but the king can power up. By Glenn Overby II.
- Prime Ministers Random Chess. Missing description By Jose Carrillo.
- Prime Ministers Random Chess. Missing description (9x8, Cells: 72) By Jose Carrillo.
- Prime Ministers Chess. An adaptation of Gabriel Vicente Maura's 1968 Modern Chess. (9x8, Cells: 72) By Jose Carrillo.