Large Chess Variants
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- Mad Chess (Stone=White). Chess variant with unequal armies on 10 by 10 board. Author: Fergus Duniho. Inventor: Jason D. Wittman.
- Magi . Variant on 10 by 10 board with new pieces. By Neal Meyer.
- Magi. On 10 by 10 board with new pieces and different outcome rules. (10x10, Cells: 100) By Neal Meyer.
- Magi - A Chess Variant. Variant on 10 by 10 board with new pieces. (10x10, Cells: 100) By Neal Meyer.
- Magic River. Xiang Qi pieces crossing the Magic River turn into their Western counterparts, and vice versa! (17x9, Cells: 77) By John Smith.
- Maha Chatukanga. Variant arranging Chaturanga's paired pieces and all their compounds in the style of Grand Chess. (10x10, Cells: 100) By Charles Gilman.
- Mainzer Schach. 11 x 8 variant with two Januses and one Marshall, and different setup. Author: Tony Quintanilla. Inventor: Jörg Knappen.
- Mainzer Schach. Large variant with Janus, Marshall, and different setup. (11x8, Cells: 88) By Jörg Knappen.
- Maka Dai Dai Shogi. Pieces promote on capture, some to multi-capturing monsters. (19x19, Cells: 361) Author: H. G. Muller.
- Maka-Dai-Dai Shogi. Historical ultra large Shogi variant. Author: Jean-Louis Cazaux.
- Maka-Dai-Dai Shogi pictures. Photos of a commercial Maka-dai-dai Shogi set. Author: John Lawson.
- Make own Army and Handicap Azsymchess . Missing description By Namik Zade.
- Makromachy. Huge variant with 2x56 pieces, some jumping over many others. (14x14, Cells: 196) By H. G. Muller.
- Mammoth Chess. Large Variant. (10x10, Cells: 96) Author: Fergus Duniho. Inventor: Kevin Begley.
- Manchala Chess. On 10 by 10 board with new pieces. (10x10, Cells: 100)
- MANEVAR a.k.a. Maneuver. Game with infantry, cavalry, and archers and multiple moves per turn. (13x12, Cells: 156) By Bishop Drax.
- Mangonel Chess. Introducing the remarkable Mangonel piece, which can hurl pieces over its head, on a Gustavian board (zrf available). By M Winther.
- Many Worlds Chess. Large variant, inspired by the many worlds interpretation of quantum mechanics. By Adrian King.
- Martian Chess. Large variant from the book The Chessmen of Mars. Author: Ed Friedlander.
- Martian Chess, Jetan. Large variant from the book The Chessmen of Mars. (10x10, Cells: 100) Author: Jean-Louis Cazaux and Hans L. Bodlaender. Inventor: Edgar Rice Burroughs.
- Mastodon Chess. Standard pieces plus two Mastodons per side. A strategical big-board variant. By M Winther.
- Mastodon Chess (8x10). Standard pieces plus two Mastodons per side. A strategical big-board variant. By M Winther.
- Matrix Chess. Chess played on a tessellation of pentagons and diamonds. The name comes from the matrix in which diamonds are found. (14x14, Cells: 196) By David Cannon.
- Matrix Chess . Chess played on a board of tessellating pentagons and diamonds. By David Cannon.
- Medusa Chess. Non-capturing medusas petrify enemy units. Author: Ed Friedlander. Inventor: Vernon Rylands Parton.
- Medusa Chess III. Medusas petrify enemy units they attack and capture as Queens. Author: Ed Friedlander. Inventor: Vernon Rylands Parton.
- Medusa Shogi. Missing description Author: Larry L. Smith. Inventor: Gary K. Gifford.
- Medusa Shogi. Missing description (11x11, Cells: 121) By Gary K. Gifford.
- Mega-Chess. A chess game where each piece is a chess game! (64x(8x8), Cells: 4096) By David Howe.
- Megachess. Played on 6 boards arranged in a 2 by 3 grid. (24x16, Cells: 384) By Fred Lange.
- Megalomachy. A huge game with 2x80 pieces, some able to jump over many others. (16x16, Cells: 256) By H. G. Muller.
- Mêlée. Variant on 9 by 9 board with 9 different pieces and castle square that must be occupied. (9x9, Cells: 81) By C. George Boeree.
- Melee Chess. Large variant, win by entering enemy castle. Author: Ed Friedlander. Inventor: C. George Boeree.
- Memory CardChess for Four. Prior to each turn, turn over a card if it is available. If it is your unit, it is activated, otherwise, remember where it was. Author: Ed Friedlander.
- Memory CardChess for Teams. Prior to each turn, turn over a card if it is available. If it is your unit, it is activated, otherwise, remembers where it was.
- Memory CardChess for Three. Prior to each turn, turn over a card if it is available. If it is your unit, it is activated, otherwise, remember where is was. Author: Ed Friedlander.
- Memory CardChess for Two. Like regular CardChess, but cards are flipped face down when not moving. Author: Ed Friedlander.
- Meridian Chess. Introducing the Meridian, bishop-capture combined with bifurcated bounce-move, on an H-board (zrf available). By M Winther.
- Metamachy. Play this large variant with a variety of fairy pieces on Jocly. Author: Jean-Louis Cazaux and Michel Gutierrez. Inventor: Jean-Louis Cazaux.
- Metamachy. Large game with a variety of regular fairy pieces. Author: H. G. Muller and Jean-Louis Cazaux. Inventor: Jean-Louis Cazaux.
- Metamachy . Zillions of Games file for Metamachy. (12x12, Cells: 144) By Jean-Louis Cazaux.
- Metamachy. Play this large game with a variety of regular fairy pieces. Author: Fergus Duniho. Inventor: Jean-Louis Cazaux.
- Mexican Chess. Large variant from Mexico with 3,1 jumpers. Author: Ed Friedlander. Inventor: PrinceJoli Kansil.
- Microorganism Chess. A 16x16 board with pieces that behave like micro-organisms. (16x16, Cells: 256) By Mark Hedden.
- Mideast chess. Variant on 10 by 10 board, inspired by ancient Tamerlane chess. (10x10, Cells: 100) Author: Hans L. Bodlaender. Inventor: John Mantle Green.
- Mideast Chess . Variant on 10 by 10 board, inspired by ancient Tamerlane chess. Author: Marek14 . Inventor: John Mantle Green.
- Mideastern Chess. Actually a California variant resembling "Tamurlane" chess. Author: Ed Friedlander. Inventor: John Mantle Green.
- Millennial Chess. Variant on 12 by 12 board with new pieces. (12x12, Cells: 144) By John William Brown.
- Millennium Chess . Commercial variant on 15 by 8 board with almost twice the normal set of pieces.
- Millennium Chu Shogi . http://pika.cs.nctu.edu.tw/lit/MillenniumShogi.zip. By Yu Ren Dong.
- Mimic Chess. Chess on a larger board with 3 new pieces with constantly changing movement capabilities. By Nick Wolff.
- Mimotaur Chess. Mimotaurs move as queens, may only capture a unit. Author: Ed Friedlander. Inventor: Vernon Rylands Parton.
- Mini Citadel Chess. Mate the king or occupy a citadel of your opponent. (8x8, Cells: 68) By A.J. Winkelspecht.
- Mini Citadel Chess . Mate the king or occupy a citadel of your opponent. By A.J. Winkelspecht.
- Minigolf Chess on a Really Big Board. Pieces have momentum, bounce against the walls, and can be spinned in variant on 8 by 16 board. (16x8, Cells: 128) By Ralph Betza.
- Ministers Chess. Two queens on each side on a 9x9 board, available commercially. Author: Ed Friedlander.
- Minjiku Shogi. Wild shogi variant, with pieces that burn neighbors or jump many pieces. (10x10, Cells: 104) By H. G. Muller.
- Missing Ox Chess. 4 distinguishable FIDE sets represent pieces starting with 24 different letters. (16x16, Cells: 256) By Charles Gilman.
- MiTaWi. A variant combining elements on Mitregi, Taijitu Qi, and Wildeurasian Qi. (14x12, Cells: 64) By Charles Gilman.
- Mitosis Chess. Each captured major piece in this game returns to the board as the two or three pieces it originally consisted of. (9x9, Cells: 81) By Alex Malphrus.
- Mitred Framing 1: 8x8 to 10x10. Adding a rim of forward-only pieces around a FIDE-size board. (10x10, Cells: 100) By Charles Gilman.
- Mitred Framing 2: 9 files to 10x10. Puts most pieces of 9-file variants on FIDE board and adds extra rim including middle-file piece and Shogi-style extras. (10x10, Cells: 100) By Charles Gilman.
- Mitregi with compounds of duals. An extra border around the Gnuqi and Wildebishogi array houses forward-only counterparts. (11x11, Cells: 121) By Charles Gilman.
- Mitsugumi Shogi. Smaller variant of Suzumu Shogi on a 13x13 board. (13x13, Cells: 169) By A. M. DeWitt.
- Mitsugumi Shogi. Smaller variant of Suzumu Shogi on a 13x13 board. (13x13, Cells: 169) By A. M. DeWitt.
- Mob Strategy. Mob Strategy, The Takeover Game, presented by The Game Pile. By Jeff Rients.
- Modern Capablanca Random Chess. Missing description By Jose Carrillo.
- Modern Carrera's Chess. Play this modern version of Carrera's Chess on Game Courier. Author: Fergus Duniho. Inventor: Fergus Duniho and Sam Trenholme.
- Modern Carrera's Chess. Play Modern Carrera's Chess with Jocly. Author: Fergus Duniho and The Jocly Team. Inventor: Fergus Duniho and Sam Trenholme.
- Modern Chess. Play on Game Courier. Author: Jose Carrillo. Inventor: Gabriel Vicente Maura.
- Modern Chess. Variant on a 9 by 9 board with piece that combines bishop and knight moves. (9x9, Cells: 81) Author: Hans L. Bodlaender. Inventor: Gabriel Vicente Maura.
- Modern Chess. Play this 9x9 variant with one extra piece on Jocly. Author: Michel Gutierrez and Jean-Louis Cazaux. Inventor: Gabriel Vicente Maura.
- Modern Chess . A variant on a 9 by 9 board. Author: Marek14 . Inventor: Gabriel Vicente Maura.
- Modern Chess. Latin American 9x9 version. Author: Ed Friedlander. Inventor: Gabriel Vicente Maura.
- Modern chess puzzle. Mate in one with piece of combined bishop/knight move from Modern Chess. Author: Hans L. Bodlaender. Inventor: Gabriel Vicente Maura.
- Modern Chess set. Photo of chess variant with 9 by 9 board. Author: Jean-Louis Cazaux and John Lawson. Inventor: Gabriel Vicente Maura.
- Modern Courier Chess . An attempt to reform the courier game by emulating the development of modern chess. By Paul Byway.
- Modern Courier Chess. Missing description Author: Abdul-Rahman Sibahi. Inventor: Paul Byway.
- Modern Courier Chess. An article from Variant Chess discussing the game. (12x8, Cells: 96) Author: Paul Byway.
- Modern Courier Chess. Sample Game with analysis, from Variant Chess. Author: Paul Byway.
- Modern English Random Chess. Missing description (10x10, Cells: 100) By Jose Carrillo.
- Modern Kamil. Game Courier preset for Modern Kamil, a game from Nuno Cruz with Camels. (10x10, Cells: 100) Author: Jean-Louis Cazaux.
- Modern Kamil . A set of variants adding Camels or Camel-like pieces to the Orthochess array. Author: Peter Aronson. Inventor: Nuno Cruz.
- Modern Kamil. Two variants that add the Camel to the standard Orthochess array on enlarged boards. (10x10, Cells: 100) By Nuno Cruz.
- Modern Makruk. A fusion of Modern Chess and Makruk. By John Smith.
- Modern Minister's Courier Chess. Missing description (11x8, Cells: 88) By Jose Carrillo.
- Modern Prime Ministers Random Chess. Missing description (9x8, Cells: 72) By Jose Carrillo.
- Modern Prime-Ministers Chess. Missing description (9x8, Cells: 72) By Jose Carrillo.
- Modern Random Chess. Missing description By Jose Carrillo.
- Modern Random Chess. Missing description (9x9, Cells: 81) By Jose Carrillo.
- Monadchess. 10 x 10 setup with Capablanca-esque pieces and cannons and extra pawns and pieces designed to make flanks safer. By Namik Zade.
- MonadChess. Missing description (10x10, Cells: 100) By Namik Zade.
- Monadchess . Missing description By Namik Zade.
- Monadchess II. Setup a little different from Monadchess... By Namik Zade.
- Monaddropchess . Missing description By Namik Zade.
- MonadDropII (Mats Winther Method) . Missing description By Namik Zade.
- MonadrandomChess . Missing description By Namik Zade.
- Monster Bluff Chess. On 10 boards put together, with putting stakes on squares. (32x24, Cells: 640) By Dale Holmes.
- Monster Mash. Armies consist of classic monsters and scary creatures. (13x13, Cells: 169) By Bob Greenwade.
- MoQi. MoQi, or Demon Game, is played upon a 10x10 field. By Larry L. Smith.
- Mortal Shogi. A Shogi variant in which pieces aren't all immortal. (9x9, Cells: 81) Author: Fergus Duniho. Inventor: Roberto Lavieri and Fergus Duniho.
- Mortal Shogi. Play this Shogi variant in which pieces may die. Author: Fergus Duniho. Inventor: Roberto Lavieri and Fergus Duniho.
- Mortar Chess. Introducing another piece named Mortar, a form of cannon, on an H-shaped board. Positionally advanced. With zrf. By M Winther.
- Mosaic Chess. Large variant combining pieces from various other games. By Daniel Zacharias.
- Mountain King Chess. First king to reach the center square of an 11 x 11 board wins. Author: Ed Friedlander. Inventor: Emmor Ray Sperry.
- Murmillo Chess. Introducing the Murmillo piece, and new collision-capture, on a Gustavian board (zrf available). By M Winther.
- Mustang . Missing description By Namik Zade.
- Mysore Chess. Large variant by an 18th century Indian king. Author: Ed Friedlander.
- Mythical Fantasy Conquest. Play this large variant with new fantasy pieces! Author: Lim Ther Peng and Tony Quintanilla. Inventor: Lim Ther Peng.
- Mythical Fantasy Conquest. A large variant with new fantasy pieces. (10x10, Cells: 100) By Lim Ther Peng.
- N by N chess games. Mathematician Missoum has a chess variant on an N by N board for many numbers N.
- Nahbi Chess. Preset for Nahbi Chess. By Uri Bruck.
- Nahbi Chess. Variant on 10 by 10 board with equator, Nahbi's and Archers. (10x10, Cells: 100) By Uri Bruck.
- Nahbi Chess . Variant on 10 by 10 board with equator, Nahbi's and Archers. Author: David Howe and Uri Bruck. Inventor: Uri Bruck.
- Naiad Chess.. Introducing the Naiad, which moves like a queen but cannot capture. Instead it can kidnap pieces by magnetism (zrf available). By M Winther.
- Napoleonic Chess. Large chess variant with the `spirit of the Armies of the Napoleonic period'. (14x14, Cells: 196) By Tom Hartley.
- Napoleonic Chess. Large chess variant with the `spirit of the Armies of the Napoleonic period'. Author: John Smith. Inventor: Tom Hartley.
- Nearlydouble Chess. A 2d variant with the whole of two identical sets minus the second King. (11x11, Cells: 121) By Charles Gilman.
- Nearlydouble Hex Chess. Applying the Nearlydouble principle to Wellisch and McCooey Chess. (15x15, Cells: 169) By Charles Gilman.
- Nearlydouble Wildebeest. A variant with the whole of two identical Wildebeest sets minus the second King. (15x14, Cells: 210) By Charles Gilman.
- Nested Chess. A variant hiding another on its diagonals. (15x15, Cells: 141) By Charles Gilman.
- Nested Shogi. A variant hiding Shogi on its diagonals. (17x17, Cells: 177) By Charles Gilman.
- Nested Xiang Qi. A variant hiding Xiang Qi on its diagonals. (18x18, Cells: 196) By Charles Gilman.
- Never-Ending Infinite Sandbox Chess Game. Online forum-based chess game with 12 players, infinite board, and many pieces. By dead dead.
- New Chancellor Chess Variants. On 8 by 10 board with two `chancellors'. (10x8, Cells: 80) By David Paulowich.
- New York Twins Chess I. Large board with two kings. Checkmate either one. Author: Ed Friedlander.
- New York Twins Chess II. Large board with two kings. Capture one, then checkmate the other. Author: Ed Friedlander.
- New-Chess. Variant on 10 by 10 board with combination pieces. (10x10, Cells: 100) Author: John Ayer and Hans L. Bodlaender. Inventor: Stephen G. Sava.
- Nine square Chess. With additional `Joker' piece on nine by nine board. (9x9, Cells: 81) Author: Hans L. Bodlaender. Inventor: John Mantle Green.
- Nine Square Chess . With additional `Joker' piece on nine by nine board. Author: Marek14 . Inventor: John Mantle Green.
- Noli Me Tangere Chess. Missing description (10x10, Cells: 100) By Patrik Hedman.
- Non-Random CardChess for Four. Cardchess with predetermined locations for card pieces. Author: Ed Friedlander.
- Non-Random CardChess for Teams. Cardchess with predetermined locations for card pieces. Author: Ed Friedlander.
- Non-Random CardChess for Three. Cardchess with predetermined locations for card pieces. Author: Ed Friedlander.
- Non-Random CardChess for Two. Cardchess with predetermined locations for card pieces. Author: Ed Friedlander.
- Not-particularly-new Chess . A fairly restrainted variant on a 9x8 board, with Cardinals, Unicorns and Jesters. By Peter Aronson.
- Not-Particularly-New Chess. A fairly restrainted variant on a 9x8 board, with Cardinals, Unicorns and Jesters. (9x8, Cells: 72) By Peter Aronson.
- Notchess. A family of games with Chess and Chess-Variant pieces but no King. () By Charles Gilman.
- Novo Chess. War game chess variant from the Netherlands, 1937. (12x8, Cells: 96) Author: Hans L. Bodlaender. Inventor: L. J. Weijden.
- Numeral Chess. Numeral Chess requires sharp eyes and promotes deep strategical calculation similar to Go (WeiQi). (17x17, Cells: 289) By Eric Truong.
- Nutty Shogi. Smaller version of Tenjiku Shogi on a 13x13 board. Author: A. M. DeWitt. Inventor: H. G. Muller.
- Nutty Shogi. Pieces jump over many others, and a Fire Demon burns neighbors. (13x13, Cells: 169) By H. G. Muller.
- Obento Chess. 12x12 Chess variant with Shogi-style promotions and bent sliding pieces. (12x12, Cells: 144) Author: Jean-Louis Cazaux. Inventor: Eric Silverman and Jean-Louis Cazaux.
- Octa-Ashtapada. 8x8x8 variant with powerful armies and the potential for multiple royal pieces per side. By Larry L. Smith.
- Octogonal Chess. Carrera Chess on an octogon-shaped board. (10x10, Cells: 76) By John Smith.
- Octopus Chess. Features the crooked slider: the Octopus and the dual path Sorcerer Snake. (10x10, Cells: 100) By Charles Daniel.
- Octopus Chess. Featuring the Sorcerer Snake, the Ninja Pawn, the Wazir Knight, the Ferz Knight and the Octopus. By Charles Daniel.
- Octopus Chess . Featuring the Octopus, the Sorcerer Snake, the Ferz Knight, the Wazir Knight and the Ninja Pawns. By Charles Daniel.
- Odin's Rune Chess. A game inspired by Carl Jung's concept of synchronicity, runes, and Nordic Mythology. (10x10, Cells: 100) By Gary K. Gifford.
- Odin's Rune Chess . Missing description Author: Michael Nelson. Inventor: Gary K. Gifford.
- Odin's Rune Chess. With pieces that were inspired by rune images and meanings.... By Gary K. Gifford.
- Olden-RoyalChess. A 12x12 game with many compounds plus new pawn types. By Mariano Moran.
- Omega chess . Commercial chess variant on board with 104 squares. Author: David Howe.
- Omega Chess. Rules for commercial chess variant on board with 104 squares. (12x12, Cells: 104) (Recognized!)
- Omega Chess. Commercial chess variant on board with 104 squares. Author: Ed Friedlander.
- Omega Chess. This preset for Omega Chess enforces the rules and spots check, checkmate, and stalemate. Author: Fergus Duniho.
- Omega Chess. Commercial chess variant on board with 104 squares. Author: Hans L. Bodlaender.
- Omega Chess. Players have many pieces that can only move in the direction they point at. (9x9, Cells: 81) Author: Carlos Cetina. Inventor: Gabriel Vicente Maura.
- Omega Chess. A review. Author: Ben Good.
- Omega Chess Extended . Missing description By Mykola Dolgalov.
- Omega Chess game. Moves of a game between chess grandmasters Alex Sherzer and Judith Polgar.
- Omega Chess Review. Review of commercial Chess variant set. Author: David Howe.
- Omega Chess Review. Review of commercial Chess variant. Author: Alex Sherzer.
- Omega Chess set Photos. Missing description Author: Hans L. Bodlaender.
- Omega Transplant . The Warmachine Alfil , the Camel Ferz, the Ninja Pawns and the usual suspects battle it out on a new chessboard. By Charles Daniel.
- Omega Transplant. The Champion and Wizard from Omega Chess are transplanted to the board system and rules used for Birds and Ninjas. By Charles Daniel.
- Omnichess. Omnichess - Create and play chess variants. 2-8 players. Square, Hexagonal, Triangular board types. By ch1gz .
- Once More, with Deans. Subvariants of River-with-university-and-cathedral series with extra piece type. By Charles Gilman.
- Onslaught. Several pieces can capture only on the enemy half, favoring attack. (12x12, Cells: 144) By H. G. Muller.
- Open Chess . Large variant with few pawns. Author: Marek14 . Inventor: Moses Snell-Feikema.
- Open Chess. Large variant with few pawns. (12x12, Cells: 144) By Moses Snell-Feikema.
- Open King 5*4DChess. Four dimensional game with 74 pieces. (5x(5x(5x5)), Cells: 625) By Kevin Pacey.
- Operational Chess. Wargame inspired variant played on a wide board. By Andy Thomas.
- Operational Chess 2. Large, wargame inspired variant with ranged pieces. By Andy Thomas.
- Operational Chess 2. Large, wargame inspired variant with ranged pieces. (17x11, Cells: 187) By Andy Thomas.
- Opulent Chess . Zillions file for Opulent Chess. By Greg Strong.
- Opulent Chess. A derivative of Grand Chess with additional jumping pieces (Lion and Wizard). (10x10, Cells: 100) By Greg Strong.
- Opulent Lemurian Shatranj. Joe Joyce's Shaman and Hero pieces are on a large board. By David Paulowich.
- Opulent Lemurian Shatranj. Joe Joyce's Shaman and Hero pieces are now on a larger board. (10x10, Cells: 100) By David Paulowich.
- Orwell Chess. Three player variant themed on George Orwell's 1984. (7x12, Cells: 84) By Glenn Overby II.
- Orwell Chess . Three player variant themed on George Orwell's 1984. By Glenn Overby II.
- Outback Chess . New pieces on plus-shaped board. Author: Peter Aronson. Inventor: Timothy R. Newton.
- Outback Chess. Play this game with new pieces on plus-shaped board. Winner of the 84-square contest! Author: Tony Quintanilla and Timothy R. Newton. Inventor: Timothy R. Newton.
- Outback Chess. New pieces on plus-shaped board. (10x10, Cells: 84) By Timothy R. Newton.
- Outrigger Chess. On 10 by 8 board, with several variants. (10x8, Cells: 80) By Ralph Betza.
- Overkill Ecumenical Chess. Compounds of 2, 3, and all 4 Wildebeest Chess elements. (9x10, Cells: 90) By Charles Gilman.
- Overyang. Variant using compounds of Yang Qi pieces. (11x13, Cells: 143) By Charles Gilman.
- Oxybeles Chess. Introducing the exceptional Oxybeles piece, which can hurl pieces over its head, on a Gustavian board (zrf available). By M Winther.
- Pacific Chess. Variant on ten by ten board. (10x10, Cells: 100) Author: Hans L. Bodlaender.
- Pacific Chess . Variant on ten by ten board. Author: Marek14 .
- Palace Shogi. A complicated hybrid of Shogi, Xiang Qi, and Chess. By Silvia Hollinshead.
- Panchimera. 33 pieces a side, includes all the knight augmented pieces. By Graeme C Neatham.
- Panchimera. all the king's horses - a variant that doubles the number of each FIDE piece and then adds the knight augmented pieces. (11x12, Cells: 132) By Graeme C Neatham.
- Pandemonium. Capablanca chess + Crazyhouse. By Daphne Snowmoon.
- Panoply. A large hexagonal game with unusual pieces. By Daniel Zacharias.
- Parallel Chess War. Play 4 chess games at once, first game won wins the whole war. (4x(8x8), Cells: 256) By Kevin Pacey.
- Parallel Chess War. Play 4 chess games at once, first game won wins the whole war. (4x(8x8), Cells: 256) By Kevin Pacey.
- Passed Pawns Chess. A Decimal Falcon Chess Variant. (10x10, Cells: 100) By George William Duke.
- Passed Pawns, Scorpions and Dragon. More Falcon Chess Variants. By George William Duke.
- Patchanka. This is the Game Courier preset for Patchanka, a variant with several bi-compound pieces. (10x10, Cells: 100) By Jean-Louis Cazaux.
- Patchanka. Decimal variant with several bi-compound pieces. (10x10, Cells: 100) By Jean-Louis Cazaux.
- The Pattern Game . Missing description By Larry L. Smith.
- The Pattern Game. Missing description (12x12, Cells: 144) By Larry L. Smith.
- Paulovits's Game. Istv. By Abdul-Rahman Sibahi.
- Paulovits's Game. Paulovits's chess variant, c. 1890, featuring leaping pieces Pasha and General (with zrf). By M Winther.
- Pawnier Chess. Missing description (11x9, Cells: 99) By Patrik Hedman.
- Pegniar Chess. Introducing the Pegniar, a very interesting bifurcating bounce-slider, on a Gustavian board (zrf available). By M Winther.
- Pemba. Extension of Shako, with 60 pieces. By Jean-Louis Cazaux.
- Pemba. Game Courier Preset to play Pemba, 60 pieces on the decimal board. By Jean-Louis Cazaux.
- Pent-Ashtapada. A hybrid of Maack's Raumschach and Kogbetliantz' 8x8x8 game. By Larry L. Smith.
- Penta War. Huge game with five clans. (17x17, Cells: 319) By Joost Aan de Brugh.
- Penta War . Huge game with five clans. By Joost Aan de Brugh.
- Perfect 12 . 36 pieces per player on 12 by 12 board. By Jean-Louis Cazaux.
- Perfect 12. 12 different kinds of pieces on a 12 x 12 board: Is 12 "more perfect" than 10? Author: Jeremy Gabriel Good. Inventor: Jean-Louis Cazaux.
- Perfect 12. 36 pieces per player on 12 by 12 board. (12x12, Cells: 144) By Jean-Louis Cazaux.
- Persian Chess. Persian Chess. (9x9, Cells: 85) By Anooshiravan Ahmadi.
- Phi Chess. Large variant variant inspired by the golden ratio, Phi. (13x8, Cells: 104) By Joshua Morris.
- Phi Chess with Different Armies. Missing description (13x8, Cells: 104) By Joshua Morris.
- Photos of a Gala Set.. Missing description Author: Hans L. Bodlaender.
- Photos of Omega Chess. Missing description Author: Hans L. Bodlaender.
- Pick the Piece Big Chess. Players can choose to play with Gryphon, anti-Gryphon, SuperCannon, Flying Bomber, Ninja Pawns and many other diverse pieces. By Charles Daniel.
- Pick the Piece Big Chess . Massive collection of games featuring dual path Sorcerer Snake; crooked slider: Octopus and much more. By Charles Daniel.
- Pick the Piece Big Chess. In this customizable game, players decide on the pieces to fill two empty slots and those to be dropped during play. (10x10, Cells: 100) By Charles Daniel.
- Pick-the-Team chess . Make up a list of pieces and choose your pieces from your and your opponents list. Author: David Howe. Inventor: Hans L. Bodlaender.
- Pick-the-team chess. Make up a list of pieces and choose your pieces from your and your opponents list. (10x10, Cells: 100) By Hans L. Bodlaender.
- Piece Promotion Games. Two decimal variants: 'Shatranj Elephants' and 'Chaturanga'. By Christine Bagley-Jones.
- Piece Promotion Games 2 . Missing description By Christine Bagley-Jones.
- Pillage. Featuring the Super Pawn: a powerful short-range piece with promotional capabilities. By Charles Daniel.
- Pillage . Featuring the unique Super Pawn: a powerful short-range piece with promotional capabilities. By Charles Daniel.
- Pillage. Features the powerful jumping Super Pawns as well as a twin set of Vaos and Cannons. (10x10, Cells: 100) By Charles Daniel.
- Pillars of Medusa. A variation of Turkish Great Chess plus two additional pieces, the Morph and the Medusa. (11x11, Cells: 121) By Gary K. Gifford.
- Pillars of Medusa . Download Pillars of Medusa for Zillions of Games! Author: Jason Jakupca. Inventor: Gary K. Gifford.
- Pillars of Medusa. Play this variation of Turkish Great Chess with two additional pieces, the Morph and the Medusa, on Game Courier . Author: Tony Quintanilla and Gary K. Gifford. Inventor: Gary K. Gifford.
- Pinwheel Chess . Four-player, all-against-all variant played on a pinwheel-shaped board. By C. George Boeree.
- The Pit . 10 by 10 board has pit in the middle that can be crossed by Sorcerer piece. By Daniel Roth.
- The Pit. 10 by 10 board has pit in the middle that can be crossed by Sorcerer piece. (10x10, Cells: 84) By Daniel Roth.
- Ploy . Strategic Game of Maneuver and Capture, 3M Company - 1970. Author: Jean-Louis Cazaux.
- Ploy. Strategic Game of Maneuver and Capture, 3M Company - 1970. (9x9, Cells: 81) Author: Dennis Matheson.
- Poems on Falcon Chess: Chess Morality IX: Sacrifice. Missing description By George William Duke.
- Poems on Falcon chess: Chess Morality VII: Moving Pieces. Missing description Author: George William Duke.
- Poems on Falcon Chess: Chess Morality X: Seven Wonders. Missing description By George William Duke.
- Poems on Falcon Chess: Chess Morality XI: Pleiadic Dialogue. Missing description Author: George William Duke.
- Politically Correct Chess. Missing description By Larry L. Smith.
- Politically Correct Chess. Missing description (10x10, Cells: 100) By Larry L. Smith.
- Polyhedron Chess . Large 3-D variant inspired by Tetrahedral Chess. By Larry L. Smith.
- Polyhedron Chess. Large 3-D variant inspired by Tetrahedral Chess. (5x(), Cells: 300) By Larry L. Smith.
- Powerchess. Variant on 10 by 10 board with additional queen and combination piece per player. (10x10, Cells: 100) Author: John Ayer.
- Pre-Grandchess. Variant on ten by ten board inspired by Freeling's Grandchess. (10x10, Cells: 100) By Eric V. Greenwood.
- Presiding Chess. Decimal variant with added leaping pieces. By Tucker Kao.
- Prime Ministers Chess. An adaptation of Gabriel Vicente Maura's 1968 Modern Chess. (9x8, Cells: 72) By Jose Carrillo.
- Prime Ministers Random Chess. Missing description By Jose Carrillo.
- Prime Ministers Random Chess. Missing description (9x8, Cells: 72) By Jose Carrillo.
- Prime-Ministers Chess. Missing description By Jose Carrillo.
- Prisoner's Dilemma. Checkmate the King and rescue the Prisoner to win. (Cells: 84) By Steve Costa.
- PromoChess . Everything but the king can power up. By Glenn Overby II.
- PromoChess. Everything but the king can power up. Mix of Japanese/Western/fairy pieces. (9x9, Cells: 81) By Glenn Overby II.
- Pseudo-Modern Random Chess. Missing description By Jose Carrillo.
- 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.
- 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.
- Quadaptation. Use commanders to recruit better pieces. Capture your opponents commander and they lose. By realityreaper989.
- Quadd Shogi. Shogi with 4 squares for each one space in normal Shogi. (18x18, Cells: 324) By (zzo38) A. Black.
- 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.
- Quang Trung Chess, 2nd edition . On 10 by 10 board with seven mostly new pieces. By Vu Q Vo.
- Quang Trung Chess, 2nd Edition. On 10 by 10 board with seven mostly new pieces. (10x10, Cells: 100) By Vu Q Vo.
- 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. Author: Robert Price.
- Quark Chess. Missing description By tilera Ley.
- Queenmania. A game with 11 queens and enhanced pawns. (12x12, Cells: 144) By Gerd P. Degens.
- Queens II. Game with 11 queens and no pawns. (12x10, Cells: 120) By Gerd P. Degens.
- Queens or Castles. Wizards promote by making an opponent's piece [or pawn] and themself vanish from the board. By Gary K. Gifford.
- Querquisite Chess. Features the whimsical, irregular Querquisites,. (8x10, Cells: 72) By Abdul-Rahman Sibahi.
- Querquisite Chess. The Whimsical Querquisite on the Game Courier. By Abdul-Rahman Sibahi.
- Quex. Large variant on 10 by 10 board with 11 different pieces. (10x10, Cells: 100) By Stephen Larson.
- Quinquereme Chess. Large variant with a new piece, the Quinquereme. Author: Tony Quintanilla. Inventor: Jörg Knappen.
- Quinquereme Chess. Large variant with a new piece, the Quinquereme. (12x12, Cells: 144) By Jörg Knappen.
- 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. Author: Peter Aronson. Inventor: Jörg Knappen.
- Ramayana Chess. Chess variant inspired by the Ramayana epic. (Cells: 84) By Luiz Carlos Campos.
- Ramayana Chess . Chess variant inspired by the Ramayana epic. Author: Peter Aronson. Inventor: Luiz Carlos Campos.
- Random Rodent Chess. Variant geneRATing rodent-named pieces marks Year of the Rat. (4x(9x9), Cells: 324) By Charles Gilman.
- Random-Drop Chess . Missing description By Namik Zade.
- Rank behind Rank . 30 pieces on a side with two Kings each on a 6 by 12 board. Author: Peter Aronson. Inventor: Sergey Sirotkin.
- 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.
- 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.
- Raptor Chess . Two pairs of complimentary flying/leaping pieces: the Raptors and the Flying Bombers change the nature of the game. By Charles Daniel.
- Rebel Fury. A Variation of V.R. Parton's Royal Fury. (12x12, Cells: 144) By Larry L. Smith.
- Rebel Fury . Missing description By Larry L. Smith.
- Reformed Courierspiel. Play this modern version of an historic game on Jocly. Author: Michel Gutierrez and Jérôme Choain. Inventor: Clément Begnis.
- Regimental Chess . Commercial variant. Groups of pieces can form battalions and regiments and move at the same time. (36x16, Cells: 576)
- Reldoub. Game with river, relays, walls, and fractions. (11x11, Cells: 121) By (zzo38) A. Black.
- Renezan's Chess . Proprietary game, Bi Triad, 1993. Inspired by Wildebeest Chess. Author: Yu Ren Dong. Inventor: BiTriad.
- Renezans Chess. Proprietary game, 9x9, in which the occupant of the center. Author: Ed Friedlander. Inventor: BiTriad.
- Renniassance Chess . Game played on several sizes of large board with 68 pieces per side. Author: Edward Holzman. Inventor: Eric V. Greenwood.
- Renniassance Chess. With 68 pieces on board of 12 by 12. (12x10, Cells: 120) By Eric V. Greenwood.
- Reroute66. A simpler game using the same board as Gerd Degens' Chess66. (10x8, Cells: 66) By Fergus Duniho.
- Reroute66. Play this adaptation of Chess to a 66 space board with some overlapping spaces. (10x8, Cells: 66) By Fergus Duniho.
- Reservists' doublechess. Each side has 16 non-pawn pieces, split among 10 types. By Andrew L Smith.
- Retiar Chess. Introducing the Retiar, a bifurcating bounce-slider, on an H-board (zrf available). By M Winther.
- Review: Omega Chess. Review of commercial Chess variant set. Author: Ben Good.
- Review: Omega Chess. Review of commercial Chess variant set. Author: David Howe.
- Review: Omega Chess. Review of commercial Chess variant. Author: Alex Sherzer.
- Riley's Four Army Chess. Several ways to win. Author: Ed Friedlander. Inventor: Patrick Riley.
- Ringworld Chess. Themed hex variant differentiating opposite directions along orthogonals. (Cells: 198) By Charles Gilman.
- 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.
- Rococo . A clear, aggressive Ultima variant on a 10x10 ring board. Author: Peter Aronson. Inventor: Peter Aronson and David Howe.
- Rococo. A clear, aggressive Ultima variant on a 10x10 ring board (includes mirror array and Push-Pullyu variants). Author: Peter Aronson and Antoine Fourrière. Inventor: Peter Aronson and David Howe.
- Rococo. A clear, aggressive Ultima variant on a 10x10 ring board. (10x10, Cells: 100) (Recognized!) Author: Peter Aronson. Inventor: Peter Aronson and David Howe.
- Rococo. Animated piece movement diagrams. By 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. Author: Peter Aronson and John Lawson. Inventor: Peter Aronson and David Howe.
- Roman Chess. 10x10 variant available commercially. Author: Ed Friedlander. Inventor: Mark Woodall.
- Roman Chess. Commercial chess variant on a 10x10 board with two non-royal kings added. Author: Greg Strong. Inventor: Mark Woodall.
- Roman Chess . Commercial chess variant on 10x10 board with two non-royal kings added. Author: Fergus Duniho. Inventor: Mark Woodall.
- Rose Chess. Grand Chess, with Roses instead of Knights. (10x10, Cells: 100) By Abdul-Rahman Sibahi.
- Rose Chess XII. With Nightriders, (Half-)Roses, Spotted Gryphons and War Machines. By David Paulowich.
- Rose Chess XII. With Nightriders, (Half-)Roses, Spotted Gryphons and War Machines. (12x12, Cells: 144) By David Paulowich.
- Rotary. On a 9 by 9 board with rotating pieces. (9x9, Cells: 81) By Christian Freeling.
- Rotary. Missing description Author: Ed Friedlander. Inventor: Christian Freeling.
- Rotor-blades Chess. Game played on a board that is both circular and trigonal. (Cells: 150) By David Cannon.
- 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.
- Round Table Chess. Chess variant on a board with round and square part. (Cells: 92) By Richard G. VanDeventer.
- A Royal and His Pet. Missing description By Zhedric Meneses.
- 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) Author: Hans L. Bodlaender.
- Royal Court. Play Royal Court on Game Courier. Author: Greg Strong. Inventor: Sidney LeVasseur.
- Royal Court. On 8 by 10 board with crowned knights: can move like king or knight. (10x8, Cells: 80) By Sidney LeVasseur.
- Royal Fury. A Futuristic Chessery Game - relaxed win rules. Author: Larry L. Smith. Inventor: Vernon Rylands Parton.
- Royal Guard Chess . Royal Guards help defend King and all pieces can promote. By Adrian Alvarez de la Campa.
- Royal Lion Chess. Chess with a Royal Lion and many strong pieces. (10x10, Cells: 100) By Michael Nelson.
- 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.
- Rules for the 84 Spaces Contest. Contest held in 2002. Author: Hans L. Bodlaender and Fergus Duniho.
- Russian fortress chess. An old Russian variant for four players. (Cells: 192) Author: Hans L. Bodlaender.
- Russian Fortress Chess. Missing description Author: Ed Friedlander.
- Ryu Shogi . Large modern shogi variant. Author: Peter Aronson. Inventor: Jared B. McComb.
- Ryu Shogi. Large modern shogi variant. (7x12, Cells: 84) By Jared B. McComb.
- 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.
- 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... Author: Carlos Cetina. Inventor: Kevin Pacey.
- Sage Chess. Missing description (8x16, Cells: 128) Author: Andrew Wong.
- Sagittar Chess. Introducing the Sagittar, a bifurcation cannon related to the Korean cannon, on an H-board (zrf available). By M Winther.
- Saint Pancras Shogi. double-set Sainted Shogi variant with half the pieces starting promoted. (11x12, Cells: 132) By Charles Gilman.
- Salmon P. Chess. Huge three-dimensional game celebrating 10 years chess variant pages. (10x(), Cells: 7500) By Dale Holmes.
- Samarcanda . Variant of Mideast Chess with Crooked Bishops. By Nuno Cruz.
- Samarcanda. Variant of Mideast Chess with Crooked Bishops. (10x10, Cells: 100) Author: Nuno Cruz and Peter Aronson. Inventor: Nuno Cruz.
- Sceptre 1027. Photo's of a set of this commercial multiplayer chess variant of the 1980's. Author: Simon Westenra.
- Sceptre 1027 A.D.. Large, commercial, multiplayer chess variant. (9x(8x8), Cells: 576) Author: David Howe.
- Scheherazade. Pieces may combine with other pieces to form combination pieces. (10x10, Cells: 100) By Robert Shimmin.
- Schizophrenic Chess . Game on 12x7 board with Left and Right Schizzys, Bobbers, Teleporters and other exotic pieces. Author: Peter Aronson. 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.
- Schoolbook. 8x10 chess with the rook + knight and bishop + knight pieces added. (10x8, Cells: 80) 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 (updated) . Missing description By Sam Trenholme.
- Scion. Missing description (10x10, Cells: 100) By Larry L. Smith.
- Scion . Missing description By Larry L. Smith.
- Scirocco. Play this decimal variant with several weak fairy pieces on Jocly. Author: H. G. Muller. Inventor: Adrian King.
- Scirocco (original) . On ten by ten board with over thirty different pieces. By Adrian King.
- Scirocco (original). On ten by ten board with over thirty different pieces. (10x10, Cells: 100) By Adrian King.
- Scirocco (revised) . 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. (10x10, Cells: 100) By Adrian King.
- Scout Chess. Introducing the Scout, combining queen-captures with Camelrider moves (zrf exists). By M Winther.
- Seachess. Chess with a marine war theme. (Cells: 128)
- The Secret Invisible Pass Chess. Missing description (10x10, Cells: 100) By Namik Zade.
- Secret King. A chess variant with 10 Knights, and a Secret King. (10x10, Cells: 100) By Florin Lupusoru.
- Secutor Chess. Introducing the Secutor piece, and new collision-capture, on a Gustavian board (zrf available). By M Winther.
- 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. Author: Peter Aronson. Inventor: Jörg Knappen.
- Sequence of Fibonacci and Lucas Chess Design Games. Variants based on Fibonacci numbers.
- 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.
- sFhIoDgEi. A variant nesting two different smaller variants within it. (17x17, Cells: 289) By Charles Gilman.
- Sha'rah. Missing description (13x13, Cells: 169) By Patrik Hedman.
- Shafran's Hexagonal Chess. I G Shafran's Game on the Game Courier. Author: Abdul-Rahman Sibahi. Inventor: Isaak Grigorevich Shafran.
- 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. Author: Michel Gutierrez and Jérôme Choain. Inventor: Jean-Louis Cazaux.
- Shako. Cannons and elephants are added in variant on 10 by 10 board. Author: Greg Strong. Inventor: Jean-Louis Cazaux.
- Shako. Cannons and elephants are added in variant on 10 by 10 board. (10x10, Cells: 100) Author: Jean-Louis Cazaux and Hans L. Bodlaender. Inventor: Jean-Louis Cazaux.
- Shako set. Photo of set for the large chess variant Shako. Author: Jean-Luc Muraro. Inventor: Jean-Louis Cazaux.
- Shako_Balbo. Game with Diamond Shape Board. By wdtr2.
- Shatranj al-Sultan. Normal Chess + Alibaba , with a Sultanic flavour . (10x8, Cells: 80) By Abdul-Rahman Sibahi.
- Shatranj Elephants. Two decimal variants: 'Shatranj Elephants' and 'Chaturanga'. By Christine Bagley-Jones.
- Shatranj Kamil I. Large shatranj variant with new piece: camel. (10x10, Cells: 100) Author: Hans L. Bodlaender.
- Shatranj Kamil II. Large historic shatranj variant with new piece: dabbabah or war machine. (10x10, Cells: 100) Author: Hans L. Bodlaender.
- Shatranj Kamil X. Shatranj Kamil, with new pieces from Jetan, Shogi and Xiangqi. (10x10, Cells: 100) By David Paulowich.
- 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). Author: Larry L. Smith. Inventor: Gary K. Gifford.
- 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 Plus . Play four large historical variations of Shatranj including Tamerlane Chess! Author: Malcolm Maynard.
- Shikaar. Missing description (9x9, Cells: 79)
- Shogchess. Missing description (9x11, Cells: 99) By Hafsteinn Kjartansson.
- Shogessi (The Allday Wars) . An original large, multiplayer Chess/Shogi variant.
- Shogessi.... A link to the Tabletop Simulator module. Updated rules/graphics. (17x(17x19), Cells: 289) By Eric Watkins.
- Shogi with Cannons. Missing description (9x9, Cells: 81) By John Smith.
- Shogi With Pokémons. Pokemons with special powers are added to an otherwise normal shogi board. (11x11, Cells: 121) By (zzo38) A. Black.
- 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-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.
- Shoko Shogi. Smaller variant of Hook Shogi on a 13x13 board. (13x13, Cells: 169) By A. M. DeWitt.
- SHORANJI Maximus. 9 x 12 variant of Six Fortresses Short Range. 2-Step pawn initial move option. By Gary K. Gifford.
- Short Sliders. Pieces are initially limited to 4 spaces (if that), and promote to longer moves. (12x16, Cells: 192) By Bob Greenwade.
- 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.
- 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.
- Shuffle Version Azchess . Missing description By Namik Zade.
- Shuuro. Large variant where you build your own army. (12x12, Cells: 144) Author: Alberto Giusti. Inventor: Alessio Cavatore.
- Siege Chess. Historic chess variant with fortress on cross-shaped board. Author: Hans L. Bodlaender.
- Silver Elephant Chess. Missing description (10x8, Cells: 80) By Jose Carrillo.
- 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.
- 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. Author: Uwe Wiedemann. Inventor: Carlos Cetina.
- Skandaran Chess. Large variant with 32 pieces per side. (12x12, Cells: 144) By Francisco Marzoa.
- Skandaran Chess. Download Skandaran Chess at Zillions Website. By Francisco Marzoa.
- 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.
- Skidoo Chess. Pieces can "skidoo" into an interior board. (2x(8x8), Cells: 128) By John Smith.
- SMIRF. Program that plays various 8x10 chess variants. Author: Reinhard Scharnagl.
- Snowflake Xiang Qi. A better Xiang Hex. (Cells: 140) By John Smith.
- The Sons of Mithra. Elaborate Fantasy variant with 13 different types of pieces per side. (10x10, Cells: 100) Author: Michael Chang Gummelt. Inventor: Michael Chang Gummelt and Holly Gummelt.
- The Sons of Mithra. Computer program for playing fantasy variant. Author: Michael Chang Gummelt. Inventor: Michael Chang Gummelt and Holly Gummelt.
- 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.
- Sosarian Chess. 12x8 Game with Capablanca-type pieces plus two lions. By Greg Strong.
- Sovereign Chess. Ten neutral armies can be activated on this 16 x 16 board. (16x16, Cells: 256) By Mark Bates.
- SpaceWar. SpaceWar. By Joe Joyce.
- SpaceWar. SpaceWar rules. (16x12, Cells: 192) By Joe Joyce.
- Spinach Chess. Right to make powerfull move alternates between players in variant with two kings. (8x8, Cells: 68) By Hans L. Bodlaender.
- Spinal Tap Chess . Variant on an 11x11 board with a once-a-game mass 'Battle Move' of Pawns and Crabs. Author: Peter Aronson. Inventor: 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 Redux. Updated version of Spinal Tap Chess with some pieces from Existentialist Chess. (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. Author: Peter Aronson. Inventor: David Short.
- 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.
- Squarcle Chess . Orthogonal pieces travel in square loops, diagonal pieces reflect. Author: Fergus Duniho. Inventor: Christan Hupp.
- Squarcle Chess. Orthogonal pieces travel in square loops, diagonal pieces reflect. (8x8, Cells: 64) By Christan Hupp.
- 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.
- Stack Chess. Pieces are stacks of chips. (10x10, Cells: 100) By Doug Chatham.
- Star Pool Chess. Large variant of Makruk, with a center non-square that acts as a bridge. By Tony Quintanilla and Peter Aronson.
- Star Pool Chess . Large variant of Makruk, with a center non-square that acts as a bridge. Author: Peter Aronson. Inventor: Peter Aronson and Tony Quintanilla.
- Star Pool Chess. Large variant of Makruk, with a center non-square that acts as a bridge. (Cells: 84) Author: Tony Quintanilla. Inventor: Peter Aronson and Tony Quintanilla.
- Star Pool Chess Zillions Saved Game . Download this file to see a saved game. By Tony Quintanilla and Peter Aronson.
- 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.
- Stelliform 6 player Chess. Stellisch from Wellisch, Stellicorn from Revergent, and Stellgi and Hexgi. (17x17, Cells: 121) By Charles Gilman.
- Step by Step Handicap Chess . Missing description By Namik Zade.
- Stheno Chess. Introducing the repulsive Stheno, which repels pieces as far as possible in the alignment direction (zrf available). By M Winther.
- Stone's Chess. Chess variant with the addition of two Archbishops. (10x8, Cells: 80) By rhett applestone.
- Stones and Relays. An extended version of Eight-Stone Chess. (8x9, Cells: 72) By Jim Aikin.
- 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.
- Strange Chess. A large (12x12) chess variant. (12x12, Cells: 144) By Mark Hedden.
- StrataChess v1.0. separate Strategic and Tactical gameplay. 2-6 players. Element of Chance. Terrain. Build your own armies. By Prussia General.
- StrategiChess . Large multi-player, multi-board chess variant. (14x14, Cells: 196) By Alan Cartwright.
- StrategiChess II . Large, multi-player, mult-board variant with new piece types. (14x14, Cells: 196) By Alan Cartwright.
- Stratomic. Decimal variant with a nuclear missile piece. (10x10, Cells: 100) Author: Jean-Louis Cazaux. Inventor: Robert Montay-Marsais.
- Strong Yang. Another way of applying the Nearlydouble principle to a variant with Cannons. (13x13, Cells: 169) By Charles Gilman.
- SUCCHESS. Missing description (10x10, Cells: 100) By Djafer Medjahed.
- Sudoku Chess . Missing description By Doug Chatham.
- 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.
- The Sultan's Game. Variant on 11 by 11 board from 19th century Germany. (11x11, Cells: 121) Author: Greg Strong. Inventor: Peguilhen.
- Sultanspiel. Play this large 19th century variant on Jocly. Author: Michel Gutierrez and Jean-Louis Cazaux. Inventor: Peguilhen.
- Sunflower HexChess. Hexagonal Chess in-the-round. (Cells: 120) By Graeme C Neatham.
- Super Chess 1993. Missing description (14x14, Cells: 196) Author: Sam Trenholme. Inventor: Michael N Goldshteyn.
- Super Chess II. Proprietary game from the 1970's. Author: Ed Friedlander. Inventor: Ralph Lauterbach.
- 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. Author: Ed Friedlander. Inventor: Ed Ginsberg.
- Super Chess III . Big proprietary game with archers and cyclopses. Author: Larry L. Smith. Inventor: Ed Ginsberg.
- Super Knights Chess 2. The Archbishop and Chancellor are complimented by a Ferz Knight, a Wazir Knight and Ninja Pawns. By Charles Daniel.
- 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 Maharadscha . Missing description By Namik Zade.
- 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.
- Superchess and Monarch. Booklet in English and Dutch and book in Dutch about large chess variants with fantasy pieces. Author: Hans L. Bodlaender. Inventor: Henk van Haeringen.
- Superchess by Lim Ther Peng. Information on a book on a large chess variant. Inventor: Lim Ther Peng.
- Superchess in Corus Chess tournament. Missing description Inventor: Henk van Haeringen.
- Superschaak. Book and sets for playing variants with many new types of chess pieces. Author: Hans L. Bodlaender. Inventor: Henk van Haeringen.
- Supremo Superchess. Decimal variant with extra powerful pieces. (10x10, Cells: 100) By Lim Ther Peng.
- Suzumu Shogi. 16x16 variant based on Tenjiku Shogi. (16x16, Cells: 256) By A. M. DeWitt.
- Sweet 16 Chess. Play this hexadecimal variant that uses only Chess pieces on Jocly. Author: Michel Gutierrez and Jérôme Choain.
- Symchess. 10 x 10 setup with Capablanca-esque pieces and camels or fils. By Namik Zade.
- Symchess. Missing description (10x10, Cells: 100) By Namik Zade.
- 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.
- 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 Sissa . Variant on 9 by 9 board with symmetric setup and two Sissa's (generalized Knight-like sliders). Author: Uwe Wiedemann. Inventor: Carlos Cetina.
- Symmetric Sissa. Problem based on an actual game. By Ben Good.
- 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. Author: Derek Nalls and Larry L. Smith. Inventor: Derek Nalls.
- Symmetron! 112 . Large version of Symmetron!, with a third modifier. By Antoine Fourrière and Roberto Lavieri.
- Symmetron! 112. Large version of Symmetron!, with a third modifier. Author: Antoine Fourrière. Inventor: Antoine Fourrière and Roberto Lavieri.
- Symmetron! 112. Large version of Symmetron!, with a third modifier. (11x10, Cells: 112) By Antoine Fourrière and Roberto Lavieri.
- Tai Shogi. Very large Shogi variant.
- Tai Shogi pictures. Photos of a commercially available Tai Shogi set. Author: John Lawson.
- Taikyoku Photographs. Missing description Author: David Howe and Edward Strickland.
- Taikyoku Shogi. Extremely large shogi variant. (36x36, Cells: 1296) Author: Isao Umebayashi and Larry L. Smith.
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