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- 38-Challenge: Index page. Missing description Author: Hans L. Bodlaender.
- 39-Challenge: Index page. Missing description Author: Hans L. Bodlaender.
- 3d Minishogi. A variant originally devised for a contest that never materialised. (3x(3x5), Cells: 45) By Charles Gilman.
- 3x3 Chess. A complete analysis of Chess on a three by three board with FIDE pieces. Inventor: Kirill Kryukov.
- 4-Player Pothole Chess. Bulldozers and cars and other vehicles are pieces in 4-player chess variant. (7x7, Cells: 39) and Seth Blanchard. and Seth Blanchard.
- 40-squares chess variant design contest.. Missing description Author: Hans L. Bodlaender.
- 40-squares chess variant design contest: Winners. Missing description Author: Hans L. Bodlaender.
- 41-squares chess variant design contest. Contest rules. Author: Hans L. Bodlaender.
- 41-squares chess variant design contest.. Missing description Author: Hans L. Bodlaender.
- 42-squares chess variant design contest.. Missing description Author: Hans L. Bodlaender.
- 43-squares chess variant design contest.. Missing description Author: Glenn Overby II and Hans L. Bodlaender.
- 44-squares chess variant design contest.. Our annual N-squares chess variant design competition. Author: Hans L. Bodlaender.
- 6 Ranks, remaining variants. Extrapolations from the Diana/Los Alamos/Haynie's Primary family of variants. (6x6) By Charles Gilman.
- Action Man's Chess. A small (5x6) board and simple pieces ensures lots of easy-to-understand action. (5x6, Cells: 30) By Francois Tremblay.
- Afterlife Chess. A game based on Ancient Egyption mythology, played on four boards totaling 42 squares. (Cells: 42) By Luiz Carlos Campos.
- Alapo . Game with abstract pieces. Reach opponents first row on 6 by 6 board. Author: Uwe Wiedemann. Inventor: Johannes Tranelis.
- Alapo. A small chesslike game. Author: Ben M Reiniger. Inventor: Johannes Tranelis.
- Alapo. Simplified game. Author: Ed Friedlander. Inventor: Johannes Tranelis.
- Alapo. Game with abstract pieces. Reach opponents first row on 6 by 6 board. (6x6, Cells: 36) Author: Hans L. Bodlaender. Inventor: Johannes Tranelis.
- Amoeba. Jim Aikin's Amoeba on the Game Courier. Author: Abdul-Rahman Sibahi. Inventor: Jim Aikin.
- Amoeba. Small variant with 38 movable squares. (7x7, Cells: 38) By Jim Aikin.
- Amphora . Chess variant inspired by game of Stone Warriors on wine bottle shaped board with 40 squares. Author: Jens Markmann. Inventor: Peter Aronson.
- Amphora. Chess variant inspired by game of Stone Warriors on wine bottle shaped board with 40 squares. (Cells: 40) By Peter Aronson.
- An-Qi. Played on the squares of half a Xiangqi board but using all the pieces. (8x4, Cells: 32)
- Analysis of 3x3 Chess. A complete analysis of Chess on a three by three board with FIDE pieces. Inventor: Kirill Kryukov.
- Apocalypse. Small variant of knights and pawns; objective is to take all pawns. Author: Ben M Reiniger. Inventor: C. S. Elliott.
- Apocalypse Mini-Chess. Miniature version with four horsemen. Author: Ed Friedlander. Inventor: C. S. Elliott.
- Arena Chess 42. A non-competing entry in the 42 Squares contest. (Cells: 42) By David Howe.
- Arena Chess 42 . Game with two boards totaling 42-squares where pieces captured on the large board move to the small board. By David Howe.
- Arnhem Chess. Game on board of 38 squares. (6x7, Cells: 38) By Hans L. Bodlaender.
- Aronson, Peter. Interview with the winner of the 44 squares contest. Author: Peter Aronson and Hans L. Bodlaender.
- Ascension. 6x6 board with two Kings that promote to royal Queens. By Albert Lee.
- Asteryx Chess. Hexagonal chess played on an asterisk-shaped board. (Cells: 43) By David Jagger.
- Asteryx Chess. Preset for variant with asteryx shaped 43-space hexagonal board. Author: Fergus Duniho. Inventor: David Jagger.
- Asteryx Chess. Sample Game. By David Jagger.
- Baby Chess. Play this small 5x5 variant on Jocly. Author: Michel Gutierrez and Jérôme Choain. Inventor: Martin Gardner.
- Bachelor Chess. Play this game from the 42-square contest with the PBM system! By Doug Chatham.
- Bachelor Chess. Win by mating your opponent, or marrying off your King. (7x6, Cells: 42) By Doug Chatham.
- Bachelor Chess . Win by mating your opponent, or marrying off your King. By Doug Chatham.
- Bachelor Nimrod. Small variant with one each of distinctive Nimrod pieces, and of Knight. (6x6, Cells: 36) By Charles Gilman.
- Battery Chess. Battery Chess on the Game Courier. By Abdul-Rahman Sibahi.
- Battery Chess. Chess on a Battery shaped board, with lots of batteries. (5x10, Cells: 46) By Abdul-Rahman Sibahi.
- Battle Room Chess. Win by getting four of your pieces in or around your enemy's gate. By John Smith.
- Ben 39. Pieces move on squares and corners of board with 37 fixed and two movable squares. (Cells: 39) By Ben Good.
- Beryl Chess. Variant on board of 39 triangles. (Cells: 39) By Alexandre Muñiz.
- Bingo Chess. A cross between Chess and Bingo. (Cells: 41) By Doug Chatham.
- Biparite Chess. Small chess variant with two phases. (5x7, Cells: 43) By Timothy R. Newton.
- Bird Shogi. Tori Shogi, or Bird Shogi. A variant of Japanese Chess on a 7 by 7 board. (7x7, Cells: 49) Inventor: Ohashi Soei.
- Black Holes. On 5 by 8 board with holes as pieces which also can be used for transport. (5x8, Cells: 40) By Juraj Lörinc.
- Black Holes . On 5 by 8 board with holes as pieces which also can be used for transport. Author: Peter Aronson. Inventor: Juraj Lörinc.
- Blind Chess. Played on the squares of half a Xiangqi board but using all the pieces. (8x4, Cells: 32)
- Border Wars. Game played on the 42 edges of a grid, with elements of Shogi and XiangQi. (Cells: 42) By Jared B. McComb.
- Border Wars . Game played on the 42 edges of a grid, with elements of Shogi and XiangQi. Author: Peter Aronson. Inventor: Jared B. McComb.
- Border Wars II. Game played on line edges with Shogi-like aspects. (Cells: 44) By Jared B. McComb.
- Border Wars II . Game played on line edges with Shogi-like aspects. Author: Peter Aronson. Inventor: Jared B. McComb.
- Borderline. Without pawns, with only one king, capturing opponent's pieces is omitted. (7x7, Cells: 49) By Gerd P. Degens.
- Bottleneck Chess. Most pieces start the game locked up in two bottleneck parts of the board. (Cells: 41) By Köksal Karakus.
- Bottleneck Chess . Most pieces start the game locked up in two bottleneck parts of the board. By Köksal Karakus.
- The Bridge 41. 41 square board with bridge in the middle. (5x9, Cells: 41) By Hubert Lamontagne.
- The Bridge41 . 41 square board with bridge in the middle. Author: Peter Aronson. Inventor: Hubert Lamontagne.
- Building chess. Add a square after every move. Author: Abdul-Rahman Sibahi. Inventor: Abdul-Rahman Sibahi and Sergey Sirotkin.
- Bushi shogi. Shogi variant on a two-square board! Bushi means Samurai. By Georg Dunkel.
- Bushi Shogi. Extremely small shogi variant played with cube pieces. Author: Larry L. Smith. Inventor: Georg Dunkel.
- By Rook Or by Crook. Chess in the round on a hexagonal board with 42 trapezoidal squares. (Cells: 42) By Jeff Rients.
- Caïssa. Christian Freeling's game with a royal queen. Author: Ed Friedlander. Inventor: Christian Freeling.
- Caïssa. On a 7 by 7 board with disappearing squares. (7x7, Cells: 49) By Christian Freeling.
- Caliph Qi. Extension of Isis with compound colourbound pieces and overlapping royal-accessible areas. (6x9) By Charles Gilman.
- Cannons and Crabs. A variant on a 7x6 board with Crabs (improved Pawns), and Cannons (leapers). (7x6, Cells: 42) By David Short.
- Cannons and Crabs . A variant on a 7x6 board with Crabs (improved Pawns), and Cannons (leapers). Author: Peter Aronson. Inventor: David Short.
- Canyon Chess. Play this small variant with Marshalls and Archbishops and some new rules! Author: Tony Quintanilla. Inventor: Andrew Blechinger and Jarry Vega.
- Canyon Chess. Small variant with Marshalls and Archbishops and some new rules. (8x8, Cells: 44) By Andrew Blechinger and Jarry Vega.
- Capture the Flag Chess. A translation of the classic children's game to a 42-square board. (7x6, Cells: 42) By Thomas Cameron.
- Capture-the-flag Chess . A translation of the classic children's game to a 42-square board. Author: Peter Aronson. Inventor: Thomas Cameron.
- Cascudo. On 44-square hexagonal board with turns consisting of cascade of moves. (Cells: 44) By David Jagger.
- Central Point Chess. Small 7x7 game with different pieces. By QIDb602.
- Chameleon . Chess variant on board of 41 colored squares, where pieces change type depending on color of square the move to. By Tony Quintanilla.
- Chameleon. Chess variant on board of 41 colored squares, where pieces change type depending on color of square the move to. (7x7, Cells: 41) By Tony Quintanilla.
- Chameleon Chess . Each player has a King and 11 Chameleons whose moves are determined by the type of square they are on. Author: Peter Aronson. Inventor: P. D. Magnus.
- Chameleon Chess. Each player has a King and 11 Chameleons whose moves are determined by the type of square they are on. (6x7, Cells: 42) By P. D. Magnus.
- Chec Toe. Chec Toe is a 4x4 Chess variant played with a six sided die, incorporating uniquely designed features, such as Checkering, Cross. By Simon Edward Jepps.
- Chennis. Kyoto-Shogi-inspired variant (with alternating piece sides), with a tennis theme. By Daniel Lee.
- Chess - The Speed Game . Chess on a 5 by 6 board. Author: Marek14 . Inventor: ? denOude.
- Chess - The Speed Game. Chess on a 5 by 6 board. (5x6, Cells: 30) Author: Hans L. Bodlaender. Inventor: ? denOude.
- Chess - the Speed Game. Photo's of set. Author: Hans L. Bodlaender. Inventor: ? denOude.
- Chess Attack. Play this small 5x6 variant with Jocly. Author: Michel Gutierrez and Jérôme Choain. Inventor: Werner Kling.
- Chess in the Fast Lane . The 64-squares of a regular Chess board are grouped into 41 "regions" producing a small board that looks full size. Author: Peter Aronson. Inventor: Francois Tremblay.
- Chess in the Fast Lane. The 64-squares of a regular Chess board are grouped into 41 "regions" producing a small board that looks full size. (8x8, Cells: 41) By Francois Tremblay.
- Chess on a Board with 37 Squares . Game with full Chess arrays minus a Pawn on a 37 square board without any corners. Author: Andrew Juell. Inventor: Alfred Pfeiffer.
- Chess on a board with 37 squares. Game with full Chess arrays minus a Pawn on a 37 square board without any corners. (Cells: 37) Author: Alfred Pfeiffer and Hans L. Bodlaender. Inventor: Alfred Pfeiffer.
- Chess on a Soccer Ball. Missing description (Cells: 32) By David Cannon.
- Chess on a Soccer Ball . Chess played on the 20 hexagons and 12 pentagons of a soccer ball. By David Cannon.
- Chess Remix. Create your chess variant. () By Alexandr Oleshko.
- Chess with Different Periods. Missing description (6x6, Cells: 36) By Yu Ren Dong.
- Chess with Different Periods . A Turn-related variant of Los Alamos Chess. Players may play with many modest variants. By Yu Ren Dong.
- Chess37 . A chess variant on a board with 37 squares where pieces outside of the center 9 squares move like Kings. Author: Andrew Juell. Inventor: David Howe.
- Chess37. A chess variant on a board with 37 squares where pieces outside of the center 9 squares move like Kings. (Cells: 37) By David Howe.
- Chesscala. Missing description (6x8, Cells: 48) By Francois Tremblay.
- Chessence. Units move and capture depending on their proximity to their colleagues. Author: Ed Friedlander. Inventor: Jim Winslow.
- Chessence . Variant on a 9 x 6 board with 8 missing squares, immobile Kings, and 9 pieces whose movement depends on their spatial relation. Author: Alfred Pfeiffer. Inventor: Jim Winslow.
- Chessence. Variant on a 9 x 6 board with 8 missing squares, immobile Kings, and 9 pieces whose movement depends on their spatial relation. (6x9, Cells: 46) Author: Peter Aronson. Inventor: Jim Winslow.
- Chessence. Small variant with many possible winning conditions. By Stephen Sniderman.
- Chestria. Each player has 11 randomly selected pieces in this game of placement and flipping. (3x(5x5), Cells: 43) By Jared B. McComb.
- Chinese court. Missing description By Daniil Frolov.
- Chipps. Let all pieces gain a chip by moving to the other side of 4 by 8 board. (4x8, Cells: 32) By Mark Leff.
- Chogo-44. Game with pawns and kings with co-enclosure capture. Author: Jeff Rients. Inventor: David Jagger.
- Chogo44. Game with pawns and kings with co-enclosure capture. (7x8, Cells: 44) By David Jagger.
- Chromopolis. `Almost' colorbound pieces on a cylindrical board of 40 squares. (7x6, Cells: 40) By Alexandre Muñiz.
- Clash of Command. Chesslike game with pieces that change and leave behind other pieces on special board. (Cells: 41)
- Clash of Command . Chesslike game with pieces that change and leave behind other pieces on special board.
- Claustrophobia. Played utilizing 46 squares of a chessboard, using new unique pieces, all of which can be represented by the standard pieces. (5x8, Cells: 46) By Charles Daniel.
- Color Chess. Freeware program playing variant on 36 colored squares. By Maarten Bodlaender.
- Color Chess. Chess variant on board with 39 squares with five different colors. (6x6, Cells: 36) Author: Hans L. Bodlaender. Inventor: Maarten Bodlaender.
- Combination Chess . Pieces give their movement capabilities to friendly pieces in their zone of influence. By David Howe.
- Combination Chess. Pieces give their movement capabilities to friendly pieces in their zone of influence. (Cells: 39) By David Howe.
- Compact Chess. Small version popular in South Africa. Author: Ed Friedlander.
- Compact Hex Chess. 2 normal hex armies on a board reduced to sides of length 5. (9x9, Cells: 61) By Charles Gilman.
- Congo. Animals fight on 7 by 7 board. Author: Ed Friedlander. Inventor: Christian Freeling.
- Congo. Animals fight on 7 by 7 board. (7x7, Cells: 49) Author: Christian Freeling. Inventor: Demian Freeling.
- Congo. Demian Freeling's Congo on the Game Courier. Author: Abdul-Rahman Sibahi. Inventor: Demian Freeling.
- Contest to design a chess variant on a board with 38 squares.. Missing description Author: Hans L. Bodlaender.
- Contest to design a chess variant on a board with 39 squares.. Missing description Author: Hans L. Bodlaender.
- Contest to design a chess variant on a board with 40 squares. Missing description Author: Hans L. Bodlaender.
- Contest to design a chess variant on a board with 41 squares. Missing description Author: Hans L. Bodlaender.
- Contest to design a chess variant on a board with 42 squares. Missing description Author: Hans L. Bodlaender.
- Contest to design a chess variant on a board with 43 squares. Missing description Author: Glenn Overby II and Hans L. Bodlaender.
- Contest to design a chess variant on a board with 44 squares. Our annual N-squares chess variant design competition. Author: Hans L. Bodlaender.
- Convergent Chess . Attack king directly or move to its home square on board with 40 squares. By A.J. Winkelspecht.
- Convergent Chess. Attack king directly or move to its home square on board with 40 squares. (6x6, Cells: 40) By A.J. Winkelspecht.
- Courtyard. Variant on 5 by 8 board. (5x8, Cells: 40)
- Courtyard . Variant on 5 by 8 board. Author: Marek14 .
- Courtyard Photographs. Photo's of constructed set of 40 squares variant. Author: Fergus Duniho.
- Crazy 38's. Ben Good's Crazy 38's on the Game Courier. Author: Abdul-Rahman Sibahi. Inventor: Ben Good.
- Crazy 38's. On strange board with 38 squares. (Cells: 38) (Recognized!) By Ben Good.
- Crazy 38's . On strange board with 38 squares. Author: Robert Price. Inventor: Ben Good.
- Cube Shogi. Shogi with cube-shaped pieces. By John Smith.
- Cube+. Three dimensional chess variant with 38 squares. (3x(3x4), Cells: 38) By Jim Aikin.
- Cube+ . Three dimensional chess variant with 38 squares. Author: Marek14 . Inventor: Jim Aikin.
- Cycle Chess. Variant on a board with 39 cells, three of which are special. (6x6, Cells: 39) By Andy Kurnia.
- Cycle Chess . Variant on a board with 39 cells, three of which are special. Author: David Howe. Inventor: Andy Kurnia.
- Dagger Chess. Hexagonal variant on board with 39 squares. (Cells: 39)
- Danadazo. Game played on the 47 edges of a grid with rounded corners, borrowing elements from Tafl. (Cells: 47) By Jared B. McComb.
- Dart Chess . Chess on a 6x6 board with a new piece: the Dart. Author: Marek14 . Inventor: Darren Izzard.
- Dart Chess. Chess on a 6x6 board with a new piece: the Dart. (6x6, Cells: 36) By Darren Izzard.
- Dave's Example Game. This is Dave Howe's example of a user-posted game. (2x2, Cells: 4) By David Howe.
- Demi Chess . Chess on a 4 by 8 board. Author: Marek14 . Inventor: Peter Krystufek.
- Demi Chess. Play this half-sized Chess variant on Jocly. Author: Michel Gutierrez and Jérôme Choain. Inventor: Peter Krystufek.
- Demi chess. Chess on a 4 by 8 board. (4x8, Cells: 32) Author: Hans L. Bodlaender. Inventor: Peter Krystufek.
- Demi-Chess . Chess on a 4 by 8 board. Author: Uwe Wiedemann. Inventor: Peter Krystufek.
- Diamond Chess . Chess variant on diamond shaped board with 40 squares. Author: Jens Markmann. Inventor: Bruce Mills.
- Diamond Chess. Chess on a Diamond board. By Abdul-Rahman Sibahi.
- Diamond Chess. Chess variant on diamond shaped board with 40 squares. (Cells: 40) By Bruce Mills.
- Diana . Chess on a 6 by 6 board. Author: Marek14 . Inventor: ? Hopwood.
- Diana. Chess on a 6 by 6 board. (6x6, Cells: 36) Author: Hans L. Bodlaender. Inventor: ? Hopwood.
- Diana Chess. Miniature chess game from the late 1800's. Author: Ed Friedlander. Inventor: ? Hopwood.
- Diana Chess . Chess on a 6 by 6 board. Author: Uwe Wiedemann. Inventor: ? Hopwood.
- Diminuendo Chess. Hexagonal variant: captured pieces are dropped in the center and diminished, not removed. (7x8, Cells: 43) By David Jagger.
- Dino-Czars . Battle between rival dinosaurs on a board of 42 triangles, where facing counts. By Clark Rodeffer.
- Dino-Czars. Battle between rival dinosaurs on a board of 42 triangles, where facing counts. (Cells: 42) By Clark Rodeffer.
- Diplomat Chess . Round-board variant with a Diplomat to suborn opponents. By Carlos Martin-Fuertes.
- Diplomat Chess. Round-board variant with a Diplomat to suborn opponents. (Cells: 43) By Carlos Martin-Fuertes.
- Do-or-die Chazz . Pawns that can move backward and kings only on 5 by 8 board. Author: Marek14 .
- Do-or-die Chazz. Pawns that can move backward and kings only on 5 by 8 board. (8x5, Cells: 40)
- Do-or-die Chess. Chess on an 8-by-5 board. Three ranks have been removed. (8x5, Cells: 40)
- Do-or-die Chess . Chess on 5 by 8 board: three rows removed. Author: Marek14 .
- Dobutsu Shogi. The smallest Shogi variant made for kids to learn Shogi. (3x4, Cells: 12) Author: Lev Grigoriev and Tamás Bajusz. Inventor: Madoka Kitao.
- Dodl schach: photo's. Photo's of a very small chess variant set. Author: Hans L. Bodlaender.
- Dodl-schach . A truly small variant. Author: Marek14 .
- Dodl-schach. A truly small variant. (6x4, Cells: 24) Author: Hans L. Bodlaender.
- Dodl-schach. Photo's of Dodl-schach: a very small chess variant. Author: Hans L. Bodlaender.
- Dollar Chess . Almost 1-Dimensional Variant on a Dollar sign-shaped board. Author: Marek14 . Inventor: Sergey Sirotkin.
- Dragonfly. Drop pieces you have taken on a 7 by 7 board. (7x7, Cells: 49) By Christian Freeling.
- Dragonfly. Christian Freeling's 7x7 Chessgi type variant. No Queens. Pawns don't drop. Author: Gary K. Gifford. Inventor: Christian Freeling.
- Dream Chess 46. 46-squasre variant played from opposite corners of a FIDE board with the other corners removed. (8x8, Cells: 46) By Charles Gilman.
- Dream Chess 47. 47-square variant played from opposite corners of a 7 by 7 board with the other corners removed. (7x7, Cells: 47) By Charles Gilman.
- Duel Chess. Captured pieces are sent to a separate Duel board to see who is eliminated and who returns. (2x(5x7), Cells: 43) By Erez Schatz.
- Duel Chess. PBM Preset for 43-space variant played on two boards. Author: Fergus Duniho. Inventor: Erez Schatz.
- Dueling Archbishops. Chess game with only six cells but with a piece that morphs into four different forms. Author: Jeremy Gabriel Good. Inventor: Jason D. Wittman.
- Dueling Archbishops. Chess variant on 2 by 3 board. (2x3, Cells: 6) By Jason D. Wittman.
- Dueling Archbishops . Small chess variant on 2 by 3 board. By Jason D. Wittman.
- Echos. Transform your non-attacked, non-royal units as you like. Author: Ed Friedlander. Inventor: Vladimir Pribylinec.
- Elena . Chess on 5 by 6 board. Author: Marek14 . Inventor: Sergey Sirotkin.
- Elena Chess . Chess on 5 by 6 board. Author: Uwe Wiedemann. Inventor: Sergey Sirotkin.
- Elena Chess. Chess on 5 by 6 board. (5x6, Cells: 30) By Sergey Sirotkin.
- En passant Chess. Orthodox chess on a shortened board of only 7 rows. Encourages more en passant moves.
- En Passant Chess of Ingo Althofer. This is just FIDE Chess, but with board contracted by one row. Try it out. Author: Jeremy Gabriel Good.
- Epsilon Eridani . A 44-square version of Achernar. By Roberto Lavieri.
- Epsilon Eridani. 44-square version of Achernar. (9x5, Cells: 44) By Roberto Lavieri.
- Equestrian Chess. On diamond shaped board with reentry squares and different pieces. (Cells: 41) By Jason D. Wittman.
- Equestrian Chess . On diamond shaped board with reentry squares and different pieces. By Jason D. Wittman.
- Eric's 40-square Fiasco . Game on 5 by 8 board with three pieces that start in reserve. Author: Marek14 . Inventor: Eric Richardson.
- Eric's 40-square Fiasco!. Game on 5 by 8 board with three pieces that start in reserve. (5x8, Cells: 40) By Eric Richardson.
- Espionage Chess . Spy can only be captured in turn after it has moved in 41-square variant. Author: Peter Aronson. Inventor: Sergey Sirotkin.
- Espionage chess. Spy can only be captured in turn after it has moved in 41-square variant. (7x7, Cells: 41) By Sergey Sirotkin.
- Etcetera . This variant has some elements of Chinese Chess. Also, pieces cannot capture pieces of their own type. By Roberto Lavieri.
- Etcetera. This variant has some elements of Chinese Chess. Also, pieces cannot capture pieces of their own type. (7x8, Cells: 56) By Roberto Lavieri.
- Evolution Chess. 42-square game where each player starts with 20 Knights that evolve and a King. (7x6, Cells: 42) By Jason D. Wittman.
- Evolution Chess . 42-square game where each player starts with 20 Knights that evolve and a King. By Jason D. Wittman.
- Extended Half-chess. Variant on 4 by 10 board. (4x10, Cells: 40)
- Extended Half-Chess . Variant on 4 by 10 board. Author: Uwe Wiedemann.
- Family Matters Chess . Chess variant of warring families on 41 and 64 square boards. By Tomas Forsman.
- Family matters chess (small). Variant on 41 square board. (Cells: 41) By Tomas Forsman.
- Fanorona Chess . Variant played on a Fanorona board with capture by approach and by withdrawal. By Peter Aronson.
- Fanorona Chess. Variant played on a Fanorona board with capture by approach and by withdrawal. (5x9, Cells: 45) By Peter Aronson.
- Fault Line. Fault Line. (8x6, Cells: 40) By Patrick Riley.
- Feeble Los Alamos Chess. Los Alamos Chess using Feeble pieces. (6x6, Cells: 36) By David Howe.
- Feeble Los Alamos Chess . Los Alamos Chess using Feeble pieces. By David Howe.
- Five-Minute Poppy Shogi. Small shogi variant on a 4 by 5 board. (4x5, Cells: 20) Author: Hans L. Bodlaender. Inventor: Oyama Yasuharu.
- Fleap. Pieces move as equihoppers, but become FIDE pieces after being captured. (5x9, Cells: 43) By Gavin King.
- Flip Chess . Pieces have two sides with different movements on board of 38 squares. Author: Hans L. Bodlaender. Inventor: John William Brown.
- Flip Chess. Missing description Author: Ed Friedlander. Inventor: John William Brown.
- Flip Chess and Flip Shogi. Pieces have two sides with different movements on board of 38 squares. (7x6, Cells: 38) (Recognized!) By John William Brown.
- Flip Shogi. Missing description Author: Ed Friedlander. Inventor: John William Brown.
- FlipChess. Chess variant in which pieces keep changing state. By M. El M. Messaoudi.
- FlipFlop. A minimalistic Chess-like game with only one type of piece. Author: Ola Sassersson. Inventor: Masahiro Nakajima.
- Flipping Xiangqi. Hybrid of Xiangqi & Kyoto Shogi – flip the pieces after each turn. (7x7, Cells: 49) By Lev Grigoriev.
- Fluky Chess. Fast-paced mini-chess variant with dice. (5x5, Cells: 25) By Ilya Yudovski.
- Four File Chess. Variant on 4 by 10 board. (4x10, Cells: 40) By Kris Barski.
- Free Corners chess . In the corners of seven by seven board, three squares form together one field. Author: Peter Aronson. Inventor: Sergey Sirotkin.
- Free corners chess. In the corners of seven by seven board, three squares form together one field. (7x7, Cells: 41) By Sergey Sirotkin.
- Fusion Diamond 41 . A Fusion Chess variant played on a diamond shaped board of 41 squares. By Fergus Duniho.
- Fusion Diamond 41. A Fusion Chess variant played on a diamond shaped board of 41 squares. By Fergus Duniho.
- Fusion Diamond 41. A Fusion Chess variant played on a diamond shaped board of 41 squares. (Cells: 41) By Fergus Duniho.
- Gnu. Simple game featuring the Gnu as promotee. (5x10, Cells: 50) By Joost Aan de Brugh.
- Gnu . Simple game featuring the Gnu as promotee. By Joost Aan de Brugh.
- Goal Box Chess . Game on 42 squares with no King and the goal of placing pieces into 2 special squares. Author: Peter Aronson. Inventor: Kevin McPartland.
- Goal Box Chess. Game on 42 squares with no King and the goal of placing pieces into 2 special squares. (5x8, Cells: 42) By Kevin McPartland.
- Goatsuckers. Small modern shogi variant on 5 by 5 board. (5x5, Cells: 25) and Patricia Hernandez.
- Green Chess. More than 100 chess variants playable online. By János M. Uray.
- Gufuu Shogi . Tiny variant on a 2x3 board with four pieces. By Georg Dunkel.
- Guschess. Pieces can freely move in one of 38 areas on the board. (8x8, Cells: 38) By Gustavo A. Vargas.
- Guschess . Pieces can freely move in one of 38 areas on the board. Author: Marek14 . Inventor: Gustavo A. Vargas.
- Hajiku Shogi. Inspired by Shogi and Chu Shogi. Pieces can both promote and demote in promotion zone. By Edward Webb.
- Half Chess. 4x8 board, plays well. Author: Ed Friedlander. Inventor: John Groeneman.
- Half Chess . On a 4 by 8 board without pawns. Author: Marek14 . Inventor: John Groeneman.
- Half Chess. On a 4 by 8 board without pawns. (4x8, Cells: 32) By John Groeneman.
- Half Courier. Missing description Author: Nick Wolff. Inventor: Charles Gilman.
- Half Courier. A Pawnless variant rearranging a slightly simplified Courier back rank onto two ranks. (6x8, Cells: 48) By Charles Gilman.
- Half Shogi and Half Xiang Qi. Applying the principles of Half Chess to Oriental games. (5x9, Cells: 45) By Charles Gilman.
- Halloween Knight Court. Halloween-themed variant on a tiny board. (3x3, Cells: 9) By Jason D. Wittman.
- Halloween Knight Court . Halloween-themed variant on a tiny board. By Jason D. Wittman.
- Hans 38 Gift Chess . Eric Greenwood's chess on a board with 38 squares. Author: Marek14 . Inventor: Eric V. Greenwood.
- Hans 38Special Chess. On a board with 38 squares. (6x6, Cells: 38) By Eric V. Greenwood.
- Hans 40 Gift Chess . Pieces are digits or letters and move like their form on 5 by 8 board. Author: Marek14 . Inventor: Köksal Karakus.
- Hans 40 Gift Chess. Pieces are digits or letters and move like their form on 5 by 8 board. (5x8, Cells: 40) By Köksal Karakus.
- Hans37 Chess. Chess variant for four players on a board of 37 squares. (Cells: 37) By Ralph Betza.
- Hans38 Chess. Eric Greenwood's chess on a board with 38 squares. (6x6, Cells: 38) By Eric V. Greenwood.
- Hans38 Chess. A form of Chess with a Limited Supply of Squares; entry of the 38-challenge. (8x8, Cells: 38) By Ralph Betza.
- Haynie's Primary Chess. On 6 by 6 board without knights. (6x6, Cells: 36) Author: Hans L. Bodlaender. Inventor: Billy Haynie.
- Heaven . Pieces trying to reach a goalfield can only move if in reach of a friendly piece. Author: David Howe. Inventor: Rob Nierse.
- Heaven. Pieces trying to reach a goalfield can only move if in reach of a friendly piece. (Cells: 39) By Rob Nierse.
- Herd. Experimental variant with jumping pieces on 7 by 7 board. (7x7, Cells: 49) By Sergey Sirotkin.
- Hex 39 . Hexagonal chess variant on small board with simple rules. Author: Marek14 . Inventor: Torben Mogensen.
- Hex Shogi 41. Hexagonal shogivariant on board with 41 spaces. By Fergus Duniho.
- Hex Shogi 41. Hexagonal shogivariant on board with 41 squares. (Cells: 41) By Fergus Duniho.
- Hex39. Hexagonal chess variant on small board with simple rules. (Cells: 39) By Torben Mogensen.
- Hexagonal Chess with Hexagonalers. Missing description By Jeremy Gabriel Good.
- Hexapawn. Martin Gardner's miniature game of three pawns vs the pawns. (3x3, Cells: 9) Author: Robert Price. Inventor: Martin Gardner.
- Hexapawn . Martin Gardner's miniature game of three pawns vs the pawns. Author: Robert Price. Inventor: Martin Gardner.
- Hexes Chess . Hexes Chess requires fewer chess pieces and a smaller board than conventional chess, but increases the mobility of each piece. Author: Ed Friedlander. Inventor: Mike Layfield.
- Hexes Chess . Link: Hexagonal Chess in 54 hexes, using orthodox pieces. Includes enhanced Pawn movement and castling. The board is elongated.&. By Mike Layfield.
- Hexes Chess . Hexes Chess requires fewer chess pieces and a smaller board than conventional chess, but increases the mobility of each piece. Author: Mike Layfield and Tony Quintanilla. Inventor: Mike Layfield.
- Hexes Chess. Hexes Chess now available for play on the Game Courier! Author: Mike Layfield and Tony Quintanilla. Inventor: Mike Layfield.
- Hexes Compressed Chess . Link: This version of Hexagonal Chess has rotated cells so that the angles point up and down. By Mike Layfield.
- Hexetera . Download Hexetera for ZOG! Also includes the game in squares: Etcetera! By Roberto Lavieri.
- Hexetera. Play Hexetera on the Game Courier! Author: Tony Quintanilla. Inventor: Roberto Lavieri.
- Hexetera. Small hexagonal variant with some elements of Chinese Chess. (Cells: 44) By Roberto Lavieri.
- Hibryd I. Game played on 4x4 board with a King and four Pawns each, neutral pieces, multiple forms of capture and many ways of winning. (4x4, Cells: 16) By Jared B. McComb.
- Hibryd III. An exotic three-player variant played on a board of 42 hexes with multiple victory conditions. (Cells: 42) By Jared B. McComb.
- Hippodrome. Solitaire game using a small board. (4x4, Cells: 16) By Andy Lewicki.
- Hippodrome. Solitaire game using a small board. Author: Doug Chatham. Inventor: Andy Lewicki.
- Hitchhiker Chess. Get your Hitchhiker to the Restaurant at the other End of the Board; inspired by Douglas Adams' books. (Cells: 42) By Dan Troyka.
- Hitchhiker Chess . Get your Hitchhiker to the Restaurant at the other End of the Board; inspired by Douglas Adams' books. By Dan Troyka.
- Hole Chess. Variant on a board of 44 squares with two holes that pieces can be dragged into. (7x10, Cells: 44) By Gary K. Gifford.
- Hole Chess. Variant on a board of 44 squares with two holes that pieces can be dragged into. Author: Peter Aronson. Inventor: Gary K. Gifford.
- Holy War . Variant with 6 by 6 board with four additional corner squares. By Fergus Duniho.
- Holywar. Variant with 6 by 6 board with four additional corner squares. (6x6, Cells: 40) By Fergus Duniho.
- Hopgi . Small-board variant of Chessgi with an L-shaped board, linked pairs of Kings, where all pieces can move like a Mao-hoppers. By Peter Aronson.
- Hopgi. Small-board variant of Chessgi with an L-shaped board, linked pairs of Kings, where all pieces can move like a Mao-hoppers. (7x7, Cells: 43) By Peter Aronson.
- Horus . Game with Royal Falcons where all pieces start off board and most captures return pieces to owner's hand. By Peter Aronson.
- Horus. Game with Royal Falcons where all pieces start off board and most captures return pieces to owner's hand. (7x7, Cells: 44) By Peter Aronson.
- Hourglass Chess. 38-Square board in shape of Hourglass. (7x6, Cells: 38) By Uri Bruck.
- Hourglass Chess . 38-Square board in shape of Hourglass. Author: Uwe Wiedemann. Inventor: Uri Bruck.
- HP Minichess . Small chess variant that could be played against a pocket calculator. Author: Marek14 .
- HP-minichess. Small chess variant that could be played against a pocket calculator. (5x5, Cells: 25) Author: Hans L. Bodlaender.
- Infantry Chess. Small chess variant with short range pieces. (9x9, Cells: 43) By Erez Schatz.
- Infantry Chess . Small chess variant with short range pieces. Author: Uri Bruck. Inventor: Erez Schatz.
- Inside-out chess. With two kings per player and squares with a square inside. (6x6, Cells: 44) By Maarten Bodlaender.
- Interdependent Chess . A 42 square variant in which pieces borrow capturing ability from other pieces. By Fergus Duniho.
- Interdependent Chess. A 42 square variant in which pieces borrow capturing ability from other pieces. By Fergus Duniho.
- Interdependent Chess. A 42 square variant in which pieces borrow capturing ability from other pieces. (6x7, Cells: 42) By Fergus Duniho.
- Interview with Darren Izzard. An interview with the winner of the contest to design a chess variant on a board with 40 squares. Author: Hans L. Bodlaender.
- Interview with Seth McGinnis. Interview with the winner of the contest to design a chess variant on 39 squares. Author: Hans L. Bodlaender.
- Interview with Tony Quintanilla. Interview with the winner of the 41-square Chess Variant Competition. Author: Hans L. Bodlaender.
- Isis and Cam. Two variants based on ancient English universities and the rivers near them. (6x8, Cells: 48) By Charles Gilman.
- Italian Miniature Progressive Chess. 5x5 progressive game as played in Italy. Author: Ed Friedlander.
- Ito Shogi. Missing description (1x31, Cells: 21) By Jonathan H Rutherford.
- Izzard, Darren. An interview with the winner of the contest to design a chess variant on a board with 40 squares. Author: Hans L. Bodlaender.
- Judkin's Shogi. Modern small shogi variant preset. Author: Charles Daniel and Armin Liebhart. Inventor: ? Judkin.
- Judkin's Shogi. Small shogi variant on 6 by 6 board. (6x6, Cells: 36) Author: Hans L. Bodlaender. Inventor: ? Judkin.
- Just a funny board with 40 squares. A board with 40 squares without rules. (Cells: 40) Author: Claude Chaunier.
- Kaos: The Game . Multiplayer game on a 7x7 board. By Robert Peeples.
- Keltic Chess. Adapted orthochess on a 43-square, fidchell-inspired board. (9x7, Cells: 43) By David Jagger.
- King and Queen. Variant on cross-shaped board with 39 squares. (Cells: 39) By Dennis Xay Voong.
- King and Queen . Variant on cross-shaped board with 39 squares. Author: David Howe. Inventor: Dennis Xay Voong.
- Kings and Pawns. Proprietary game on 8 by 7 board with two types of pieces and no capturing. (7x8, Cells: 56) Author: Hans L. Bodlaender.
- Kings and Pawns . Proprietary game on 8 by 7 board with two types of pieces and no capturing. Author: Peter Aronson.
- KingSwap!. A solitaire swap puzzle to escort your lazy King. (5x5, Cells: 25) By Vincent Bugica.
- Kinzoku. Small variant for little ones, is based on Dobutsu but is very different from it. (3x5, Cells: 15) By Lev Grigoriev.
- Knight Court. Mate the knight with three pieces per player on a three by three board. (3x3, Cells: 9) By Jason D. Wittman.
- Knight Court. Mate the knight with three pieces per player on a three by three board. By Jason D. Wittman.
- Knight Court Chess. When you take an opponent's piece, he gets to drop it back on the board. Object: Checkmate knight. Author: Jeremy Gabriel Good. Inventor: Jason D. Wittman.
- Knight-Tac-Toe. Small variant with only kings and knights where you must get three pieces in line in the center of the board. (5x5, Cells: 25) By David Howe.
- Knight-Tac-Toe . Win by placing 3 pieces in a row. By David Howe.
- Knightsbridge . 14 knights against 14 knights on a 7 by 7 board. Author: Uwe Wiedemann.
- Knightsbridge. 14 knights against 14 knights on a 7 by 7 board. (7x7, Cells: 49) Author: David E. Smith.
- Kozeriai. A 5x7 variant of Shogi. (5x7, Cells: 35) By Jan Paerke.
- Krieg. Two player game on a four-by-four board. Article. (4x4, Cells: 16) By Jeff Zeitlin.
- Kylatori Sunset. Small variant combining replacement, custodian and coordination capture. (6x8, Cells: 48) By Tim Stiles.
- Kyoto Shogi. Modern 5x5 Shogi variant where pieces promote and unpromote with every move. Author: Greg Strong.
- L Shaped Chess. 2 player variant with some elements of 4-player ones. (7x7, Cells: 45) By Charles Gilman.
- Ladder Chess. Chess variant on a `skewed' board with 40 squares. (Cells: 40) By Sergey Sirotkin.
- Ladder Chess . Chess variant on a `skewed' board with 40 squares. Author: Uwe Wiedemann. Inventor: Sergey Sirotkin.
- The Last Mourning. On board with 38 squares and Jesters. (Cells: 38) By Lester Jones.
- Leap Chess . Game with manditory captures and other Checkers-like elements on a board of 44 squares. By Ken Franklin.
- Leap Chess. Game with mandatory captures and other Checkers-like elements on a board of 44 squares. (6x8, Cells: 44) By Ken Franklin.
- Lecce's Chess. semi-chess with a big army. (4x8, Cells: 32) By Andrea Perrone.
- Letter Chess. Pieces are a diagram that shows a letter and their movement capabilities. (7x7, Cells: 49) By Ed Pegg Jr..
- Life, the Universe and Everything . 42-square double-move variant with unusual pieces, inspired by Douglas Adams' fiction. Author: Peter Aronson. Inventor: João Pedro Neto.
- Life, the Universe and Everything. 42-square double-move variant with unusual pieces, inspired by Douglas Adams' fiction. (6x7, Cells: 42) By João Pedro Neto.
- Limited Square Chess. A form of Chess with a Limited Supply of Squares; entry of the 38-challenge. (8x8, Cells: 38) By Ralph Betza.
- Limiting Chess. On a 4x8 board, with the objective of capturing all the opponent's pieces. (8x4, Cells: 32) By Sergey Sirotkin.
- Litrof. Variant on 42 squares played with stacks of Icehouse pyramids, where different color pyramids give stacks different powers. (5x8, Cells: 42) By Glenn Overby II.
- Little Dragon Chess. Modern small variant of Xiangqi on board of 41 squares. (5x7, Cells: 41) By Peter Aronson.
- Little Dragon Chess . Modern small variant of Xiangqi on board of 41 squares. By Peter Aronson.
- Little Trio. Small variant combining Chess, Shogi, and Xiang-Qi. (7x7, Cells: 49) By Jared B. McComb.
- Little Trio. Missing description Author: Nick Wolff. Inventor: Jared B. McComb.
- Loonybird. Pieces on a seven by seven board move differently when they take. Author: John Smith. Inventor: Christian Freeling.
- Loonybird. Pieces on a seven by seven board move differently when they take. (7x7, Cells: 49) By Christian Freeling.
- Loonybird. Pieces on a seven by seven board move differently when they take. Author: Ed Friedlander. Inventor: Christian Freeling.
- Los Alamos Chess. Used for the first computer chess program. Author: Ed Friedlander.
- Los Alamos Chess. First known variant played by a computer. (Recognized!) Author: Jason Shields.
- Los Alamos Chess . Chess on a 6x6 board. Author: David Howe.
- Los Alamos Chess. Play the first variant ever programmed for computer play on Jocly. Author: Michel Gutierrez and Jérôme Choain. Inventor: Paul Stein and Mark Wells.
- Los Alamos Extinction Chess With Bunkers. On 6 by 6 board with two additional 2 by 2 bunkers, and extension chess rules. (2x(6x6), Cells: 44) By Doug Chatham.
- Los Alamos Extinction Chess with Bunkers . On 6 by 6 board with two additional bunkers, and extension chess rules. By Doug Chatham.
- Los Alamos variant. Chess on a 6 by 6 board from the early days of computing. (6x6, Cells: 36) (Recognized!) Author: Hans L. Bodlaender.
- Lotus Boards. Configurations for Future Chess Variant Contests.
- Lotus-39. Chess variant on special shaped board with 39 squares. (Cells: 39)
- Magician Chess. Variant on 7 by 7 board with nine holes and magician able to move holes. (7x7, Cells: 40) By Jonathon Whittle.
- Magician Chess . Version using Alfaerie graphics. Author: David Howe. Inventor: Jonathon Whittle.
- Magician Chess . Variant on 7 by 7 board with nine holes and magician able to move holes. Author: Jens Markmann. Inventor: Jonathon Whittle.
- Mallett Chess. Play this small variant known in Zillions as Knights vs Bishops 5x4 on Jocly. Author: Michel Gutierrez and Jérôme Choain. Inventor: Jeff Mallett.
- McGinnis, Seth. Interview with the winner of the contest to design a chess variant on 39 squares. Author: Hans L. Bodlaender.
- Med Chess . Diagonal board game with a mix of traditional, modern and Shogi pieces. Author: Uri Bruck. Inventor: Erez Schatz.
- Med Chess. Diagonal board game with a mix of traditional, modern and Shogi pieces. (8x8, Cells: 44) By Erez Schatz.
- Mercurial Chess . A variant on 42 squares with a satallite board and the rescure of captured pieces. Author: Peter Aronson. Inventor: Mark Hedden.
- Mercurial Chess. A variant on 42 squares with a satallite board and the rescue of captured pieces. (6x6, Cells: 42) By Mark Hedden.
- Micro 4x5 Chess. Play this miniature Chess variant on Jocly. Inventor: Dan Edje Gustav Glimne.
- Microshogi. Small shogi variant on a 4 by 5 board. (4x5, Cells: 20) Author: Hans L. Bodlaender. Inventor: Oyama Yasuharu.
- Microshogi . Small shogi variant on a 4 by 5 board. Inventor: Oyama Yasuharu.
- Mini Burmese Chess . Small variant of Burmese Chess. By A.J. Winkelspecht.
- Mini Burmese Chess. Small variant of Burmese Chess. (6x6, Cells: 40) By A.J. Winkelspecht.
- Mini Chess. Play Martin Gardner's 5x5 Mini Chess on Jocly. Author: Michel Gutierrez and Jérôme Choain. Inventor: Martin Gardner.
- Mini Chess 4x4. Play this miniature Chess variant on Jocly. Author: Michel Gutierrez and Jérôme Choain. Inventor: David Silverman.
- Mini Fivequarters. The Fivequarters approach to 4-player variants, applied to 6x6 variants. (9x9, Cells: 45) By Charles Gilman.
- Mini four player chess. Missing description (8x8, Cells: 48) By Daniil Frolov.
- Mini Hexchess. McCooey's Hexagonal Chess on smaller board. Author: Abdul-Rahman Sibahi. Inventor: Dave McCooey.
- Mini HexChess. Small hexagonal chess variant. (Cells: 37) By Dave McCooey.
- Mini Shogi. Play this smallest of Japanese Shogi variants on Jocly. Author: H. G. Muller. Inventor: Shigenobu Kusumo.
- Mini Slanted Escalator Chess. Chess on smaller asymmetric board. (8x6, Cells: 44) Author: Hans L. Bodlaender and David Short. Inventor: David Short.
- Mini Slanted Escalator Chess . Chess on smaller asymmetric board. Author: Peter Aronson. Inventor: David Short.
- Mini Thunder Chess. A small-scale hybrid of Metamorph Chess, Fusion Chess, and Assimilation Chess. By Fergus Duniho.
- Mini Thunder Chess . A small-scale hybrid of Metamorph Chess, Fusion Chess, and Assimilation Chess. By Fergus Duniho.
- Mini Thunder Chess. A small-scale hybrid of Metamorph Chess, Fusion Chess, and Assimilation Chess. (6x7, Cells: 42) By Fergus Duniho.
- Mini-Shogi. Missing description Author: Ed Friedlander.
- Miniature Chess. The smallest variant in which every legal move can be made as in FIDE Chess. Author: Jason Shields. Inventor: Martin Gardner.
- Miniature Chess. From an old Martin Gardner column in "Scientific American". Author: Ed Friedlander. Inventor: Martin Gardner.
- Minima. johnnyluken. (6x6, Cells: 64) By Johnny Luken.
- Minishogi. On a 5 by 5 board. (5x5, Cells: 25) (Recognized!) Author: Hans L. Bodlaender. Inventor: Shigenobu Kusumo.
- Minishogi Gold and Silver / 5五将棋 金銀. Super-aggressive version of Minishogi on a 5x5 board. (5x5, Cells: 25) By Вадря Покштя.
- Minishogi setuper. Minishogi you can set up pieces at beginning of the game. (5x5, Cells: 25) By (zzo38) A. Black.
- Minixiang. Xiang Qi's short-range pieces come into their own on a small board. (5x6, Cells: 30) By Charles Gilman.
- MiniXiangqi. S. Kusumoto's MiniXiangqi - Chinese Chess on a 7x7 board (with zrf). By M Winther.
- Mischia. A small 6x6 chess variant that plays like normal chess. (6x6, Cells: 36) By William Wragg.
- Monarch Hexagonal Chess. Proprietary hexagonal variant. Author: Ed Friedlander. Inventor: Jean de Poel.
- Monkey King Chess. Monkey King fights Goblin King on 44 squares board in game with oriental influences. Author: Peter Aronson. Inventor: Peter Gelman.
- Mono-dimensional Chess . Small, one dimensional variant with unorthodox pieces. Author: Glenn Overby II. Inventor: Luiz Carlos Campos.
- Moon Chess . Played with a Xiangqi set, but with different rules. Author: Peter Aronson.
- More 10. Chessvariant on a board with 10 squares. Author: Tony Quintanilla. Inventor: Roberto Lavieri.
- More10. Chessvariant on a board with 10 squares. (2x5, Cells: 10) By Roberto Lavieri.
- More10 . Chessvariant on a board with 10 squares. By Roberto Lavieri.
- Motorotor. Play this small variant with a rotating board. Author: Fergus Duniho. Inventor: Gavin King.
- Motorotor. Variant where two platforms slowly orbit a central board. (11x11, Cells: 43) By Gavin King.
- Mulligan Stew Chess . 42-Square Swapping-Mage Teleporting-Assassin Dual-Color-Bound-King Limited-Double-Move Leaping-Pawn Chess. By Peter Aronson.
- Mulligan Stew Chess. 42-Square Swapping-Mage Teleporting-Assassin Dual-Color-Bound-King Limited-Double-Move Leaping-Pawn Chess. (6x7, Cells: 42) By Peter Aronson.
- My38 Chess. Variant on board with 38 squares. (Cells: 38)
- Nana-Shogi. Shogi variant on a tiny board. By Georg Dunkel.
- Narnia Chess . Chess, played on both the outside and inside of a social ball, with the Pentagons as "gateways" between the two. By David Cannon.
- Narnia Chess. Chess played on both the outside and inside of a soccer ball. (Cells: 52) By David Cannon.
- Narrow Chess . Variant on 2 by 20 board. Author: Marek14 . Inventor: Peter Aronson.
- Narrow Chess. Variant on 2 by 20 board. (2x20, Cells: 40) By Peter Aronson.
- Neighbors. Try to capture the most pieces on a 42-square board completely filled with neutral pieces. (7x6, Cells: 42) By Rob Nierse.
- Neighbors . Try to capture the most pieces on a 42-square board completely filled with neutral pieces. Author: Peter Aronson. Inventor: Rob Nierse.
- Neohex. Chess variant on irregular hexagons. (Cells: 60) By Max Koval.
- Neutron 45. Variant of the game Neutron on a 45-squared board. (7x7, Cells: 45) By Joost Aan de Brugh.
- Neutron 45 ZRF . Variant of the game Neutron on a 45-squared board. By Joost Aan de Brugh.
- Ninjutsu (Claustrophobia 2). Win by invading palace or checkmate; new leaping pieces promote to gain more power. By Charles Daniel.
- Not a chess variant. Rules of a chess variant on a board with 41 squares. (7x7, Cells: 41) By Alexandre Muñiz.
- Notchess. A family of games with Chess and Chess-Variant pieces but no King. () By Charles Gilman.
- Oblique . Variant with board with 40 squares turned 45 degrees. By Tony Quintanilla.
- Oblique. Variant with board with 40 squares turned 45 degrees. (Cells: 40) By Tony Quintanilla.
- Oblong Chess 44 . Missing description By Erez Schatz.
- Oblong Chess 44. Variant of Oblong Chess on board with 44 squares. (4x11, Cells: 44) By Erez Schatz.
- Omnichess. Omnichess - Create and play chess variants. 2-8 players. Square, Hexagonal, Triangular board types. By ch1gz .
- Omnigon. Photos and Review of commercial variant. Author: Ben Good. Inventor: Mike Flynn.
- Once More, with Deans. Subvariants of River-with-university-and-cathedral series with extra piece type. By Charles Gilman.
- The One Ring . White wants to get the Ring to the far side and destroy it. By Robert Price.
- The One Ring. White wants to get the Ring to the far side and destroy it. (5x8, Cells: 42) By Robert Price.
- The One Ring 1. Sample Game #1. Author: Robert Price.
- The One Ring 2. Sample Game #2. Author: Robert Price.
- The One Ring 3. Sample Game #3. Author: Robert Price.
- Onitama. Cards decide how pieces move, perfect information with no chance beyond setup. Author: Mikk . Inventor: Shimpei Sato.
- Outer Space Chess. Space-themed game with hyperspace and regular space boards. (2x(5x8), Cells: 43) By Nicholas Kuschinski.
- Pachessi. Race and chess game on board formed by removing 3 by 3 square from center of 7 by 7 square. (7x7, Cells: 40) By Peter Aronson.
- Pachessi . Race and chess game on board formed by removing 3 by 3 square from center of 7 by 7 square. By Peter Aronson.
- Palace Revolution. Variant on 44 square board with Templar Knights and Squire Pawns. (7x8, Cells: 44) Author: Peter E. Leyva. Inventor: Peter E. Leyva.
- Palace Revolution. Play this 44 square variant with Templar Knights and Squire Pawns with Game Courier. Author: Jeff Rients. Inventor: Peter E. Leyva.
- Panal: a hexagonal chess . A double-royal piece variant on a 61-hex board. By Glenn Overby II.
- Panal: a hexagonal chess. A double-royal piece variant on a 61-hex board. (Cells: 61) By Glenn Overby II.
- Patricia. On a 5 by 5 board, with drops and changing pieces. (5x5, Cells: 25) Author: Hans L. Bodlaender and Rob Nierse. Inventor: Rob Nierse.
- Patricia. Construct a stalemate puzzle. Author: Hans L. Bodlaender. Inventor: Rob Nierse.
- Pawn Less Chess. New pieces, no pawns, and 20 squares removed from the 8 by 8 board. (8x8, Cells: 44) By Uri Bruck.
- Pawn Less Chess . Different pieces, no pawns, and 20 squares removed from the 8 by 8 board. By Uri Bruck.
- Peng Hu rules. Rules for half-board Xiangqi. (8x4, Cells: 32)
- Penthouse. Game like Chess and Makruk but on the half of chessboard with drops and full chess set used. (4x8, Cells: 32) By Lev Grigoriev.
- Petite Chess. Chess on a 5 by 6 board. Author: Ed Friedlander. Inventor: B. Walker Watson.
- Petty Chess. Chess on a 5 by 6 board. (5x6, Cells: 30) Author: Hans L. Bodlaender. Inventor: B. Walker Watson.
- Petty Chess . Chess on a 5 by 6 board. Author: Marek14 . Inventor: B. Walker Watson.
- Philosopher's Chess. The Philosopher's Chess in the Game Courier. Author: Abdul-Rahman Sibahi. Inventor: Darren Izzard.
- Philosopher's Chess. Winner of the 40 squares contest. Author: Ed Friedlander. Inventor: Darren Izzard.
- Philosophers Chess. Chess variant on two small boards with usual and `philosophical' pieces. (6x6, Cells: 40) By Darren Izzard.
- Philosophers Chess . Chess variant on two small boards with usual and `philosophical' piece. Author: Fergus Duniho and Jens Markmann. Inventor: Darren Izzard.
- Philosophers Chess. Photo's of 40 squares chess variant. Author: Fergus Duniho. Inventor: Darren Izzard.
- Pink Panther Chess. Possess the Pink Panther diamond give your piece extra moves. (7x7, Cells: 49) By Charles Gilman.
- Pirate Chess. Two or three pirates fight on a board with 39 triangles. (Cells: 39) By Guillermo Alcántara.
- PiRaTeKnIcS. Pirates on ships fight each other in 44-squares chess variant. (6x8, Cells: 44) By David Jagger.
- PiRaTeKnIcS. Play this 44-squares chess variant in which pirates on ships fight each other on Game Courier. Author: Peter Aronson. Inventor: David Jagger.
- Pirates-Henge-Ho. Small variant with pirates theme. (5x7, Cells: 38) By R Stephen Chafe.
- Pixelpusher variant: Chess on a board with 37 squares. Java applet for chess variant on a 37-square board. Author: Hans L. Bodlaender. Inventor: Alfred Pfeiffer.
- Pixelpusher: Los Alamos chess. Weak playing Java applet for Los Alamos chess.
- Pocket Polypiece Chess. Play Pocket Polypiece Chess online with Game Courier. Author: Antoine Fourrière and Fergus Duniho. Inventor: Antoine Fourrière.
- Pocket Polypiece Chess 43 . Game with off-board pocket where all pieces of a type change when one piece of a type is moved normally. By Antoine Fourrière.
- Pocket Polypiece Chess 43. Game with off-board pocket where all pieces of a type change when one piece of a type is moved normally. (7x6, Cells: 43) By Antoine Fourrière.
- Pompeii Chess. Variant on board with 25 squares. (7x7, Cells: 25) By Dan Troyka.
- Pompeii Chess. Small variant with piece drops, orthogonal pawn moves and one each of all the FIDE pieces. Author: Jeremy Gabriel Good. Inventor: Dan Troyka.
- Pompeii Chess . Variant on board with 25 squares. By Dan Troyka.
- Power Chess 1998. Taken pieces can reenter. (5x7, Cells: 39) By Ronald Hoekstra.
- Prison Break. Starring the sliding pawns, the Ninja Guards, the Knight, the Bird, the King and introducing the captivating Ice Queen! (6x8, Cells: 46) By Charles Daniel.
- Prison Break. Checkmate the enemy king or break out of prison with your king! By Charles Daniel.
- Prisoner's Escape . Free your Prisoner by getting it to an unattacked square -- a small board version of Anticheckmate Chess. By Peter Aronson.
- Prisoner's Escape. Free your Prisoner by getting it to an unattacked square -- a small board version of Anticheckmate Chess. (7x8, Cells: 44) By Peter Aronson.
- Puzzle Shatranj. Shatranj on a 15 puzzle. (8x8, Cells: 60) By John Smith.
- Quad-Square Chess. Chess on a board of 38 squares, of which six have size two by two. (7x8, Cells: 38) By David Howe.
- Quad-Square Chess . Chess on a board of 38 squares, of which six have size two by two. Author: Robert Price. Inventor: David Howe.
- Quake Chess. Earthquakes over the board. (8x6, Cells: 46) By Abdul-Rahman Sibahi.
- Quake Chess. Quake Chess on the Game Courier. By Abdul-Rahman Sibahi.
- Quarterboard. Small variant with no pawns and piece drops, inspired by Chess and Shogi. By Milan Zeiske.
- Quick Chess. Chess on a 5 by 6 board. (5x6, Cells: 30) Author: Richard Sullivan. Inventor: Joe Miccio.
- Quintanilla, Tony. Interview with the winner of the 41-square Chess Variant Competition. Author: Hans L. Bodlaender.
- Re. Drop pieces on a 5 by 5 board. By (zzo38) A. Black.
- Re. Drop pieces on a 5 by 5 board. (5x5, Cells: 25) Author: Hans L. Bodlaender. Inventor: Reiner Knizia.
- Reality check. Remember the opposite site of flippable pieces. (Cells: 39) By Andrew Juell.
- Redistribution 3d Chess. Relatively small 3d variant with short-range pieces including Pasha family. (4x(4x6), Cells: 96) By Charles Gilman.
- Reenterent Chess. There is one additional square where taken pieces can wait to reenter 5 by 8 main area. (5x8, Cells: 41) By Edward Lovett.
- Reenterent Chess . There is one additional square where taken pieces can wait to reenter 5 by 8 main area. Author: Peter Aronson. Inventor: Edward Lovett.
- Reenterent Chess - prototype board. Missing description By Edward Lovett.
- Reform chess. Book on chess on smaller boards with many training positions. Author: Laszlo Polgar.
- Regenbogen . Unusual spectrum-based game with Wizards, Clerics and Spirits. Author: Joost Aan de Brugh. Inventor: Jared B. McComb.
- Regulator Chess. Game on a 35 square board with a 7 square track on which a piece moves that determines how Knights and Bishops can move. (6x7, Cells: 42) By Samuel H. Bell.
- Regulator Chess . Game on a 35 square board with a 7 square track on which a piece moves that determines how Knights and Bishops can move. Author: Peter Aronson. Inventor: Samuel H. Bell.
- Report on 41-square Chess Variant Competition. Missing description Author: David B. Pritchard.
- Review: Omnigon. Photos and Review of commercial variant. Author: Ben Good. Inventor: Mike Flynn.
- Revolver Practice: A Chess Problem. White mates in 21 moves on board in shape of revolver. Author: Hans L. Bodlaender. Inventor: T. R. Dawson.
- Robber-Baron . Which of the seven robbers is the robber-baron? Author: David Howe. Inventor: Seth McGinnis.
- Robber-Baron. Which of the seven robbers is the robber-baron? (7x7, Cells: 39) By Seth McGinnis.
- Rollerball. Play this game based on a science fiction sport on Jocly. Author: Michel Gutierrez and Jérôme Choain. Inventor: Jean-Louis Cazaux.
- Rollerball . Chess race fight on board formed by removing 3 by 3 square from center of 7 by 7 square. By Jean-Louis Cazaux.
- Rollerball. Chess race fight on board formed by removing 3 by 3 square from center of 7 by 7 square. (7x7, Cells: 40) By Jean-Louis Cazaux.
- Rollerball. Chess race fight on board formed by removing 3 by 3 square from center of 7 by 7 square. Author: Antoine Fourrière. Inventor: Jean-Louis Cazaux.
- Rook Mania. Game where all pieces have different sorts of Rook-like moves. (7x7, Cells: 43) By Jared B. McComb.
- The Royal Standard. Pieces can only move when near a standard-bearer piece on board with 38 squares. (7x6, Cells: 38) By Alexandre Muñiz.
- Saisho shogi. Game with one dice-shaped shared piece. By Francesco Fonseca.
- Sankaku Shogi . Small Shogi variant played on a board of 44 triangles with no drops and a teleporting Emperor. By Larry L. Smith.
- Sankaku Shogi. Small Shogi variant played on a board of 44 triangles with no drops and a teleporting Emperor. (7x8, Cells: 44) By Larry L. Smith.
- Semedo. Missing description (5x8, Cells: 40) Author: Daniil Frolov.
- SerPent Chess 50. Pentagonal cells form hexagonal blocks in two ways. (Cells: 50) By Charles Gilman.
- Shakti. Christian Freeling's simple, elegant game with disappearing squares. Author: Ed Friedlander. Inventor: Christian Freeling.
- Shakti. On a 7 by 7 board with disappearing squares. (7x7, Cells: 49) By Christian Freeling.
- Shifting Sands Chess. Special squares -- which can be dropped and moved -- change the types of pieces that land on them. (6x7, Cells: 42) By Tony Quintanilla.
- Shifting Sands Chess . Special squares -- which can be dropped and moved -- change the types of pieces that land on them. By Tony Quintanilla.