Check out Makruk (Thai Chess), our featured variant for March, 2025.

The Interactive Diagram Tag

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AIGO Chess. International chess with Cannon pieces added. (8x8, Cells: 64) (1)
Airplane Chess. Schmittberger's big-board variant featuring the very mobile Airplane (with zrf). (1)
Ajax Chess. All pieces have can play one square in any direction, the Mastodon leaper complements the Knight. (10x10, Cells: 100) (1)
Alibabante Chess II. Game with Alibabantes. (10x10, Cells: 100) (1)
All the Way Chess. Pieces must move as far as they can when moved. (8x8, Cells: 64) (1)
Alpaca Chess. Introducing the weak but interesting Alpaca, which hops one or two steps rookwise (with zrf). (1)
Amalgamated Chess. Incorporates some aspects of historical variants, but uses only usual equipment. (8x8, Cells: 64) (1)
Amazon Chess. Queen may also move as a knight. (8x8, Cells: 64) (1)
Apothecary Chess-Classic. Large board variant obtained through tinkering with known games. (1)
Apothecary Chess-Modern. Large board variant obtained through tinkering with known games. (1)
Arch-Chancellor Chess. Uses Archbishops instead of Bishops and Chancellors instead of Knights. (8x8, Cells: 64) (1)
ArchCourier Chess. This game is Courier Chess expert Eric Greenwood's modernization of Courier Chess. (12x8, Cells: 96) (1)
Archchess. Large chess variant from 17th century Italy. (10x10, Cells: 100) (1)
Arktur. Two kings and randomized setup. (8x8, Cells: 64) (1)
Ascension. 6x6 board with two Kings that promote to royal Queens. (1)
Asylum Chess. 3 new unique pieces: fire-through rooks, double-capture knights, leaping bishops. (10x10, Cells: 100) (1)
Asymmetric Chess. Chess with alternative units but classical types and mechanics. (8x8, Cells: 64) (1)
Aviation Chess. Legan's Aviation Chess, popular during WWI, featuring the Aviator piece (with zrf). (1)
Azchess. Missing description (10x10, Cells: 100) (1)
Bachelor Chess. Win by mating your opponent, or marrying off your King. (7x6, Cells: 42) (1)
Balaklava Chess. Many pieces have additional knight moves. (8x8, Cells: 64) (1)
Balbo's chess. Board with a strange shape designed to make Bishops stronger in relation to Rooks. (Cells: 68) (1)
Banner Xiangqi. Xiangqi with Banners (from the Game of Three Kingdoms) and simplified endgame rules. (1)
Basic Bestiary. Like Wildeurasian Bestiary but without the Hopping-capture pieces. (13x12, Cells: 156) (1)
Bastille Chess. Win by clearing your opponent's fortress. (8x8, Cells: 64) (1)
Battery Chess. Chess on a Battery shaped board, with lots of batteries. (5x10, Cells: 46) (1)
Bear Chess. A popular Russian game; bears leap to second perimeter. (1)
Beast Chess. Replace conventional pieces with those that look like animals. (8x8, Cells: 64) (1)
Beastmaster Chess. Large chess variant with a fantasy theme, emphasizing leaping pieces. (8x11, Cells: 84) (1)
Besiege Chess. Double height chess board, where black is surrounded by white. (8x16, Cells: 128) (1)
Big Chess. Chess variant on a 14 by 8 square board with extra Pawns, Knights and Bishops. (14x8, Cells: 112) (1)
Big Outer Chess. Large variant with concentric circles on the board, so there is less concentration on the centre. (12x12, Cells: 148) (1)
The Black Ghost. Black gets a teleporting Ghost piece that can not capture to balance White's first move advantage. (8x8, Cells: 64) (1)
Black Hole Chess. Variant on board with 100 squares with hole in middle of board, combination pieces and hiding squares for kings. (9x11, Cells: 100) (1)
Bland Chess 46. Orthogonal moves only on a board with 46 squares. (6x8, Cells: 46) (1)
Blue Chip Chess. A chip, moved each turn by the players, denotes a square where pieces may not go to. (8x8, Cells: 64) (1)
Bombardier Chess. Introducing the Bombardier, combining a rook with a camelrider (zrf exists). (1)
Bottleneck Chess. Most pieces start the game locked up in two bottleneck parts of the board. (Cells: 41) (1)
Bovine Chess. chess variant to illustrate new alternative notation for fairy pieces. (1)
Brett Rules. Different mobility of queens, rooks, and bishops and a different winning condition. (8x8, Cells: 64) (1)
Brickchucking Chess. Pieces cannot move backwards, but do give check/mate backwards. (1)
The Bridge41. 41 square board with bridge in the middle. (5x9, Cells: 41) (1)
Brigadier Chess. Introducing the powerful Brigadier piece on a 68-square Gustavian board. (1)
Brotherhood Chess. Pieces cannot take pieces of the same type. (8x8, Cells: 64) (1)
Brouhaha. Like Chess, but it really brings the ruckus! (8x8, Cells: 72) (1)
Buccaneer Chess. Introducing the Buccaneer and the bounce-move, whereby the piece bounces diagonally away from its course (zrf available). (1)
Cagliostro's Chess. Variant on 12 by 8 board with combination pieces. (12x8, Cells: 96) (1)
Camelopard Chess. Game with Camelopards. (12x12, Cells: 144) (1)
Camelrider Chess. P. Aronson's big-board variant with regular pieces and Camelriders. (1)
Cannonrider Chess. The Cannonrider moves differently depending on square colour: on white squares as a Nightrider; else as a Chinese Cannon. (1)
Cannons and Crabs. A variant on a 7x6 board with Crabs (improved Pawns), and Cannons (leapers). (7x6, Cells: 42) (1)
Canoness Chess. Chess with Cannons and Canonesses (Vaos) on a differently-shaped board. (10x10, Cells: 88) (1)
Capablanca Random Chess. Randomized setup for Capablanca chess. (10x8, Cells: 80) (1)
Capped Pawns (Bemützte Bauern). Pawns have a double step once in their career. (1)
Captain's Chess. Missing description (9x8, Cells: 72) (1)
Capture the Scepter. Checkmate the king or capture the scepter located on opposing king's home square. Features extra-mobile sliding pawns. (8x8, Cells: 64) (1)
Cardinal Chess. Just like orthodox Western "Mad Queen" Chess only substituting knight-bishop compound for Mad Queen. (8x8, Cells: 64) (1)
Cavalier Chess. All pieces except queens have some kind of knight-movement. (8x8, Cells: 64) (1)
Cavalry Chess. A once popular variant from the 1920's where every piece has additional jumping moves. (8x8, Cells: 64) (1)
Caïssa Britannia. British themed variant with Lions, Unicorns, Dragons, Anglican Bishops, and a royal Queen. (10x10, Cells: 100) (1)
Centaur Chess. Pieces move backwards as Knight. (8x8, Cells: 64) (1)
Centennial Chess. 10x10 Variant that adds Camels, Stewards, Rotating Spearmen and Murray Lions to the standard mix. (10x10, Cells: 100) (1)
Center of Attention. In addition to regular rules, win by moving your King to a center square. (8x8, Cells: 64) (1)
Central Point Chess. Small 7x7 game with different pieces. (1)
Cetina Random Chess. Play with a sissa and a chancellor from a randomly generated setup. (1)
Cetran Chess 2. Missing description (8x8, Cells: 64) (1)
Chak. A modern vision of what a Mayan chess would look like. (1)
Chess. The most popular of Chess variants, Chess itself. (8x8, Cells: 64) (1)
Chess II. Two extra files with two additional pieces (princes) on each side. (10x8, Cells: 80) (1)
Chess and a Half. Game with extra leapers. (1)
Chess on a Really Big Board. Chess on multiple chess boards. (16x16, Cells: 256) (1)
Chess with Different Armies. Betza's classic variant where white and black play with different sets of pieces. (Recognized!) (1)
Chu Shogi. Historic Japanese favorite, featuring a multi-capturing Lion. (12x12, Cells: 144) (Recognized!) (1)
Citadel. Simple chess variant from early 20th century on 45 degrees turned board. (8x8, Cells: 64) (1)
Citadel - 8 & 9 rank - Broadly based on Tamerlane Chess. Missing description (9x8, Cells: 72) (1)
Citadelir chess. Grand chess + Tamerlane chess + Omega Chess. (1)
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) (1)
Clear of knights chess. Missing description (8x8, Cells: 64) (1)
Colossus. Large-board chess with standard pieces and double the number of bishops, rooks and knights. (10x10, Cells: 100) (1)
Complex War Chess. Missing description (10x10, Cells: 100) (1)
The Consuls. Chess with two Kings and Pawns that can capture as Bishop, Knight, and Rook on the enemy side. (1)
Courier 'de la Dama'. Courier Chess with a Modern Queen and other changes for more dynamic play. (12x8, Cells: 96) (1)
Courier Chess. A large historic variant from Medieval Europe. (12x8, Cells: 96) (Recognized!) (1)
The Crab: ffNbsN. Missing description (1)
Crooked Board Chess. Variant on a board of standard size but odd shape. (8x12, Cells: 64) (1)
Cross Chess. Game played on a cross-shaped board. (Cells: 64) (1)
Cross-Eyed Chess. Two player variant on cross-shaped board. (12x12, Cells: 84) (1)
Crossbishop Chess. Introducing the Crossbishop piece, with interesting cannon capabilities (Zillions file downloadable). (1)
Crossbishop_Chess (8x10). A big-board variant featuring the new Crossbishop piece, an advanced cannon relative (Zillions file downloadable). (1)
Crossover Chess. Two player variant with crossshaped board. (12x12, Cells: 64) (1)
Crossrook Chess. Introducing the Crossrook, a versatile piece with cannon capabilities (Zillions file downloadable). (1)
Crouching Stepper, Hidden Rider. Xiang Qi pieces' moves lengthen and shorten with location. (9x10, Cells: 90) (1)
Crown Prince Chess. One Knight on each side is replaced by a Crown Prince. (8x8, Cells: 64) (1)
Cuarenta. Played only of the light-colored squares of a 9 by 9 board. (1)
Cutty Camels. Army for Chess with Different Armies that features Wizard from Omega Chess. (8x8, Cells: 64) (1)
Cylindrical Chess. Sides of the board are supposed to be connected. (8x8, Cells: 64) (1)
Dabbabante Chess.. Played on a 10x10 board with Super Dabbabah pieces. (10x10, Cells: 100) (1)
Dai Shogi. Large armies including a multi-capturing Lion battle each other on a big board. (15x15, Cells: 225) (1)
Decimaka. Game where pieces promote on making a capture. (1)
Delegating Chess. 84 square variant in which pieces delegate moving powers. (7x12, Cells: 84) (1)
Demi chess. Chess on a 4 by 8 board. (4x8, Cells: 32) (1)
The Demon Game. Missing description (10x10, Cells: 100) (1)
Dervish Chess. Large variant with a great variety of pieces. (11x11, Cells: 121) (1)
Desert Dust. Large variant with Arabian-themed pieces. (12x12, Cells: 144) (1)
Desert Pub Chess. A game where Desert Wazirs & Desert Ferz capture by jumping. (8x8, Cells: 64) (1)
Diagonal pawn chess. Pawns always move diagonally, whether capturing or not. (1)
Diamond Chess (40). Chess variant on diamond shaped board with 40 squares. (Cells: 40) (1)
Dimachaer Chess. Introducing the Dimachaer, a bifurcation piece that always lands on the diagonal second leg (zrf available). (1)
Dipole Chess. A cross between Chess and the game Dipole by Mark Steere. (8x8, Cells: 64) (1)
Displacement Chess 2. The most logical step for the evolution of standard Chess: flexible castling and interchange of king and queen for one side. (8x8, Cells: 64) (1)
Divergent Chess. All pieces capture different than they move without capturing. (10x10, Cells: 100) (1)
Divided Forces Chess. Half of your army starts on the other side of the board. (8x8, Cells: 64) (1)
Doublebarrel Chess. Introducing the Doublebarrel piece, a lethal cannon relative with amazing tactical capabilities (Zillions file downloadable). (1)
Doublecannon Chess. Introducing the Doublecannon piece, a strong cannon relative with breathtaking tactical capabilities (Zillions file exists). (1)
Doublecannon-Chess (8x10). A big-board variant featuring the amazing new piece, the Doublecannon (Zillions file downloadable). (1)
Doublestep Chess and Doubletime Chess. Missing description (8x8, Cells: 64) (1)
Douglas Modern chess. A chess variant with a more interesting start position, leading to more action. (1)
Dream Chess 46. 46-squasre variant played from opposite corners of a FIDE board with the other corners removed. (8x8, Cells: 46) (1)
Dream Chess 47. 47-square variant played from opposite corners of a 7 by 7 board with the other corners removed. (7x7, Cells: 47) (1)
Dromedary Chess. Pieces adjacent to the King can leap like a Dromedary (Camel). (1)
Duck Chess. A Duck that must be moved by both players can block your moves. (8x8, Cells: 64) (1)
The Duke of Rutland's Chess. Large variant from 18th century England. (14x10, Cells: 140) (1)
Dunsany's Chess. 32 pawns play against a full set of pieces. (1)
Dutch Chess. Different objective and piece movements with orthodox chess set. (8x8, Cells: 64) (1)
Dynasty Chess. Missing description (8x8, Cells: 64) (1)
Edgehog Chess. Three Chess variants featuring John Driver's edge-loving piece the Edgehog. (8x8, Cells: 64) (1)
Eight Kings. Each player has eight kings and wins by mate or stalemate one of the kings. (8x8, Cells: 64) (1)
Elbow Room. Usual set of pieces and eight additional pawns per player on 8 by 16 board. (16x8, Cells: 128) (1)
Elena Chess. Chess on 5 by 6 board. (5x6, Cells: 30) (1)
Elk Chess. The double-barrelled Elk moves differently depending on square colour. (1)
Elkrider Chess. Elkrider plus regular pieces. The Elkrider moves like a Nightrider if standing on white squares, otherwise it moves like a Rook. (1)
Elven Chess. 10x10 variant with 4 new pieces, of which one can double-capture. (10x10, Cells: 100) (1)
Embassy Chess. A 10x8 variant based on Grand Chess. (10x8, Cells: 80) (1)
Emperor Chess. Large chess variant with a Commander (Queen + Knight), two Queens, and two Emperors (Bishop + Lame Dabbabah-rider) per side. (12x12, Cells: 144) (1)
The Emperor's Game. Variant on 10 by 10 board from 19th century Germany. (10x10, Cells: 100) (1)
Empire Chess. Asymmetric variant where one army has pieces that move like queens but capture differently. (1)
Enep. An experimental variant with enhanced knights and an extra pawn. (8x8, Cells: 64) (1)
Energizer Chess. Chess on a normal board with an Archbishop and a Chancellor added. (8x8, Cells: 64) (1)
Enhanced Courier Chess. Courier Chess with the weaker pieces enhanced. (1)
Epic Chess. Massive attack chess on a board 10x10. (1)
Eric's Great chess. Modern variant on historic large chess variant. (10x8, Cells: 80) (1)
Euchess. Grand chess variant on 10 by 10 board. (10x10, Cells: 100) (1)
Eurasian Chess. Synthesis of European and Asian forms of Chess. (10x10, Cells: 100) (1)
Europan Chess. A 14x14 board with extra pieces. (14x14, Cells: 196) (1)
Evolution Chess. Game where pieces add the abilities of pieces they capture. (8x8, Cells: 64) (1)
Evolution Chess-42. 42-square game where each player starts with 20 Knights that evolve and a King. (7x6, Cells: 42) (1)
Exinox Chess. Normal chess set, new type of pieces. (8x8, Cells: 64) (1)
Expanded Chess. An attempt at a logical expansion of Chess to a 10x10 board. (1)
Extended Half-chess. Variant on 4 by 10 board. (4x10, Cells: 40) (1)
Falcon Chess. Game on an 8x10 board with a new piece: The Falcon. (10x8, Cells: 80) (1)
Fantastic XIII. A bizarre large odd chess variant with the weirdest men from Cazaux's family. (1)
Fantasy Grand Chess. Variant of Grand Chess with different armies and fantasy theme. (10x10, Cells: 100) (1)
Fighting Kings. The King has switched places with the King Pawn - The King is now a fighting piece. And the pawn must be protected. (8x8, Cells: 64) (1)
Fischer Random Chess. Play from a random setup. (8x8, Cells: 64) (Recognized!) (1)
Fish Chess. Pawns can move backwards without capturing. (8x8, Cells: 64) (1)
Flank Chess. Flank Chess with Achilles. (10x9, Cells: 90) (1)
Flee!. Variant on 16 by 16 board with strong royal piece. (16x16, Cells: 256) (1)
Flying Bombers Grand Chess. The usual pieces in Chess are complimented by two Flying Bombers, which eliminate enemy pieces by flying over them! (10x10, Cells: 100) (1)
Flying Bombers with Hangars. Features the flying bomber - a versatile dual range piece that captures by flying over the enemy. (8x8, Cells: 68) (1)
Four File Chess. Variant on 4 by 10 board. (4x10, Cells: 40) (1)
Frog Chess. Play chess with added frogs (ferz-threeleaper compound) on 10x8 board. (1)
Full Double Chess. 32 pieces each, including all combinations of the basic Chess pieces, on a 16x8 square board. (16x8, Cells: 128) (1)
Gadsden's Toroidal Chess. Edges of the board are considered to be adjacent. (8x8, Cells: 64) (1)
General and Arch-General Chess. Variations of Birds' Chess. (10x8, Cells: 80) (1)
Gigachess II. Evolution of Gigachess (2001). (1)
Goodchess. Missing description (8x8, Cells: 64) (1)
GoshawkChess. Variant of Capablanca Chess with two Goshawks per side replacing the Archbishop and Chancellor. (1)
Gothic Chess. A 10x8 variant using the same rules and equipment as Capablanca's Chess. (10x8, Cells: 80) (1)
Grand Alamos Chess. FIDE, but with an initial setup reminiscent of Grand Chess. (1)
Grand Apothecary Chess-Alert. Very large Board variant obtained trough tinkering with known games. (1)
Grand Apothecary Chess-Classic. Very large Board variant obtained trough tinkering with known games. (1)
Grand Apothecary Chess-Modern. Very large Board variant obtained trough tinkering with known games. (1)
Grand Betza. A tribute to Ralph Betza on a 10x10 board with pawns on the third rank as in Grand Chess. (1)
Grand Cavalier Chess. The decimal version of Cavalier Chess. (10x10, Cells: 100) (1)
Grand Chess. Christian Freeling's popular large chess variant on 10 by 10 board. Rules and links. (10x10, Cells: 100) (Recognized!) (1)
Grand Ducal Chess. Missing description (12x8, Cells: 96) (1)
Grand Shatranj N W. Shatranj with 10 individual pieces + pawns per army. (10x10, Cells: 100) (1)
Grand Tamerlane Chess. John Davis invented this variation of Mideast Chess. (10x10, Cells: 100) (1)
Grand Triple Chess. Chess on an 16 x 24 board (i.e. six boards) with 3 sets of pieces. (24x16, Cells: 384) (1)
Grander Chess. A variant of Christian Freeling's Grand Chess. (10x10, Cells: 100) (1)
Grandkingdom Chess. A decimal variant with several powerful pieces. (10x10, Cells: 100) (1)
Granlem Shatranj. This is a mash-up of Grand Shatranj & Lemurian Shatranj with a 3 moves/player turn option. (1)
Grant Acedrex. Medieval large chess variant according to recent historians's work. (12x12, Cells: 144) (1)
Grasshopper Chess. Each player has eight additional grasshoppers. (1)
Great Herd. Large variant with Camel, Zebra, Bison, Gnu and Gazelle pieces. (10x8, Cells: 80) (1)
Great chess. An Indian/Turkish and very playable historic variant on a 10 by 10 board. (10x10, Cells: 100) (1)
Half Chess (32). On a 4 by 8 board without pawns. (4x8, Cells: 32) (1)
Half Courier. A Pawnless variant rearranging a slightly simplified Courier back rank onto two ranks. (6x8, Cells: 48) (1)
Hammer Chess. Minor pieces have increased movement possibilities. (8x8, Cells: 64) (1)
Hannibal Chess. Chess with added Modern Elephants (ferz-alfil compound) on 10x8 board. (1)
Hans 38Special Chess. On a board with 38 squares. (6x6, Cells: 38) (1)
Hans38 Chess. Eric Greenwood's chess on a board with 38 squares. (6x6, Cells: 38) (1)
Haynie's Game of Leapers. On 8 by 8 board with several pieces that can jump. (8x8, Cells: 64) (1)
Haynie's Oblong Chess 128. Variant on double size chess board. (16x8, Cells: 128) (1)
Haynie's Primary Chess. On 6 by 6 board without knights. (6x6, Cells: 36) (1)
Haynie's high power fairy chess 64. With orthodox chess set but different stronger movements for most pieces. (8x8, Cells: 64) (1)
Heavy Gravity Chess. Chess with heavy gravity, Knights can't jump, Queens, Bishops, and Rooks are limited to 4 spaces per move, Kings move 1 diagonal. (8x8, Cells: 64) (1)
Heavy Shako. 10x10 variant inspired by Yangsi, made by Eric Silverman and Jean-Louis Cazaux. (1)
Hecatomb. Each player has 31 queens and one king. (8x8, Cells: 64) (1)
Hecatomb promotion. Missing description (8x8, Cells: 64) (1)
Hectochess. 10x10 variant that can be played with 2 mismatched Chess sets. (1)
Herb garden chess. Variant on 7 by 12 board with additional combination pieces. (12x7, Cells: 84) (1)
Herculean Chess. 12 x 12 version of chess featuring 4 Rooks, 4 Bishops, 4 Leapers and 22 pawns. (12x12, Cells: 144) (1)
Herd. Experimental variant with jumping pieces on 7 by 7 board. (7x7, Cells: 49) (1)
Hia Chess. Smaller 9x8 variation of the Mongolian Hiashatar. (9x8, Cells: 72) (1)
Hoppel-Poppel. Modest divergent variant where Knights capture like Bishops and Bishops capture like Knights. (8x8, Cells: 64) (1)
Horizons. Game with 5 new pieces on 12x12 board. (12x12, Cells: 144) (1)
Hundred Acre Chess. Chess based on Winnie-the-Pooh. (10x10, Cells: 100) (1)
I-Chess. Large board variant that adds two more piece types: the wolf and the eagle. (1)
Interactive diagrams. Diagrams that interactively show piece moves. (1)
Janus Kamil Chess. A crossover between Janus Chess and Modern Kamil Chess. (12x8, Cells: 96) (1)
Kangaroo Chess. Row of kangaroos behind the pawns behind the pawns. (10x10, Cells: 100) (1)
Knightmate. Win by mating the knight. (8x8, Cells: 64) (1)
Knights Chess. Queen, Rook and Bishop may also jump as a knight. (1)
Leaping/Missing Bat Chess. Large variant on a 16x12 board with many fairy pieces. (16x12, Cells: 192) (1)
Left-Right Chess. A large variant with some pieces that move as a Rook only left or right. (1)
Lions and Unicorns Chess. With the 16 standard pieces and 4 powerful leapers. (10x8, Cells: 80) (1)
Lynx Chess. Razorbill. (12x12, Cells: 144) (1)
Maasai Chess. Large CV with 48 pieces per side, of 20 types including both regular and rapid Pawns. (1)
Makruk (Thai chess). Rules and information. (8x8, Cells: 64) (Recognized!) (1)
Metamachy. Large game with a variety of regular fairy pieces. (1)
Mighty-Lion Chess. Normal Chess augmented with a hard-to-trade Lion super-piece that can make double-captures. (8x8, Cells: 64) (1)
Minjiku Shogi. Wild shogi variant, with pieces that burn neighbors or jump many pieces. (10x10, Cells: 104) (1)
Mischia. A small 6x6 chess variant that plays like normal chess. (6x6, Cells: 36) (1)
Mitsugumi Shogi. Smaller variant of Suzumu Shogi on a 13x13 board. (13x13, Cells: 169) (1)
Octal XiangQi. Missing description (8x8, Cells: 64) (1)
Paco Shako. Pieces coexist peacefully on target square after capture. (1)
Pemba. Extension of Shako, with 60 pieces. (1)
Pink Chess. White has two Kings, black two Queens as royal pieces. (1)
Pirates-Henge-Ho. Small variant with pirates theme. (5x7, Cells: 38) (1)
Play-test applet for chess variants. Applet you can play your own variant against. (1)
Rabbit Chess. Kangaroo Lion. (10x10, Cells: 100) (1)
Raichu Shogi. A variant of Chu Shogi in which capturing a Lion grants you an extra turn. (12x12, Cells: 144) (1)
Reformed Courier-Spiel. Begnis's attempt to reform the Courier-Spiel proposed by H.C. Albers in 1821. (12x8, Cells: 96) (1)
Refusal Chess. Refuse your opponent to make certain moves. (8x8, Cells: 64) (1)
Reiwa Dai Shogi. Variant of Dai Shogi with better piece balancing. (15x15, Cells: 225) (1)
Renniassance Chess. With 68 pieces on board of 12 by 12. (12x10, Cells: 120) (1)
Roman Chess. Commercial chess variant on a 10x10 board with two non-royal kings added. (1)
Ryugi. 10x10 variant with Kirins, Marshalls, and Dragons, the latter which can move as a Bishop or as a Nightrider. (1)
SOHO Chess. Chess on a 10x10 board with Champions, FADs, Wizards & Cannons. (10x10, Cells: 100) (1)
SPQR. The perfect battle formation of Roman infantry. (12x12, Cells: 144) (1)
Sac Chess. Game with 60 pieces. (10x10, Cells: 100) (1)
Sage Chess. Missing description (8x16, Cells: 128) (1)
Samarcanda. Variant of Mideast Chess with Crooked Bishops. (10x10, Cells: 100) (1)
Samnis Chess. Introducing the Samnis, which combines rook-capture with bifurcated bounce-movement, on a Gustavian board (zrf available). (1)
Schachdame. Variant between Checkers and Chess. (8x8, Cells: 64) (1)
Scheherazade. Pieces may combine with other pieces to form combination pieces. (10x10, Cells: 100) (1)
Schoolbook. 8x10 chess with the rook + knight and bishop + knight pieces added. (10x8, Cells: 80) (1)
Scorpion Chess. Poisonous Scorpions instead of pawns. (1)
Scout Chess. Introducing the Scout, combining queen-captures with Camelrider moves (zrf exists). (1)
Shako. Cannons and elephants are added in variant on 10 by 10 board. (10x10, Cells: 100) (1)
Shako_Balbo. Game with Diamond Shape Board. (1)
Shambhala chess. Maybe, it's the misterious first form of chess? Actually, most probably, not. (8x8, Cells: 64) (1)
Shatar, Old 1 Hia. Old Shatar with one Hia. (8x8, Cells: 64) (1)
Shatranj Darwinian. Missing description (9x9, Cells: 81) (1)
Shatranj Kamil (64). Modern Shatranj based variant on 8 by 8 board with new pieces. (8x8, Cells: 64) (1)
Shatranj Kamil I. Large shatranj variant with new piece: camel. (10x10, Cells: 100) (1)
Shatranj Kamil II. Large historic shatranj variant with new piece: dabbabah or war machine. (10x10, Cells: 100) (1)
Shatranj Kamil X. Shatranj Kamil, with new pieces from Jetan, Shogi and Xiangqi. (10x10, Cells: 100) (1)
Shatranj al-Sultan. Normal Chess + Alibaba , with a Sultanic flavour . (10x8, Cells: 80) (1)
Shock Chess. Players are paralyzed from the shock of losing their queen. (8x8, Cells: 64) (1)
Short Leaper Chess. Missing description (8x8, Cells: 64) (1)
Sideways Hourglass chess. Small variant on 6 by 7 board with two squares punched out. (7x6, Cells: 40) (1)
Silver Elephant Chess. Missing description (10x8, Cells: 80) (1)
Simpleton's Chess. This is an even simplier version of Simplified Chess. (7x8, Cells: 56) (1)
Simplified Chess. Missing description (8x7, Cells: 56) (1)
Simplified Makpong. Makruk variant. (1)
Simplified chess. Simple subset of the chess rules. (8x8, Cells: 64) (1)
Sin-yeon-sang-gi (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. (1)
Sino-European Chess. Missing description (9x9, Cells: 81) (1)
Sissa. Variant on 9 by 9 board with Sissa's. (9x9, Cells: 81) (1)
Sissa Squad. Army for Chess with Different Armies that features Knight from Coherent Chess. (8x8, Cells: 64) (1)
Sixteen Pawns. Trade a queen for 8 extra pawn. (8x8, Cells: 64) (1)
Skandaran Chess. Large variant with 32 pieces per side. (12x12, Cells: 144) (1)
Skica. 10x10 with Ski Pieces and Camels. (10x10, Cells: 100) (1)
Skirmish Chess. Tony Paletta Modest proposal as separate link for discussion. (8x8, Cells: 64) (1)
Skirmish56 Chess. This is Skirmish Chess on an Simplified Chess board. (7x8, Cells: 46) (1)
SliderChess. Variant of Capablanca Chess with two extra Bishops per side replacing the Archbishop and Chancellor. (1)
Sloppy Slippers. An army consisting of slip-pieces. (8x8, Cells: 64) (1)
Small-Deacon Chess. Missing description (7x7, Cells: 49) (1)
Smess. Produced and sold in the early 70's by Parker Brothers. Arrows on squares determine direction pieces can move. (7x8, Cells: 56) (Recognized!) (1)
Snake Chess. A variant played on a 2 by 12 cyclindrical board. (2x12, Cells: 24) (1)
Snake vs. Mongoose. White is supplemented by Mongooses, while Black has Snakes. (10x10, Cells: 100) (1)
Snark Hunt. Variant with unequal armies on board with 41 squares, inspired by a poem of Lewis Carroll's. (6x8, Cells: 41) (1)
Spartan Chess 28. Missing description (4x7, Cells: 28) (1)
SquireKnight. Squire Knight combines Knight and Forward/Backward Pawn like moves. (8x8, Cells: 64) (1)
The Starbound Sliders. A Chess With Different Armies team featuring rook-inspired sliders. (1)
Stone Garden Chess. The animal statues in the stone garden came to life and attacked the two rival kings! With the help of a policeman each, they…. (8x8, Cells: 64) (1)
The Sultan's Game. Variant on 11 by 11 board from 19th century Germany. (11x11, Cells: 121) (1)
Suspicious Spies. An army where some pieces cannot be captured until it has captured a piece. (8x8, Cells: 64) (1)
Suzumu Shogi. 16x16 variant based on Tenjiku Shogi. (16x16, Cells: 256) (1)
TamerSpiel. Modern large chess variant with elements of historic chess variants. (12x8, Cells: 84) (1)
Tamerlane II. Modern variant based upon ancient large chess variant. (11x11, Cells: 121) (1)
Tape Chess and other almost one-dimensional chess variants. Tape Chess and other almost one-dimensional chess variants. (1)
Team-Mate Chess. Variant with 8 different pieces, none of which is able to checkmate a bare king on its own. (8x8, Cells: 64) (1)
Teleport Chess. Each non-pawn, non-king piece may teleport once per game. (8x8, Cells: 64) (1)
Templar Chess. Features the unorthodox Templar on a board with eight extra squares. (8x10, Cells: 72) (1)
TenCubed Chess. Variant on 10 by 10 board with combination pieces. (10x10, Cells: 100) (1)
Terachess II. An unrealistic summit on a very large board of 16x16 squares and 128 pieces. (1)
Test Minichess. Chess on a 6x6 board. (6x6, Cells: 36) (1)
Teutonic Knight's Chess. Played on an oblong board with rarely used pieces: The teutonic knight, the archchancellor and the crown princess. (8x10, Cells: 80) (1)
Texas Two-Step: an obscure political commentary. A non-competing 45 Square Contest entry. (5x9, Cells: 45) (1)
There is no queen, but 2 compounds. Missing description (9x9, Cells: 81) (1)
Third runner. Missing description (12x8, Cells: 96) (1)
Thraex_Chess. Introducing the Thraex, which captures like a rook, but moves by the bifurcated jump method (zrf available). (1)
Threatened Pawn Chess. Pawns start in threatened positions. (8x8, Cells: 64) (1)
Tiger Chess. A large game with fast-moving pieces. (1)
Tiger Hunt. Variant of The Maharaja and the Sepoys. (8x8, Cells: 64) (1)
Tigrey. Combination of Expanded Chess and Tiger Chess. (12x12, Cells: 144) (1)
Titan Chess. Chess featuring dozenal board and seven diverse new pieces with multiple capture mechanisms and movement modes. (12x12, Cells: 144) (1)
Toroidal Byzantine Chess. Circular chess modified to also be toroidal. (Cells: 64) (1)
Torus Chess. Large chess variant on torus shaped board. (16x8, Cells: 128) (1)
Trampoline Chess. Each player has a Trampoline that allows friendly pieces to make a second move. (8x8, Cells: 64) (1)
Transpose Chess. Board is turned 90 degrees. (8x8, Cells: 64) (1)
Tripunch Chess. Knights become Nightriders, Rooks add Gryphon moves, Bishops add Aanca moves, and Queens become unbelievable. (8x8, Cells: 64) (1)
Troitzky Chess. Troitzky Chess by Paul Byway, standard pieces on irregular board (with zrf). (1)
Turkish Chess. 8x10 board with different combination pieces, Vao and Pao. (8x10, Cells: 80) (1)
Turkish Great Chess II. Gollon's large historical variant. (10x10, Cells: 100) (1)
Turkish Great Chess III. John Gollon's third of six variations on Great Chess. (12x12, Cells: 144) (1)
Turkish Great Chess IV. John Gollon's fourth variation. This completes the set of 6. (14x14, Cells: 168) (1)
Turkish Great Chess VI. Large variant adding an Archbishop and a General (Amazon). (10x10, Cells: 100) (1)
Turkish Great Chess variation V. Large variant with three new pieces. (13x13, Cells: 169) (1)
Tutti-Frutti Chess. With bishop-knight, knight-rook, queen-knight and the usual pieces on an 8 by 8 board. (8x8, Cells: 64) (1)
Twin-board Ecumenical Chess. Ecumenical Chess with extra Pawns, on two FIDE boards joined together on one or more edges. (Cells: 128) (1)
Two Kingdoms. A decimal variant with a more powerful knight, and an added Archer piece. (10x10, Cells: 100) (1)
Two Large Shatranj Variants. Missing description (10x10, Cells: 100) (1)
Two Pipe Chess. Setup on 41-squares board looks like two tobacco pipes. (9x5, Cells: 41) (1)
Uchi Chu Shogi. 12x12 drops variant reminiscent of Chu Shogi. (12x12, Cells: 144) (1)
Ultima. Game where each type of piece has a different capturing ability. Also called Baroque. (8x8, Cells: 64) (Recognized!) (1)
Ultimajor. Ultima like game where each pieces are capable of checkmate with only their own King for support. (8x8, Cells: 64) (1)
Ultra Chess. On 10 by 10 board with two queens, and major pieces have an additional king's move. (10x10, Cells: 100) (1)
Ultrachess. Chess variant with two queens on 9 by 8 board. (9x8, Cells: 72) (1)
Unicorn Chess. 10x10 variant with a new piece that moves as a Bishop or a Nightrider. (10x10, Cells: 100) (1)
Unicorn Great Chess. Lions have been added to Unicorn Chess! (10x10, Cells: 100) (1)
Unirexal Chess. Only white has a king. (1)
Univers Chess. A Carrera's Chess variant based on Bruno Violet's Universal Chess. (10x8, Cells: 80) (1)
Upside-Down Chess. White starts at the upper two rows, black at the bottom. (8x8, Cells: 64) (1)
Vanguard Chess. Game on 16x16 board, with 48 pieces per player. (16x16, Cells: 256) (1)
VaoQi. XiangQi with Vaos. (9x10, Cells: 90) (1)
Variants playable against the diagram's AI. Index of variants that can be played against the interactive diagram. (1)
Veles Chess. Introducing the deflecting Veles bifurcator on a Gustavian board (with zrf). (1)
Venator Chess. Introducing the Venator, a bifurcation cannon related to the Korean cannon, on a Gustavian board (zrf available). (1)
Venomous. New system of chess on 10x10 board with new pieces: the Sorcerer Snake and the even more venomous Sissa. (10x10, Cells: 100) (1)
Veteran Chess. Most pieces can or must irreversibly promote when they capture. (1)
Victorian Chess. Capablanca variant with the most powerful pieces starting on the outside. (10x8, Cells: 80) (1)
Vivarta Chess. he rules are simple. Each piece automatically transforms into a different piece every time it moves. Pawns transform into Knig. (1)
WAD Chess. Chess on a 10x8 board with WADs (Champions) added. (10x8, Cells: 80) (1)
Waffle Chess. Chess on a 10x8 board with waffles added. (10x8, Cells: 80) (1)
The War of World`s Warriors Chess. Missing description (10x10, Cells: 100) (1)
War of the Roses. Missing description (12x12, Cells: 144) (1)
Warmachinewazir-Spiel. Alternative version of Courier-Spiel, using Warmachinewazirs. (12x8, Cells: 96) (1)
Werewolf Chess. An nearly invincible, but bribable Werewolf replaces the Queen. (8x8, Cells: 64) (1)
Wide Chess. Chess with 2 types of non-colourbound elephants added on a 12x8 board using fast castling rules. (1)
Wide Nightrider Chess. Chess on a 12x10 board with Nightriders, Champions and fast castling rules. (1)
Wide SOHO Chess. Chess on a 12x10 board with Archbishops, Marshalls, Champions, FADs, Wizards & Cannons. (1)
Wild Tamerlane Chess. A clash on a 11x11 board with pairs Queens and Eagles/Gryphons. (11x11, Cells: 121) (1)
Wildebeast9. A Variant of Wildebeast Chess. (1)
Wildebeest Chess. Variant on an 10 by 11 board with extra jumping pieces. (11x10, Cells: 110) (Recognized!) (1)
Wildebeest Decimal Chess. A Wildebeest Chess adaptation to the decimal board. (1)
Withdrawing Chess. Any piece can withdraw from other pieces to capture them. (8x8, Cells: 64) (1)
Wolf Chess. Half-century old variant on board of size 8 by 10. (8x10, Cells: 80) (1)
Xiang Courier. Xiang Qi enhanced in the style of Courier. (12x10, Cells: 120) (1)
Xiangaroo. Xiang Qi variant with compounds of back-rank pieces. (9x10, Cells: 90) (1)
Yangsi. A very playable chess variant with 12 different pieces on a 10x10 board. (1)
Zabel-Schach. A modest chess variant with an alternative pawn, the Zabel pawn. (8x8, Cells: 64) (1)
Zanzibar-S. A game in between Metamachy and Zanzibar-XL with 36 pieces per side. Preferred by some to the -XL version. (1)
Zen Zebras. A team for Chess with Different Armies based around the moves of the Zebra. (8x8, Cells: 64) (1)
Zeppelin Chess. Introducing the Zeppelin, which can fly to any empty square orthogonally (with zrf). (1)
ZhamengQi. XiangQi with Grasshoppers. (9x10, Cells: 90) (1)
ZigZag Chess. Variant on `zigzagshaped' board. (12x12, Cells: 64) (1)
ZigZag Madness. Featuring the crooked dual path sliders: the ZigZag Bishop and the ZigZag Rook. (10x10, Cells: 100) (1)
ZigZag X Chess. Variant on board with new shape. (12x12, Cells: 64) (1)
Ziggurat. Mesopotamian-themed variant on a 43-square board. (13x5, Cells: 43) (1)
Zwangkrieg. Pieces affect other pieces' movement, including forced movement. (12x12, Cells: 144) (1)
fortress. Missing description (12x12, Cells: 144) (1)

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Interactive Diagram: In Comment - The interactive diagram is in a comment but not on the page