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- 007 Chess. 007 Chess involves three move per turn, including one of your opponent's pieces. Author: Jeremy Gabriel Good. Inventor: Edward Jackman.
- 007 Chess. A variant where you also move your opponents pieces. (8x8, Cells: 64) By Edward Jackman.
- 10 Minute Melee. Missing description Author: Nick Wolff. Inventor: Mason Green.
- 10 Minute Melee. Score as many points during 10 minutes of time with regular chessset. (8x8, Cells: 64) By Mason Green.
- 10-directionaI Chess . Chess using the army invented by Jorg Knappen. It also includes his suggested variants of CwDA using his army. By Nick Wolff.
- 10-directional Chess. Updated with rule-enforcing presets. By Nick Wolff.
- 10-directional Chess. 10-directional pieces: an augmented Knight and a restricted Chancellor. (8x8, Cells: 64) By Jörg Knappen.
- 123456 Chess. Uses 2 dices for each player and 2 checkers for each player, in addition to normal chess pieces. (8x8, Cells: 64) By (zzo38) A. Black.
- 123456 Chess. Missing description Author: Nick Wolff. Inventor: (zzo38) A. Black.
- 1st WWW Progressive Fischer Random Chess Championship. Missing description
- 2Choice Chess. You can tell opponent which pieces he can move. (8x8, Cells: 64) By (zzo38) A. Black.
- 2nd WWW Progressive Fischer Random Chess Championship. Missing description
- 3 Strikes Chess. The first attack does not immediately remove pieces from the board. (8x8, Cells: 64) By Charles Gilman.
- 3to2. Missing description By Stephane Burkhart.
- 3to2. Missing description (8x8, Cells: 64) By Stephane Burkhart.
- 6hess. Each piece moves 6 times before disappearing. By Adrian Alvarez de la Campa.
- 8-Piece Chess. (Queen's Army chess, all 8 Back Rank Pieces different). By JT K.
- Absolute checkless chess. No piece may cross a square where it gives check. (8x8, Cells: 64) Author: Hans L. Bodlaender.
- Absorption Chess. Capturer gains movement abilities. Author: Ed Friedlander.
- Absorption Chess. Pieces gain the powers of a piece they take. (8x8, Cells: 64) Author: Michiel de Bondt.
- Absorption Chess II. Capturer gains movement abilities. This applet extends this to kings and pawns. Author: Ed Friedlander.
- Accelerated Chess. Two non-capturing moves, or one capturing move, each turn. Author: Ed Friedlander. Inventor: Tony Paletta.
- Accelerated Chess. White makes one move at first and then each player makes either a capturing move or two non-capturing moves. Author: Jeremy Gabriel Good. Inventor: Tony Paletta.
- Accessory Chess. A drop variant with one or two external pieces per player (many to choose from). Zillions (zrf) program available. By M Winther.
- Accounting Chess. Modern Business Chess: win by capturing or indicting the opposing CEO (King), or bilking all of your Stockholders (Pawns). (8x8, Cells: 64) By Dan Troyka.
- Accounting Chess . Modern Business Chess: win by capturing or indicting the opposing CEO (King), or bilking all of your Stockholders (Pawns). By Dan Troyka.
- Active King Chess. Each turn, one must move one's king in addition to moving other pieces. Author: Jeremy Gabriel Good. Inventor: Köksal Karakus.
- Actualized Potential Chess. Pieces exist where they are but also all along their routes or points of attack. By Jeremy Gabriel Good.
- Actuated Rotating Center Chess. Center rotates, you choose when and how. Author: Ed Friedlander. Inventor: A. E. Farebrother and W. H. Rawlings.
- Adams, Michael. An Interview about a Fischer Random Chess match.
- Adjutant Chess. Introducing the Adjutant that can slide like a queen, but on the same square colour only (with zrf). By M Winther.
- Advance Chess. Pawns begin on third and sixth ranks. Author: Ed Friedlander. Inventor: Tony Paletta.
- Advanced Chess. Pawns move in a similar fashion to the pieces they start in front of. (8x8, Cells: 64) By Este.
- Ajax Orthodox Chess. Orthodox Chess with Ajax-Chessmen, and droping Ajax-Ministers. By Jose Carrillo.
- Ajax Orthodox Chess. Orthodox Chess with Ajax-Chessmen, and droping Ajax-Ministers. (8x8, Cells: 64) By Jose Carrillo.
- Ajax Random Chess. Pseudo-Fischer Random Chess with Ajax-Chessmen, and droping Ajax-Ministers. (8x8, Cells: 64) By Jose Carrillo.
- Akenhead's Chess. Chinese pieces and Berolina pawns. Author: Ed Friedlander. Inventor: J. Akenhead.
- Alapawn. A simplified, more chess-like version of Alapo 8x8. (8x8, Cells: 64) By Luis Bolaños Mures.
- All the Way Chess. Pieces must move as far as they can when moved. (8x8, Cells: 64) By Doug Chatham.
- All The Way Chess. Pieces must move as far as they can when moved. By Doug Chatham.
- All-In Chess. You may move either side's units. Author: Ed Friedlander. Inventor: Chris Taylor.
- All-Mate Chess. Capture a piece only by rendering it unable to avoid FIDE capture. Author: Ed Friedlander. Inventor: Chris Taylor.
- All-mate Chess. Pieces are captured by having them `checkmated'. (8x8, Cells: 64) Author: Hans L. Bodlaender. Inventor: Chris Taylor.
- All-round King. Things you must do with the king changes during the game: normal king transfors into ani-king and others. (8x8, Cells: 64) By Daniil Frolov.
- Allthought Chess. Variant of Thinktank Chess with Berolina Pawns. (8x8, Cells: 64) Author: Peter Aronson. Inventor: Frank Maus.
- Almost chess. One queen has combined rook and knight moves. (8x8, Cells: 64) Author: Hans L. Bodlaender. Inventor: Ralph Betza.
- Almost Chess. The queen may move as a knight or rook but not as a bishop. Author: Ed Friedlander. Inventor: Ralph Betza.
- Almost Chess . One queen has combined rook and knight moves. Author: Uwe Wiedemann. Inventor: Ralph Betza.
- Alpaca Chess. An Alpaca, worth two pawns, is added to the standard piece context (with zrf). By M Winther.
- Alpaca Chess. Introducing the weak but interesting Alpaca, which hops one or two steps rookwise (with zrf). By M Winther.
- Alternating Chess III. Each side alternates between moving pawn and piece. Author: Ed Friedlander.
- Alternative Chess. A drop variant with one single external piece per player (many to choose from). Zillions (zrf) program available. By M Winther.
- AlterWay. Shareware program. Find a sequence of moves taking all black pieces. By Aleksey Bartashnikov.
- Amalgamated Chess. Missing description By James Gryphon.
- Amalgamated Chess. Incorporates some aspects of historical variants, but uses only usual equipment. (8x8, Cells: 64) By James Gryphon.
- Amazon Chess. Play this game in which the Queen can also move as a Knight on Jocly. Author: Michel Gutierrez and Jérôme Choain.
- Amazon Chess. The queen may also move as a knight. Author: Ed Friedlander.
- Amazon Chess. Well known old variant with amazons instead of Queens in FIDE Chess. Author: Jeremy Gabriel Good.
- Amazon chess. Queen may also move as a knight. (8x8, Cells: 64) Author: Hans L. Bodlaender.
- Amazone Chess . Queen may also move as a knight. Author: Uwe Wiedemann.
- Ambiguous Chess. A modest variant, similar to Refusal Chess. (8x8, Cells: 64) By Fabrice Liardet.
- Amontillado. Pieces have combined `halfling' powers, going half the usual distance. (8x8, Cells: 64) By Ralph Betza.
- Amphibian Chess . Pieces capture by leaping when there's a square past the target, or by replacement when the target is on the edge. Author: Peter Aronson. Inventor: Tony Paletta.
- ancient chess. a antidevelopment of chess. (8x8, Cells: 64) By Andy Maxson.
- Ancient world war. Missing description (8x8, Cells: 64) By Daniil Frolov.
- Andernach. The capturing piece changes colors. Author: Jeremy Gabriel Good. Inventor: Stefanos Pantazis.
- Andernach Chess. Pieces change side when taking. Author: Stefanos Pantazis.
- Andy's Chess. Missing description By andrewthepawn.
- Anglis Qi. Xiang Qi and FIDE Chess variant. (8x8, Cells: 64) By Charles Gilman.
- Annihilation I. Capture all non-royal units without checking the king. Author: Ed Friedlander.
- Annihilation II. Capture all enemy units except the uncapturable king. Author: Ed Friedlander.
- Anti-Check Chess. Variation of Anti-King Chess II. (8x8, Cells: 64) Author: Kieran Child.
- Anti-Chess. Lose all your pieces to win. Author: Fergus Duniho.
- Anti-Gravity Chess. Pieces that moved repel pieces like magnets. (8x8, Cells: 64) By João Pedro Neto.
- Anti-Gravity Chess. A newly-moved unit repels the nearest unit along each. Author: Ed Friedlander. Inventor: João Pedro Neto.
- Anti-Gravity Chess . Pieces that move repel other pieces. By João Pedro Neto.
- Anti-King Chess . Each player has both a King and an Anti-King to protect; Anti-Kings are in check when not attacked. By Peter Aronson.
- Anti-King Chess. Each player has both a King and an Anti-King to protect. Play it! Author: Tony Quintanilla. Inventor: Peter Aronson.
- Anti-King Chess. Each player has both a King and an Anti-King to protect; Anti-Kings are in check when not attacked. (8x8, Cells: 64) (Recognized!) By Peter Aronson.
- Anti-King Chess I. Each player has both a King and an Anti-King to protect; Anti-Kings are in check when not attacked. Author: Ed Friedlander. Inventor: Peter Aronson.
- Anti-King Chess II. Win by putting your opponent's Anti-King out of check. Author: Fergus Duniho and Tony Quintanilla. Inventor: Peter Aronson.
- Anti-King Chess II. Each player has both a King and an Anti-King to protect; Anti-Kings are in check when not attacked. Author: Ed Friedlander. Inventor: Peter Aronson.
- Anti-Magnetic Chain Chess. Pieces that moved must have a chain of `anti-magnetic interaction' with their own king. (8x8, Cells: 64) By João Pedro Neto.
- Anti-Magnetic Chess . Pieces that move repel pieces like magnets. Author: João Pedro Neto.
- Anti-Magnetic Chess. Like colors attract, opposites repel, along orthogonal lines. Author: Ed Friedlander. Inventor: João Pedro Neto.
- Anti-Magnetic Chess. Pieces that moved repel and attract pieces like magnets. (8x8, Cells: 64) By João Pedro Neto.
- Anti-Magnetic Chess. Four anti-magnetic chessproblems. By Ben Good.
- Anti-Magnetic Chess. Some AntiMagnetic Chess Games. By João Pedro Neto.
- Anti-Prechess. The opponent must place your piece on the board. (8x8, Cells: 64) By Ralph Betza.
- Anti-Relay Tutti-Frutti Chess . Anti-relay is when a piece loses a movement capability it normally does have due to its position relative to another piece. By Michael Nelson.
- Anticipation Chess. Commit after moving to which kind of unit you will move next. Author: Ed Friedlander. Inventor: Raymond Pink.
- Antimatter Chess. Missing description (8x8, Cells: 64) By Claudio Martins Jaguaribe.
- Antipodean Chess. Captured units move, if possible, to the square four ranks and four files away. Author: Ed Friedlander.
- Antipodean Chess II. Captured units move, if possible, to the square four ranks and four files away. This can queen a pawn. Author: Ed Friedlander.
- Anywhere Chess. Missing description Author: Ed Friedlander.
- Anywhere Chess . Pieces (except kings) can make teleport moves to any empty square on the board. Author: Uwe Wiedemann.
- Anywhere Chess and Variations. Pieces (except kings) can make teleport moves to any empty square on the board. With several variants. (8x8, Cells: 64) By Edward Jackman.
- Arch-Chancellor Chess. Uses Archbishops instead of Bishops and Chancellors instead of Knights. Author: Dominique Leste and Tony Quintanilla. Inventor: Dominique Leste.
- Arch-Chancellor Chess. Uses Archbishops instead of Bishops and Chancellors instead of Knights. (8x8, Cells: 64) By Dominique Leste.
- Archimedes Chess. Capture by attacking an enemy unit with two of yours. Author: Ed Friedlander. Inventor: Philip M. Cohen.
- Archoniclastic Chess. Pieces are augmented on squares of their color. (8x8, Cells: 64) By Ralph Betza.
- Argess. White and Black have different starting positions. (8x8, Cells: 64) By Hector H. Carreño.
- Arimaa. Uses same equipment as Chess, but designed to be difficult for computers. By Omar Syed and Aamir Syed.
- Arimaa. Board game playable with standard chess set, hard for computers. (8x8, Cells: 64) Author: Hans L. Bodlaender. Inventor: Omar Syed and Aamir Syed.
- Arktur. Two kings and randomized setup. (8x8, Cells: 64) By Peter Riessen.
- Arktur Chess. Random first ranks, two kings. Author: Ed Friedlander. Inventor: Peter Riessen.
- Armor Chess. Personal shields protect pieces from one of the 8 directions. Author: Ben M Reiniger and Vladimir . Inventor: Vladimir .
- Arrangement Chess. Swap king & queen before play begins. With mirrored kings and non-mirrored queens (with zrf). By M Winther.
- Arrangement Chess. The players take turns to relocate the king and the queen, thus enhancing opening ramification (with zrf). By M Winther.
- Arrow Pawn Chess. Pawns do not promote but have expanded moves. Author: Ed Friedlander. Inventor: R. Persson.
- Ascending the Throne. When the king is lost, another piece becomes royal. (8x8, Cells: 64) By Terry H. Jones.
- Assassin Chess. Shoot chess without royalty and with pawns that cannot be shot by line movers. Author: Ed Friedlander. Inventor: Jed Stone.
- Assassin Kriegspiel. Kriegspiel variant with unknown setups and special roles for knights and queen. (8x8, Cells: 64) Author: Hans L. Bodlaender. Inventor: Hubert Philips.
- Assassin Kriegspiel. Kriegspiel variant with unknown setups and special roles for knights and queen. Author: Ed Friedlander. Inventor: Hubert Philips.
- Assault Chess. Play twice; which can win as White against a weakened Red faster? Author: Ed Friedlander. Inventor: João Pedro Neto.
- Assault&Siege. Missing description (8x8, Cells: 64) By Ismael Santos.
- Assideum. Game on 8 by 8 board with differenly moving pieces. Author: Doug Garand.
- Assimilation Chess. Increase your material by assimilating your opponent's pieces. (8x8, Cells: 64) By Fergus Duniho.
- Assimilation Chess . Increase your material by assimilating your opponent's pieces. By Fergus Duniho.
- Assimilation Chess. Play this variant in which pieces assimilate the powers of captured pieces. By Fergus Duniho.
- Assimilation Fusion Chess. A hybrid of Assimilation Chess and Fusion Chess. Pieces combine and split apart. (8x8, Cells: 64) By Fergus Duniho.
- Assimilation Fusion Chess . A hybrid of Assimilation Chess and Fusion Chess. Pieces combine and split apart. By Fergus Duniho.
- Assymetrical diagonal chess. Diaonal chess (well balanced) variant with 8 pawns per player. By Zbigniew Kokosiński.
- Ataturk Chess. Players may announce a different piece to be royal. (8x8, Cells: 64) By Ralph Betza.
- Atlantis Chess . Instead of moving, a player may remove an square from the edges of the board. Author: Doug Chatham. Inventor: Gerben Dirksen.
- Atlantis Chess. You may sink an edge square instead of moving a unit. Author: Ed Friedlander. Inventor: Gerben Dirksen.
- Atlantis Chess. Instead of moving, a player may remove an square from the edges of the board. (8x8, Cells: 64) Author: Hans L. Bodlaender. Inventor: Gerben Dirksen.
- Atomic chess. Pieces explode when captured. (8x8, Cells: 64) Inventor: Nassah Bey Taher.
- Augmented Chess . Players give standard chess pieces small additional movement possibilities from predescribed set. Author: Peter Aronson. Inventor: Ralph Betza.
- Augmented Chess. Players give standard chess pieces small additional movement possibilities from predescribed set. (8x8, Cells: 64) By Ralph Betza.
- Augmented Different Knights. Knights receive different additional movement possibilities. (8x8, Cells: 64) By Ralph Betza.
- Augmented Half Chess. Pieces can go half as far, but then are augmented with additional movement possibilitie. (8x8, Cells: 64) By Ralph Betza.
- Avalanche Chess. Advance the opponent's pawns. Popular variant. Author: Ed Friedlander. Inventor: Ralph Betza.
- Avalanche Chess. A popular chess variant, where you advance your opponents pawns. (Recognized!) Author: Antoine Fourrière. Inventor: Ralph Betza.
- Avalanche chess. A popular chess variant, where you advance your opponents pawns. (8x8, Cells: 64) (Recognized!) Author: Edward Jackman. Inventor: Ralph Betza.
- Avalanche Chess . A popular chess variant, where you advance your opponents pawns. Author: Young-Hyun Joo. Inventor: Ralph Betza.
- Avalanche Chess 2. As before, except that the red king and queen are switched. Author: Ed Friedlander. Inventor: Ralph Betza.
- Aviary. New pieces with shogi elements and a bird theme. (8x8, Cells: 64) By Daniel Hollombe.
- Aviary . New pieces with shogi elements and a bird theme. Author: Peter Aronson. Inventor: Daniel Hollombe.
- Aviation Chess. Legan's Aviation Chess, popular during WWI, featuring the Aviator piece (with zrf). By M Winther.
- Aviation Chess. Knight pawns move and capture as bishops and can leap any number of units. Author: Ed Friedlander. Inventor: L. Legan.
- Babylonian Chess. Captures are determined by rolling dice. (8x8, Cells: 64) By Muhammad Hidayat.
- Bachelor Chess. All pieces promote. Win in the usual way or by joining king and queen. Author: Ed Friedlander. Inventor: Doug Chatham.
- Backlash. Play on two boards, but capturing on one board leads to a backlash on the other! (2x(8x8), Cells: 132) By Greg Strong.
- Backwards Stalemate Chess. Missing description (8x8, Cells: 64) By John Kipling Lewis.
- Balaklava Chess. Many pieces have additional knight moves. (8x8, Cells: 64) Author: Alessandro Castelli. Inventor: Gianluca Vecchi.
- Balaklava Chess . All non-royal units can make non-capturing knight moves. Author: Marek14 . Inventor: Gianluca Vecchi.
- Balaklava Chess. All non-royal units can make non-capturing knight moves. Author: Ed Friedlander. Inventor: Gianluca Vecchi.
- Balanced Swap Chess. Move has second part where a swap is made on the board. (8x8, Cells: 64) By João Pedro Neto.
- Bank Chess . Put your assets on the bank for later use! 6 Variants. Author: Karl Scherer. Inventor: Karl Scherer and Denis van Straten.
- Bank of Scotland -- Main Branch. Progressive Variant where each check earns the player an extra move, and check ends turn. Author: Ed Friedlander. Inventor: Bob Bruce and Bruce R Trone.
- Barasi Chess. Pieces cannot move backwards; pawns are Berolina. Author: Ed Friedlander. Inventor: Paul Barasi.
- Barasi chess . Game named after inventor with Berolina pawns can also move backwards; other pieces can only move forwards. Author: Marek14 . Inventor: Paul Barasi.
- Barasi Chess. Game named after inventor with Berolina pawns can also move backwards; other pieces can only move forwards. (8x8, Cells: 64) Author: Hans L. Bodlaender. Inventor: Paul Barasi.
- Bario. Pieces are undefined until they move. Author: M Winther. Inventor: Panos Louridas.
- Bario. Pieces are undefined until they move. Author: Tony Quintanilla and Gary K. Gifford. Inventor: Panos Louridas.
- Bario. Pieces are undefined until they move. (8x8, Cells: 64) Author: Alex . Inventor: Panos Louridas.
- Barion. A variant of the chess variant Bario. By M Winther.
- Barion. A variant of the chess variant Bario. By M Winther.
- Baroque Chess. Java applet that plays the game. Author: Jesse Plymale. Inventor: Robert Abbott.
- Baroque/Ultima. Game where each type of piece has a different capturing ability. (8x8, Cells: 64) (Recognized!) Author: Hans L. Bodlaender and Fergus Duniho. Inventor: Robert Abbott.
- Baseline chess. Start chess with main pieces in different order on baselines. Overview of several variants. (8x8, Cells: 64) Author: Hans L. Bodlaender.
- Baseline chess with Fischer rules. Start with dropping major pieces on baseline, a variant that uses rules from Fischer Random Chess but is not random. (8x8, Cells: 64) By Ken Regan.
- Basic Chess. Variable baseline chess without drawing lots. Restrict Rooks to a and h files, and King to d or e files. By Charles Daniel.
- Bastille Chess . Win by clearing your opponent's fortress. Author: Peter Aronson.
- Bastille Chess. Win by clearing your opponent's fortress. (8x8, Cells: 64)
- Batak Chess. Indonesian culture where chess is very popular. Author: Ed Friedlander.
- Battle Chess. Move as many of your units as you like, once each, each turn. Author: Ed Friedlander.
- Battle of Kings. You start with eight pawns. The rest chess pieces appear on the board during the game. By Вадря Покштя.
- Battler Chess. Game with powerful King, and improved Bishops, Knights and Pawns. (8x8, Cells: 64) By Modest Solans.
- Beast Chess. Replace conventional pieces with those that look like animals. (8x8, Cells: 64) By Bob Greenwade.
- Bedlam. A hybrid of Metamorphin' Fusion Chess and Chessgi. (8x8, Cells: 64) By Fergus Duniho.
- Bedlam. Play this hybrid of Fusion Chess, Metamorph Chess, and Chessgi. By Fergus Duniho.
- Beginners Chess. Missing description By Stephane Burkhart.
- Beginners Chess. Missing description (8x8, Cells: 64) By Stephane Burkhart.
- Behemoth Loop Chess. Pieces captured by a randomly moving Behemoth can be dropped later. (8x8, Cells: 64) By Thomas .
- Beirut Chess. One unit is secretly carrying a bomb. Author: Ed Friedlander. Inventor: Jim Winslow.
- Benedict Chess . Instead of being captured, enemy pieces switch sides. By Dan Troyka.
- Benedict Chess. Instead of being captured, enemy pieces switch sides. (8x8, Cells: 64) By Dan Troyka.
- Benedict Chess. Instead of being captured, enemy pieces switch sides. Author: Ed Friedlander. Inventor: Dan Troyka.
- Bennekom Double Move Chess. Move twice per turn with the same piece. (8x8, Cells: 64) Author: Hans L. Bodlaender.
- Bennie Prince's Chess. Units not under attack may be removed and returned, one at a time. Author: Ed Friedlander.
- Berolina Chess. Pawns move diagonally and capture straight ahead. Author: Ed Friedlander.
- Berolina Chess. Different moving pawns. (8x8, Cells: 64) (Recognized!) Author: Hans L. Bodlaender. Inventor: Edmund Hebermann.
- Berolina Chess. Classic variant with different moving pawns. Author: Fergus Duniho.
- Berolina Grid Chess. Popular with NOST. Author: Ed Friedlander.
- Berolina Grid Chess. Combination of Berolina Chess and Grid Chess. (8x8, Cells: 64) Author: Hans L. Bodlaender.
- Berserker Pawns. Pawns may go berserk to protect their King and once per game in addition. (8x8, Cells: 64) By Terry H. Jones.
- Beyond Chess (tm). Commercial variant with dynamic board. (8x8, Cells: 64) Author: David Howe. Inventor: David Crockett.
- Bicapture Chess. You may capture, and be checked by, your own units. Author: Ed Friedlander.
- Billiards Chess. Bishops and queens bounce off the edges. Author: Ed Friedlander.
- Billiards progressive chess. Progressive chess variant where queens and bishops bounce against the edges of the board. (8x8, Cells: 64) Author: Fabio Forzoni.
- The Birth of Fischer Random Chess. Missing description (8x8, Cells: 64) Author: Eric van Reem. Inventor: Robert J. Fischer.
- Bishop Chess. Bishops do not capture and cannot be captured. Author: Ed Friedlander.
- Bishop Knight Morph Factor. Missing description Author: Jeremy Gabriel Good. Inventor: Gary K. Gifford.
- Bishop Knight Morph Factor. Missing description (8x8, Cells: 64) By Gary K. Gifford.
- Black and White Chess. Two moves per turn, the first from a white square, the second. Author: Ed Friedlander. Inventor: Vernon Rylands Parton.
- The Black Ghost. Black gets a teleporting Ghost piece that can not capture to balance White's first move advantage. (8x8, Cells: 64) By Ralph Betza.
- Black Hole Chess. Pieces moved to the center four squares of the board fall into your hand. Author: Ed Friedlander. Inventor: Karl Scherer.
- Blackjack Chess. If the point value of your remaining units totals 21, you win. Author: Ed Friedlander. Inventor: Henk Breugem.
- Blackjack chess. Win also if the value of pieces you have is exactly 21 points. (8x8, Cells: 64) Author: Hans L. Bodlaender. Inventor: Henk Breugem.
- Blackjack Chess. Reduce the point value of your pieces to exactly 21 points and win the game. Or do it the old-fashioned way. Author: Jeremy Gabriel Good and Adrian Alvarez de la Campa. Inventor: Henk Breugem.
- Bland Chess. Chess with no diagonal moves. (8x8, Cells: 64) By (zzo38) A. Black.
- Bland Chess. Chess, but with no diagonal movements (aside from that built within the Knight). Author: Gary K. Gifford.
- BlindChess. A blindfold program (optional board), good for training (DOS freeware). By M Winther.
- Blindfold Chess. One of the oldest chess variants, where one of the players is blindfolded (zrf available). Author: M Winther.
- Blizzard Chess. What would Chess be like if it had been developed by the computer industry? By Blarney.
- Blizzard Chess . Chess, as if it had been developed by the software industry (with all patch levels). Author: Alfred Pfeiffer. Inventor: Blarney.
- Blizzard Chess. Chess, as if it had been developed by the software industry. Author: Larry L. Smith. Inventor: Blarney.
- Blockade Chess. Missing description Author: Ed Friedlander.
- Blood Brothers Chess. Pieces defend others of their kind regardless of location. Author: Ed Friedlander. Inventor: Philip M. Cohen and R. Wayne Schmittberger.
- Blue Chess. White and Black have additional, differing victory conditions. Author: Ed Friedlander.
- Blue Chess or Deep Blue Vs. Kasparov Chess. Tribute to a famous game with three shades of blue and different options for each player to achieve a win. Author: Jeremy Gabriel Good.
- Blue Chip Chess. A chip, moved each turn by the players, denotes a square where pieces may not go to. (8x8, Cells: 64) By Neal Turner.
- Blue Chip Chess. Fun variant where each turn you get to create an off-limits square for your opponent . Author: Jeremy Gabriel Good. Inventor: Neal Turner.
- Blue Chip Chess. Missing description By Neal Turner.
- Blue Queen on 64 and 80. Blue Queen belongs to both sides. By George William Duke.
- Bluff Chess. Players moving their pieces into danger may risk losing the game. (8x8, Cells: 64) By Robbie Manson.
- Blunderbuss Chess. Pieces are poorer shots than in Rifle Chess. (8x8, Cells: 64) By Charles Gilman.
- Bomb Chess. Queen's Rook moves as king and can explode. Author: Ed Friedlander. Inventor: Duncan Suttles.
- Bomber Chess I. Pawns can be made to explode. Author: Ed Friedlander. Inventor: Adam Norberg.
- Bomber Chess II. Pawns can be made to explode, and always explode when. Author: Ed Friedlander. Inventor: Adam Norberg.
- Bomber Chess III. Pawns and pieces can be made to explode. Author: Ed Friedlander. Inventor: Adam Norberg.
- BomberChess . A pawn may be exploded, removing pieces on all 8 adjacent squares. Author: Peter Aronson. Inventor: Adam Norberg.
- BomberChess. A pawn may be exploded, removing pieces on all 8 adjacent squares. (8x8, Cells: 64) Author: Adam Norberg.
- Bookie Chess. An online game generator which combines chess and gambling. By Tyler Wong.
- Booster Chess . Pawns push friendly pieces. Author: Marek14 . Inventor: Tony Paletta.
- Booster Chess. Pawns push friendly pieces. Author: Ed Friedlander. Inventor: Tony Paletta.
- BordahBee. A two-move, two-board game with restrictions for the second move according to the first move. By Gary K. Gifford.
- BordahBee, A Two-Board Game (two 8x8 boards). Missing description (2x(8x8), Cells: 128) By Gary K. Gifford.
- Bovine Chess. chess variant to illustrate new alternative notation for fairy pieces. By sam tenka.
- Brand X Random Chess. Play Chess with a randomized setup. By Fergus Duniho.
- Braves' Chess. Solves the problem of draws in chess. (8x8, Cells: 64) By Luis Bolaños Mures.
- Breakthrough Chess. Pieces must "break through" a zone of neutral blocks. (8x8, Cells: 64) By Adrian Alvarez de la Campa.
- Brett Rules. Different mobility of queens, rooks, and bishops and a different winning condition. (8x8, Cells: 64) Author: Juraj Pivovarov.
- Brett Rules . Different mobility of queens, rooks, and bishops and a different winning condition. Author: Uwe Wiedemann. Inventor: Juraj Pivovarov.
- Brett rules . Different mobility of queens, rooks, and bishops and a different winning condition. Author: Marek14 . Inventor: Juraj Pivovarov.
- Brickchucking Chess. Pieces can only move forward, but attack the king in any direction. Author: Ed Friedlander. Inventor: Alan Holloway and Gary Smith.
- Brickchucking Chess. Pieces cannot move backwards, but do give check/mate backwards. Author: Ben M Reiniger. Inventor: Alan Holloway and Gary Smith.
- Brotherhood Chess. A piece cannot capture one of its own kind. Author: Antoine Fourrière. Inventor: Gianluca Vecchi.
- Brotherhood Chess. A piece cannot capture one of its own kind. Author: Ed Friedlander. Inventor: Gianluca Vecchi.
- Brotherhood chess. Pieces cannot take pieces of the same type. (8x8, Cells: 64) Author: Alessandro Castelli. Inventor: Gianluca Vecchi.
- Brotherhood Chess . A piece cannot capture one of its own kind. Author: Marek14 . Inventor: Gianluca Vecchi.
- Bug Eyed Monster Chess. A non-royal unit may make any move which, in FIDE chess, some other. Author: Ed Friedlander.
- Bughouse Chess. Usually called Replacement Chess. Captured pieces must be put on an empty square on the board. (8x8, Cells: 64) Author: Hans L. Bodlaender.
- Builder chess. Introducing the Builder. (8x8, Cells: 64) By Hafsteinn Kjartansson.
- Building Chess. Variant that starts with a board of 25 squares, but each player adds a square after their move. (8x8, Cells: 64) By Sergey Sirotkin.
- Bull's eye. Upgrading of the possibilities to move within the Bull's eye to make the game more dynamic. (8x8, Cells: 64) By Gerd P. Degens.
- Burmese Chess. Sittuyin preset uses a mix of equivalent pieces from Alfaerie Set. By Charles Daniel.
- Butters Chess. Capture by moving adjacent rather than by displacement. Author: Ed Friedlander.
- Calorie Chess. Pieces have a limited amount of calories to move with, and have resorted to cannibalism! (8x8, Cells: 64) By John Smith.
- Canadian Chess. Captured units are replaced immediately. Author: Ed Friedlander.
- Canadian Chess II. Queens are replaced as rooks, rooks as bishops, etc. Pawns are not. Author: Ed Friedlander.
- Canadian Progressive Chess. Usually Canadian Chess is played progressively. Author: Ed Friedlander.
- Cancellation Rules. Capturing results in left-over pieces based on the difference in point values of the two pieces. (8x8, Cells: 64) Author: Jeff Zeitlin.
- Cannibal Chess . Pieces get the powers of a piece they take. Author: Marek14 .
- Cannibal Chess. Pieces get the powers of a piece they take. (8x8, Cells: 64) Author: Michiel de Bondt.
- Cannon Chess . Played on a 9x9 Shogi board, feature various types of 'Cannon' pieces. Inventor: Peter Michaelsen.
- Cannon Chess. Rooks and Bishops move and capture after the style of Chinese cannons. Author: Ed Friedlander.
- Cannono. Pieces move by bifurcation, but capture normally. (8x8, Cells: 64) By John Smith.
- Cannonrider Chess. The Cannonrider moves differently depending on square colour: on white squares as a Nightrider; else as a Chinese Cannon. By M Winther.
- Capapranka Chess. A cap renders a square and any occupant non-functional. Author: Ed Friedlander.
- Capped Pawn Chess. White must checkmate with a move of the KBP or lose. Author: Ed Friedlander.
- Capped Pawns (Bemützte Bauern). Pawns have a double step once in their career. By Jörg Knappen.
- Capricorn Chess. Missing description Author: Ed Friedlander. Inventor: Vernon Rylands Parton.
- Capture the Flag Chess. As in the kids' tag game. Author: Ed Friedlander. Inventor: João Pedro Neto.
- 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) By Charles Daniel.
- Capture-the-King. Missing description (8x8, Cells: 64) By Jeremy Gardiner.
- Capturing Progressive Chess. Scotch Chess, but if no capture is made the count drops back to one. Author: Ed Friedlander.
- Carnival of the Animals. A nearly-FIDE variant with Eurofighter Pawns (first implementation on an 8x8 board) dice (two aside for preference) which mutate. (8x8, Cells: 64) By Charles Gilman.
- Cassandra Chess. Prophesy the doom of opposing pieces two turns in advance to capture them. (8x8, Cells: 64) By Ralph Betza.
- Castle Chess . White must prevent black from castling. Author: Uwe Wiedemann.
- Castle Chess. As Fide-chess, but with extended castle: the king may jump three squares (with zrf). By M Winther.
- CastleChess. White must prevent black from castling. (8x8, Cells: 64) Author: Éric Angelini.
- Castling in Chess 960. New castling rules for Fischer Random Chess. (8x8, Cells: 64) By John Kipling Lewis.
- Castlingmost Chess. All movement in this variant is a form of castling. (8x8, Cells: 64) By Ralph Betza.
- Cavalier Chess. All pieces except queens have some kind of knight-movement. By Fergus Duniho.
- Cavalier Chess. Play Cavalier Chess with Jocly. By Fergus Duniho.
- Cavalier Chess. All pieces except queens have some kind of knight-movement. Author: Ed Friedlander. Inventor: Fergus Duniho.
- Cavalier Chess . All pieces except queens have some kind of knight-movement. By Fergus Duniho.
- Cavalier Chess. All pieces except queens have some kind of knight-movement. (8x8, Cells: 64) By Fergus Duniho.
- Cavalier Chess Photographs. All pieces except queens have some kind of knight-movement. By Fergus Duniho.
- Cavalier Zillions Saved Game . Download this file to see this game played in the Multivariant Play by E-Mail Tournament. Author: Tony Quintanilla and Peter Aronson. Inventor: Fergus Duniho.
- Cavalier Zillions Saved Game . Download this file to see this game played in the Multivariant Play by E-Mail Tournament. Author: Michael Nelson. Inventor: Fergus Duniho.
- Cavalry Chess. A once popular variant from the 1920's where every piece has additional jumping moves. (8x8, Cells: 64) Author: Peter Aronson. Inventor: Frank Maus.
- Cavalry Chess. Enhanced moves for all pieces. Author: Ed Friedlander. Inventor: Frank Maus.
- Cavalry Chess . A once popular variant from the 1920's where every piece has additional jumping moves. Author: Peter Aronson. Inventor: Frank Maus.
- Centaur Chess. Pieces move backwards as Knight. (8x8, Cells: 64) By Adrian Alvarez de la Campa.
- Centaur Chess. All pieces except Pawns move backwards as a Knight. By Adrian Alvarez de la Campa.
- Centaur Chess . All pieces except Pawns move backwards as Knights. By Adrian Alvarez de la Campa.
- Center of Attention. In addition to regular rules, win by moving your King to a center square. (8x8, Cells: 64) Author: Johan Richter.
- Center of Attention. FIDE Chess but with an additional winning condition: Move your king unchecked into a center square. Author: Jeremy Gabriel Good. Inventor: Johan Richter.
- Center of Attention Chess. In addition to regular rules, win by moving your King to a center square. Author: Ed Friedlander. Inventor: Johan Richter.
- Centerless Chess. No center pawns or squares. Author: Ed Friedlander. Inventor: Tony Paletta.
- Central Chess. Move twice per turn, once in center and once on edge. Author: Ed Friedlander.
- Central Rotational Chess. Plays like chess except the center (4 squares) rotate after each move and kings must be captured (instead of mated). (8x8, Cells: 64) By Gary K. Gifford.
- Cerimon Chess. Recover pieces by checking with a like piece. (8x8, Cells: 64)
- CGNP chess. A game with Knightly Pawns. By Abdul-Rahman Sibahi.
- Chafl. combines Chess with Tafl. (8x8, Cells: 64) By Graeme C Neatham.
- Chain of Fools. Game with a Chess set where the goal is form chains of defended pieces. (8x8, Cells: 64) By Francois Tremblay.
- Chameleon Chess Redux. Missing description (8x8, Cells: 64) By Adam Goss.
- Changling Chess. Rooks become Bishops and Bishops become Rooks when moved. By Karl Scherer.
- Chaos. A strange Chess variant designed to baffle onlookers. Inventor: Ron Kensek.
- Chaos Chess. Pieces are placed randomly everywhere on the board before the game starts. (8x8, Cells: 64) By Allen Jett.
- Chaos Chess. Random starting positions. Author: Ed Friedlander. Inventor: Allen Jett.
- Chaotenschach. Players start the game by making a secret setup on their own half of the board. (8x8, Cells: 64) Author: Jörg Knappen.
- Chaotic Chess. Missing description (8x8, Cells: 64) By Patrik Hedman.
- Chasm Chess. Berolina Pawns, reflecting Bishop and Queen, and a chasm in the board! Author: Tony Quintanilla. Inventor: Danielle Allen.
- Chasm Chess. Berolina Pawns, reflecting Bishop and Queen, and a chasm in the board! (8x8, Cells: 64) Author: Danielle Allen Inventor: Danielle Allen.
- Chatter Chess. Variant based on the idea of line chatter where rider pieces can switch to other friendly pieces' lines of movement. (8x8, Cells: 64) By Ralph Betza.
- Chatty Chess. Four-handed game using normal board and pieces. Author: Ed Friedlander. Inventor: Ian Richardson.
- Chaturanga. The first known variant of chess. (8x8, Cells: 64) Author: Fergus Duniho.
- Chaturanga with minor changes. A series of variants based on the (according to many) earliest form of Chess. (8x8, Cells: 64) By Charles Gilman.
- Chazz. Only kings and pawns. Pawns can move backwards. (8x8, Cells: 64)
- Chazz. Only kings and pawns. Pawns can move backwards. Author: Ed Friedlander.
- Chazz . Only kings and pawns. Pawns can move backwards. Author: Uwe Wiedemann.
- Cheapmate Chess. Mate your opponent with an illegal move. (8x8, Cells: 64) By Robert Price.
- Cheapmate Chess . Mate your opponent with an illegal move. Author: Gary Baydo. Inventor: Robert Price.
- Cheapmate Chess. You may make one illegal move in order to checkmate. Author: Ed Friedlander. Inventor: Robert Price.
- Cheapmate Chess . Mate your opponent with an illegal move. By Robert Price.
- Cheapo. Missing description Author: Ed Friedlander.
- Cheaters' Chess. Missing description (8x8, Cells: 64) By Larry L. Smith.
- CHECK 11. 11 different original factions, chosen secretly, each with extra powers when few pieces remain. By Paul Thierry TESSA.
- Check Force Chess. The player giving check decides how the opponent escapes. Author: Ed Friedlander. Inventor: Bruce R Trone.
- Checker-capture Chess. Pieces can capture as in checkers game. (8x8, Cells: 64) By (zzo38) A. Black.
- Checker-Pawn Chess. Pawns are replaced by Anglo-American Checkers pieces. (8x8, Cells: 64) Author: Richard D.B.M. and Peter Aronson. Inventor: Richard D.B.M..
- Checkers Chess. Pieces move initially only forwards. (8x8, Cells: 64) Author: Hans L. Bodlaender. Inventor: Hans Multhopp.
- Checkers Chess. Pieces may not move backwards until they have visited the. Author: Ed Friedlander. Inventor: Hans Multhopp.
- Checkismate. Put the King in check to win. (8x8, Cells: 64) By Andrew LeRoy.
- Checkless Chess. Giving check without mate is not allowed. (8x8, Cells: 64) Author: Hans L. Bodlaender.
- Checkless Chess. You may not check unless it is mate. Author: Ed Friedlander.
- CheGo. Drop chess pieces on the board to control the largest number of squares. (8x8, Cells: 64) By Alfred Pfeiffer.
- Cheshire Cat Chess . When a unit leaves a square, the square vanishes. Author: Marek14 . Inventor: Vernon Rylands Parton.
- Cheshire Cat Chess. When a unit leaves a square, the square vanishes. Author: Ed Friedlander. Inventor: Vernon Rylands Parton.
- Cheshire Cat Chess. Squares are disappearing. (8x8, Cells: 64) Author: Hans L. Bodlaender. Inventor: Vernon Rylands Parton.
- Chesica. Game from the 19th Century combining elements of Checkers and Chess. (8x8, Cells: 64) Author: Peter Aronson. Inventor: Frederick S. Copley.
- Chesica . Game from the 19th Century combining elements of Checkers and Chess. Author: Peter Aronson. Inventor: Frederick S. Copley.
- CHESS 2000. Chess on 8 by 8 board with knight/rook and knight/bishop pieces. (8x8, Cells: 64) By Gerhard Josten.
- Chess 2000 . Chess on 8 by 8 board with knight/rook and knight/bishop pieces. Author: Uwe Wiedemann. Inventor: Gerhard Josten.
- Chess 2000. A program that plays Chess 2000. Inventor: Gerhard Josten.
- Chess 25 (Fischer Placement Chess). Swap king and/or queen before play begins. Follows FRC rules (with zrf). By M Winther.
- Chess 4.5. Missing description (8x8, Cells: 64) By John Kipling Lewis.
- Chess Addresses. Missing description Author: Ed Friedlander. Inventor: Veli Toukomies.
- Chess Draughts. Missing description (8x8, Cells: 64) Author: Ed Friedlander. Inventor: Mannis Charosh.
- Chess in the Round. 1970's commercial variant that allows turning corners with the Rook and Queen. (8x8, Cells: 64) Author: Barry Yoner.
- Chess Is Wild. Pieces acquire special moves in the inner 16 squares. (8x8, Cells: 64) By Peter E. Leyva.
- Chess Latrunculi duo milia et septum. Chess with dragon horse and dragon king movements for bishops and rooks. (8x8, Cells: 64) By Gary K. Gifford.
- Chess Olympic . Kings, Queens and Pawns have additional moves, and victory is by capture instead of checkmate. Author: Peter Aronson. Inventor: Redzo Kolakovic.
- Chess Olympic. Some pieces move differently. (8x8, Cells: 64) By Redzo Kolakovic.
- Chess on Steriods. Pieces increase their powers with those of the pieces they capture. (8x8, Cells: 64) By David Cannon.
- Chess on the Dot. Play this adaptation of Chess to a spherical board on Game Courier. Author: Fergus Duniho. Inventor: Joshua Chou.
- Chess on the Rainbows. Six different colors light up the board. You have to keep a piece on each color throughout... Author: Jeremy Gabriel Good.
- Chess on the Rainbows. Players must retain a piece on all 6 colors of a 6-color board.
- Chess Variants with Inverse Capture. Several variants around the idea that captures are done in the manner of the captured piece. (8x8, Cells: 64) By Ralph Betza.
- Chess with Extended Castle. Standard chess with extended castle rule, effectuating greater opening variance (with zrf). By M Winther.
- Chess with Extra Bishops. FIDE Chess with Extra Pair of Bishops that Start from Same Square. By Jeremy Gabriel Good.
- Chess with Mixed Pawns. Four normal and four Berolina pawns per player. (8x8, Cells: 64) By Ralph Betza.
- Chess with Quantum Bishops. Bishops move orthogonally along both paths and end up where a normal bishop would end up. (8x8, Cells: 64) By (zzo38) A. Black.
- Chess with Reserves. Load your units during the game. Author: Ed Friedlander. Inventor: E. Slater.
- Chess with wickets. The wicket is behind the King's 1. (8x8, Cells: 66) By (zzo38) A. Black.
- Chess without pawns. Variant where only kings can take and no pawns are used. (8x8, Cells: 64) Author: Hans L. Bodlaender. Inventor: Vladislav Rapetsky.
- Chess without pawns . Variant where only kings can take and no pawns are used. Author: Mats Winther. Inventor: Vladislav Rapetsky.
- Chess+. Players choose when and where to place their pieces behind the pawns. Author: Ola Sassersson. Inventor: Nick Bentley and Christian Freeling.
- Chess++. Some pieces are made more powerful, some less. (8x8, Cells: 64) By Paul Keres.
- Chess-Merels. Lining up three units in a row captures the last enemy unit moved. Author: Ed Friedlander. Inventor: Vernon Rylands Parton.
- Chess100. Piece positions are modestly randomized according to Arrangement Chess rules, castling is retained (+ zrf). By M Winther.
- Chess256. The pawns are randomized on the 2nd and 3rd rank. By M Winther.
- Chess400. Piece setup is randomized according to Configuration Chess rules, producing 400 modest, mostly non-mirrored, positions (+ zrf). By M Winther.
- Chess480. Fischer Random Chess with orthodox castling rules. (8x8, Cells: 64) By John Kipling Lewis.
- Chess484. Before play, certain pieces are regrouped, creating natural positions. Castling is retained (+ zrf). By M Winther.
- Chess64. The piece array is moderately randomized according to Relocation Chess rules, castling is retained. By M Winther.
- Chess960.com. Talk about Chess960 with other members. By Calvin Jack Pomerantz.
- Chess960x3. Variant of Chess960. (8x8, Cells: 64) By Hadi Aireche.
- Chessapawn. Game where all pieces move forward and a win is by promoting. (8x8, Cells: 64) By Robert Price.
- Chessapawn . Game where all pieces move forward and a win is by promoting. By Robert Price.
- Chessembly. Open Board Setup, Free Placement Chess. (8x8, Cells: 64) By JT K.
- Chessgi. Captured units become yours to drop onto the board. Author: Ed Friedlander.
- Chessgi. Drop the pieces you take from your opponent. (8x8, Cells: 64) Author: Hans L. Bodlaender.
- Chessgi . Captured units become yours to drop onto the board. Author: Fergus Duniho.
- Chessgi. Play this hybrid of Chess and Shogi. Author: Fergus Duniho.
- Chessling . Variant where the board starts empty and each player can move or drop a piece, and the goal is capture of all opposing pieces. Author: Marek14 . Inventor: How-Hie Ling.
- Chessling. Variant where the board starts empty and each player can move or drop a piece, and the goal is capture of all opposing pieces. Author: Peter Aronson. Inventor: How-Hie Ling.
- ChessNim. Drop chess pieces and reduce the number of unattacked squares on the board. Author: Doug Chatham. Inventor: Alfred Pfeiffer.
- ChessNim. Drop chess pieces and reduce the number of unattacked squares on the board. (8x8, Cells: 64) By Alfred Pfeiffer.
- ChessVariants.zrf. 17 variants in 1 file. By (zzo38) A. Black.
- Chess_AB. Pawns may move backwards; and may promote to captured pieces. (8x8, Cells: 64) By Redzo Kolakovic.
- Chicken Chess. Combines Losing and Benedict Chess. (8x8, Cells: 64) Author: Topher Gayle. Inventor: Topher Gayle and Tom Tracy.
- Chigorin Chess. White has knights instead of bishops and a chancellor for his queen; black has bishops instead of knights. (8x8, Cells: 64) By Ralph Betza.
- Chigorin Chess. White has knights instead of bishops and a chancellor for his queen; black has bishops instead of knights. Author: Peter Aronson. Inventor: Ralph Betza.
- Chimera Chess. The highlight of this chess variant are the Chimera pieces, which are substantially enhanced versions of the orthodox Knight. By Albert Lee.
- Chinese Checkers Chess . Some pieces may make multiple jumps as in Chinese Checkers. By Ken Franklin.
- Chivalrous Attrition. Two knights jump over and may not go to visited squares. (8x8, Cells: 64) Inventor: William F. Bultas.
- Chogi. A step further further to shogi from chess. (8x8, Cells: 64) By Andy Maxson.
- Choice chess. Propose five moves and your opponent selects one for you. (8x8, Cells: 64) Author: Hans L. Bodlaender. Inventor: Fred Galvin.
- Chosen Chess. Move a piece you chose last turn, then choose a piece to move next turn. (8x8, Cells: 64) By Gianni Cottogni.
- Chosen Chess. Move a piece you chose last turn, then choose a piece to move next turn. Author: Peter Aronson. Inventor: Gianni Cottogni.
- Church Chess. Seven Bishops replace all backrow pieces other than the King. Author: Ed Friedlander.
- Chutes and Ladders Chess. Game played on two boards with two sets with user placed and removed chutes and ladders connecting the boards. (8x8, Cells: 64) By Ralph Betza.
- Circe Chess. Classic variant in which pieces are returned to their squares of origin if possible. Author: Ed Friedlander. Inventor: Pierre Monréal.
- Circe Chess. Captured pieces return to their original square. (8x8, Cells: 64) Author: Hans L. Bodlaender. Inventor: Pierre Monréal.
- Circe Chess problem 1. Series selfmate circe chess problem. Author: Hans L. Bodlaender. Inventor: George P. Spicas.
- Circe Chess problem 2. Helpstalemate circe chess problem. Author: Hans L. Bodlaender. Inventor: Michel Caillaud.
- Circe Progressive Chess. Progressive variant where captured pieces return to their original square. Author: Ed Friedlander. Inventor: Roberto Gravino.
- Circe Progressive Chess. The usual way in which Circe chess is played today. Author: Ed Friedlander. Inventor: Roberto Gravino.
- Circe Progressive Chess. Combination of Circe and Progressive Chess. (8x8, Cells: 64) Author: Hans L. Bodlaender.
- Circe Vulcanici. Progressive Circe chess, units returning as in the non-progressive game, waiting if needed until the square becomes available. Author: Ed Friedlander. Inventor: Roberto Gravino.
- Citadel. Missing description Author: Ed Friedlander.
- Claustrophobia Chess. game is lost if King has no space to move. By Thomas .
- Cleopatra Chess. No captures, but your Cleopatra (Queen) can seduce opposing pieces to your side. (8x8, Cells: 64) By Dan Troyka.
- Cleopatra Chess . No captures, but your Cleopatra (Queen) can seduce opposing pieces to your side. By Dan Troyka.
- Cleopatra Chess. No captures, but your Cleopatra (Queen) can seduce opposing pieces to your side. Author: Ed Friedlander. Inventor: Dan Troyka.
- Cleopatra Chess. Dan Troyka game, similar to Benedict Chess but with only one color-changing piece. Cleopatra "seduces" any piece she sees. Author: Jeremy Gabriel Good. Inventor: Dan Troyka.
- Clockwork Orange Chess. Condition your opponent's pieces to be non-violent. By Fergus Duniho.
- Clockwork Orange Chess. Captured pieces are replaced with non-capturing counterparts. (8x8, Cells: 64) By Fergus Duniho.
- Closing Time. During certain turns, you must move pieces out of a central area of the board (`the pub'). (8x8, Cells: 64) By Ralph Betza.
- Co-Regal Chess. Take the enemy King/Queen and checkmate the remaining monarch to win. By Tank .
- Coalition. Missing description Author: Ed Friedlander. Inventor: Tony Paletta.
- Codrus. Missing description Author: Ed Friedlander.
- Cohen's Error Chess. Columbia Cannon Chess, only with Korean style cannons. Author: Ed Friedlander.
- Cold War Chess. A long and very challanging game against all odds. By Kutasi Márton.
- Colorbound. Missing description By Ed Friedlander.
- Colorbound Chess. Pieces never change their squares’ color, so army is divided into two halves – attacking and defending. (8x8, Cells: 64) By Lev Grigoriev.
- Colorboundmost and Nearly Colorboundmost Chess. Games with all pieces either completely or almost completely colorbound. (8x8, Cells: 64) By Ralph Betza.
- Colour Chess. Pieces paint the squares they leave, allowing other pieces to move as them. (8x8, Cells: 64) By John Smith.
- Columbia Cannon. Missing description Author: Ed Friedlander.
- Combat Chess II. A wargame-like chess variant. (8x8, Cells: 64) By John Garwood.
- Combined Arms Brigade Chess. New movement for traditional Chess pieces with a modern military theme. (8x8, Cells: 64) By Saleh Waziruddin.
- Combining Knightmare Chess . When a single piece other than a Pawn or a King captures, it combines with that piece into a Knightmare either side may move. By Peter Aronson.
- Combining Knightmare Chess. When a single piece other than a Pawn or a King captures, it combines with that piece into a Knightmare either side may move. (8x8, Cells: 64) By Peter Aronson.
- Combo Modern Day Chess. Guard replaces the Queen. (8x8, Cells: 64)
- Commando Pawn Chess . Once a Pawn crosses the midpoint of the board, it moves like a Berolina Pawn. Author: Marek14 . Inventor: Tony Paletta.
- Communist Chess. When you capture an opponent's piece, you must destroy one of your own pieces of the same type. (8x8, Cells: 64) By (zzo38) A. Black.
- Companion Chess. Missing description (8x8, Cells: 64) By Stephane Burkhart.
- Complicacious Chess. Variant in which Chess piece change type. (8x8, Cells: 64) Author: Fergus Duniho. Inventor: Vernon Rylands Parton.
- Compromise Chess. Propose two moves and your opponent selects one for you. (8x8, Cells: 64) Author: Hans L. Bodlaender. Inventor: Fred Galvin.
- Conditional Chess. In addition to a normal move, a player states a move that is executed if a certain condition holds. (8x8, Cells: 64) By João Pedro Neto.
- Configuration Chess. Some pieces are rearranged before play begins, thus enhancing opening ramification (with zrf). By M Winther.
- Configuration Chess. King and queen swap with other pieces before play begins - enormous variety! (with zrf). By M Winther.
- Confusion Chess 1b. Every piece is replaced by something roughly equivalent that moves strangely. (8x8, Cells: 64) By Ralph Betza.
- Confusion Chess1b . Every piece is replaced by something roughly equivalent that moves strangely. Author: Peter Aronson. Inventor: Ralph Betza.
- Connect Chess. Players win by forming a link between the first and last ranks of the board. (8x8, Cells: 64) By João Pedro Neto.
- Connect Chess. Win by connecting the opposite ranks with a chain of mutually supporting units. Inventor: João Pedro Neto.
- Connected Chess. Pieces are removed when they are no longer adjacent to any other piece. By Dan Troyka.
- Conquest ®. A popular board game, designed and marketed by Donald Benge. (8x8, Cells: 64)
- Construction. Chess pieces are modelled after construction vehicles. (8x8, Cells: 64) Author: Karl Kristianson.
- The Consuls. Chess with two Kings and Pawns that can capture as Bishop, Knight, and Rook on the enemy side. By Albert Lee.
- Contact Chess. Connecting pieces enhances movement, attack and defense. Powerful pawns and kings. By John Gallez.
- Contemporary Random Chess. Missing description (8x8, Cells: 64) By Jose Carrillo.
- Contemporary Random Chess. Missing description By Jose Carrillo.
- Continental Chess. Continental Chess is Chess Variations with many types of pieces such as stepper, leaper, hopper and rider. (8x8, Cells: 64) By Siwakorn Songrag.
- Contramatic Chess. This king can walk right into check! The goal for this king is to get checkmated. Author: Jeremy Gabriel Good. Inventor: Vernon Rylands Parton.
- Contramatic Chess. You must not check the opposing king, or leave him in check. Author: Ed Friedlander. Inventor: Vernon Rylands Parton.
- Contrast Chess. Pieces lose or gain strength depending on the colour of the square they stand on. (8x8, Cells: 64) By David Howe.
- Conversion Chess. A co-chess variant. (8x8, Cells: 64) Author: Alessandro Castelli. Inventor: Ralph Betza.
- Coregal Chess. King and Queen(s) are royal. Author: Ed Friedlander. Inventor: Vernon Rylands Parton.
- Coregal Chess . Both kings and queens are royal. Author: Uwe Wiedemann. Inventor: Vernon Rylands Parton.
- Coregal Chess. Both kings and queens are royal. (8x8, Cells: 64) Author: Hans L. Bodlaender. Inventor: Vernon Rylands Parton.
- Coregal Chess 2. King and Queen(s) are royal. Queens may not cross a square under attack. Author: Ed Friedlander. Inventor: Vernon Rylands Parton.
- Corner Chess. Two or four player chess variant on 8 by 8 board with pieces starting in the corners. (8x8, Cells: 64) By Rich Hutnik.
- Corner Chess II. Tony Paletta's modern version of Farmer's Chess. Author: Ed Friedlander. Inventor: Tony Paletta.
- Corner Rooks Skirmish. All pieces except the Rooks are pushed forward a rank. Author: Ed Friedlander.
- Corner-square chess. Taking is only allowed when your king is on a cornersquare. (8x8, Cells: 64) Author: Hans L. Bodlaender. Inventor: Henk Breugem.
- Corridor Chess. FIDE but subtracting rook pawns and setting pieces up in house in middle. Author: Jeremy Gabriel Good. Inventor: Tony Paletta.
- Corridor Chess. Setup by Tony Paletta. Author: Ed Friedlander. Inventor: Tony Paletta.
- Cost Progressive Chess. Pieces cost varing amounts of movement points to move, and each turn you get more movement points to move them with. (8x8, Cells: 64) By Sergey Sirotkin.
- Cotati Chess. Promotion of a Pawn wins the game. (8x8, Cells: 64) By Evan Koch.
- Countdown Queens. Each queen can make at most 7 moves in the whole game.
- Counter Chess. Units may not capture those taller than they are. Author: Ed Friedlander. Inventor: Karl O. Hill.
- Coward Chess . King captures usual/moves a sq. only by switching places. By Ken Franklin.
- Crab Chess (Chess4). Blocked flank pawns are have an additional jump move to empty square (with zrf). By M Winther.
- Crazyhouse. A two-player version of Bughouse. (8x8, Cells: 64) (Recognized!) Author: Fergus Duniho.
- Crazyhouse. Play this two-player version of Bughouse. (Recognized!) Author: Fergus Duniho.
- Crazyhouse Chess. One-board Bughouse. Author: Ed Friedlander.
- Creative Chess. Load your own units as you like. Author: Ed Friedlander. Inventor: Marve Meirovitz.
- Cripple Chess. The king may move only to capture. Author: Ed Friedlander. Inventor: David B. Pritchard.
- Crowd Chess 1: Safety in Numbers. More pieces can occupy the same square - you can only form or move to a crowd by a non-capturing move. (8x8, Cells: 64) By Ralph Betza.
- Crowd Chess 2: All Go Together. More pieces can occupy the same square and share the same fate. (8x8, Cells: 64) By Ralph Betza.
- Crown. Players secretly decide whether their king or queen (who moves like the king) is royal. Inventor: L. U. Kisljuk.
- Crown Chess. Place your own units on the board, starting with the king,. Author: Ed Friedlander.
- Crown Prince Chess. One Knight on each side is replaced by a Crown Prince. (8x8, Cells: 64) Inventor: Matthew Chrzaszcz and Derek Mota.
- Crown Prince Chess. Missing description Author: Ed Friedlander. Inventor: Matthew Chrzaszcz.
- Cruise Pawns. Pawns can shoot away like cruise missiles. (8x8, Cells: 64) By Terry H. Jones.
- Crush Chess. After every 10 moves, the perimeter disappears. Author: Ed Friedlander.
- Crushed Chess. After every 10 turns, the perimeter disappears. Author: Ben M Reiniger.
- csipgs Chess. Design and buy new chess pieces during play. (8x8, Cells: 64) By Ralph Betza.
- Cursed Chess. Squares where a piece is taken become forbidden for the capturing player. (8x8, Cells: 64) By Jeremy Dunn.
- Cursed Chess. Squares where you have slain an enemy become uncrossable. Author: Ed Friedlander. Inventor: Jeremy Dunn.
- Cylinder Chess. First and eighth files connect. Author: Ed Friedlander.
- Cylinder Chess. Play Cylindrical Chess on Jocly. Author: Michel Gutierrez and Jérôme Choain.
- A Cylinder chess puzzle - 1. Missing description Author: Hans L. Bodlaender. Inventor: A. Piccinini.
- A Cylinder chess puzzle - 2. Missing description Author: Hans L. Bodlaender. Inventor: A. W. Mongredien.
- Cylindrical Chess. Sides of the board are supposed to be connected. Author: Antoine Fourrière and Fergus Duniho.
- Cylindrical Chess. Sides of the board are supposed to be connected. (8x8, Cells: 64) Author: Greg Strong.
- Czech Chess. Drop pawns by checking the King. (8x8, Cells: 64) By Adrian Alvarez de la Campa.
- d4 d6 chess. Dice determine the number of steps you can move with your piece. (8x8, Cells: 64) By Maurice Dekker.
- Dabbaba. Freeware program playing chess and a number of chess variants. Author: Hans L. Bodlaender and Jens Baek Nielsen. Inventor: Jens Baek Nielsen.
- Davis Variation of Suicide Chess. Win by checkmate or by loosing your pieces. (8x8, Cells: 64) By Michael D. Davis.
- Dead Square . When pieces take, the square becomes impassible and all surrounding pieces disappear. Author: Marek14 . Inventor: Jason Shields.
- Decisive Chess. Chess, but replacing draw rules with win/loss rules. By Iwer Sonsch.
- Deep Blue versus Kasparov. White and Black each have their own way of winning.