Items Authored by Ed Friedlander
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- Absorption Chess. Capturer gains movement abilities. Author: Ed Friedlander.
- Absorption Chess II. Capturer gains movement abilities. This applet extends this to kings and pawns. Author: Ed Friedlander.
- Abstract Chess. Pieces are represented by stacks of different heights. Author: Ed Friedlander. Inventor: João Pedro Neto.
- Accelerated Chess. Two non-capturing moves, or one capturing move, each turn. Author: Ed Friedlander. Inventor: Tony Paletta.
- Active Chess. Two queens, 9x8. Author: Ed Friedlander. Inventor: G. Kuzmichov.
- Actuated Rotating Center Chess. Center rotates, you choose when and how. Author: Ed Friedlander. Inventor: A. E. Farebrother and W. H. Rawlings.
- Advance Chess. Pawns begin on third and sixth ranks. Author: Ed Friedlander. Inventor: Tony Paletta.
- Airplane Chess. Airplanes move as queens any distance, capturing by landing just beyond an enemy unit. Author: Ed Friedlander. Inventor: R. Wayne Schmittberger.
- Akenhead's Chess. Chinese pieces and Berolina pawns. Author: Ed Friedlander. Inventor: J. Akenhead.
- Alapo. Simplified game. Author: Ed Friedlander. Inventor: Johannes Tranelis.
- Alice Chess. Looking-glass boards. Extremely popular variant. Author: Ed Friedlander. Inventor: Vernon Rylands Parton.
- Alice Chess II. Alice Chess with armies starting on opposite boards. Author: Ed Friedlander. Inventor: Vernon Rylands Parton.
- 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.
- Alliance Chess. Two boards, four players, team wins by checkmating the primary player. Author: Ed Friedlander. Inventor: Mark Liptak and Rick Babcock.
- Almost Chess. The queen may move as a knight or rook but not as a bishop. Author: Ed Friedlander. Inventor: Ralph Betza.
- Alternating Chess III. Each side alternates between moving pawn and piece. Author: Ed Friedlander.
- Alternation Chess. You alternate your moves with a partner. Author: Ed Friedlander.
- Amazon Chess. The queen may also move as a knight. Author: Ed Friedlander.
- Amazon Knights Chess. The queen may also move as a knight, and rooks and bishops. Author: Ed Friedlander.
- Ambi-Chess. Large board with two kings, move a member of each of two armies each turn. Author: Ed Friedlander. Inventor: Vernon Rylands Parton.
- Ambi-Chess II. Missing description Author: Ed Friedlander. Inventor: Vernon Rylands Parton.
- American Kriegspiel. With help of a referee, 2 players move w/o knowing the moves of the opponent, but know where P's can capture & what enemy fo. Author: Ed Friedlander.
- Angel Chess. 9x8 board. Angels (Q+N) are difficult to exchange. Author: Ed Friedlander. Inventor: L. P. D'Autremont.
- 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-Gravity Chess. A newly-moved unit repels the nearest unit along each. Author: Ed Friedlander. Inventor: João Pedro Neto.
- 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. 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 Chess. Like colors attract, opposites repel, along orthogonal lines. Author: Ed Friedlander. Inventor: João Pedro Neto.
- Anticipation Chess. Commit after moving to which kind of unit you will move next. Author: Ed Friedlander. Inventor: Raymond Pink.
- 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.
- Apocalypse Mini-Chess. Miniature version with four horsemen. Author: Ed Friedlander. Inventor: C. S. Elliott.
- Archimedes Chess. Capture by attacking an enemy unit with two of yours. Author: Ed Friedlander. Inventor: Philip M. Cohen.
- Arena Chess. Entry in the 32-move-maximum contest. Author: Ed Friedlander. Inventor: Jeff Kiska.
- Arktur Chess. Random first ranks, two kings. Author: Ed Friedlander. Inventor: Peter Riessen.
- Arrow Pawn Chess. Pawns do not promote but have expanded moves. Author: Ed Friedlander. Inventor: R. Persson.
- 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. 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.
- Atlantis Chess. You may sink an edge square instead of moving a unit. Author: Ed Friedlander. Inventor: Gerben Dirksen.
- Atomic Pawn Chess. One time in ten, a pawn explodes just after moving. Author: Ed Friedlander.
- Avalanche Chess. Advance the opponent's pawns. Popular variant. Author: Ed Friedlander. Inventor: Ralph Betza.
- Avalanche Chess 2. As before, except that the red king and queen are switched. Author: Ed Friedlander. Inventor: Ralph Betza.
- Aviation Chess. Knight pawns move and capture as bishops and can leap any number of units. Author: Ed Friedlander. Inventor: L. Legan.
- Bachelor Chess. All pieces promote. Win in the usual way or by joining king and queen. Author: Ed Friedlander. Inventor: Doug Chatham.
- Balaklava Chess. All non-royal units can make non-capturing knight moves. Author: Ed Friedlander. Inventor: Gianluca Vecchi.
- Balbo's Chess. Odd-shaped board, bishops as powerful as knights. Author: Ed Friedlander. Inventor: M G Balbo.
- 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.
- Bank of Scotland -- Modern Branch. Progressive Variant where each check gives a player another move, and move is ended by check or move to defended square. Author: Ed Friedlander. Inventor: Bob Bruce and Bruce R Trone.
- Bankhouse Chess. Missing description Author: Ed Friedlander.
- Barasi Chess. Pieces cannot move backwards; pawns are Berolina. Author: Ed Friedlander. Inventor: Paul Barasi.
- Bastardo. Cut-throat four-player variant. Author: Ed Friedlander.
- Bastardo for President. Cut-throat four-player variant where one of your pieces is secretly President and thus royal. Author: Ed Friedlander.
- Bastardo Hallowe'en. Halloween-themed cut-throat four-player variant. Author: Ed Friedlander.
- 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.
- Bear Chess. Russian variant with new piece. Author: Ed Friedlander. Inventor: Mikhail Sosnovsky.
- 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. Author: Ed Friedlander. Inventor: Dan Troyka.
- 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 Grid Chess. Popular with NOST. Author: Ed Friedlander.
- Besiege Chess. Large variant with White on either side, Black in center. Author: Ed Friedlander. Inventor: Köksal Karakus.
- Bicapture Chess. You may capture, and be checked by, your own units. Author: Ed Friedlander.
- Big Board Chess. Large set with setup phase. Author: Ed Friedlander. Inventor: Alfred Schönfelder.
- Billiards Chess. Bishops and queens bounce off the edges. Author: Ed Friedlander.
- Bird's Chess. Large variant by the grandmaster. Author: Ed Friedlander. Inventor: Henry Bird.
- Bishop Chess. Bishops do not capture and cannot be captured. Author: Ed Friedlander.
- Black and White Chess. Two moves per turn, the first from a white square, the second. Author: Ed Friedlander. Inventor: Vernon Rylands Parton.
- Black Hole Chess. Pieces moved to the center four squares of the board fall into your hand. Author: Ed Friedlander. Inventor: Karl Scherer.
- Blackburne's Proposal. QR becomes a marshall, QB becomes a pegasus, and KB becomes a queen are enhanced. Author: Ed Friedlander. Inventor: S. S. Blackburn.
- Blackjack Chess. If the point value of your remaining units totals 21, you win. Author: Ed Friedlander. Inventor: Henk Breugem.
- Blind Shogi. Missing description Author: Ed Friedlander.
- 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.
- 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.
- Booster Chess. Pawns push friendly pieces. Author: Ed Friedlander. Inventor: Tony Paletta.
- Brickchucking Chess. Pieces can only move forward, but attack the king in any direction. Author: Ed Friedlander. Inventor: Alan Holloway and Gary Smith.
- Brotherhood Chess. A piece cannot capture one of its own kind. Author: Ed Friedlander. Inventor: Gianluca Vecchi.
- Brusky's Hexagonal Chess. Hexagonal variant from the 1960's. Author: Ed Friedlander. Inventor: Yakov Brusky.
- Buczo's Chess. Large board game with extra Knights and underpromotion available on 8th and 9th ranks. Author: Ed Friedlander. Inventor: Tony Buczo.
- Bug Eyed Monster Chess. A non-royal unit may make any move which, in FIDE chess, some other. Author: Ed Friedlander.
- Bughouse Chess. Two boards. Units captured move to opposite board. Popular variant. Author: Ed Friedlander.
- Burmese Chess. Most popular form in Burma. Author: Ed Friedlander.
- Butters Chess. Capture by moving adjacent rather than by displacement. Author: Ed Friedlander.
- Byzanatine Chess. Circular 16x4 Shatranj variant. Author: Ed Friedlander.
- Byzanatine Chess II. A different account of the old circular game. Author: Ed Friedlander.
- Caïssa. Christian Freeling's game with a royal queen. Author: Ed Friedlander. Inventor: Christian Freeling.
- Cambodian Chess. Historic 9x9 game. Author: Ed Friedlander.
- 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.
- Cannon Chess. Rooks and Bishops move and capture after the style of Chinese cannons. Author: Ed Friedlander.
- Capablanca Chess. 8x10 board variant by the grandmaster. Author: Ed Friedlander. Inventor: Jose Raul Capablanca.
- Capablanca Chess 10x10. 10x10 board variant by the grandmaster. Author: Ed Friedlander. Inventor: Jose Raul Capablanca.
- 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.
- 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.
- Capturing Progressive Chess. Scotch Chess, but if no capture is made the count drops back to one. Author: Ed Friedlander.
- CardChess for Four. Utilizes the two key elements of card games: four suits and the ability to place cards face down to hide their values. Author: Ed Friedlander.
- CardChess for Teams. Utilizes the two key elements of card games: four suits and the ability to place cards face down to hide their values. Author: Ed Friedlander.
- CardChess for Three. Utilizes the two key elements of card games: four suits and the ability to place cards face down to hide their values. Author: Ed Friedlander.
- CardChess for Two. Utilizes the two key elements of card games: four suits and the ability to place cards face down to hide their values. Author: Ed Friedlander.
- Carnivore Chess. Each turn, also move an uncapturable predator. Author: Ed Friedlander.
- Carrera Chess. 10x8 version described in 1617. Author: Ed Friedlander. Inventor: D. Pietro Carrera.
- Cavalier Chess. All pieces except queens have some kind of knight-movement. Author: Ed Friedlander. Inventor: Fergus Duniho.
- Cavalry Chess. Enhanced moves for all pieces. Author: Ed Friedlander. Inventor: Frank Maus.
- 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.
- Chad. Christian Freeling's simple game of complex strategy. Author: Ed Friedlander. Inventor: Christian Freeling.
- Chameleon Chess. Begin with 16 pawns which evolve. Author: Ed Friedlander. Inventor: Sergey Sirotkin.
- Chance Chess. Randomizer determines what units you may move. Free move out of check. Author: Ed Friedlander.
- Chancellor Chess. Classic 9x9 board with rook-knight. Author: Ed Friedlander. Inventor: Ben R. Foster.
- Chaos Chess. Random starting positions. Author: Ed Friedlander. Inventor: Allen Jett.
- Chatty Chess. Four-handed game using normal board and pieces. Author: Ed Friedlander. Inventor: Ian Richardson.
- Chaturanga. Oldest known form of chess. Author: Ed Friedlander.
- Chaturanga for Four. Ancient partnership game, sometimes said to be the. Author: Ed Friedlander.
- Chaturanga for Four -- Machiavellian Version. Cutthroat new version. Author: Ed Friedlander. Inventor: John Zimmerman.
- Chazz. Only kings and pawns. Pawns can move backwards. Author: Ed Friedlander.
- Cheapmate Chess. You may make one illegal move in order to checkmate. Author: Ed Friedlander. Inventor: Robert Price.
- Cheapo. Missing description Author: Ed Friedlander.
- Check Force Chess. The player giving check decides how the opponent escapes. Author: Ed Friedlander. Inventor: Bruce R Trone.
- Checkers Chess. Pieces may not move backwards until they have visited the. Author: Ed Friedlander. Inventor: Hans Multhopp.
- Checkless Chess. You may not check unless it is mate. Author: Ed Friedlander.
- Chelma. A cross between Chess and Halma. Author: Ed Friedlander. Inventor: Andy Lewicki.
- Cheshire Cat Chess. When a unit leaves a square, the square vanishes. Author: Ed Friedlander. Inventor: Vernon Rylands Parton.
- Cheshire Cat Chess, 10 x 10. Missing description Author: Ed Friedlander. Inventor: Vernon Rylands Parton.
- Cheskers. The most popular cross between checkers and chess. Author: Ed Friedlander. Inventor: Solomon W. Golomb.
- 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 Third Dimension. Three-D proprietary game from Skor-Mor. Author: Ed Friedlander.
- Chess Variant Applets. Ed Friedlander's Chess variants applet site. Author: Ed Friedlander.
- Chess with Reserves. Load your units during the game. Author: Ed Friedlander. Inventor: E. Slater.
- Chess-Merels. Lining up three units in a row captures the last enemy unit moved. Author: Ed Friedlander. Inventor: Vernon Rylands Parton.
- Chessapeak Four-Handed Chess. Based on Chessapeak Challenge, arguably the best commercial four-player chess game. Author: Ed Friedlander.
- Chessenat. Game from Columbia with custodial captures. Author: Ed Friedlander.
- Chessence. Units move and capture depending on their proximity to their colleagues. Author: Ed Friedlander. Inventor: Jim Winslow.
- Chessers. Pieces may ride pawns to the end ranks. Author: Ed Friedlander. Inventor: Frank Maus.
- Chessgi. Captured units become yours to drop onto the board. Author: Ed Friedlander.
- Chessky. Dice rolls determine how the units move. Author: Ed Friedlander.
- ChessMatch. Chess variant with a hand of cards that allow movement. Author: Ed Friedlander. Inventor: Wayne Eberhart.
- Chex. Cards with pieces form the board. Author: Ed Friedlander. Inventor: David L. Smith.
- Chimera Chess. Chimeras cannot capture or be captured, but swap positions with the enemy units. Author: Ed Friedlander. Inventor: Vernon Rylands Parton.
- Chinese Chess (Xiangqi). Number of players is probably comparable to FIDE chess players. Author: Ed Friedlander.
- Chitty-Chatty Chess. Four-handed partnership game intended to introduce newcomers to Chess. Author: Ed Friedlander. Inventor: Ian Richardson.
- Choiss. Starting with a 2x2 center, players assemble a 64 square board of any shape before play. Author: Ed Friedlander. Inventor: Peter A. Victor.
- Church Chess. Seven Bishops replace all backrow pieces other than the King. Author: Ed Friedlander.
- Ciccolini's Chess. Large variant from the early 1800's. Author: Ed Friedlander. Inventor: Guiseppi Ciccolini.
- Cincinnati Four-Way Chess. Four player chess variant from Cincinnati. Author: Ed Friedlander.
- Circe Chess. Classic variant in which pieces are returned to their squares of origin if possible. Author: Ed Friedlander. Inventor: Pierre Monréal.
- 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 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.
- Circean Chess. Large variant in which pawns evolve into kings. Author: Ed Friedlander. Inventor: Vernon Rylands Parton.
- Circular. Missing description Author: Ed Friedlander. Inventor: Dave Reynolds.
- Citadel. Missing description Author: Ed Friedlander.
- Citadel Chess. A variant of Shatranj, played on a ten by ten board with four extra citadels. Author: Ed Friedlander.
- Cleopatra Chess. No captures, but your Cleopatra (Queen) can seduce opposing pieces to your side. Author: Ed Friedlander. Inventor: Dan Troyka.
- Clockwork Orange Chess. Captured pieces are replaced with non-capturing counterparts. Author: Ed Friedlander. Inventor: Fergus Duniho.
- 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.
- Coin. Missing description Author: Ed Friedlander.
- Colorbound. Missing description By Ed Friedlander.
- Columbia Cannon. Missing description Author: Ed Friedlander.
- Compact Chess. Small version popular in South Africa. Author: Ed Friedlander.
- Compromise Chess. If you have two legal moves, your opponent may. Author: Ed Friedlander.
- Confederation Chess. Two pieces can fuse into a stronger unit, and can dissociate. Author: Ed Friedlander. Inventor: Frank Maus.
- Congo. Animals fight on 7 by 7 board. Author: Ed Friedlander. Inventor: Christian Freeling.
- Contramatic Chess. You must not check the opposing king, or leave him in check. Author: Ed Friedlander. Inventor: Vernon Rylands Parton.
- Conversion Chess. I chose this one to represent the entire family of co-chess. Author: Ed Friedlander. Inventor: Ralph Betza.
- Coregal Chess. King and Queen(s) are royal. Author: Ed Friedlander. 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. Fast-paced variant without pawns. Author: Ed Friedlander. Inventor: Derek Nalls.
- 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.
- Coronation Chess. Bishop and rook can fuse to replace the queen. Author: Ed Friedlander.
- Corridor Chess. Setup by Tony Paletta. Author: Ed Friedlander. Inventor: Tony Paletta.
- Counter Chess. Units may not capture those taller than they are. Author: Ed Friedlander. Inventor: Karl O. Hill.
- Courier Chess. Early German version. Author: Ed Friedlander.
- Crazyhouse Chess. One-board Bughouse. Author: Ed Friedlander.
- Creation Chess. Pieces on the far rank may give birth to hybrids. Author: Ed Friedlander. Inventor: Bruce Trove.
- Creative Chess. Load your own units as you like. Author: Ed Friedlander. Inventor: Marve Meirovitz.
- Credo Chess for Three. Hexagonal chess variant from St Albans, UK. Author: Ed Friedlander.
- Credo Hexagonal Chess ("Rose Chess"). Hexagonal chess variant from St Albans, UK. Author: Ed Friedlander.
- Cripple Chess. The king may move only to capture. Author: Ed Friedlander. Inventor: David B. Pritchard.
- Cross Chess. Popular in Australia. Author: Ed Friedlander. Inventor: Leigh Miller.
- Crown Chess. Place your own units on the board, starting with the king,. Author: Ed Friedlander.
- Crown Prince Chess. Missing description Author: Ed Friedlander. Inventor: Matthew Chrzaszcz.
- Crush Chess. After every 10 moves, the perimeter disappears. Author: Ed Friedlander.
- Cuban Chess. 10x10 variant from Havana with Vampire Bats that move as King, Knight or Zebra. Author: Ed Friedlander. Inventor: German A. Mentz.
- Cursed Chess. Squares where you have slain an enemy become uncrossable. Author: Ed Friedlander. Inventor: Jeremy Dunn.
- Cutthroat ForChess. Four players, each playing alone, on an ordinary board. Author: Ed Friedlander. Inventor: Mark Rogers.
- Cylinder Chess. First and eighth files connect. Author: Ed Friedlander.
- Dabbabante Chess. 2,0 runner need not stop for intervening units. Author: Ed Friedlander. Inventor: Vernon Rylands Parton.
- Dark Chess. You have only limited information on where your opponents pieces are. Author: Ed Friedlander. Inventor: Jens Baek Nielsen.
- Dark Chess II. You have only limited information on where your opponents pieces are. Author: Ed Friedlander. Inventor: Jens Baek Nielsen.
- Dead Square Chess. Captures destroy both units, the square, and all neighbors. Author: Ed Friedlander.
- Decimal Four-Player Chess I. Checkmate either opposing teammate for the win. Author: Ed Friedlander. Inventor: Vernon Rylands Parton.
- Decimal Four-Player Chess II. Checkmate either oppoenent for the win. Author: Ed Friedlander. Inventor: Vernon Rylands Parton.
- Decimal Four-Player Chess III. Checkmate either opponent for the win. Author: Ed Friedlander. Inventor: Vernon Rylands Parton.
- Decimal Four-Player Chess IV. Checkmate either opponent for the win. Author: Ed Friedlander. Inventor: Vernon Rylands Parton.
- Defender Pawn Chess. Pawns can move (but not capture) any distance backwards. Author: Ed Friedlander.
- Defensive Chess. White king is not royal, and Red units (except king) cannot go beyond the midline. If White has not won by 50 moves, Red wins. Author: Ed Friedlander.
- Deployment Chess. Place units on markers which disappear if crossed by a friend. Author: Ed Friedlander.
- Desertion Chess. When you move next to opposing pieces, they desert to your side; win by converting or capturing all opposing pieces. Author: Ed Friedlander. Inventor: Uwe Wiedemann.
- Detente 007. You move three times in sequence, the middle one being an enemy unit. Author: Ed Friedlander.
- Diagonal Quadrant Chess. Different setup and pawn moves. Author: Ed Friedlander. Inventor: Ian Storz.
- Diamond Chess. Normal set and board, different setup and pawn moves. Author: Ed Friedlander.
- Diamond Chess II. Game on diamond-shaped board with 98 triangular cells. Author: Ed Friedlander. Inventor: Bart D. Follis and James G. Chapman.
- Diana Chess. Miniature chess game from the late 1800's. Author: Ed Friedlander. Inventor: ? Hopwood.
- Dice Chess I. Move the unit indicated by the roll of a six-sided die. Author: Ed Friedlander.
- Dice Chess V. If you cannot move the unit shown on the six-sided die,. Author: Ed Friedlander. Inventor: Paul Movak.
- Discreet Kriegspiel. Kriegspiel with no information about pawn captures or checks; win by capturing the opposing king. Author: Ed Friedlander.
- Disguised King I. A secret royal pawn must be protected. Author: Ed Friedlander. Inventor: Henk Breugem.
- Disguised King II. Win by capturing the secret royal pawn. Author: Ed Friedlander. Inventor: Hans L. Bodlaender.
- Displaced Grid Chess. A Grid Chess variant that allows kings to visit corners, etc. Author: Ed Friedlander. Inventor: Doug Grant.
- Dodo Chess. Win by getting your king to the opposite side. Author: Ed Friedlander.
- Domination Chess. Win by occupying the center. Author: Ed Friedlander.
- Don't Cross Midnight. Chess on a rotating planet; units may not cross the International. Author: Ed Friedlander. Inventor: Claude Chaunier.
- Double Chess. Play two Orthochess games at the same time, moving in either each move. Author: Ed Friedlander.
- Double Knight Chess I. A second pair of knights replaces the bishops. Author: Ed Friedlander.
- Double Knight Chess II. A knight not capturing may move again at once. Author: Ed Friedlander.
- Double Move Chess #1. Move twice per turn, win by capture not checkmate. Author: Ed Friedlander. Inventor: Fred Galvin.
- Double Move Chess #2. Move twice per turn, win by capture not checkmate, check or mate ends turn. Author: Ed Friedlander.
- Double Move Chess #3. Move twice per turn with the same piece. Author: Ed Friedlander.
- Double Trouble Chess. White has only king and bishop but moves twice per turn. Author: Ed Friedlander.
- DoubleWide Chess. Variant where two complete chess sets (including two Kings per side) are set up on a doublewide board. Author: Ed Friedlander.
- Dragonfly Chess. Small version with pieces in hand. Author: Ed Friedlander.
- The Duke of Rutland's Chess. 14x10 version. Author: Ed Friedlander. Inventor: John Third Duke of Rutland.
- Dunsany's Chess. One side has 32 pawns instead of the usual pieces. Author: Ed Friedlander.
- Duo Chess. Two boards, units moving freely to the corresponding squares. Author: Ed Friedlander.
- Dutch Billiards Chess. Billiards chess with pocketed pieces returned to. Author: Ed Friedlander.
- Dutch Chess. Pawns start on the back ranks and move as queens. Author: Ed Friedlander.
- Dynamic Bastardo. Cut-throat four-player variant with free setup. Author: Ed Friedlander.
- Dynamo Chess. Units push and pull one another. Some bugs may remain in the program. Author: Ed Friedlander.
- Dynasty Chess. Capture both king and queen, whose moves vary. Author: Ed Friedlander.
- Earthquake Chess. Center of board runs down a fault. Author: Ed Friedlander.
- Easy Chess. Java applet the plays chess. Author: Ed Friedlander.
- Echexs. Hexagonal variant for three players. Author: Ed Friedlander. Inventor: Jean-Louis Cazaux.
- Echo Chess I. If possible, make a second move with a matching unit. Author: Ed Friedlander. Inventor: Ralph Betza.
- Echo Chess II. If possible, make a second move with a matching unit. Author: Ed Friedlander.
- Echos. Transform your non-attacked, non-royal units as you like. Author: Ed Friedlander. Inventor: Vladimir Pribylinec.
- Eclipse Chess. Units in the eclipse zone cannot move or give check. Author: Ed Friedlander. Inventor: João Pedro Neto.
- Ed's Chess Applet. Missing description Author: Ed Friedlander.
- Edgehog Chess. Queens may move only to or from edges of the board. Author: Ed Friedlander. Inventor: John Driver.
- Eight Kings Chess. Checkmate any one of them to win. Author: Ed Friedlander.
- Emperor Chess. The king may move to, and only to, any square under attack by. Author: Ed Friedlander.
- Emperor of China. A cross between Chess and Halma. Author: Ed Friedlander. Inventor: Vincent Everaert.
- En Passant Chess. All pieces can capture and be captured en passant. Author: Ed Friedlander.
- English Progressive Chess. Missing description Author: Ed Friedlander.
- Enjoyable Hour Chess. Three-Dimensional Chess. Author: Ed Friedlander.
- Enlarged and Improved Chess. Early large-board variant from Holland. Author: Ed Friedlander.
- Entourage Chess. Any piece (not pawn) adjacent to the king is also royal. Author: Ed Friedlander.
- Epiphany Chess. Three Kings. Author: Ed Friedlander.
- Episcopal Chess. Capture both opposing bishops to win. Author: Ed Friedlander. Inventor: Tony Paletta.
- Erosion Chess. Units erode after eight moves. Author: Ed Friedlander. Inventor: João Pedro Neto.
- Escalation Chess. Getting a unit captured lets you move twice on the next turn. Author: Ed Friedlander.
- Ethiopian Chess. African variant with distinct mobilization phase. Author: Ed Friedlander.
- Exchanger Chess. Knights can move to a square. Author: Ed Friedlander.
- Exotic Pieces. Menagerie of pieces, old and new. Have fun! Author: Ed Friedlander.
- Explosion Chess. Whatever units the mover attacks disappear; if the mover. Author: Ed Friedlander.
- Extended Queenside Castling. Orthochess, but Queenside castling is possible with a piece at d1 or b1, also called Madchess. Author: Ed Friedlander. Inventor: T. Varghese.
- Extinction Chess. Capture all of any kind of unit. Popular variant. Author: Ed Friedlander. Inventor: R. Wayne Schmittberger.
- Falcon Chess. Missing description Author: Ed Friedlander. Inventor: George William Duke.
- Farmer's Chess. Medieval four-sided variant; "Four Seasons Chess". Author: Ed Friedlander.
- Fast Lane Chess. Pawns may underpromote before they advance to the opposite rank. Author: Ed Friedlander.
- Feint Chess. Seven of each side's units can check but not capture. Author: Ed Friedlander.
- Feudal Chess. Four player game on 9x9. Author: Ed Friedlander.
- Fianchetto Chess. Bishops and Rooks exchange starting squares. Author: Ed Friedlander. Inventor: Jack Middleman.
- Fischer Random Chess. Random symmetric starting positions. Author: Ed Friedlander. Inventor: Robert J. Fischer.
- Fish Chess I. Pawns can move backwards. Author: Ed Friedlander.
- Fish Chess II. Pawns can move and capture backwards. Author: Ed Friedlander.
- Fishaway Chess. Giveaway lumberjack chess. Author: Ed Friedlander.
- Five Star Chess I. You can also win by getting five of your own units in a new row. Author: Ed Friedlander.
- Five Star Chess II. You can also completing a row of five units. Author: Ed Friedlander.
- Five Tigers Chess. Variant of Chinese Chess. Red can make two pawn moves per turn but. Author: Ed Friedlander.
- Five Up Chess. Three-Dimensional Chess. Author: Ed Friedlander. Inventor: Jim Aikin.
- Flip Chess. Missing description Author: Ed Friedlander. Inventor: John William Brown.
- Flip Shogi. Missing description Author: Ed Friedlander. Inventor: John William Brown.
- ForChess. Four player chess variant on 8 by 8 board. Author: Ed Friedlander. Inventor: Tom Rogers.
- Foreign Policy Chess. Peacekeepers are a third army. Author: Ed Friedlander. Inventor: Francois Tremblay.
- Fortresses. Odd shaped board. Author: Ed Friedlander.
- Four Player Chess. One of many possible setups. Capture an opponent's king and control the remaining units. Author: Ed Friedlander.
- Four Player Chess III. Another popular setup for four players. Author: Ed Friedlander.
- Four-Handed Chess -- Standard. Four handed chess on plus-shaped board. Author: Ed Friedlander.
- Frankfurt Chess. Capturer becomes a unit of the type captured. Author: Ed Friedlander.
- Freak Chess. Bishops on starting square, other pieces start on random squares and place your King on your first turn. Author: Ed Friedlander. Inventor: D. S. Ellis.
- Free Castling Chess. Game using old liberal Italian castling rules. Author: Ed Friedlander.
- Free Placement Chess. Choose your own starting position. Author: Ed Friedlander. Inventor: Roger Cooper.
- Free-For-All Chess. Move either side's units. Author: Ed Friedlander. Inventor: Jed Stone.
- French Revolution Chess. Short game with your pawns facing the enemy. Author: Ed Friedlander. Inventor: Hans L. Bodlaender.
- Fuller's Proposal. Bishops can also move and capture as knights. Author: Ed Friedlander. Inventor: F. G. Fuller.
- Fusion Chess A. Pieces merge and separate. Author: Ed Friedlander. Inventor: Fergus Duniho.
- Fusion Chess B. Pieces merge and separate. Author: Ed Friedlander. Inventor: Fergus Duniho.
- Galachess. Hexagonal variation from 1980. Author: Ed Friedlander. Inventor: Mathew B. Harrer.
- Gambler's Chess. Mover is determined randomly. Author: Ed Friedlander.
- German Rules c. 1420. Missing description Author: Ed Friedlander.
- Ghost Chess. The ghosts of captured units reappear. Author: Ed Friedlander. Inventor: T. R. Dawson.
- Glinski's Hexagonal Chess. The most popular hexagonal variant. Author: Ed Friedlander. Inventor: Wladyslaw Glinski.
- Glory Chess. A pawn on the seventh rank checks. Author: Ed Friedlander. Inventor: Tony Paletta.
- Grand Chess. Considered among the best of the large-board setups. Author: Ed Friedlander. Inventor: Christian Freeling.
- Grand Crossing Chess. Win by getting your king to the opposite side. Author: Ed Friedlander. Inventor: Henk Breugem.
- Grande Acedrex. Java applet that plays Grande Acedrex. Author: Ed Friedlander.
- Grasshopper Chess. Row of grasshoppers behind the pawns. Author: Ed Friedlander. Inventor: Joseph Boyer.
- Grasshopper Chess II. The queen becomes a grasshopper. Author: Ed Friedlander.
- Gravitational Chess. Major units fall back toward the friendly side. Author: Ed Friedlander.
- Gravity Chess. Moved unit attracts. Author: Ed Friedlander. Inventor: João Pedro Neto.
- Greater Chess. Large variant from the 1940's. Author: Ed Friedlander. Inventor: W. Day.
- Greek Progressive. Make at most one move more than your opponent in his last turn. Author: Ed Friedlander. Inventor: Kostas Prentos.
- Grid Chess. Always move to a different 4 by 4 square part of the board. Author: Ed Friedlander. Inventor: Walter Stead.
- Gridlock. Missing description Author: Ed Friedlander.
- Gryphon Chess. Units are promoted on each move. Author: Ed Friedlander. Inventor: Vernon Rylands Parton.
- Gryphon Chess II. Units are promoted on each move. Author: Ed Friedlander.
- Guard Chess. Guarded pieces cannot be captured. Author: Ed Friedlander.
- Haigh's Chess. Variant on a 8x12 board with doubled arrays. Author: Ed Friedlander. Inventor: H. Haigh.
- Half Chess. 4x8 board, plays well. Author: Ed Friedlander. Inventor: John Groeneman.
- Handicap Chess. As in golf, stronger units are given relative limits. Author: Ed Friedlander.
- Hardly Anywhere Chess. Pieces teleport anywhere without capturing, threatening, or escaping check. Author: Ed Friedlander. Inventor: Edward Jackman.
- Hawaiian Chess. Pacific Island variant. Author: Ed Friedlander.
- Hazlewood's Hexagonal Chess. Hexagonal Chess on a diamond-shaped board with many short-moving pieces. Author: Ed Friedlander. Inventor: Richard Hazlewood.
- Hecatomb Chess. One king and 31 queens on each side. Author: Ed Friedlander. Inventor: Kevin Maroney.
- Heraldic Chess I. Heraldic set plus sixteen cards per hand. Author: Ed Friedlander. Inventor: Modest Solans.
- Heraldic Chess II. Heraldic set plus ten cards per hand. Author: Ed Friedlander. Inventor: Modest Solans.
- Heraldic Chess III. Heraldic set plus six cards per hand. Author: Ed Friedlander. Inventor: Modest Solans.
- Heraldic Chess IV. Heraldic set plus two twelve-sided dice. Author: Ed Friedlander. Inventor: Modest Solans.
- Heraldic Extinction Chess. Win by capturing any piece plus its pawn. Author: Ed Friedlander.
- Hermit Chess. Play vs opponent making increasing numbers of random moves. Author: Ed Friedlander. Inventor: Karl Scherer.
- Hero Chess. The king's pawn is replaced by a unit which mimics the move of any friendly unit on the board. Author: Ed Friedlander. Inventor: Tomas Forsman.
- Hero Chess II. Missing description Author: Ed Friedlander.
- Hero Chess III. Also called Superhero Chess. Author: Ed Friedlander. Inventor: Tomas Forsman.
- Hexachess. Hexagonal Chess with lots of Pawns on a peanut-shaped board. Author: Ed Friedlander.
- HexChess. Hexagonal Chess where Bishops move 1 hex in any direction and Rooks may not move to adjacent cell. Author: Ed Friedlander. Inventor: Tony Paletta.
- Hexes Chess . Hexes Chess requires fewer chess pieces and a smaller board than conventional chess, but increases the mobility of each piece. Author: Ed Friedlander. Inventor: Mike Layfield.
- Hexes Chess. Hexes Chess requires fewer chess pieces and a smaller board than conventional chess, but increases the mobility of each piece. Author: Ed Friedlander. Inventor: Mike Layfield.
- Hexes Compressed Chess. Hexes Chess on a squared off, reduced size board. Author: Ed Friedlander. Inventor: Mike Layfield.
- Hidden Target Chess I. Know which enemy species to eliminate to win, but not which one of yours is vulnerable. Author: Ed Friedlander.
- Hidden Target Chess II. Don't know which enemy species to eliminate to win, but do know which one of yours is vulnerable. Author: Ed Friedlander.
- Hidden Target Chess III. Double Blind. Author: Ed Friedlander.
- Home Base Chess. Captured units return to original squares if unoccupied. Author: Ed Friedlander.
- Hoppel-Poppel Chess. Bshops capture as Knights and Knights as Bishops. Author: Ed Friedlander.
- Hostage Chess. Pieces taken are held hostage and can be exchanged against other pieces and then dropped. Author: Ed Friedlander. Inventor: John Leslie.
- Howell's Chess. The usual array and moves on a 10x10 board. Author: Ed Friedlander. Inventor: C. S. Howell.
- Hunter-Falcon Chess. Two new kinds of runner are added only during the course of the game. Author: Ed Friedlander.
- Hurricane Chess. Move as many of your units as you like, once each, each turn. Author: Ed Friedlander.
- Hyperspace Chess. Units travelling more than 1 square go through hyperspace. Author: Ed Friedlander. Inventor: João Pedro Neto.
- Ice Age Chess. Blocks of ice cover the board at intervals. Author: Ed Friedlander. Inventor: Köksal Karakus.
- Identific Chess. Place undifferentiated units, then choose who they are after they. Author: Ed Friedlander. Inventor: Vernon Rylands Parton.
- Idle King Chess. Kings do not appear on the board until the 13th turn, and can. Author: Ed Friedlander.
- Imitating Chess. Units move according to the FIDE move of the last enemy unit. Author: Ed Friedlander. Inventor: Sergey Sirotkin.
- Imitator Chess. A neutral piece must legally imitate your move. It may not capture. Author: Ed Friedlander.
- Immobilizer Chess. The immobilizer does not capture, but renders adjacent enemy. Author: Ed Friedlander. Inventor: George Dekle.
- Imperial Chess I. Four-player game on circular board, also called Chez. Author: Ed Friedlander. Inventor: Donald irvin Gebhart.
- Imperial Chess II. Standard array with extra Pawns on a round board. Author: Ed Friedlander. Inventor: Chris Fanning.
- Imperial Chess III. Four-player all-against-all game on a cross-shaped board. Author: Ed Friedlander. Inventor: Mike Calkoviks and Jeff Knight.
- Incognito Chess. In addition to the King, one Pawn is secretly royal. Author: Ed Friedlander. Inventor: Ralph Betza.
- Indian Chess. Some local variant rules from the colonial period. Author: Ed Friedlander.
- Indian/Turkish Grand Chess. An Indian/Turkish and very playable historic variant on a 10 by 10 board. Author: Ed Friedlander.
- Insane. Units mutate randomly. Author: Ed Friedlander. Inventor: Jari Huikari.
- Insane II. Units mutate randomly. This time, you know what the unit will become. Author: Ed Friedlander. Inventor: Jari Huikari.
- Interregnum Chess. No king or queen; win by promoting a pawn; captured units replaced. Author: Ed Friedlander.
- Intrigue. Capturing a particular pawn places the enemy king on the board. Author: Ed Friedlander. Inventor: Nigel Chapman.
- Iron Guard. Non-capturable guard replaces White queen. Author: Ed Friedlander.
- Iron Knight. Non-capturable knight. Author: Ed Friedlander. Inventor: Ralph Betza.
- Italian Miniature Chess. 5x5 game as played in Italy. Author: Ed Friedlander.
- Italian Miniature Losing Chess. 5x5 game as played in Italy. Author: Ed Friedlander.
- Italian Miniature Progressive Chess. 5x5 progressive game as played in Italy. Author: Ed Friedlander.
- Italian Progressive Chess. White moves once, black two times, white three times, etc. Check is only allowed at last move of series. Author: Ed Friedlander.
- Janus Chess. Large board variant. Author: Ed Friedlander. Inventor: Werner Schoendorf.
- Japanese Chess. Missing description Author: Ed Friedlander.
- Joari-Joara. West Indian variant in which you may capture a guarded piece if and only if the move gives discovered check. Author: Ed Friedlander.
- Joust. Two knights. Squares cannot be revisited. Author: Ed Friedlander.
- Joyful Chess. One special square enhances a piece's powers, the other diminishes them. Author: Ed Friedlander. Inventor: Karl Schulz.
- Juggernaut Chess. Unstoppable destructive unit moves at random. Author: Ed Friedlander. Inventor: Erik Wilson.
- Junta Chess. The king and his knights are the junta. Author: Ed Friedlander. Inventor: Tony Paletta.
- Kamikaze I. Capturing units are removed, except kings. Author: Ed Friedlander. Inventor: B. G. Laws.
- Kamikaze II. Capturing units are removed, kings may not capture. Author: Ed Friedlander. Inventor: B. G. Laws.
- Kamikaze III. If the lone queen checks, she wins. Author: Ed Friedlander.
- Kansas Progressive Chess. Missing description Author: Ed Friedlander.
- King and Pawns. White moves twice but has only king and pawns. Author: Ed Friedlander.
- King with a Shotgun Chess. Twice each game, the King can make a non-moving Rook capture. Author: Ed Friedlander. Inventor: Adam Norberg.
- King with a Shotgun Chess II. Twice each game, the King can make a non-moving Queen capture. By Ed Friedlander.
- King's Corner Chess. Random setup with kings in opposite corners. Author: Ed Friedlander.
- King's Fortress Chess. Random setup with king's in opposite corners and extra pawns. Author: Ed Friedlander.
- Kinglet. Win by taking all the pawns of the opponent. Author: Ed Friedlander. Inventor: Vernon Rylands Parton.
- Kingmaker Chess. The first pawn to reach the opposite rank promotes to the enemy king. Author: Ed Friedlander. Inventor: Tony Paletta.
- Knight Odds Chess. White starts without the queen's knight. Author: Ed Friedlander.
- Knight Relay Chess. Knights confer their movement ability on units they defend. Popular variant. Author: Ed Friedlander. Inventor: Mannis Charosh.
- Knight Supreme Chess. Rooks and Bishops are replaced by Knights in the opening array. Author: Ed Friedlander.
- KnightMate Chess. The knight, not the kings, is royal. Author: Ed Friedlander. Inventor: Bruce Zimov.
- Knightrider Bouncy Chess. Diagonal runners bounce off the walls; knights are knightriders. Author: Ed Friedlander. Inventor: Stuart Conquest.
- Knightrider Bouncy Chess II. Pieces bounce off of walls, Knightriders can't capture each other. Author: Ed Friedlander. Inventor: Stuart Conquest.
- Knights Chess. Rooks, Bishops, and Queens can also move as knights. Author: Ed Friedlander.
- Konigsritter. Four-player game on curiously-shaped board with one player having a different army than the others. Author: Ed Friedlander. Inventor: Albert Buttner.
- Korean Chess. The variant of chess played in Korea. Author: Ed Friedlander.
- Korkser Chess. Local rules in parts of Germany. Author: Ed Friedlander.
- Korkser Chess II. Same as Korkser Chess, but without initial double pawn moves. Author: Ed Friedlander.
- Kriegspiel. With help of a referee, two players move without knowing the moves of the opponent. Author: Ed Friedlander. Inventor: Henry Michael Temple.
- Lambeth Conference. Bishops bounce off the walls. Author: Ed Friedlander. Inventor: Adam Sobey.
- Las Vegas Fun Chess. Java applet for Vegas Fun Chess, a dice-based variant. Author: Ed Friedlander. Inventor: George Koltanowski.
- Last Rook Chess. King and last remaining rook are both royal. Author: Ed Friedlander. Inventor: Tony Paletta.
- Leandro's Chess. You can move any number of units one time each per turn, providing. Author: Ed Friedlander. Inventor: Tony Quintanilla.
- Legan's Chess. Normal set and board, different setup and pawn moves. Author: Ed Friedlander. Inventor: L. Legan.
- Leo Chess. The Queen is replaced by a Leo, which must leap over a screen to capture. Author: Ed Friedlander.
- Levantine Chess. One unit is immune to capture if it is not attacking. Author: Ed Friedlander.
- Lias's Proposal. Pawns may move, but not capture, one square sideways. Author: Ed Friedlander. Inventor: A. G. Lias.
- Lion Chess. Queen, rook and bishops are cannons that must leap in order to capture. Author: Ed Friedlander. Inventor: Joseph Boyer.
- Loonybird. Pieces on a seven by seven board move differently when they take. Author: Ed Friedlander. Inventor: Christian Freeling.
- Lord of the Rings Chess. Missing description Author: Ed Friedlander. Inventor: Robert Price.
- Los Alamos Chess. Used for the first computer chess program. Author: Ed Friedlander.
- Losing Chess. Captures are mandatory, object is to be unable to move. Author: Ed Friedlander.
- Losing Chess II. Captures are mandatory, stalemate draws. Author: Ed Friedlander.
- Losing Chess III. Captures are mandatory; checkmating or having bare. Author: Ed Friedlander.
- Losing Chess IV. Captures are mandatory, being checkmated or having bare. Author: Ed Friedlander.
- Losing Sphinx Chess. Losing chess in four dimensions. Author: Ed Friedlander. Inventor: Vernon Rylands Parton.
- Ludus Chessunculus. Game played on Hexagonal board with non-standard pieces. Author: Ed Friedlander. Inventor: John Cleaveland.
- Lumberjack. Pieces move according to their current column. Author: Ed Friedlander. Inventor: Bruce Zimov.
- Machine Gun Chess. Attacked units are removed. The object is to remove. Author: Ed Friedlander. Inventor: J. E. H. Creed.
- Mad Threeparty Chess. Chess for three. Each opponent has a king which you may check. Author: Ed Friedlander. Inventor: Vernon Rylands Parton.
- Madcap Chess. If a capture is available, the player must capture,. Author: Ed Friedlander. Inventor: Mannis Charosh.
- Madrasi Chess. Units of opposite color and identical kind which attack one another cannot move. Author: Ed Friedlander. Inventor: Abdul Karwatkar.
- Maelstrom Chess. All 64 squares are initially occupied. Author: Ed Friedlander. Inventor: Michael Asher.
- Mafeking Kriegspiel. Players choose their own setups, unknown to opponent, units adjacent by Knights (spies) are visable. Author: Ed Friedlander. Inventor: Hubert Philips.
- Mage Chess. Queen can swap with any friendly unit. Author: Ed Friedlander. Inventor: Oliver Xymoron.
- Mage Chess II. Queen can swap with any friendly or enemy unit. Author: Ed Friedlander. Inventor: Oliver Xymoron.
- Magic Carpet Chess. Each player has a magic carpet to move a non-King to any empty square on the board. Author: Ed Friedlander. Inventor: Denis van Straten and Karl Scherer.
- Magna Carta Chess. Black has the FIDE array, White has a Marshal and an Archbishop instead of a Queen and King. Author: Ed Friedlander. Inventor: Charles Gilman.
- Magnetic Chess. Moved unit attracts and repels. Author: Ed Friedlander. Inventor: João Pedro Neto.
- Maharaja and Sepoys I. Lone king, moving as queen+knight, versus an army. Author: Ed Friedlander.
- Maharaja and Sepoys II. Lone king, moving as queen+knight, versus an army. The maharaja. Author: Ed Friedlander.
- Manchurian Chess. Java applet for Yitong, a variant on Chinese Chess. Author: Ed Friedlander.
- March Hare Chess. Each side moves first a black unit, then a white unit. Author: Ed Friedlander.
- Martian Chess. Large variant from the book The Chessmen of Mars. Author: Ed Friedlander.
- Maya Chess. Indian variant in which a defended unit (not king or pawn) moves according to the defender(s). Author: Ed Friedlander.
- McCooey's Hexagonal Chess. Popular hexagonal variant. Author: Ed Friedlander. Inventor: Dave McCooey.
- Meares's Proposal. Bishops can also move and capture one square orthogonally. Author: Ed Friedlander. Inventor: J. W. Meares.
- Mecklenbeck Chess. Pawns promote on 6th rank. Author: Ed Friedlander. Inventor: Bernd Eickenscheidt.
- Mecklenbeck Chess. Missing description Author: Ed Friedlander.
- Medusa Chess. Non-capturing medusas petrify enemy units. Author: Ed Friedlander. Inventor: Vernon Rylands Parton.
- Medusa Chess II. Non-capturing medusas petrify enemy units. Author: Ed Friedlander. Inventor: Vernon Rylands Parton.
- Medusa Chess III. Medusas petrify enemy units they attack and capture as Queens. Author: Ed Friedlander. Inventor: Vernon Rylands Parton.
- Melee Chess. Large variant, win by entering enemy castle. Author: Ed Friedlander. Inventor: C. George Boeree.
- Memory CardChess for Four. Prior to each turn, turn over a card if it is available. If it is your unit, it is activated, otherwise, remember where it was. Author: Ed Friedlander.
- Memory CardChess for Three. Prior to each turn, turn over a card if it is available. If it is your unit, it is activated, otherwise, remember where is was. Author: Ed Friedlander.
- Memory CardChess for Two. Like regular CardChess, but cards are flipped face down when not moving. Author: Ed Friedlander.
- Mercenary Pawn Chess. Use either side's pawns to capture units. Author: Ed Friedlander. Inventor: Tony Paletta.
- Mesmer Chess. Missing description Author: Ed Friedlander. Inventor: Dan Troyka.
- Metamorphing Chess. Pieces upgrade when escaping, downgrade when capturing. Author: Ed Friedlander. Inventor: Fergus Duniho.
- Metamorpin'-Fusion A. Pieces are likely to proliferate. Author: Ed Friedlander. Inventor: Fergus Duniho.
- Metamorpin'-Fusion B. Pieces are likely to proliferate. Author: Ed Friedlander. Inventor: Fergus Duniho.
- Mexican Chess. Large variant from Mexico with 3,1 jumpers. Author: Ed Friedlander. Inventor: PrinceJoli Kansil.
- Mexican King Chess. Win the usual way or by making it safely to Mexico. Author: Ed Friedlander.
- Michell's Proposal. Pawns may underpromote on next-to-last rank. Author: Ed Friedlander. Inventor: R. P. Michell.
- Michelson's Chess. Each side moves first a red unit, then a white unit. Author: Ed Friedlander.
- Mideastern Chess. Actually a California variant resembling "Tamurlane" chess. Author: Ed Friedlander. Inventor: John Mantle Green.
- Mimotaur Chess. Mimotaurs move as queens, may only capture a unit. Author: Ed Friedlander. Inventor: Vernon Rylands Parton.
- Minefield Chess. Two of your squares have hidden mines that can destroy an enemy unit. Author: Ed Friedlander.
- Mini-Shogi. Missing description Author: Ed Friedlander.
- Miniature Chess. From an old Martin Gardner column in "Scientific American". Author: Ed Friedlander. Inventor: Martin Gardner.
- Ministers Chess. Two queens on each side on a 9x9 board, available commercially. Author: Ed Friedlander.
- Missile Chess. Each unit can rifle-capture once. Author: Ed Friedlander. Inventor: R. Wayne Schmittberger.
- Mock Chess. No royal piece, mandatory captures. Author: Ed Friedlander.
- Modern Chess. Latin American 9x9 version. Author: Ed Friedlander. Inventor: Gabriel Vicente Maura.
- Monarch Hexagonal Chess. Proprietary hexagonal variant. Author: Ed Friedlander. Inventor: Jean de Poel.
- Mongolian Chess. Shatar, the major form of chess played in Mongolia for centuries. Author: Ed Friedlander.
- Mongredian Chess. Both bishops on queenside, both knights on kingside. Author: Ed Friedlander.
- Monkey Do Chess. If possible, make a second move with any unit. By Ed Friedlander.
- Monochrome Chess. All units are of the same color. Win by accumulating captures. Author: Ed Friedlander. Inventor: Andrew Looney.
- Monster Chess. White's normal army faces Red's king and four pawns; Red moves twice per turn. Author: Ed Friedlander.
- Morley's Chess. Large board with the usual pieces. Author: Ed Friedlander.
- Moroccan Chess. If you have one or more captures, you must make a capture. Author: Ed Friedlander.
- Moscow King Chess. Board starts empty. Author: Ed Friedlander.
- Mountain King Chess. First king to reach the center square of an 11 x 11 board wins. Author: Ed Friedlander. Inventor: Emmor Ray Sperry.
- Mrs. Graycheck's Chess. Pawns promote only to a unit already captured. Author: Ed Friedlander.
- Ms. Alice Chess. Alice Chess played on one board. Author: Ed Friedlander. Inventor: Vernon Rylands Parton.
- Mutation Chess. Units other than kings transform into whatever they capture. Queens do not move to give check. Author: Ed Friedlander. Inventor: John E. Bosley.
- Mysore Chess. Large variant by an 18th century Indian king. Author: Ed Friedlander.
- Narrowness Chess. Many pawns. Author: Ed Friedlander. Inventor: Sergey Sirotkin.
- Nearly Anywhere Chess. Pieces teleport anywhere without capturing or checking. Author: Ed Friedlander. Inventor: Edward Jackman.
- Nemesis Chess. Missing description Author: Ed Friedlander. Inventor: Philip M. Cohen.
- NeoChess. For four players on an 8x10 board. Author: Ed Friedlander. Inventor: J. L. Naylor.
- NeoSchaak. Load your own units, onto the first two ranks, as you like during the game. Author: Ed Friedlander.
- Neutral King Chess. Missing description Author: Ed Friedlander. Inventor: Vernon Rylands Parton.
- New York Twins Chess I. Large board with two kings. Checkmate either one. Author: Ed Friedlander.
- New York Twins Chess II. Large board with two kings. Capture one, then checkmate the other. Author: Ed Friedlander.
- Nine Riders Chess. Each piece is a rider. Author: Ed Friedlander. Inventor: Philip M. Cohen.
- Ninny Chess. Classic board game. Author: Ed Friedlander.
- No Entry Chess. Bar the opponent's access to one square after each of your moves. Author: Ed Friedlander. Inventor: David B. Pritchard.
- Non-Prise Chess. Only kings and pawns can capture queens, rooks, bishops, or knights. Author: Ed Friedlander. Inventor: Bruce Zimov.
- Non-Random CardChess for Four. Cardchess with predetermined locations for card pieces. Author: Ed Friedlander.
- Non-Random CardChess for Teams. Cardchess with predetermined locations for card pieces. Author: Ed Friedlander.