Other Variants

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• Pocket knight. Each player has a knight that he can drop during the game. (Recognized!) Author: Hans L. Bodlaender.

A - B - C - D - E - F - G - H - I - J - K - L - M - N - O - P - Q - R - S - T - U - V - W - X - Y - Z

0-9

• 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.
• 21st Century Chess. (10x8, Cells: 64) Author: Nicholas Jay Wolff. Inventor: Karl Munzlinger.

A

• Absolute checkless chess. No piece may cross a square where it gives check. Author: Hans L. Bodlaender.
• Accessory Chess. A drop variant with one or two external pieces per player (many to choose from). Zillions (zrf) program available. (8x8, Cells: 64) By M Winther.
• Adjutant Chess. Introducing the Adjutant that can slide like a queen, but on the same square colour only (with zrf). (8x8, Cells: 64) By M Winther.
• Ajax Random Chess. Pseudo-Fischer Random Chess with Ajax-Chessmen, and droping Ajax-Ministers. (8x8, Cells: 64) By Jose Carrillo.
• Alternative Chess. A drop variant with one single external piece per player (many to choose from). Zillions (zrf) program available. (8x8, Cells: 64) By M Winther.
• Anti-Gravity Chess. A newly-moved unit repels the nearest unit along each. (8x8, Cells: 64) Author: Ed Friedlander. Inventor: Joćo Pedro Neto.
• Anti-Magnetic Chess. Like colors attract, opposites repel, along orthogonal lines. (8x8, Cells: 64) Author: Ed Friedlander. Inventor: Joćo Pedro Neto.
• Arena Chess. 32-turn variant in which pieces must initially move into a special area, and then always make capturing moves. By Jeff Kiska.
• Arena Chess. Entry in the 32-move-maximum contest. Author: Ed Friedlander. Inventor: Jeff Kiska.
• Arktur Chess. Random first ranks, two kings. (8x8, Cells: 64) Author: Ed Friedlander. Inventor: Peter Riessen.
• Armageddon Chess. (8x8, Cells: 64) By Simon E Jepps.
• Aviation Chess. Knight pawns move and capture as bishops and can leap any number of units. (8x8, Cells: 64) Author: Ed Friedlander. Inventor: L. Legan.

B

• Bachelor Chess. All pieces promote. Win in the usual way or by joining king and queen. (8x8, Cells: 64) Author: Ed Friedlander. Inventor: Doug Chatham.
• Backwards Stalemate Chess. (8x8, Cells: 64) By John Kipling Lewis.
• Balanced Game, The. A game that requires a calm equilibrium. (8x8, Cells: 64) By Simon E Jepps.
• Bankhouse Chess. Author: Ed Friedlander.
• 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. (8x8, Cells: 64) By Fergus Duniho.
• Beirut Chess. One unit is secretly carrying a bomb. (8x8, Cells: 64) Author: Ed Friedlander. Inventor: Jim Winslow.
• Bicapture Chess. You may capture, and be checked by, your own units. (8x8, Cells: 64) Author: Ed Friedlander.
• BlindChess. A blindfold program (optional board), good for training (DOS freeware). (8x8, Cells: 64) By M Winther.
• Blindfold Chess. One of the oldest chess variants, where one of the players is blindfolded (zrf available). (8x8, Cells: 64) By M Winther.
• Boardroom Chess. A wide and varied board provides for a deep and lengthy game. (16x10, Cells: 160) By Simon E Jepps.
• Bombalot. Bombs can wipe out most pieces on the board. Author: Hans L. Bodlaender. Inventor: Bruce Harper.
• Bosma chess. King that is attacked three or more times is not considered to be in check. Fairy chess problem theme. Author: Hans L. Bodlaender. Inventor: R. Bosma.

C

• Calorie Chess. Pieces have a limited amount of calories to move with, and have resorted to cannibalism! (8x8, Cells: 64) By John Smith.
• Capapranka Chess. A cap renders a square and any occupant non-functional. (8x8, Cells: 64) Author: Ed Friedlander.
• Carnivore Chess. Each turn, also move an uncapturable predator. Author: Ed Friedlander.
• Cerimon Chess. Recover pieces by checking with a like piece. (8x8, Cells: 64) By Paul DeWitte.
• 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. On each turn the rank of the moved piece changes. By Sergey Sirotkin.
• Chameleon Chess. Begin with 16 pawns which evolve. Author: Ed Friedlander. Inventor: Sergey Sirotkin.
• Chaos. A strange Chess variant designed to baffle onlookers. (8x8, Cells: 64) Inventor: Ron Kensek.
• Chatty Chess. Four-handed game using normal board and pieces. (8x8, Cells: 64) Author: Ed Friedlander. Inventor: Ian Richardson.
• Checkless Chess. You may not check unless it is mate. Author: Ed Friedlander.
• Checkless Chess. Giving check without mate is not allowed. Author: Hans L. Bodlaender.
• Chess And Physics. Several chess variants based on physics. Author: Joćo Pedro Neto. Inventor: Joćo Pedro Neto and Claude Chaunier.
• Chess and Xiangqi Variants. Variants from the Shakki-77 group. Author: Jouni Tolonen.
• Chess with Different Periods. (6x6, Cells: 36) By Yu Ren Dong.
• Chess with Different Periods . A Turn-related variant of Los Alamos Chess. Players may play with many modest variants. (6x6, Cells: 36) By Yu Ren Dong.
• Chess with Reserves. Load your units during the game. (8x8, Cells: 64) Author: Ed Friedlander. Inventor: E. Slater.
• Chess960.com. Talk about Chess960 with other members. (8x8, Cells: 64) By Calvin Jack Pomerantz.
• Chessers. Pieces may ride pawns to the end ranks. Author: Ed Friedlander. Inventor: Frank Maus.
• ChessVariants.zrf. 17 variants in 1 file. (8x8, Cells: 64) By (zzo38) A. Black.
• Choice chess. Propose five moves and your opponent selects one for you. (8x8, Cells: 64) Author: Hans L. Bodlaender. Inventor: Fred Galvin.
• Clairvoyant Chess. Players predict what opponent will do to gain advantages. By Jim Aikin.
• Clockwork Orange Chess. Condition your opponent's pieces to be non-violent. (8x8, Cells: 64) By Fergus Duniho.
• Clockwork Orange Chess. Captured pieces are replaced with non-capturing counterparts. (8x8, Cells: 64) By Fergus Duniho.
• Coin. Author: Ed Friedlander.
• Combat Chess II. A wargame-like chess variant. (8x8, Cells: 64) By John Garwood.
• Compromise Chess. Propose two moves and your opponent selects one for you. (8x8, Cells: 64) Author: Hans L. Bodlaender. Inventor: Fred Galvin.
• Confederation Chess. Two pieces can fuse into a stronger unit, and can dissociate. Author: Ed Friedlander. Inventor: Frank Maus.
• Construction. Chess pieces are modelled after construction vehicles. (8x8, Cells: 64) Author: Karl Kristianson.
• Conversion Chess. I chose this one to represent the entire family of co-chess. Author: Ed Friedlander. Inventor: Ralph Betza.
• Conversion Chess. A co-chess variant. (8x8, Cells: 64) Author: Alessandro Castelli. Inventor: Ralph Betza.
• 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.
• Coronation Chess. Bishop and rook can fuse to replace the queen. Author: Ed Friedlander.
• Crazy Lightning Chess. Speed chess combined with an umpire calling out random rule changes. Author: Hans L. Bodlaender.
• Crazyhouse Chess. One-board Bughouse. (8x8, Cells: 64) Author: Ed Friedlander.
• Creation Chess. Pieces on the far rank may give birth to hybrids. Author: Ed Friedlander. Inventor: Bruce Trove.
• csipgs Chess. Design and buy new chess pieces during play. (8x8, Cells: 64) By Ralph Betza.
• Czech Chess. Drop pawns by checking the King. (8x8, Cells: 64) By Adrian Alvarez de la Campa.

D

• Diagonal Chess . Board turned 45 degrees. (8x8, Cells: 64) Author: Marek14 . Inventor: David Howe.
• Diagonal Chess. Board turned 45 degrees. (8x8, Cells: 64) By David Howe.
• Diplomacy chess. Simultaneously selected moves are only carried out when they do not conflict. By Joćo Pedro Neto.
• Discochess. Distributed Chess. (8x8, Cells: 64) By Marc A. Donis.
• Drawless Chess . Simple rules are added to make draws impossible. (8x8, Cells: 64) Author: Marek14 . Inventor: Michael D. Ward.
• Drawless Chess. Simple rules are added to make draws impossible. (8x8, Cells: 64) By Michael D. Ward.
• DUAL RING Tournament Format. Tournament format for handling uneven number of players. (8x8, Cells: 64) By Rich Hutnik.
• Dynamic Chess . Pieces move like closest piece left on the same rank. Author: Marek14 .
• Dynamic Chess. Pieces move like closest piece left on the same rank. Author: Edward Jackman.

E

• Economy in Chess Variants. Several chess variants based on economic principles. By Joćo Pedro Neto.
• EurasiaChess: Photos of Chessmen Shogi Pieces adaptation. http://www.eurasia-chess.com. (9x9, Cells: 81) By Emmanuel Baud.
• Eurasian Pawn piece. A hybrid European and Asian Pawn. By Rich Hutnik.

F

• The Fair First Move Rule in Chess. Every turn you flip a coin to see who goes first. By Ralph Betza.
• FIDE Chess with black/white impartiality rule. FIDE Chess which eliminates the advantage given to the White player. (8x8, Cells: 64) By David Cannon.
• Fool's Chess. One pawn is replaced by a Fool. (8x8, Cells: 64) By Danny Van den Berghe.
• FTM Chess: Follow the Mover. After a normal move, you may move a piece to the vacated square. (8x8, Cells: 64) Author: Alessandro Castelli. Inventor: Gianluca Vecchi.
• Fusion Chess. Variant in which pieces may merge together or split apart. (8x8, Cells: 64) By Fergus Duniho.
• Fusion Chess. Play this variant in which pieces combine and split apart. (8x8, Cells: 64) By Fergus Duniho.

G

• Gambler's Chess. A scheme for adding betting to any Chess variant. By Tomas Forsman.
• The Game of Nemoroth. For the sake of your sanity, do not read this variant! (8x8, Cells: 64) By Ralph Betza.
• Ganeshan Chess. Introducing a new Elephant piece known as (the) Ganapati. (10x10, Cells: 100) By Simon E Jepps.
• Ghost Chess. The ghosts of captured units reappear. (8x8, Cells: 64) Author: Ed Friedlander. Inventor: T. R. Dawson.

H

• Haunted Chess. (8x8, Cells: 64) By Stephane Burkhart.
• Hero's Chess. A chess with very different pieces. (8x8, Cells: 64) By (zzo38) A. Black.
• Hierarchical Chess. Article from Variant Chess, August 2004. (8x8, Cells: 64) Author: John Beasley.
• Hindustani Chess. 19th century Indian game. (8x8, Cells: 64) Author: John Ayer. Inventor: _unknown.
• Hobgoblin Chess. Inchworm crowd-forming magnetic mutating lunar-hallway exploding-Pawn Chess; an extreme game. (8x8, Cells: 64) Author: Jack Masters. Inventor: Simon Vertigo.
• Hybrids. Standard pieces combine and split. (8x8, Cells: 64) By Artem Shvorin.
• Hyperchess . At the beginning of the game, you specify pieces that disappear from the board and reappear at a later turn. Author: Hans L. Bodlaender.

I

• IAGO Chess System. http://abstractgamers.org/wiki/iago-chess. (8x8, Cells: 64) By Rich Hutnik.
• Imitating Chess. Units move according to the FIDE move of the last enemy unit. Author: Ed Friedlander. Inventor: Sergey Sirotkin.
• Imitating Chess. Pieces move as the last moved piece. By Sergey Sirotkin.
• Imposter Chess. Play this game! Exchange captured pieces in order to move Kings in different ways. (8x8, Cells: 64) Author: Tony Quintanilla and Laila W. Stefan. Inventor: Laila W. Stefan.
• Imposter Chess . Exchange captured pieces in order to move Kings in different ways. (8x8, Cells: 64) Author: Laila W. Stefan and Andrew Newman. Inventor: Laila W. Stefan.
• Inertia Chess. Pieces continue to move in the same direction. Author: Joćo Pedro Neto. Inventor: Claude Chaunier.
• Insane . Pieces change to random type when they move. Author: Marek14 . Inventor: Jari Huikari.
• 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.
• Interweave. Game with elements of Checkers and Ultima where all pieces are colorbound and only capture pieces on the other color. (8x8, Cells: 64) By Peter Aronson.
• Interweave . Game with elements of Checkers and Ultima where all pieces are colorbound and only capture pieces on the other color. (8x8, Cells: 64) By Peter Aronson.
• Invisible King Chess. Opponent can't see where you moved your king to. (8x8, Cells: 64) By (zzo38) A. Black.
• Iron Guard. Non-capturable guard replaces White queen. (8x8, Cells: 64) Author: Ed Friedlander.
• Iron Guard Chess. Instead of a queen, white has an Iron Guard who can move only to adjacent diagonal squares and cannot be captured. (8x8, Cells: 64) Author: Douglas Silfen.

K

• Kibitzing Vox Populi Chess variant. Rules for turning kibitzing into a game unto itself. By Rich Hutnik.
• King of the Ladder Tournament Rules. Ideas for rules to mix variants together in one game. (8x8, Cells: 64) By Rich Hutnik.
• Kingmaker Chess. The first pawn to reach the opposite rank promotes to the enemy king. (8x8, Cells: 64) Author: Ed Friedlander. Inventor: Tony Paletta.
• Kings. Kings on the Game Courier. (8x8, Cells: 64) By Abdul-Rahman Sibahi.
• Kings. A modest variant with more than one king. (8x8, Cells: 64) By Abdul-Rahman Sibahi.
• Kings or Lemmings?. Normal chess except that a player can produce clones of his king. (8x8, Cells: 64) By Ingo Althofer.
• Knight-Riding Chess. (8x8, Cells: 64) By John Smith.
• Knights of the Round Table. (8x8, Cells: 64) By Adam Goss.
• Korkser Chess. Local rules in parts of Germany. (8x8, Cells: 64) Author: Ed Friedlander.
• Korkser Chess II. Same as Korkser Chess, but without initial double pawn moves. (8x8, Cells: 64) Author: Ed Friedlander.

L

• Lùotuoqí (Camel Chess). Fun contest: Help us create a new chess variant by committee. (8x8, Cells: 64) Author: Glenn Overby II.
• Lag Chess. The last move made by your opponent is not known to you. (8x8, Cells: 64) By Ralph Betza.
• Lancelot. (8x8, Cells: 64) By Stan Druben.
• Lao Tzu Chess. www.schemingmind.com. (8x8, Cells: 64) By John Kipling Lewis.
• Liars Chess. You may lie about the move you have made. Author: Fabio Forzoni. Inventor: Alessandro Castelli.
• LiQi. Very Strong Chess. (8x8, Cells: 64) By Larry L. Smith.
• LiQi . Very Strong Chss. (8x8, Cells: 64) By Larry L. Smith.
• Lłotuoqķ (Camel Chess) . Chess variant designed by committee. (8x8, Cells: 64) Author: Larry L. Smith. Inventor: Various.

M

• Machine Gun Chess. Attacked units are removed. The object is to remove. (8x8, Cells: 64) Author: Ed Friedlander. Inventor: J. E. H. Creed.
• Mad Queen Shogi. Play this new Chess/Shogi hybrid on Game Courier. (8x8, Cells: 64) Author: Fergus Duniho. Inventor: Larry L. Smith.
• Mage. Rooks cannot be captured or capture, and the Queen is replaced by a Mage. (8x8, Cells: 64) Author: Peter Aronson. Inventor: Oliver Xymoron.
• Mage Chess. Queen can swap with any friendly unit. (8x8, Cells: 64) Author: Ed Friedlander. Inventor: Oliver Xymoron.
• Mage Chess II. Queen can swap with any friendly or enemy unit. (8x8, Cells: 64) Author: Ed Friedlander. Inventor: Oliver Xymoron.
• Many Rules in One Game. List chess and variants. By Ralph Betza.
• Mecklenbeck Chess. Pawns promote on 6th rank. Author: Ed Friedlander. Inventor: Bernd Eickenscheidt.
• Mecklenberg . Pawns can promote on the sixth row. Author: Marek14 . Inventor: Bernd Eickenscheidt.
• Mecklenberg chess. Pawns can promote on the sixth row. Author: Hans L. Bodlaender. Inventor: Bernd Eickenscheidt.
• Metamorph Chess. Play this variant in which pieces frequently promote or demote. (8x8, Cells: 64) By Fergus Duniho.
• Metamorph Chess. Variant in which pieces transform by fixed rules into other pieces. (8x8, Cells: 64) By Fergus Duniho.
• Mike's Camel Chess . Lłotuoqķ (Camel Chess) variant with more balanced pieces. (8x8, Cells: 64) By Michael Nelson.
• Mockery Chess. (8x8, Cells: 64) By Stephane Burkhart.
• Monochrome Chess . All pieces are the same color. Players move pieces on their side of the board. (8x8, Cells: 64) Author: David Howe. Inventor: Andrew Looney.
• Monochrome Chess. All units are of the same color. Win by accumulating captures. (8x8, Cells: 64) Author: Ed Friedlander. Inventor: Andrew Looney.
• Multi-King Chess. (8x8, Cells: 64) By Roberto Lavieri.
• Multiple of 10 Checkmate. Variant where you can only checkmate or be checkmated on move 10, 20, 30, ect.. (8x8, Cells: 64) By Calvin Jack Pomerantz.
• Multiple of 10 Checkmate. (8x8, Cells: 64) By Calvin Jack Pomerantz.

N

• Nemoroth, The Game of. For the sake of your sanity, do not read this variant! (8x8, Cells: 64) By Ralph Betza.
• Neutral Subject Chess. Most pieces start neutral, and players compete to recruit them. (8x8, Cells: 64) By Charles Gilman.
• new age chess. a game played with the same board and set but with different rules. (8x8, Cells: 64) By Andy Maxson.
• Nietzsche Chess. That which does not capture a piece, makes it stronger. (8x8, Cells: 64) By Charles Gilman.
• No Chess . Forbid one move to your opponent each turn. Author: Robert Price. Inventor: Zoltan Blazsik.
• No Limit Bet Chess. A gambling multi-move chess variant played with dice that allows players to place bets on each move. (8x8, Cells: 64) By Charles Daniel.
• No-Chess. Forbid one move to your opponent each turn. (8x8, Cells: 64) Author: Zoltan Blazsik and Hans L. Bodlaender. Inventor: Zoltan Blazsik.
• Norwegian Chess. Q/N and B/R transform after each move. (8x8, Cells: 64) Author: Ed Friedlander.
• Nuisance Chess. Co-chess variants in which empty cosquares are occupied by nuisances which may be captured by either side. Author: Ed Friedlander.

O

• O/R Chess - Overloader/Restorer chess. A cochess variant. Author: Alessandro Castelli.
• Option-Suicide Chess. You can optionally destroy your own pieces. (8x8, Cells: 64) By (zzo38) A. Black.

P

• Pacifist Chess. By Larry L. Smith.
• Particle Collision Chess. Taken pieces leave energy on the board that can be transformed into `mass': pieces. Author: Joćo Pedro Neto. Inventor: Joćo Pedro Neto and Claude Chaunier.
• Pawn Shooter Chess. Defeat your opponent by shooting pawns at them! (8x8, Cells: 64) By (zzo38) A. Black.
• Pocket knight. Each player has a knight that he can drop during the game. (Recognized!) Author: Hans L. Bodlaender.
• Pole Chess. (8x8, Cells: 64) Author: Mark Thompson. Inventor: Piers Anthony.
• Prime.Ministers Contemporary Random Chess. (8x8, Cells: 64) By Jose Carrillo.
• Progressive Writing Chess. You have to write more and more each turn. (8x8, Cells: 64) By (zzo38) A. Black.

Q

• Queen of the Night Chess. An over powered game on the Standard Board. (8x8, Cells: 64) By Abdul-Rahman Sibahi.

R

• Random Transposal Chess. Use dice to swap pieces. () By John Smith.
• Reformed Chess. Pawn can swap with an enemy piece located on the last rank, except king. Thusly, many more won endgames (zrf available). (8x8, Cells: 64) By M Winther.
• Refusal Chess. You may refuse one enemy move per turn. Author: Ed Friedlander. Inventor: Fred Galvin.
• Refusal chess. A problem. Author: Hans L. Bodlaender. Inventor: C. H. O'D. Alexander.
• Refusal Chess. Refuse your opponent to make certain moves. (8x8, Cells: 64) Author: Hans L. Bodlaender. Inventor: Fred Galvin.
• Rolling Kings. Play Rolling Kings online with Game Courier. (8x8, Cells: 64) Author: Antoine Fourričre. Inventor: Peter Aronson.
• Romanchenko's Chess. FIDE Chess trainer Romanchenko shifted the FIDE board in the middle to help his students think for themselves. (8x8, Cells: 64) Author: Jeremy Gabriel Good. Inventor: V. Romanchenko.

S

• Schachdame. Variant between Checkers and Chess. (8x8, Cells: 64) Author: Hans L. Bodlaender. Inventor: Heinrich Richter.
• Schachdame . Variant between Checkers and Chess. Author: Uwe Wiedemann. Inventor: Heinrich Richter.
• Schachdame Chess. Pawns, a bishop, and a royal queen. Author: Ed Friedlander. Inventor: Heinrich Richter.
• Shamanic Chess . Pieces may be transformed into 'Shamans'. (8x8, Cells: 64) By M Winther.
• Shamanic Chess. Pieces may be transformed into 'Shamans'. (8x8, Cells: 64) By M Winther.
• Shatranj Extended Tournament Scoring (S.E.T.S) Rules. An attempt at an improved scoring system for chess tournaments. (8x8, Cells: 64) By Rich Hutnik.
• A Simple Proposal. Variant where promotion may occur on the 7th or 8th rank, and may be delayed, but only to captured pieces. (8x8, Cells: 64) Author: Peter Aronson. Inventor: Ted Clancy.
• Simultaneous Chess. A variant of chess where players select moves at same time. (8x8, Cells: 64) By Rich Hutnik.
• Solitary Patience Chess. Variant Chess Magazine vol 7, issue 56. (8x8, Cells: 64) By Stephane Burkhart.
• Stevenson's Four-Player Chess. A game for two 2-player teams on a regular Chess board with the object of capturing all opposing pieces. By Jake Stevenson.
• Sudden Death Chess. A piece must be sacrificed after each non-capturing move. (8x8, Cells: 64) By Doug Chatham.
• Sudden Death Chess. If you do not capture, you must remove one of your own units. (8x8, Cells: 64) Author: Ed Friedlander. Inventor: Doug Chatham.
• Sudden Death Chess . A piece must be sacrificed after each non-capturing move. (8x8, Cells: 64) By Doug Chatham.
• Surprise Chess. Speed chess combined with an umpire calling out random rule changes. Author: Hans L. Bodlaender.
• Swedish Chess. Drop chess with regular pieces. Pieces dropped can relocate friendly pawns. (8x8, Cells: 64) By M Winther.
• Synchronous Chess. The two sides truly move simultaneously. (8x8, Cells: 64) Author: Ed Friedlander. Inventor: Vitaly Korolev.

T

• Taxi Chess. Pay for moves: long moves are expensive. By Ralph Betza.
• Taxi Chess . Pay for moves: long moves are expensive. Author: Robert Price. Inventor: Ralph Betza.
• The Travelers . (9x9, Cells: 81) Author: Roberto Lavieri and Larry L. Smith. Inventor: Roberto Lavieri.
• Thunder Chess. A hybrid of Metamorph Chess, Fusion Chess, and Assimilation Chess. (8x8x64) By Fergus Duniho.
• Thunder Chess Preset for Game Courier. Play this hybrid of Fusion, Assimilation, and Metamorph Chess. (8x8, Cells: 64) By Fergus Duniho.
• Tilting the Balance. Players can set off an atomic bomb. By Ralph Betza.
• Time Traveler's Chess. Chess pieces may travel backwards in time. (8x8, Cells: 64) By Danny Purvis.
• The Travelers. (9x9, Cells: 81) By Roberto Lavieri.
• Troja. Commercially sold game where pieces can be stacked. (8x8, Cells: 64) Author: Onno Garms.
• Turnstyle. Four player chess variant using a normal chess set. By Ethan Hunt.
• Twelve Mutation Chess. Variant that uses 12 mutators that may be activated or deactivated during the game. By David Howe.

U

• U-Chess. Moves are legal if they can be written with three symbols in descriptive notation. (8x8, Cells: 64) Author: Hans L. Bodlaender.
• U-Chess. Play Unambiguous Three-Symbol Chess online. (8x8, Cells: 64) Author: Fergus Duniho.
• Ultima with Alternate Graphics . Game where each type of piece has a different capturing ability. Author: David Howe. Inventor: Robert Abbott.
• Undecided Chess . Pieces begin in an undecided state until they move. (8x8, Cells: 64) By Adrian Alvarez de la Campa.
• Unreliable Delivery Chess. Pieces may get delayed before they arrive at their destinations. Author: David Howe. Inventor: Ralph Betza.
• Using chess sets to play mini-sukoku (6x6). (8x8, Cells: 64) By Karen Robinson.

V

• Variant Chess, August 2004. Article on Hierarchical Chess. (8x8, Cells: 64) Author: John Beasley.
• Verve. A real-time, hidden information, chess variant for playing online! (8x8, Cells: 64) By David Potter.
• veSQuj - Chess with 21st century armies . A highly tactical variant with a 21st-century-war theme. (6x6, Cells: 36) By Glenn Overby II.
• veSQuj - Chess with 21st century armies. A highly tactical variant with a 21st-century-war theme. (6x6, Cells: 36) By Glenn Overby II.
• Vox Populi Chess variant. A crowd plays itself at a game with only one winner. By Rich Hutnik.

W

• Wild Kingdom Chess. (8x11, Cells: 88) By Nicholas Jay Wolff.
• Wild Kingdom Chess. (8x11, Cells: 88) By Nicholas Jay Wolff.

X

• XYMYX. Players make their moves at the same time. (8x8, Cells: 64) Author: Fernando Moscoso. Inventor: Javier Ignacio Lizarzaburu.
• XYMYX. Link to site where you can play this game! (8x8, Cells: 64) Author: Fernando Moscoso. Inventor: Javier Ignacio Lizarzaburu.

Z

• Zeitgeist. . Variant with simultaneous movement. Author: David Howe. Inventor: John Cooper.

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