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SELECT * FROM `Item` LEFT JOIN `IndexEntry` USING (ItemID) WHERE FIND_IN_SET(:'Diff-Other',`Categories`) AND `IsHidden` = 0 AND `Item`.`IsDeleted` = 0 AND `Language` = 'English' ORDER BY `LinkText`, `Item`.`Summary` ASC LIMIT 500 OFFSET 0
- 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.
- Absolute checkless chess. No piece may cross a square where it gives check. (8x8, Cells: 64) 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. By M Winther.
- Adjutant Chess. Introducing the Adjutant that can slide like a queen, but on the same square colour only (with zrf). By M Winther.
- Ajax Orthodox Chess. Orthodox Chess with Ajax-Chessmen, and droping Ajax-Ministers. (8x8, Cells: 64) By Jose Carrillo.
- Ajax Orthodox Chess. Orthodox Chess with Ajax-Chessmen, and droping Ajax-Ministers. By Jose Carrillo.
- Ajax Random Chess. Pseudo-Fischer Random Chess with Ajax-Chessmen, and droping Ajax-Ministers. (8x8, Cells: 64) By Jose Carrillo.
- Alpaca Chess. An Alpaca, worth two pawns, is added to the standard piece context (with zrf). By M Winther.
- Alternative Chess. A drop variant with one single external piece per player (many to choose from). Zillions (zrf) program available. By M Winther.
- Anti-Gravity Chess. A newly-moved unit repels the nearest unit along each. Author: Ed Friedlander. Inventor: João Pedro Neto.
- Anti-Magnetic Chess. Like colors attract, opposites repel, along orthogonal lines. Author: Ed Friedlander. Inventor: João 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. Author: Ed Friedlander. Inventor: Peter Riessen.
- Armamentist Race Chess. Missing description (10x12, Cells: 116) By Claudio Martins Jaguaribe.
- Assault&Siege. Missing description (8x8, Cells: 64) By Ismael Santos.
- 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.
- Backwards Stalemate Chess. Missing description (8x8, Cells: 64) By John Kipling Lewis.
- Bankhouse Chess. Missing description 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.
- 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 (8x8, Cells: 64) By Stephane Burkhart.
- Beginners Chess. Missing description 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.
- Bicapture Chess. You may capture, and be checked by, your own units. Author: Ed Friedlander.
- 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.
- Blue Queen on 64 and 80. Blue Queen belongs to both sides. By George William Duke.
- 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.
- Builder chess. Introducing the Builder. (8x8, Cells: 64) By Hafsteinn Kjartansson.
- 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. Author: Ed Friedlander.
- Carnivore Chess. Each turn, also move an uncapturable predator. Author: Ed Friedlander.
- Castle Chess. As Fide-chess, but with extended castle: the king may jump three squares (with zrf). By M Winther.
- Cerimon Chess. Recover pieces by checking with a like piece. (8x8, Cells: 64)
- 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. Begin with 16 pawns which evolve. Author: Ed Friedlander. Inventor: Sergey Sirotkin.
- Chameleon Chess. On each turn the rank of the moved piece changes. By Sergey Sirotkin.
- Chaos. A strange Chess variant designed to baffle onlookers. Inventor: Ron Kensek.
- Chaotic Chess. Missing description (8x8, Cells: 64) By Patrik Hedman.
- Chatty Chess. Four-handed game using normal board and pieces. Author: Ed Friedlander. Inventor: Ian Richardson.
- CHECK 11. 11 different original factions, chosen secretly, each with extra powers when few pieces remain. By Paul Thierry TESSA.
- Checkless Chess. You may not check unless it is mate. Author: Ed Friedlander.
- Checkless Chess. Giving check without mate is not allowed. (8x8, Cells: 64) Author: Hans L. Bodlaender.
- Chess And Physics. Several chess variants based on physics. Author: João Pedro Neto. Inventor: João Pedro Neto and Claude Chaunier.
- Chess and Xiangqi Variants. Variants from the Shakki-77 group. Author: Jouni Tolonen.
- Chess New. Missing description (10x10, Cells: 64) By Hector Quintana.
- Chess Variant Score Notation Book. Chess score notation book for 100 square chess variants. By Simon Edward Jepps.
- Chess with Different Periods . A Turn-related variant of Los Alamos Chess. Players may play with many modest variants. By Yu Ren Dong.
- Chess with Different Periods. Missing description (6x6, Cells: 36) By Yu Ren Dong.
- 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.
- Chess960.com. Talk about Chess960 with other members. 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. 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. Captured pieces are replaced with non-capturing counterparts. (8x8, Cells: 64) By Fergus Duniho.
- Clockwork Orange Chess. Condition your opponent's pieces to be non-violent. By Fergus Duniho.
- Coin. Missing description Author: Ed Friedlander.
- Combat Chess II. A wargame-like chess variant. (8x8, Cells: 64) By John Garwood.
- Companion chess. The Queen may have a companion. (8x8, Cells: 64) By Piotr Smagacz.
- 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.
- 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.
- 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.
- d4 d6 chess. Dice determine the number of steps you can move with your piece. (8x8, Cells: 64) By Maurice Dekker.
- Diagonal Chess . Board turned 45 degrees. Author: Marek14 . Inventor: David Howe.
- Diagonal Chess. Board turned 45 degrees. (8x8, Cells: 64) By David Howe.
- Dice-Money Chess. Earn money if you do what is written on the dice. (8x8, Cells: 64) By (zzo38) A. Black.
- Diplomacy chess. Simultaneously selected moves are only carried out when they do not conflict. By João Pedro Neto.
- Discochess. Distributed Chess. By Marc A. Donis.
- Drawless Chess . Simple rules are added to make draws impossible. 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. By Rich Hutnik.
- Duck Chess. A Duck that must be moved by both players can block your moves. (8x8, Cells: 64) Author: H. G. Muller. Inventor: Tim Paulden.
- 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.
- Economy in Chess Variants. Several chess variants based on economic principles. By João Pedro Neto.
- EurasiaChess: Photos of Chessmen Shogi Pieces adaptation. http://www.eurasia-chess.com. By Emmanuel Baud.
- Eurasian Pawn piece. A hybrid European and Asian Pawn. By Rich Hutnik.
- The Fair First Move Rule in Chess. Every turn you flip a coin to see who goes first. By Ralph Betza.
- Fairy Pieces Part 2 Volume 1. Showcasing 158 Fairy Pieces. (8x8, Cells: 64) By Christine Bagley-Jones.
- Fool's Chess. One pawn is replaced by a Fool. 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.
- Full Cavalry. Rooks are replaced by Lancers and castling is still legal. By JT K.
- Fusion Chess. Play this variant in which pieces combine and split apart. By Fergus Duniho.
- Fusion Chess. Variant in which pieces may merge together or split apart. (8x8, Cells: 64) By Fergus Duniho.
- 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 Edward Jepps.
- Ghost Chess. The ghosts of captured units reappear. Author: Ed Friedlander. Inventor: T. R. Dawson.
- Haunted Chess. Missing description (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. 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)
- 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.
- 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. Author: Tony Quintanilla and Laila W. Stefan. Inventor: Laila W. Stefan.
- Imposter Chess . Exchange captured pieces in order to move Kings in different ways. Author: Laila W. Stefan and Andrew Newman. Inventor: Laila W. Stefan.
- Inertia Chess. Pieces continue to move in the same direction. Author: João 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. 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. 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. Author: Douglas Silfen.
- Jester Chess. The Jester is an 'anon' piece but similar to the 'Fool' - beautiful commercial wooden sets - a must have! Author: Simon Edward Jepps.
- Journalist's Chess. Journalist is movable to any position but no capture. (8x8, Cells: 64) By (zzo38) A. Black.
- Kibitzing Vox Populi Chess variant. Rules for turning kibitzing into a game unto itself. By Rich Hutnik.
- King Friday XIII Chess. Flexible castling, promotion to opponent's pieces, etc. (8x8, Cells: 64) By (zzo38) A. Black.
- King of the Ladder Tournament Rules. Ideas for rules to mix variants together in one game. (8x8, Cells: 64) By Rich Hutnik.
- Kings. Kings on the Game Courier. 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.
- Kira Chess/Kira Shogi. "Kira" and "L" pieces which is not known by your opponent. (8x8, Cells: 64) By (zzo38) A. Black.
- Knight-Riding Chess. Missing description (8x8, Cells: 64) By John Smith.
- Knights of the Round Table. Missing description (8x8, Cells: 64) By Adam Goss.
- 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.
- Lag Chess. The last move made by your opponent is not known to you. (8x8, Cells: 64) By Ralph Betza.
- Lancelot. Missing description (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 Chss. By Larry L. Smith.
- LiQi. Very Strong Chess. (8x8, Cells: 64) By Larry L. Smith.
- Locusts. Simple chess variant with only two set of pieces on each army. (12x12, Cells: 144) By Yu Ren Dong.
- Locusts . Simple chess variant with only two set of pieces on each army. By Yu Ren Dong.
- Luotuoqi (Camel Chess) . Chess variant designed by committee. Author: Larry L. Smith. Inventor: Various.
- Luotuoqi (Camel Chess). Fun contest: Help us create a new chess variant by committee. Author: Glenn Overby II.
- Machine Gun Chess. Attacked units are removed. The object is to remove. Author: Ed Friedlander. Inventor: J. E. H. Creed.
- Mad Queen Shogi. Play this new Chess/Shogi hybrid on Game Courier. Author: Fergus Duniho. Inventor: Larry L. Smith.
- Mage. Rooks cannot be captured or capture, and the Queen is replaced by a Mage. Author: Peter Aronson. Inventor: Oliver Xymoron.
- 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.
- Many Rules in One Game. List chess and variants. By Ralph Betza.
- The Marvellous Megafauna. A diverse Chess with Different Armies faction with riders and leapers. (8x8, Cells: 64) By Andrew L Smith.
- Maxim chess. Variant, invented by my little brother. (8x8, Cells: 64) By Daniil Frolov.
- Mecklenbeck . Pawns can promote on the sixth row. Author: Marek14 . Inventor: Bernd Eickenscheidt.
- Mecklenbeck Chess. Pawns promote on 6th rank. Author: Ed Friedlander. Inventor: Bernd Eickenscheidt.
- Mecklenbeck Chess. Pawns can promote on the sixth row. Author: Hans L. Bodlaender and Greg Strong. Inventor: Bernd Eickenscheidt.
- Metamorph Chess. Variant in which pieces transform by fixed rules into other pieces. (8x8, Cells: 64) By Fergus Duniho.
- Metamorph Chess. Play this variant in which pieces frequently promote or demote. By Fergus Duniho.
- Mike's Camel Chess . Lùotuoqí (Camel Chess) variant with more balanced pieces. By Michael Nelson.
- Minesweeper chess. Missing description (8x8, Cells: 64) By Daniil Frolov.
- Mockery Chess. Missing description (8x8, Cells: 64) By Stephane Burkhart.
- Monochrome Chess . All pieces are the same color. Players move pieces on their side of the board. Author: David Howe. Inventor: Andrew Looney.
- Monochrome Chess. All units are of the same color. Win by accumulating captures. Author: Ed Friedlander. Inventor: Andrew Looney.
- Multi-King Chess. Missing description (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.. By Calvin Jack Pomerantz.
- Multiple of 10 Checkmate. Missing description (8x8, Cells: 64) By Calvin Jack Pomerantz.
- Musketeer Chess. Adding 2 newly designed extra pieces. (8x8, Cells: 64) By Zied Haddad.
- 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.
- Noli Me Tangere Chess. Missing description (10x10, Cells: 100) By Patrik Hedman.
- Norwegian Chess. Q/N and B/R transform after each move. 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/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.
- Pacifist Chess. Missing description By Larry L. Smith.
- Particle Collision Chess. Taken pieces leave energy on the board that can be transformed into `mass': pieces. Author: João Pedro Neto. Inventor: João Pedro Neto and Claude Chaunier.
- Pawn Chess. Pawns promote to first piece captured by opponent. (8x8, Cells: 64) Author: (zzo38) A. Black.
- Pawn Shooter Chess. Defeat your opponent by shooting pawns at them! (8x8, Cells: 64) By (zzo38) A. Black.
- Pawns-to-Kings Chess. Missing description (8x8, Cells: 64) By Patrik Hedman.
- Phantom. Classical Chess featuring an invisible Phantom piece. By Simon Edward Jepps.
- Pocket knight. Each player has a knight that he can drop during the game. (Recognized!) Author: Hans L. Bodlaender.
- Pole Chess . F.I.D.E. chess with Pole piece added: from the SF/fantasy novel "Robot Adept". Author: Malcolm Webb. Inventor: Piers Anthony and Malcolm Webb.
- Pole Chess. Missing description (8x8, Cells: 64) Author: Mark Thompson. Inventor: Piers Anthony.
- Prime.Ministers Contemporary Random Chess. Missing description (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.
- Promote King Chess. King can promote into Cthulhu, and white pawns can promote into black pawns. (8x8, Cells: 64) By (zzo38) A. Black.
- Pyrrhus Chess. The Pyrrhus moves like a king but paralyzes enemy pieces at queen's distance (with zrf). By M Winther.
- Quadaptation. Use commanders to recruit better pieces. Capture your opponents commander and they lose. By realityreaper989.
- Quark Chess. Missing description By tilera Ley.
- Quarter Chess. Missing description (8x8, Cells: 64) By Patrik Hedman.
- Queen of the Night Chess. An over powered game on the Standard Board. By Abdul-Rahman Sibahi.
- Random Transposal Chess. Use dice to swap pieces. (8x8, Cells: 64) 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). By M Winther.
- Refusal Chess. You may refuse one enemy move per turn. Author: Ed Friedlander. Inventor: Fred Galvin.
- Refusal Chess. Refuse your opponent to make certain moves. (8x8, Cells: 64) Author: Hans L. Bodlaender. Inventor: Fred Galvin.
- Refusal chess. A problem. Author: Hans L. Bodlaender. Inventor: C. H. O'D. Alexander.
- Refuse Once Chess. You may refuse one enemy move per game. By Ed Friedlander.
- Reproduction chess. The Queen is pregnant. (8x8, Cells: 64) By Piotr Smagacz.
- Rolling Kings. Play Rolling Kings online with Game Courier. Author: Antoine Fourrière. Inventor: Peter Aronson.
- Romanchenko's Chess. FIDE Chess trainer Romanchenko shifted the FIDE board in the middle to help his students think for themselves. Author: Jeremy Gabriel Good and Fergus Duniho. Inventor: V. Romanchenko.
- Schachdame . Variant between Checkers and Chess. Author: Uwe Wiedemann. Inventor: Heinrich Richter.
- Schachdame. Variant between Checkers and Chess. (8x8, Cells: 64) Author: Hans L. Bodlaender. Inventor: Heinrich Richter.
- Schachdame Chess. Pawns, a bishop, and a royal ferz. Author: Ed Friedlander. Inventor: Heinrich Richter.
- Seventeen Pawns. You can replace opponent's queen by nine pawns. (8x8, Cells: 64) By (zzo38) A. Black.
- Shahrady. Chess with "passes". (8x8, Cells: 64) Author: Вадря Покштя. Inventor: Victor Anatolyevich Kupchenko.
- Shamanic Chess . Pieces may be transformed into 'Shamans'. By M Winther.
- Shamanic Chess. Pieces may be transformed into 'Shamans'. 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.
- Shatranj N W. catsmas. By Mark Simpson.
- Shogun Chess. Pieces promote and can be dropped, similar to Shogi. By Daniel Lee.
- A Simple Proposal. Variant where promotion may occur on the 7th or 8th rank, and may be delayed, but only to captured pieces. 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.
- Sirlin's Chess. Alternative presentation of "Chess 2 - The Sequel". (8x8, Cells: 64) Author: (zzo38) A. Black. Inventor: David Sirlin.
- SliderChess. Variant of Capablanca Chess with two extra Bishops per side replacing the Archbishop and Chancellor. By James Zuercher.
- 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.
- StrataChess v1.0. separate Strategic and Tactical gameplay. 2-6 players. Element of Chance. Terrain. Build your own armies. By Prussia General.
- Sudden Death Chess. A piece must be sacrificed after each non-capturing move. (8x8, Cells: 64) By Doug Chatham.
- Sudden Death Chess . A piece must be sacrificed after each non-capturing move. By Doug Chatham.
- Sudden Death Chess. If you do not capture, you must remove one of your own units. Author: Ed Friedlander. Inventor: 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. By M Winther.
- Switch-Side Chain-Chess. Optionally swap sides with your opponent upon completing a "chain". (8x8, Cells: 64) By Azlan Iqbal.
- Synchronous Chess. The two sides truly move simultaneously. Author: Ed Friedlander.
- Taxi Chess . Pay for moves: long moves are expensive. Author: Robert Price. Inventor: Ralph Betza.
- Taxi Chess. Pay for moves: long moves are expensive. By Ralph Betza.
- The Travelers . Missing description Author: Roberto Lavieri and Larry L. Smith. Inventor: Roberto Lavieri.
- Three drops chess. During the game, you can perform three piece drops. (8x8, Cells: 64) By Piotr Smagacz.
- Thunder Chess. Play this hybrid of Fusion, Assimilation, and Metamorph Chess. By Fergus Duniho.
- Thunder Chess. A hybrid of Metamorph Chess, Fusion Chess, and Assimilation Chess. (64x(8x8)) 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. By Danny Purvis.
- Trade Chess. Captured pieces can be dropped, with restrictions. (8x8, Cells: 64) By Brady .
- The Travelers. Missing description (9x9, Cells: 81) By Roberto Lavieri.
- Troja. Commercially sold game where pieces can be stacked. (8x8, Cells: 64) Author: Onno Garms.
- Trojan chess. the rules for the knight piece have been changed. (8x8, Cells: 64) By Piotr Smagacz.
- 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-Chess. Play Unambiguous Three-Symbol Chess online. Author: Fergus Duniho.
- U-Chess. Moves are legal if they can be written with three symbols in descriptive notation. (8x8, Cells: 64) Author: Hans L. Bodlaender.
- 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. 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.
- Upgrade chess. Upgrade initially weak pieces by capturing. (8x8, Cells: 64) By Daniil Frolov.
- Using chess sets to play mini-sukoku (6x6). Missing description (8x8, Cells: 64) By Karen Robinson.
- Variant Chess, August 2004. Article on Hierarchical Chess. Author: John Beasley.
- Vavulin Creative Chess. Before the start of the game, every player, creates up with one rule for both players, which operates the whole game. By Dmitrii Vavulin.
- Verve. A real-time, hidden information, chess variant for playing online! By David Potter.
- veSQuj - Chess with 21st century armies . A highly tactical variant with a 21st-century-war theme. 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.
- Veteran Chess. Most pieces can or must irreversibly promote when they capture. By H. G. Muller.
- Vivarta Chess. he rules are simple. Each piece automatically transforms into a different piece every time it moves. Pawns transform into Knig. By Вадря Покштя.
- Vox Populi Chess variant. A crowd plays itself at a game with only one winner. By Rich Hutnik.
- XYMYX. Link to site where you can play this game! Inventor: Javier Ignacio Lizarzaburu.
- XYMYX. Players make their moves at the same time. (8x8, Cells: 64) Inventor: Javier Ignacio Lizarzaburu.
- Zeitgeist. . Variant with simultaneous movement. Author: David Howe. Inventor: John Cooper.