Items Authored by Peter Aronson
Contest
- 42-Square Design Contest Results. The results of the contest to design a Chess Variant on 42 squares are now official. Author: Peter Aronson.
Game
- Allthought Chess. Variant of Thinktank Chess with Berolina Pawns. (8x8, Cells: 64) Author: Peter Aronson. Inventor: Frank Maus.
- Amphora. Chess variant inspired by game of Stone Warriors on wine bottle shaped board with 40 squares. (Cells: 40) By Peter Aronson.
- Anti-King Chess. Each player has both a King and an Anti-King to protect; Anti-Kings are in check when not attacked. (8x8, Cells: 64) (Recognized!) By Peter Aronson.
- Cavalry Chess. A once popular variant from the 1920's where every piece has additional jumping moves. (8x8, Cells: 64) Author: Peter Aronson. Inventor: Frank Maus.
- Chaturanga 4-84. An Updating of Chaturanga for Four Players with modern pieces and an 84-square board. (10x10, Cells: 84) By Peter Aronson.
- Checker-Pawn Chess. Pawns are replaced by Anglo-American Checkers pieces. (8x8, Cells: 64) Author: Richard D.B.M. and Peter Aronson. Inventor: Richard D.B.M..
- Chesica. Game from the 19th Century combining elements of Checkers and Chess. (8x8, Cells: 64) Author: Peter Aronson. Inventor: Frederick S. Copley.
- Chesquerque. Variant played on a quadruple Alquerque board. (9x9, Cells: 81) Author: Peter Aronson. Inventor: George Dekle.
- Chess with Cyclical Armies. Whenever a piece moves, it changes to another type of piece of vaguely similar value. By Peter Aronson.
- Chess with Ultima, Rococo and Supremo Pieces. A series of variants with the Orthochess array transplanted to a 10x10 board and various exotic pieces added. (10x10, Cells: 100) Author: Peter Aronson and Ben Good. Inventor: Peter Aronson and George Dekle.
- Chessence. Variant on a 9 x 6 board with 8 missing squares, immobile Kings, and 9 pieces whose movement depends on their spatial relation. (6x9, Cells: 46) Author: Peter Aronson. Inventor: Jim Winslow.
- Chessling. Variant where the board starts empty and each player can move or drop a piece, and the goal is capture of all opposing pieces. Author: Peter Aronson. Inventor: How-Hie Ling.
- Combining Knightmare Chess. When a single piece other than a Pawn or a King captures, it combines with that piece into a Knightmare either side may move. (8x8, Cells: 64) By Peter Aronson.
- Complete Permutation Chess. Game with all possible combinations of Falcon, Rook, Bishop and Knight on the back row. (16x8, Cells: 128) By Peter Aronson and George William Duke.
- Courier 'de la Dama'. Courier Chess with a Modern Queen and other changes for more dynamic play. (12x8, Cells: 96) Author: Peter Aronson. Inventor: Nuno Cruz.
- Cows and Butterflies. A simple Chess-like game of exchanges and promotions. Author: Peter Aronson. Inventor: Jennifer Aronson.
- Cross Chess. Game played on a cross-shaped board. (Cells: 64) Author: Peter Aronson. Inventor: Leigh Miller and N. Maddox.
- Dabbabante Chess. Played on a 10x10 board with Super Dabbabah pieces. (10x10, Cells: 100) Author: Peter Aronson. Inventor: Vernon Rylands Parton.
- Desertion Chess. When you move next to opposing pieces, they desert to your side; win by converting or capturing all opposing pieces. (8x8, Cells: 64) Author: Peter Aronson. Inventor: Uwe Wiedemann.
- Double-Ended Chess. Captures are by withdrawal and approach. (8x8, Cells: 64) By Peter Aronson.
- Edgehog Chess. Three Chess variants featuring John Driver's edge-loving piece the Edgehog. (8x8, Cells: 64) Author: Peter Aronson. Inventor: John Driver.
- Emperor Chess. Large chess variant with a Commander (Queen + Knight), two Queens, and two Emperors (Bishop + Lame Dabbabah-rider) per side. (12x12, Cells: 144) Author: John Ayer and Peter Aronson. Inventor: H. R. Lambert.
- Every Man a Pawn. Each piece has the powers of a Pawn (except promotion) in addition to its normal powers. (8x8, Cells: 64) By Peter Aronson.
- Fanorona Chess. Variant played on a Fanorona board with capture by approach and by withdrawal. (5x9, Cells: 45) By Peter Aronson.
- The Fighting Fizzies. An Experimental Army for Chess with Different Armies. By Peter Aronson.
- Furious Courier. Courier Chess with a Modern Queen and Crooked Bishops. (12x8, Cells: 96) Author: Peter Aronson. Inventor: Nuno Cruz.
- Golem Chess. Variant where the Queen is replaced by the Golem, a piece that must be captured twice to remove it from play. (8x8, Cells: 64) Author: Peter Aronson. Inventor: Peter Aronson and Ben Good.
- Gothic Isles Chess. Fictional historic variant, with Dragons, Wizards and Champions. (8x8, Cells: 64) By Peter Aronson.
- Hopgi. Small-board variant of Chessgi with an L-shaped board, linked pairs of Kings, where all pieces can move like a Mao-hoppers. (7x7, Cells: 43) By Peter Aronson.
- Horus. Game with Royal Falcons where all pieces start off board and most captures return pieces to owner's hand. (7x7, Cells: 44) By Peter Aronson.
- Illusionary Piece Chess. A piece and a Pawn on each side are more powerful, but can not offer check or prevent bare King. (8x8, Cells: 64) By Peter Aronson.
- Imperial Dragon Chess. A variant of Xiangqi designed to appeal to western players. (9x10, Cells: 90) Author: Peter Aronson. Inventor: Paul Fredrix.
- 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.
- Jumping Chess. Pieces capture by jumping. Board has extra edge squares making it 10x10. (10x10, Cells: 100) By Peter Aronson.
- Kristensen's Game. A conscious attempt to restructure Chess from 1948. (9x9, Cells: 81) Author: Peter Aronson. Inventor: Ejnar Kristensen.
- Lilliputian Monochromatic Alice Chess. All pieces are colorbound, and switch boards rather than switching color. (2x(6x7), Cells: 84) By Peter Aronson.
- Little Dragon Chess. Modern small variant of Xiangqi on board of 41 squares. (5x7, Cells: 41) By Peter Aronson.
- Mad Elephant Chess. Pawns can be turned into Elephants; Elephants can promote to Mad Elephants, and Mad Elephants can trample lines of pieces. By Peter Aronson.
- Mad Scientist Chess. Fetch me the Pawn, Igor! (8x8, Cells: 64) By Peter Aronson.
- Mulligan Stew Chess. 42-Square Swapping-Mage Teleporting-Assassin Dual-Color-Bound-King Limited-Double-Move Leaping-Pawn Chess. (6x7, Cells: 42) By Peter Aronson.
- Narrow Chess. Variant on 2 by 20 board. (2x20, Cells: 40) By Peter Aronson.
- Neutral King Chess. V.R. Parton's game where two armies share a King both must try to mate. (8x8, Cells: 64) Author: Peter Aronson. Inventor: Vernon Rylands Parton.
- Not-Particularly-New Chess. A fairly restrainted variant on a 9x8 board, with Cardinals, Unicorns and Jesters. (9x8, Cells: 72) By Peter Aronson.
- Pachessi. Race and chess game on board formed by removing 3 by 3 square from center of 7 by 7 square. (7x7, Cells: 40) By Peter Aronson.
- PieceEater Chess. Yet another game with an indestructible randomly-wandering neutral piece. (8x8, Cells: 64) By Peter Aronson.
- Potential/Demotion Chess. Pieces may move like lower-ranked piece, but when doing so, become that lower ranked piece. (8x8, Cells: 64) By Peter Aronson.
- Prisoner's Escape. Free your Prisoner by getting it to an unattacked square -- a small board version of Anticheckmate Chess. (7x8, Cells: 44) By Peter Aronson.
- Rococo. A clear, aggressive Ultima variant on a 10x10 ring board. (10x10, Cells: 100) (Recognized!) Author: Peter Aronson. Inventor: Peter Aronson and David Howe.
- Rolling Kings. Kings must move along a predetermined path. (8x8, Cells: 64) By Peter Aronson.
- Royal Amazon Chess. Queens are replaced by Royal Amazons. (8x8, Cells: 64) By Peter Aronson.
- Ruddigore Chess. Chessgi variant where you can capture your own pieces, and every other turn you must capture or sacrifice a piece. (8x8, Cells: 64) By Peter Aronson.
- Samarcanda. Variant of Mideast Chess with Crooked Bishops. (10x10, Cells: 100) Author: Nuno Cruz and Peter Aronson. Inventor: Nuno Cruz.
- Separate Realms Chess. Pieces capture like normal FIDE pieces, but have limited moves that only take them to part of the board when not capturing. (8x8, Cells: 64) By Peter Aronson and Michael Nelson.
- Snark Hunt. Variant with unequal armies on board with 41 squares, inspired by a poem of Lewis Carroll's. (6x8, Cells: 41) By Peter Aronson.
- Thinktank Chess. Frank Maus' game where most pieces move differently when capturing from how they move without capturing. Author: Sergey Sirotkin and Peter Aronson. Inventor: Frank Maus.
- Toe-to-Toe Chess. A variant of Sittuyin (Burmese Chess) with alternating setup, and powerful, short-range pieces. (8x8, Cells: 64) By Peter Aronson.
- Toto40. Staircase board with fighting line in the middle, inspired by Totolospi game of Hopi Indians. (Cells: 40) By Peter Aronson.
- Train Wreck Chess. Move your piece, then one of your opponent's, but only forward. (8x8, Cells: 64) By Peter Aronson.
- Transactional Chess. Moves are grouped into transactions, which are not visible to your opponent
until committed. (8x8, Cells: 64) By Peter Aronson.
- Viking Chess. Armies start side-by-side on a 12 x 7 board. (12x7, Cells: 84) Author: Tomas Forsman and Peter Aronson. Inventor: Tomas Forsman.
- White Elephant Chess. Four variants pitting the white Elephant army against black with the normal FIDE array. (8x8, Cells: 64) By Peter Aronson.
Interview
- Aronson, Peter. Interview with the winner of the 44 squares contest. Author: Peter Aronson and Hans L. Bodlaender.
PBM
- Hole Chess. Variant on a board of 44 squares with two holes that pieces can be dragged into. Author: Peter Aronson. Inventor: Gary K. Gifford.
- Jumping Chess. Pieces capture by jumping. Board has extra edge squares making it 10x10. By Peter Aronson.
- Monkey King Chess. Monkey King fights Goblin King on 44 squares board in game with oriental influences. Author: Peter Aronson. Inventor: Peter Gelman.
- PiRaTeKnIcS. Play this 44-squares chess variant in which pirates on ships fight each other on Game Courier. Author: Peter Aronson. Inventor: David Jagger.
- Rococo. A clear, aggressive Ultima variant on a 10x10 ring board (includes mirror array and Push-Pullyu variants). Author: Peter Aronson and Antoine Fourrière. Inventor: Peter Aronson and David Howe.
- Ruddigore Chess. Play this Chessgi variant where you can capture your own pieces, and every other turn you must capture or sacrifice a piece! Author: Tony Quintanilla and Peter Aronson. Inventor: Peter Aronson.
- Star Pool Chess. Large variant of Makruk, with a center non-square that acts as a bridge. By Tony Quintanilla and Peter Aronson.
- Takeover Chess Play-By-Mail game. Examine this game played in the Invent and Play contest! Drawn. Author: Peter Aronson and Tony Quintanilla. Inventor: Tony Quintanilla.
Piece
- Rococo. Animated piece movement diagrams. By Peter Aronson and David Howe.
Piececlopedia
- Bishop, Reflecting. Moves as a Bishop, but can also reflect off of multiple sides of the board. Author: Peter Aronson.
- Edgehog. Moves as a Queen, but only to or from an edge. Author: Peter Aronson. Inventor: John Driver.
- Kangaroo. Moves on Queen lines to first square after second jumped over piece. Author: Peter Aronson. Inventor: J. de A. Almay.
- Locust. Jumps over opposing pieces on Queen lines to capture. Author: Peter Aronson.
- Reflecting Bishop. Moves as a Bishop, but can also reflect off of multiple sides of the board. Author: Peter Aronson.
- Rhino. A set of pieces which combine the movements of the Mao with that of the Wazir. By Peter Aronson.
Website
- Peg Leg's Gifts and Crafts . Business that sells wooden games including Byzantine Chess. Author: Peter Aronson.
Zillions
- 21st Century chess . A Zillions file to play an updating of Chess for the video game generation, on a 10x8 board with Barons and Jesters. Author: Peter Aronson.
- Abstract Chess . Pieces are really by stacks of stones of different heights, with their move depending on the number of stones. Author: Peter Aronson. Inventor: João Pedro Neto.
- Amphibian Chess . Pieces capture by leaping when there's a square past the target, or by replacement when the target is on the edge. Author: Peter Aronson. Inventor: Tony Paletta.
- Anti-King Chess . Each player has both a King and an Anti-King to protect; Anti-Kings are in check when not attacked. By Peter Aronson.
- Arabian Nights Chess . Large modern variant of historic Shatranj, with more pieces and flying carpets. Author: Peter Aronson. Inventor: Paul E. Newton and Timothy R. Newton.
- Augmented Chess . Players give standard chess pieces small additional movement possibilities from predescribed set. Author: Peter Aronson. Inventor: Ralph Betza.
- AvantGarde Chess . A font-named variant that adds a Centaur and a Man to the standard setup. By Peter Aronson.
- Avian Airforce . Experimental Rider/Leaper Army for Chess with Different Armies vs the Usual Four and Other Armies. Author: Peter Aronson. Inventor: Ralph Betza.
- Aviary . New pieces with shogi elements and a bird theme. Author: Peter Aronson. Inventor: Daniel Hollombe.
- Back-to-Back Chess . Both sides start "Back-to-Back", seperated by an uncrossable line on a specially-shaped 100 square board. Author: Peter Aronson. Inventor: Paul Kreutzer.
- Bastille Chess . Win by clearing your opponent's fortress. Author: Peter Aronson.
- Battle Chieftain Chess . Warriors and a king fight on a board with walls and holes. Author: Peter Aronson. Inventor: Craig Daniel.
- Big Chess . Chess variant on a 14 by 8 square board with extra Pawns, Knights and Bishops. Author: Peter Aronson. Inventor: Sergey Sirotkin.
- Black Holes . On 5 by 8 board with holes as pieces which also can be used for transport. Author: Peter Aronson. Inventor: Juraj Lörinc.
- BomberChess . A pawn may be exploded, removing pieces on all 8 adjacent squares. Author: Peter Aronson. Inventor: Adam Norberg.
- Border Wars . Game played on the 42 edges of a grid, with elements of Shogi and XiangQi. Author: Peter Aronson. Inventor: Jared B. McComb.
- Border Wars II . Game played on line edges with Shogi-like aspects. Author: Peter Aronson. Inventor: Jared B. McComb.
- The Bridge41 . 41 square board with bridge in the middle. Author: Peter Aronson. Inventor: Hubert Lamontagne.
- By Rook Or By Crook . Chess in the round on a hexagonal board with 42 trapezoidal squares. Author: Peter Aronson. Inventor: Jeff Rients.
- Cannons and Crabs . A variant on a 7x6 board with Crabs (improved Pawns), and Cannons (leapers). Author: Peter Aronson. Inventor: David Short.
- Captain Spalding Chess . Find an Elephant in your Pajamas. Author: Peter Aronson. Inventor: Ralph Betza.
- Capture-the-flag Chess . A translation of the classic children's game to a 42-square board. Author: Peter Aronson. Inventor: Thomas Cameron.
- Cavalry Chess . A once popular variant from the 1920's where every piece has additional jumping moves. Author: Peter Aronson. Inventor: Frank Maus.
- Chameleon Chess . Each player has a King and 11 Chameleons whose moves are determined by the type of square they are on. Author: Peter Aronson. Inventor: P. D. Magnus.
- Chaturanga 4-84 . An Updating of Chaturanga for Four Players with modern pieces on an 84-square board. By Peter Aronson.
- Chesica . Game from the 19th Century combining elements of Checkers and Chess. Author: Peter Aronson. Inventor: Frederick S. Copley.
- Cheskers and Grand Cheskers . Cross-variant between chess and checkers, with variants on larger boards. Author: Peter Aronson. Inventor: Solomon W. Golomb.
- Chesquerque . Variant played on a quadruple Alquerque board. Author: Peter Aronson. Inventor: George Dekle.
- Chess in the Fast Lane . The 64-squares of a regular Chess board are grouped into 41 "regions" producing a small board that looks full size. Author: Peter Aronson. Inventor: Francois Tremblay.
- Chess Olympic . Kings, Queens and Pawns have additional moves, and victory is by capture instead of checkmate. Author: Peter Aronson. Inventor: Redzo Kolakovic.
- Chess on a 12 by 12 Board . Orthodox chess but with additional squares around the setup. Author: Peter Aronson. Inventor: Doug Vogel.
- Chess with Cyclical Armies . Whenever a piece moves, it changes to another type of piece of vaguely similar value. By Peter Aronson.
- Chess with Different Armies . Play chess but with different types of armies. Author: Peter Aronson. Inventor: Ralph Betza.
- Chess with Different Armies . Play chess but with different types of armies. Author: Peter Aronson. Inventor: Ralph Betza.
- Chess with Ultima, Rococo and Supremo Pieces . A series of variants with the Orthochess array transplanted to a 10x10 board and various exotic pieces added. By Peter Aronson.
- Chigorin Chess. White has knights instead of bishops and a chancellor for his queen; black has bishops instead of knights. Author: Peter Aronson. Inventor: Ralph Betza.
- Chosen Chess. Move a piece you chose last turn, then choose a piece to move next turn. Author: Peter Aronson. Inventor: Gianni Cottogni.
- Combining Knightmare Chess . When a single piece other than a Pawn or a King captures, it combines with that piece into a Knightmare either side may move. By Peter Aronson.
- Confusion Chess1b . Every piece is replaced by something roughly equivalent that moves strangely. Author: Peter Aronson. Inventor: Ralph Betza.
- Cows and Butterflies . A simple Chess-like game of exchanges and promotions. Author: Peter Aronson. Inventor: Jennifer Aronson.
- Cross Chess . Game played on a cross-shaped board. Author: Peter Aronson. Inventor: Leigh Miller.
- Dabbabante Chess. Variant played on a 10x10 board with Super Dabbabah pieces. Author: Peter Aronson. Inventor: Vernon Rylands Parton.
- Delegating Chess . 84 square variant in which pieces delegate moving powers. Author: Peter Aronson. Inventor: João Pedro Neto.
- Double Diamond . Irregular board with diagonal orientation. Author: Peter Aronson. Inventor: Jim Aikin.
- Double-Ended Chess. Captures are by withdrawal and approach. By Peter Aronson.
- Double-Pawn Chess . Pawns may combine into Double-Pawns which move twice a turn. By Peter Aronson.
- Edgehog Chess . Three Chess variants featuring John Driver's edge-loving piece the Edgehog. Author: Peter Aronson. Inventor: John Driver.
- Elbow Room . Usual set of pieces and eight additional pawns per player on 8 by 16 board. Author: Peter Aronson. Inventor: David Short.
- Espionage Chess . Spy can only be captured in turn after it has moved in 41-square variant. Author: Peter Aronson. Inventor: Sergey Sirotkin.
- Every Man a Pawn. Each piece has the powers of a Pawn (except promotion) in addition to its normal powers. By Peter Aronson.
- Fanorona Chess . Variant played on a Fanorona board with capture by approach and by withdrawal. By Peter Aronson.
- Feebback Chess . Variant where pieces are "feeble backwards" -- backwards moves can not capture. By Peter Aronson.
- The Fighting Fizzies . An Experimental Army for Chess with Different Armies. By Peter Aronson.
- Free Corners chess . In the corners of seven by seven board, three squares form together one field. Author: Peter Aronson. Inventor: Sergey Sirotkin.
- Full Double Chess . 32 pieces each, including all combinations of the basic Chess pieces, on a 16x8 square board. Author: Peter Aronson. Inventor: Sergey Sirotkin.
- Fun-In-A-Box Chess . Featuring Thing One and Thing Two from The Cat in the Hat. Author: Peter Aronson. Inventor: David Howe.
- Goal Box Chess . Game on 42 squares with no King and the goal of placing pieces into 2 special squares. Author: Peter Aronson. Inventor: Kevin McPartland.
- Golem Chess . Variant where the Queen is replaced by the Golem, a piece that must be captured twice to remove it from play. Author: Peter Aronson. Inventor: Peter Aronson and Ben Good.
- Gothic Isles Chess . Fictional historic variant, with Dragons, Wizards and Champions. By Peter Aronson.
- Halfgi . A hybrid of Chessgi and Ralph Betza's Half Chess. By Peter Aronson.
- Halfling Chess . Game where all pieces (except Knights) are Halflings. Author: Peter Aronson. Inventor: Ralph Betza.
- Herb Garden Chess . Variant on 7 by 12 board with additional combination pieces. Author: Peter Aronson. Inventor: William Overington.
- Home Columns Chess. A piece cannot be captured when in its 'home' column. Author: Peter Aronson. Inventor: Ted Clancy.
- Hopgi . Small-board variant of Chessgi with an L-shaped board, linked pairs of Kings, where all pieces can move like a Mao-hoppers. By Peter Aronson.
- Horus . Game with Royal Falcons where all pieces start off board and most captures return pieces to owner's hand. By Peter Aronson.
- Illusionary Piece Chess . A piece and a Pawn on each side are more powerful, but can not offer check or prevent bare King. By Peter Aronson.
- Imperial Dragon . A variant of Xiangqi designed to appeal to western players. Author: Peter Aronson. Inventor: Paul Fredrix.
- Interweave . Game with elements of Checkers and Ultima where all pieces are colorbound and only capture pieces on the other color. By Peter Aronson.
- Jumping Chess . Pieces capture by jumping. Board has extra edge squares making it 10x10. By Peter Aronson.
- King with a Shotgun . Twice each game, the King can make a non-moving Rook capture. Author: Peter Aronson. Inventor: Adam Norberg.
- Kings and Pawns . Proprietary game on 8 by 7 board with two types of pieces and no capturing. Author: Peter Aronson.
- Knight Scattering Chess. Knights can neither capture nor be captured, but instead can move opposing pieces a Knight's move away. Author: Peter Aronson. Inventor: Sergey Sirotkin.
- Knightmate-Relay Chess . Played with a royal-knight and special movement rules for pieces a knight's move away. By Peter Aronson.
- Kristensen's Game . A conscious attempt to restructure Chess from 1948. Author: Peter Aronson. Inventor: Ejnar Kristensen.
- Legler's Chess . Modest 1926 variant using an Archbishop and a Chancellor. Author: Peter Aronson. Inventor: Hugo Legler.
- Life, the Universe and Everything . 42-square double-move variant with unusual pieces, inspired by Douglas Adams' fiction. Author: Peter Aronson. Inventor: João Pedro Neto.
- Lilliputian Monochromatic Alice Chess . All pieces are colorbound, and switch boards rather than switching color. By Peter Aronson.
- Little Dragon Chess . Modern small variant of Xiangqi on board of 41 squares. By Peter Aronson.
- Mad Elephant Chess . Pawns can be turned into Elephants; Elephants can promote to Mad Elephants, and Mad Elephants can trample lines of pieces. By Peter Aronson.
- Mage. Rooks cannot be captured or capture, and the Queen is replaced by a Mage. Author: Peter Aronson. Inventor: Oliver Xymoron.
- Magna Carta Chess. lack has the FIDE array, White has a Marshal and an Archbishop instead of a Queen and King. Author: Peter Aronson. Inventor: Charles Gilman.
- Mercurial Chess . A variant on 42 squares with a satallite board and the rescure of captured pieces. Author: Peter Aronson. Inventor: Mark Hedden.
- Mini Slanted Escalator Chess . Chess on smaller asymmetric board. Author: Peter Aronson. Inventor: David Short.
- Modern Kamil . A set of variants adding Camels or Camel-like pieces to the Orthochess array. Author: Peter Aronson. Inventor: Nuno Cruz.
- Moon Chess . Played with a Xiangqi set, but with different rules. Author: Peter Aronson.
- Mulligan Stew Chess . 42-Square Swapping-Mage Teleporting-Assassin Dual-Color-Bound-King Limited-Double-Move Leaping-Pawn Chess. By Peter Aronson.
- Nearly Colorboundmost Chess . Game where all pieces except the Pawns are entirely colorbound, and interactions between colors are weak. Author: Peter Aronson. Inventor: Ralph Betza.
- Neighbors . Try to capture the most pieces on a 42-square board completely filled with neutral pieces. Author: Peter Aronson. Inventor: Rob Nierse.
- Neutral King Chess . V.R. Parton's game where two armies share a King both must try to mate. Author: Peter Aronson. Inventor: Vernon Rylands Parton.
- Not-particularly-new Chess . A fairly restrainted variant on a 9x8 board, with Cardinals, Unicorns and Jesters. By Peter Aronson.
- Outback Chess . New pieces on plus-shaped board. Author: Peter Aronson. Inventor: Timothy R. Newton.
- Pachessi . Race and chess game on board formed by removing 3 by 3 square from center of 7 by 7 square. By Peter Aronson.
- PieceEater Chess . Yet another game with an indestructible randomly-wandering neutral piece. By Peter Aronson.
- Potential/Demotion Chess . Pieces may move like lower-ranked piece, but when doing so, become that lower ranked piece. By Peter Aronson.
- Prisoner's Escape . Free your Prisoner by getting it to an unattacked square -- a small board version of Anticheckmate Chess. By Peter Aronson.
- Quintessential Chess . Large chess variant, with some pieces moving with a sequence of Knight moves in a zigzag line. Author: Peter Aronson. Inventor: Jörg Knappen.
- Ramayana Chess . Chess variant inspired by the Ramayana epic. Author: Peter Aronson. Inventor: Luiz Carlos Campos.
- Rank behind Rank . 30 pieces on a side with two Kings each on a 6 by 12 board. Author: Peter Aronson. Inventor: Sergey Sirotkin.
- Rebel Chess . King's Pawn is replaced by Recruiter piece that moves like an Alfil and can change a piece's side. Author: Peter Aronson.
- Reenterent Chess . There is one additional square where taken pieces can wait to reenter 5 by 8 main area. Author: Peter Aronson. Inventor: Edward Lovett.
- Regulator Chess . Game on a 35 square board with a 7 square track on which a piece moves that determines how Knights and Bishops can move. Author: Peter Aronson. Inventor: Samuel H. Bell.
- Rhino Chess . Collection of variants designed to demonstrate the Rhino family of pieces. By Peter Aronson.
- Rococo . A clear, aggressive Ultima variant on a 10x10 ring board. Author: Peter Aronson. Inventor: Peter Aronson and David Howe.
- Rolling Kings . Kings must move along a predetermined path. By Peter Aronson.
- Royal Amazon Chess . Queens are replaced by Royal Amazons. By Peter Aronson.
- Rubble Chess . Pieces must clear out unoccupied squares before they can move through them. Author: Peter Aronson. Inventor: Adam Norberg.
- Ruddigore Chess . Chessgi variant where you can capture your own pieces, and every other turn you must capture or sacrifice a piece. By Peter Aronson.
- Ryu Shogi . Large modern shogi variant. Author: Peter Aronson. Inventor: Jared B. McComb.
- Sacred King Chess . It is not legal to check your opponent's King, so victory is by stalemate or bare King. By Peter Aronson.
- Schizophrenic Chess . Game on 12x7 board with Left and Right Schizzys, Bobbers, Teleporters and other exotic pieces. Author: Peter Aronson. Inventor: David Short.
- Seenschach . Variant on 10 by 10 board with lake in the middle and new pieces. Author: Peter Aronson. Inventor: Jörg Knappen.
- The Seeping Switchers . An army for Chess with Different Armies based on pieces that change color when they move. Author: Peter Aronson. Inventor: Jörg Knappen.
- Separate Realms Chess . Pieces capture like normal FIDE pieces, but have limited moves that only take them to part of the board when not capturing. Author: Peter Aronson. Inventor: Michael Nelson and Peter Aronson.
- 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.
- Slanted Escalator Chess . Chess on an asymmetric board with interesting connectivity. Author: Peter Aronson. Inventor: David Short.
- Snake Chess . A variant played on a 2 by 12 cyclindrical board. Author: Peter Aronson. Inventor: Sergey Sirotkin.
- Snark Hunt . Variant with unequal armies on board with 41 squares, inspired by a poem of Lewis Carroll's. By Peter Aronson.
- Spacious Cannoneers . Experimental Army for Chess with Different Armies vs the traditional CDA Armies. Author: Peter Aronson. Inventor: Ralph Betza.
- Spinal Tap Chess . Variant on an 11x11 board with a once-a-game mass 'Battle Move' of Pawns and Crabs. Author: Peter Aronson. Inventor: David Short.
- Spinal Tap vs Terror Chess . The Spinal Tap Chess army vs the Terror Chess army in the battle of the 11x11 variants. Author: Peter Aronson. Inventor: David Short.
- Star Pool Chess . Large variant of Makruk, with a center non-square that acts as a bridge. Author: Peter Aronson. Inventor: Peter Aronson and Tony Quintanilla.
- Subway Chess . In a turn, player moves first middle subway part of board and then a piece. Author: Peter Aronson. Inventor: Francois Tremblay.
- Switching Realms Chess . All noncapturing moves must change the board subset a piece occupies. Author: Peter Aronson. Inventor: Jörg Knappen.
- Tandem-84 . Variant on two boards of 7 by 6 rows with pieces moving between boards. Author: Peter Aronson. Inventor: Jim Aikin.
- Tapestry . Chess on a four-color 6x6 board, with a 5 square control board. Author: Peter Aronson. Inventor: David Howe.
- Thinktank Chess . Frank Maus' game where most pieces move differently when capturing from how they move without capturing. Author: Peter Aronson. Inventor: Frank Maus.
- This Game is for the Birds . Game where pieces fly past obstacles and some pieces capture by pecking. Author: Peter Aronson. Inventor: Ralph Betza and Peter Aronson.
- Thronschach . A game on 42-squares with throne squares, and an interesting mix of pieces. Author: Peter Aronson. Inventor: Glenn Overby II.
- Toe to Toe Chess . A variant of Sittuyin (Burmese Chess) with alternating setup, and powerful, short-range pieces. By Peter Aronson.
- Too Many Elephants. All pieces can move leap two squares on the diagonals like Elephants/Alfils in addition to their normal move. By Peter Aronson.
- Tournament Chess with Different Armies . Chess with Different Armies ZRF for the Chess with Different Armies e-mail tournament. Author: Peter Aronson. Inventor: Ralph Betza.
- Toystore Chess. A problem-like Chess variant on a 5x5 board with free placement. Author: Peter Aronson. Inventor: Richard Stack.
- Train Wreck Chess . Move your piece, then one of your opponent's, but only forward. By Peter Aronson.
- Tripunch Chess. Knights become Nightriders, Rooks add Gryphon moves, Bishops add Aanca moves, and Queens become unbelievable. Author: Peter Aronson. Inventor: Ralph Betza.
- Triumvirate Chess . Uses three Knights. The last remaining opposing Knight must be checkmated as the King. Author: Peter Aronson.
- Trubix . Chess variant on board with 41 squares. Author: Peter Aronson. Inventor: David Short.
- Trubix-43 . Unique piece and lines of movement on an hourglass board. Author: Peter Aronson. Inventor: David Short.
- Twenty-first Century chess . A Zillions file to play an updating of Chess for the video game generation, on a 10x8 board with Barons and Jesters. Author: Peter Aronson.
- Twiknight . Knights can make one double move a game, and always check with a double move. Author: Peter Aronson. Inventor: Jens Baek Nielsen.
- Two Kingdoms . A decimal variant with a more powerful knight, and an added Archer piece. Author: Peter Aronson. Inventor: Nuno Cruz.
- Ultra Slanted Escalator Chess . Game on an asymmetrical board of 84 squares with Crabs and Ultras. Author: Peter Aronson. Inventor: David Short.
- Warp Point Chess. Knights are replaced by Warp Points that other pieces can move between. Author: Peter Aronson. Inventor: Jason Shields.
- White Elephant Chess . Four variants pitting the white Elephant army against black with the normal FIDE array. By Peter Aronson.
- Wild Jokers . 7 by 7 board with 8 pits and various pieces, including jokers that can make successive jumps across pit. Author: Peter Aronson. Inventor: Jeff `Cavebear` Stroud.
ZSG
- Cavalier Zillions Saved Game . Download this file to see this game played in the Multivariant Play by E-Mail Tournament. Author: Tony Quintanilla and Peter Aronson. Inventor: Fergus Duniho.
- Grand Chess . Download this Zillions Saved Game file to see this game played in the Multivariant Play by E-Mail Tournament. Author: John Lawson and Peter Aronson. Inventor: Christian Freeling.
- Jumping Chess Zillions Saved Game . Download this file to see a sample game. Author: Tony Quintanilla and Peter Aronson. Inventor: Peter Aronson.
- Lions and Dragons Chess . Download this file to see this sample game. Author: Peter Aronson and Tony Quintanilla. Inventor: Tony Quintanilla.
- Rococo Zillions Saved Game . Download this file to see this game played in the Multivariant Play by E-Mail Tournament. Author: Peter Aronson and John Lawson. Inventor: Peter Aronson and David Howe.
- Star Pool Chess Zillions Saved Game . Download this file to see a saved game. By Tony Quintanilla and Peter Aronson.
- ximeracak. Zillions Saved Game. . Download this file to see this game played in the Multivariant Play by E-Mail Tournament. Author: Peter Aronson and Michael Nelson. Inventor: Glenn Overby II.
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