Inventors Starting with R

• Becca Rabong [info] Paloma Chess. Game with Royal Queen, promotable Kings, and an unusual array. (8x8, Cells: 64) Paloma Chess. Game with Royal Queen, promotable Kings, and an unusual array.
• Filip Rachunek [info] BrainKing.com. Play by email site that lets you play several chess variants.
• Samay Raina [info] Poison Pawn Chess. Capture the wrong pawn and you lose.
• Alex Randolph [info] Knight Chase. Game played on with two Knights on a Chessboard with differing goals. (8x8, Cells: 64) Mad Mate . Wooden set for chessgi: captured pieces change hands and can be used as reinforcement.
• Vladislav Rapetsky [info] Chess without pawns. Variant where only kings can take and no pawns are used. (8x8, Cells: 64) Chess without pawns . Variant where only kings can take and no pawns are used.
• Vincenzo Rapisardi [info] Babel Chess. Sub-variant of Banzai where you can push more than 1 piece per move. (8x8, Cells: 64) Banzai Chess. Friendly pieces can be pushed and pushed pieces can bounce. (8x8, Cells: 64)
• W. H. Rawlings [info] Proximity Chess. Players must move pieces nearest to the arrival square of the last piece moved. (8x8, Cells: 64) Actuated Rotating Center Chess. Center rotates, you choose when and how. Plaid Chess. Progressive Grid chess.
• Mike Reeves-McMillan [info] Merger Chess. Pieces are merged into the capturing piece. (8x8, Cells: 64)
• Ken Regan [info] Baseline chess with Fischer rules. Start with dropping major pieces on baseline, a variant that uses rules from Fischer Random Chess but is not random. (8x8, Cells: 64)
• Kenneth Regan [info] Tandem-Pawn Chess. Pawns are tandems of two pawns, which can move or capture as a unit, or decouple into two pawns. (8x8, Cells: 64)
• V. Reinhart [info] Chess on an Infinite Plane. Chess game with no boundaries (infinite board), and Guard, Chancellor, and Hawk. () Trappist-1. Chess game with no boundaries. includes Guard, Chancellor, Hawk, and Huygens. ()
• Ben M Reiniger [info] TessChess. 4D chess featuring symmetrically-moving pieces. (4x(4x(4x4)), Cells: 256) TessChess. 4D chess featuring symmetrically-moving pieces.
• Yu Ren Dong [info] Chess with Different Periods. Missing description (6x6, Cells: 36) Groundskeeper Chess. Missing description (8x8, Cells: 64) Huntsman Chess. Missing description (9x9, Cells: 80) , more...
• Dave Reynolds [info] Circular Chess. Chess on a round board. (16x4, Cells: 64) (Recognized!) The Circular Chess Society Information Pack. Rules of Circular Chess and Information on the Circular Chess Society. (Cells: 64) Circular. Missing description, more...
• Jim Reynolds [info] Not Chess. Mixes elements of Chinese and FIDE Chess.
• Eric Richardson [info] Eric's 40-square Fiasco!. Game on 5 by 8 board with three pieces that start in reserve. (5x8, Cells: 40) Eric's 40-square Fiasco . Game on 5 by 8 board with three pieces that start in reserve.
• Ian Richardson [info] Chatty Chess. Four-handed game using normal board and pieces. Chitty-Chatty Chess. Four-handed partnership game intended to introduce newcomers to Chess.
• Heinrich Richter [info] Schachdame. Variant between Checkers and Chess. (8x8, Cells: 64) Schachdame Chess. Pawns, a bishop, and a royal ferz. Schachdame . Variant between Checkers and Chess.
• Johan Richter [info] Center of Attention Chess. In addition to regular rules, win by moving your King to a center square. Center of Attention. FIDE Chess but with an additional winning condition: Move your king unchecked into a center square.
• Jeff Rients [info] By Rook Or by Crook. Chess in the round on a hexagonal board with 42 trapezoidal squares. (Cells: 42) Mob Strategy. Mob Strategy, The Takeover Game, presented by The Game Pile. SpaceWarp44. 44 square board has warp squares that allow a teleport to another warpsquare. (5x9, Cells: 44) , more...
• Peter Riessen [info] Arktur. Two kings and randomized setup. (8x8, Cells: 64) Arktur. Met twee koningen en willekeurige beginstand (Dutch Language) Arktur Chess. Random first ranks, two kings.
• Patrick Riley [info] 4 Armies. Each player controls two armies. (10x10, Cells: 100) Fault Line. Fault Line. (8x6, Cells: 40) Riley's Four Army Chess. Several ways to win., more...
• martin rinab [info] ObstructionChess.com. A new chess variant designed to challenge old strategies and improve your chess play with logical and organic obstructions. (8x8, Cells: 64)
• Karen Robinson [info] Citadel. Simple chess variant from early 20th century on 45 degrees turned board. (8x8, Cells: 64)
• Karen Robinson [info] Safe Passage. Move pieces to opposite side without putting pieces in danger of capture. Temple Island Chess. Solo game with shadow pieces.
• Karen Robinson [info] Using chess sets to play mini-sukoku (6x6). Missing description (8x8, Cells: 64) Chess Contradance. Move pieces to the other side of the board without attacking each other. Fast Chess Contradance. Solitaire chess puzzle: four white and four black pieces must change places without attacking., more...
• William Robinson [info] Chess Warriors . Customizable strategy war game played on a checkerboard.
• Clark Rodeffer [info] Dino-Czars. Battle between rival dinosaurs on a board of 42 triangles, where facing counts. (Cells: 42) Dino-Czars . Battle between rival dinosaurs on a board of 42 triangles, where facing counts.
• Mark Rogers [info] Cutthroat ForChess. Four players, each playing alone, on an ordinary board.
• Tom Rogers [info] Forchess . Four player chess variant on 8 by 8 board. ForChess. Four player chess variant on 8 by 8 board. Forchess . Four player chess variant on 8 by 8 board.
• Richard Rognlie [info] Richard's Play-By-eMail Server. Play any of 21 chess variants via email.
• Henry Rolling [info] Doubles Chess. A four-player game for two teams on an unusual board.
• V. Romanchenko [info] Romanchenko's Chess. A board with a kind of Z-form. (10x8, Cells: 64) Romanchenko's Chess. New chessboard with sides displaced. Romenchenko's Chess. Play Chess on a slightly shifted board with Jocly., more...
• S John Ross [info] Mastery: A Game of Skill for Two Players . A Game of Skill for Two Players.
• Charles Roth [info] Star Trek 3-D Chess Rules. Charlie Roth's Revision of Star Trek 3D Chess.
• Daniel Roth [info] The Pit. 10 by 10 board has pit in the middle that can be crossed by Sorcerer piece. (10x10, Cells: 84) Sigma 4 Shogi. Missing description (7x7, Cells: 49) The Pit. A pit over which only one of the pieces may jump., more...
• Ulrich Roth [info] Mouse and Elephant . Large variant of the Jungle game.
• Michael A. Rouse [info] Hexmate. A two-player variant on a hex board made up of 127, 3-color hexagons. (Cells: 127) Undenary Chess. Large variant with superpowerful King; a square version of Hexmate. (11x11, Cells: 121) Hexmate. A two-player variant on a hex board made up of 127, 3-color hexagons., more...
• Jonathan H Rutherford [info] Ito Shogi. Missing description (1x31, Cells: 21) Longshanks Chess. Missing description (12x12, Cells: 84) Rutherford's 1-dimensional Shogi. Modern one-dimensional chess variant, based upon Shogi. (1x17, Cells: 17) , more...
• A.K. Porterfield Rynd [info] Diamond Chess. Based on orthodox chess but rotated 45 degrees (invented in 1886). (8x8, Cells: 64)