Smess. Produced and sold in the early 70's by Parker Brothers. Arrows on squares determine direction pieces can move. (7x8, Cells: 56) (Recognized!) Author: Fergus Duniho and David Howe. Inventor: Reuben Klamer.
Schizophrenic Chess. Game on 12x7 board with Left and Right Schizzys, Bobbers, Teleporters and other exotic pieces. (12x7, Cells: 84) By David Short.
Schizophrenic Chess . Game on 12x7 board with Left and Right Schizzys, Bobbers, Teleporters and other exotic pieces. (12x7, Cells: 84) Author: Peter Aronson. Inventor: David Short.
School Chess. Before movement of a figure, the player speaks the name of city on the letter, on which the name of a moved piece begins. By Sergey Sirotkin.
Scirocco . On ten by ten board with over thirty different pieces. (10x10, Cells: 100) By Adrian King.
Scirocco. On ten by ten board with over thirty different pieces. (10x10, Cells: 100) By Adrian King.
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.
Separate Realms Chess II. A Variant of Separate Realms Chess with standard FIDE King, and more powerful Knights and Queens. (8x8, Cells: 64) By Jörg Knappen.
Shifted Square Chess. One square is removed from the normal playing area and one square is added at the edge of the normal playing area. (8x8, Cells: 64) By Ralph Betza.
Shifting Chess. Variant inspired on shifting puzzles; one can move pieces of the board. (8x8, Cells: 56) By David Howe.
Shifting Sands Chess. Special squares -- which can be dropped and moved -- change the types of pieces that land on them. (6x7, Cells: 42) By Tony Quintanilla.
Shifting Sands Chess . Special squares -- which can be dropped and moved -- change the types of pieces that land on them. (6x7, Cells: 42) By Tony Quintanilla.
Shogi. Play the Japanese form of Chess, in which captured pieces can be dropped back as your own. (9x9, Cells: 81) (Recognized!) Author: Fergus Duniho.
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.
Sissa. Move exists of moving a number of squares as rook and an equal number of squares as bishop. Author: Ben Good. Inventor: Carlos Cetina.
Sissa . Variant on 9 by 9 board with Sissa's, which move like a Bishop than a Rook, or like a Rook, then a Bishop. (9x9, Cells: 81) Author: Uwe Wiedemann. Inventor: Carlos Cetina.
Sissa. Variant on 9 by 9 board with Sissa's. (9x9, Cells: 81) By Carlos Cetina.
Skirmish Chess . Pawns start on the 3rd and 6th ranks with no double-move, pieces on the 2nd and 7th ranks. (8x8, Cells: 64) Author: Marek14 . Inventor: Tony Paletta.
Skirmish Chess. Pawns start on the 3rd and 6th ranks with no double-move, pieces on the 2nd and 7th ranks. (8x8, Cells: 64) Author: Ed Friedlander. Inventor: Tony Paletta.
Skock. 64 pieces on an 8 x 8 board. Dice determine how far pieces can be moved. (8x8, Cells: 64) By Ulf Göransson.
Smess. Produced and sold in the early 70's by Parker Brothers. Arrows on squares determine direction pieces can move. (7x8, Cells: 56) (Recognized!) Author: Fergus Duniho and David Howe. Inventor: Reuben Klamer.
Smess . Produced and sold in the early 70's by Parker Brothers. Arrows on squares determine direction pieces can move. Author: Fergus Duniho.
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.
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.
Sneaky. A WinBoard Compatible Chess Engine that plays Cheapmate Chess. (8x8, Cells: 64) Author: Gary Baydo. Inventor: Robert Price.
Sniper Chess. Frank Maus' game where most pieces move differently when capturing from how they move without capturing. (8x8, Cells: 64) Author: Ed Friedlander. Inventor: Frank Maus.
Spinach Chess. Right to make powerfull move alternates between players in variant with two kings. (8x8, Cells: 68) By Hans L. Bodlaender.
Spinal Tap Chess. Variant on an 11x11 board with a once-a-game mass 'Battle Move' of Pawns and Crabs. (11x11, Cells: 121) By David Short.
Spinal Tap Chess . Variant on an 11x11 board with a once-a-game mass 'Battle Move' of Pawns and Crabs. (11x11, Cells: 121) Author: Peter Aronson. Inventor: David Short.
Spinal Tap Chess Redux. Updated version of Spinal Tap Chess with some pieces from Existentialist Chess. (11x11, Cells: 121) By David Short.
Spinal Tap vs Terror Chess. The Spinal Tap Chess army vs the Terror Chess army in the battle of the 11x11 variants. (11x11, Cells: 121) By David Short.
Stability Chess. Designed to minimize the first-move advantage by white, maximize fairness, and simplify the rules of chess. (8x8, Cells: 64) Author: Larry L. Smith. Inventor: Various.
Standoff Chess. A threat to capture the opponent's King does not give check if it opens one's own King to immediate recapture. (8x8, Cells: 64) By Robert Shimmin.
Strato Chess. Information (no rules) about a quarter-century old three dimensional chess variant. (8x8x3, Cells: 192) Author: Jonathan Alden and Mark Hummel.
Super King. King moves as queen but cannot move across a square under attack. Author: Ed Friedlander.
Super-Chess. On a 12x12 board with slightly more powerful pawns and knights. Armies start back-to-back. (12x12, Cells: 144) By Prashant Hindurao Sawant.
Superchess. Four-handed chess game playable by two or four players. (Cells: 148) Inventor: Rolf W. Jacobson.
Sylph. Air nymph, that moves diagonally forwards (non capturing) or forwards or downwards for capturing.
Symmetric Sissa . Variant on 9 by 9 board with symmetric setup and two Sissa's (generalized Knight-like sliders). (9x9, Cells: 81) Author: Uwe Wiedemann. Inventor: Carlos Cetina.
Symmetric Sissa. Variant on 9 by 9 board with symmetric setup and two Sissa's (generalized Knight-like sliders). (9x9, Cells: 81) By Carlos Cetina.