- 3D Chess Federation
- Offers information about various types of three-dimensional chess. - Beyond Chess
- An opportunity to examine the dimensions of chess. - Chess Variants
- Material on chess variants: games that are a variant of chess, e.g., Japanese chess, historic variants, bughouse, etc. - cHEXx
- Multi player game for 2-6 people. - Fabio Forzoni's Eterochess Page
- Chess variants info in Italian. - HexiChess
- 3D chess game that uses hexagons instead of squares. - Joćo Neto's Chess Variants
- Includes Magnetic Chess, Diplomacy, and more. - Martian Chess (Jetan) (4)
- Explore Jetan, the version of Martian Chess invented by Edgar Rice Burroughs in one of his Barsroom book series, The Chessmen of Mars. Sites offer the legend, game rules, and moves in the strategy game which represents the war between the yellow and black races of Martians.
- PowerChess
- Explains the rules of chess on a board with 66 squares. - Quadlevel 3D Chess
- Allows user to watch and participate in quad level chess games.
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