- Anti-Gravity Chess. A newly-moved unit repels the nearest unit along each.
- Anti-Magnetic Chess. Like colors attract, opposites repel, along orthogonal lines.
- Arena Chess. Entry in the 32-move-maximum contest.
- Arktur Chess. Random first ranks, two kings.
- Aviation Chess. Knight pawns move and capture as bishops and can leap any number of units.
- Bachelor Chess. All pieces promote. Win in the usual way or by joining king and queen.
- Bankhouse Chess. Missing description
- Beirut Chess. One unit is secretly carrying a bomb.
- Bicapture Chess. You may capture, and be checked by, your own units.
- Capapranka Chess. A cap renders a square and any occupant non-functional.
- Carnivore Chess. Each turn, also move an uncapturable predator.
- Chameleon Chess. Begin with 16 pawns which evolve.
- Chatty Chess. Four-handed game using normal board and pieces.
- Checkless Chess. You may not check unless it is mate.
- Chess with Reserves. Load your units during the game.
- Chessers. Pieces may ride pawns to the end ranks.
- Coin. Missing description
- Confederation Chess. Two pieces can fuse into a stronger unit, and can dissociate.
- Conversion Chess. I chose this one to represent the entire family of co-chess.
- Coronation Chess. Bishop and rook can fuse to replace the queen.
- Creation Chess. Pieces on the far rank may give birth to hybrids.
- Ghost Chess. The ghosts of captured units reappear.
- Imitating Chess. Units move according to the FIDE move of the last enemy unit.
- Insane. Units mutate randomly.
- Insane II. Units mutate randomly. This time, you know what the unit will become.
- Iron Guard. Non-capturable guard replaces White queen.
- Korkser Chess. Local rules in parts of Germany.
- Korkser Chess II. Same as Korkser Chess, but without initial double pawn moves.
- Machine Gun Chess. Attacked units are removed. The object is to remove.
- Mage Chess. Queen can swap with any friendly unit.
- Mage Chess II. Queen can swap with any friendly or enemy unit.
- Mecklenbeck Chess. Pawns promote on 6th rank.
- Monochrome Chess. All units are of the same color. Win by accumulating captures.
- Norwegian Chess. Q/N and B/R transform after each move.
- Nuisance Chess. Co-chess variants in which empty cosquares are occupied by nuisances which may be captured by either side.
- Refusal Chess. You may refuse one enemy move per turn.
- Refuse Once Chess. You may refuse one enemy move per game.
- Schachdame Chess. Pawns, a bishop, and a royal ferz.
- Sudden Death Chess. If you do not capture, you must remove one of your own units.
- Synchronous Chess. The two sides truly move simultaneously.
|40 'Java Program' entries listed||1 'Three or more players' entry listed|
|1 'Hidden information' entry listed||1 'In a category all its own' entry listed|
|1 'Chess combined with some other game or sport' entry listed|
Total items listed: 40