Editing List of chess variants (section)

=== Variants with hidden information or use of chance ===
In contrast to standard chess, which is a game of [[complete information]], in these variants, the players do not have [[perfect information]] about the state of the board, or there is an element of chance in how the game is played after the initial setup of pieces.
*'''[[Beirut Chess]]''': Each player secretly equips one of their pieces with a “bomb” that can be detonated at any time, wiping out all pieces on adjacent squares. Win by  checkmating the opponent, or blowing up their king. By Jim Winslow (1992).
* '''ChessHeads''': Played with cards that change the game rules.<ref>[http://www.chessmate.com/ChessHeads.html ChessHeads] {{Webarchive|url=https://web.archive.org/web/20090328231508/http://www.chessmate.com/ChessHeads.html |date=2009-03-28 }} chessmate.com</ref><ref>[http://www.boardgamegeek.com/boardgame/12932 ChessHeads] {{Webarchive|url=https://web.archive.org/web/20091121134408/http://www.boardgamegeek.com/boardgame/12932 |date=2009-11-21 }} BoardGameGeek</ref>
* '''Choker:''' A combination of chess and [[poker]], with players betting on cards made up from pieces of a standard chess set.<ref>{{Cite web |title=CHOKER Launch New Game Combining Chess and Poker |url=https://www.pokertube.com/article/choker-launch-new-game-combining-chess-and-poker |access-date=2022-03-15 |website=PokerTube |archive-date=2023-03-14 |archive-url=https://web.archive.org/web/20230314210117/https://www.pokertube.com/article/choker-launch-new-game-combining-chess-and-poker |url-status=live }}</ref>
* '''[[Dark chess]]''' (or '''Fog of War chess'''): The player sees only squares of the board that are attacked by their pieces.<ref>{{cite web |title=What is Fog of War chess? |url=https://support.chess.com/article/1668-what-is-fog-of-war-chess |accessdate=April 8, 2021 |website=[[Chess.com]] |archive-date=April 13, 2021 |archive-url=https://web.archive.org/web/20210413025755/https://support.chess.com/article/1668-what-is-fog-of-war-chess |url-status=live }}</ref>
* '''[[Dice chess]]''' [multivariant]: The pieces a player is able to move are determined by rolling a pair of dice.{{sfnp|Pritchard|2007|pp=277-280}}
* '''Fantasy Chess''': Chess with wargaming added. Players fight for squares (which can be co-occupied) using dice. Can be expanded to four players; piece capability can improve each game.<ref>{{Cite web|url=https://www.shadowhex.com/|title=home page for Fantasy Chess|website=shadowhex.com|access-date=2019-06-22|archive-date=2019-07-30|archive-url=https://web.archive.org/web/20190730032025/https://www.shadowhex.com/|url-status=live}}</ref>
* '''[[Knightmare Chess]]''': Played with cards that change the game rules.
* '''[[Kriegspiel (chess)|Kriegspiel]]''': Neither player knows where the opponent's pieces are but can deduce them with information from a referee.
* '''No Stress Chess''': Marketed for teaching beginners, the piece(s) a player is able to move are determined by drawing from a deck of cards, with each card providing the rules for how the piece may move. Castling and ''[[en passant]]'' are disallowed.<ref>{{Cite web|url=https://boardgamegeek.com/boardgame/19918/no-stress-chess|title=No Stress Chess|website=BoardGameGeek|access-date=2019-06-22|archive-date=2019-06-22|archive-url=https://web.archive.org/web/20190622050215/https://boardgamegeek.com/boardgame/19918/no-stress-chess|url-status=live}}</ref>
* '''Panic Chess''': Player selects a piece to move, but the target square is randomized from all possible options. Captures are prioritized over non-capture moves. King, if no capture is possible, prioritizes a square not attacked by the opponent. Play ends with capture of king.<ref>{{Cite web|url=https://oreszczuk.pl/panicchess/|title=home page for Panic Chess|website=oreszczuk.pl|access-date=2022-11-01|archive-date=2022-11-01|archive-url=https://web.archive.org/web/20221101205759/https://oreszczuk.pl/panicchess/|url-status=live}}</ref>
* '''Playing cards on a chessboard''': A card game allowing open play on a board with rectangular sectors, just as in chess or [[Draughts|checkers]], but with the application of playing cards.<ref>{{Cite web|url=http://www.cardgameopen.64g.ru/en.htm|title=Playing card games on a chess board|access-date=2011-03-28|archive-date=2011-08-07|archive-url=https://web.archive.org/web/20110807040740/http://cardgameopen.64g.ru/en.htm|url-status=live}}</ref>
* '''Pokémon Chess''': Each player assigns a type from Pokémon to each of their pieces before the game starts. A capture on a piece depends on the type of the attacking piece and defending piece: If the attacking piece's type is super-effective towards the defending piece, the attacking piece gets to move again. If the attack is not very effective, both pieces will die, and if the defender is immune, the move is skipped. Additionally, on every capture, there is a chance of hitting a critical hit or missing, which makes the attacker go again or have their move skipped respectively. A player wins when they capture their opponent's king; there is no check.<ref>{{Cite web|url=https://pokemonchess.com/|title=Pokemon Chess|access-date=2024-01-11|archive-date=2024-01-11|archive-url=https://web.archive.org/web/20240111222334/https://pokemonchess.com/|url-status=live}}</ref>
* '''Quantum Chess''': Instead of a making a standard move, a player can make a "quantum move", which splits the piece being moved into a "superposition" of two locations, each with their own "probability". (Pawns cannot make quantum moves.) A succession of quantum moves can result in a piece being split into several superpositions. When that piece interacts with another piece, a measurement occurs, which causes the superpositions formed by the most recent quantum move in the history of that piece to be consolidated into a single location. The location of that consolidation depends randomly on the probabilities of the different superpositions. Playing the game by hand would require complex mathematical computations and a means of random number generation. There is a computer implementation available on the [[Steam (service)|computer game platform Steam]].<ref>{{Cite web|url=https://news.usc.edu/91856/the-next-generation-of-chess-is-here-and-it-involves-quantum-physics/|title=The next generation of chess is here, and it involves quantum mechanics|date=11 February 2016|access-date=24 June 2023|archive-date=24 June 2023|archive-url=https://web.archive.org/web/20230624230757/https://news.usc.edu/91856/the-next-generation-of-chess-is-here-and-it-involves-quantum-physics/|url-status=live}}</ref>
* '''Synchronous Chess''': Players try to outguess each other, moving simultaneously after privately recording intended moves and anticipated results. Incompatible moves, for instance to the same square with no anticipated capture, are replayed. Alternatively, two pieces moving to the same square are both captured, unless one is the king, in which case it captures the other. Play ends with capture of king.{{sfnp|Pritchard|2007|p=100}}
* '''Viennese Chess''': A barrier or screen between the two halves of the chessboard, two players then place their pieces on their half of the board. The barrier is then lifted and the game is then played as in standard chess.<ref>{{Cite web|url=https://www.chessvariants.com/diffsetup.dir/viennese.html|title=Viennese Chess|website=chessvariants.com|access-date=2019-06-22|archive-date=2019-06-22|archive-url=https://web.archive.org/web/20190622050213/https://www.chessvariants.com/diffsetup.dir/viennese.html|url-status=live}}</ref>