What is Crazyhouse?

Crazyhouse (ZH for short) is a chess variant in which an opponent's captured piece can be dropped onto an unoccupied square of the board instead of playing a piece already on the board. Crazyhouse is a chess variant similar to bughouse, but with only two players. Other names for this variant are drop chess, mad chess, reinforcement chess, turnabout chess and schizo-chess. It is also known as wild 23. The exact origins of the game remain veiled in mystery, but with the birth of online chess, it has taken off in popularity among a niche of enthusiasts, including many international masters and grandmasters of the regular game.

RULES


All the rules and conventions of standard chess apply, with the addition of drops, as explained below.

• A captured piece reverses colour and goes into the capturing player's pocket which you can see beside your board. Instead of making a move with a piece on the board, a player can instead drop a piece from their pocket onto an empty square on the board. 

The notation for drops uses the @ : for example B@g5 denotes a bishop drop on g5, while @g5 where the piece is not specified means it was a pawn drop.


• Pawns may not be dropped on the players' 1st or 8th ranks. 


• Promoted pawns when captured revert to being pawns in the opponent's pocket.

• Drops may put the opponent into check or even checkmate.

Rules-page on lichess with video: https://lichess.org/variant/crazyhouse

WHERE TO PLAY?


lichess.org, chess.com and the Free Internet Chess Server (FICS)

—Compiled by MMichael
 

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