Crazyhouse

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a chess variant which incorporates the Shogi rule in which a player can drop a captured piece. A captured piece reverses its color and goes to the capturing player's reserve or pocket. At any time, instead of making a move with a piece on the board, a player can drop a piece from his reserve onto an empty square on the board.
 * Crazyhouse**,

Crazyhouse could be played with Zillions of Games by Jeff Mallett and Mark Lefler. A pioneer in implementing Bughouse and Crazyhouse with his engine Sunsetter was Georg von Zimmermann. More recently, Harm Geert Muller made the necessary extensions and generalizations of the Chess Engine Communication Protocol along with its XBoard and WinBoard GUIs to support Crazyhouse as well as other variants and games, and also published his new engine CrazyWa which supports Crazyhouse plus five Shogi variants. Multi Variant Stockfish, a Stockfish fork maintained by Daniel Dugovic, incorporated in various Lichess projects  , is able to play Crazyhouse as well. In 8 months, Stockfish-Crazyhouse was improved by 800 Elo points. In 2016, Ferdinand Mosca started to play Crazyhouse tournaments to maintain a rating lists.  =Engines= To expand this list of engines able to play Losing Chess, create a new engine page with the tag "[|crazyhouse]", or assign the tag to appropriate existing engine pages. > include component="pageList" hideInternal="true" tag="crazyhouse" limit="100"

=See also=
 * Bughouse
 * Proof-Number Search
 * Shogi

=Publications=
 * Sacha Droste, Johannes Fürnkranz (**2008**). //Learning of Piece Values for Chess Variants.// Technical Report TUD–KE–2008-07, Knowledge Engineering Group, TU Darmstadt, [|pdf]
 * Sacha Droste, Johannes Fürnkranz (**2008**). //Learning the Piece Values for three Chess Variants//. ICGA Journal, Vol. 31, No. 4

=Forum Posts=

2000 ...

 * [|programs to play crazyhouse / w23] by Georg von Zimmermann, CCC, January 06, 2001
 * [|Sunsetter(C) source released] by Georg von Zimmermann, CCC, June 04, 2001
 * [|Very interesting crazyhouse position-to Georg Zimmerman (sunsetter test)] by Lieven Clarisse, CCC, November 11, 2002

2005 ...

 * [|Variants and Board Size] by Harm Geert Muller, CCC, October 25, 2007
 * [|BugHouse / CrazyHouse under Winboard] by Harm Geert Muller, CCC, October 29, 2007
 * [|Winboard Crazyhouse alpha testers wanted!] by Harm Geert Muller, CCC, October 31, 2007
 * [|Variant ICS] by Harm Geert Muller, CCC, January 13, 2009

2010 ...

 * [|Shogi now operational on Variant ICS] by Harm Geert Muller, CCC, October 11, 2010
 * [|Xboard crazyhouse problem] by Steven Atkinson, CCC, March 23, 2012
 * [|Piece drops and horizon effect] by Harm Geert Muller, CCC, September 12, 2013
 * [|Creating a crazyhouse opening book for xboard] by Isaac Haïk Dunn, CCC, June 16, 2014

2015 ...

 * [|UCI engins for Suicide, Wild, Crazyhouse...] by Tasic Vladimir, CCC, March 24, 2015
 * [|Crazyhouse] by Ferdinand Mosca, CCC, May 02, 2015
 * 2016**
 * [|Awesome lichess :-)] by Marco Costalba, CCC, August 14, 2016
 * [|1st CCC World Computer Crazyhouse Championships] by Ferdinand Mosca, CCC, September 02, 2016
 * [|Crazyhouse tournaments and rating list] by Ferdinand Mosca, CCC, September 08, 2016
 * [|Proof-number search] by Harm Geert Muller, CCC, October 20, 2016 » Proof-Number Search
 * [|QS in Crazyhouse] by Harm Geert Muller, CCC, October 24, 2016
 * [|Stockfish Crazyhouse Engine] by Andreas Paulick, CCC, November 04, 2016
 * [|Crazyhouse Computer Championships 2016] by Ferdinand Mosca, CCC, November 17, 2016
 * [|Human vs Engine Top Crazyhouse match !] by Vincent Lejeune, CCC, December 01, 2016
 * [|Crazyhouse, man vs machine, the return of the revenge !] by Vincent Lejeune, CCC, December 13, 2016
 * [|crazyhouse promotions] by Erin Dame, CCC, December 30, 2016
 * [|New crazyhouse engine] by Harm Geert Muller, Winboard Forum, December 31, 2016 » CrazyWa
 * 2017**
 * [|Swiss Crazyhouse Tournament] by Carlos Pagador, CCC, January 02, 2017
 * [|Winboard variants online] by Erin Dame, CCC, March 22, 2017 » Chess Variants, WinBoard
 * [|crazyhouse tips?] by Erin Dame, CCC, March 27, 2017
 * [|2nd Crazyhouse Computer Championships 2017] by Ferdinand Mosca, CCC, December 07, 2017

=External Links=
 * [|Crazyhouse from Wikipedia]
 * [|Crazyhouse] by Fergus Duniho, [|The Chess Variant Pages]
 * [|Crazyhouse Chess Variant Association] by Ferdinand Mosca
 * [|1st CCVA Computer Championships 2016 - Challonge]

=References= =What links here?= include page="Crazyhouse" component="backlinks" limit="100"
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