Editing Bughouse chess (section)

=== Online ===<!-- This section is linked from [[Bughouse chess]] -->
Since 1995, Bughouse has been available online at [[chess server]]s such as [[Free Internet Chess Server|FICS]] and [[Internet Chess Club|ICC]] and, as of 2016, at [[Chess.com]].<ref>von Zimmerman (2006), p. 239</ref> FICS was historically the most active server for bughouse, attracting the world's best players like [[Levon Aronian]],<ref>von Zimmerman (2006), pp. 5–9, 16, 25, 95 and 240</ref> but it is much more likely to find a game more quickly at [[chess.com]].

The game is played online in the same way as over the board, but some aspects are unique to online bughouse. In games over the board, communication is heard by all players, while in online bughouse it is usually done via private messages between two partners. This makes communication a more powerful weapon. It is also easier to coordinate as the second board is more visible on the screen than over the board.<ref>von Zimmerman (2006), p. 240</ref> The time aspect is altered due to existence of [[premove]] and [[lag (video games)|lag]]. The latter can influence the diagonal time difference significantly, and it is good sportsmanship to restart the game when this difference gets too large.<ref>Anders Ebenfelt's [http://reocities.com/Paris/metro/1324/ Bughouse page] {{Webarchive|url=https://web.archive.org/web/20140528173800/http://reocities.com/Paris/metro/1324/ |date=2014-05-28 }}. Accessed August 29.</ref>

[[internet chess server|ICS]] compatible interfaces particularly suitable for bughouse include [https://www.freechess.org/Newsletter/Dec-2001/thief.html Thief ] and [https://www.chess.com/forum/view/chess-equipment/babas-chess BabasChess]. They have the ability to display both boards at the same time and store played or observed games; they also have partner communication buttons and a lag indicator. Special [[Chess Engine Communication Protocol]] compatible [[chess engine|engines]] have been written that support bughouse, examples are Sunsetter, Sjeng and TJchess.<ref>[http://sunsetter.sourceforge.net/ Homepage of Sunsetter]. Accessed July 29, 2007.</ref><ref>[http://www.sjeng.org/indexold.html Homepage of Sjeng]. Accessed July 29, 2007.</ref><ref>[http://www.tonyjh.com/chess/ Homepage of TJchess]. Accessed July 29, 2007.</ref> Although much faster than humans, they lack in positional understanding and especially in coordination and communication, an essential skill in this team game.<ref>Georg von Zimmerman (2000), ''Figuren recycling'', Computerschach und Spiele 5/00 p44–46 (in German).</ref>

In 2016, bughouse was introduced as a part of new version of [[Chess.com]] with browser-based play.<ref>[https://www.chess.com/article/view/the-new-chess-com-v3-now-with-bughouse Bughouse on Chess.com]</ref>

====World Championship====
Chess.com has hosted an annual Bughouse World Championship with a prize fund. Winners have included:
* 2023: [[Lars Oskar Hauge|GM Lars Hauge]] & [https://ratings.fide.com/profile/3702308 GM Guillermo Vazquez]
* 2022: [[Awonder Liang]] & [[Jeffery Xiong]]
* 2021: Awonder Liang & Jeffery Xiong
* 2020: [https://ratings.fide.com/profile/2029049 FM Daniel Yeager] & [https://ratings.fide.com/profile/2608359 Janak Awatramani]<ref>Chess.com, [https://www.chess.com/blog/MidnightFox/chess-com-bughouse-world-championship-2024 2024 Bughouse World Championship]</ref>