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Lichess (/ ˈ l iː tʃ ɛ s /; LEE-ches) [3] [4] is a free and open-source Internet chess server run by a non-profit organization of the same name. Users of the site can play online chess anonymously and optionally register an account to play rated games.
Richard Réti. The Réti endgame study is a chess endgame study by Richard Réti.It was published in 1921 in Kagans Neueste Schachnachrichten.It demonstrates how a king can make multiple threats and how it can take more than one path to a given location, using the same number of moves.
Online chess has existed in various forms including PLATO and play-by-email since the dawn of the Internet in the 1970s. The first Internet server designed for online chess was the Internet Chess Club (known at the time as ICS), which started operation in 1992. [1]
Three-check chess, also simply known as three-check, is a chess variant where a player can win by placing their opponent in check three times. Apart from this, standard rules of chess apply, including starting position and other ending conditions, such as stalemate and checkmate.
[5] [6] It was soon after incorporated into the Middle East Wild Internet Server (MEWIS) and other smaller servers before being implemented at Chess Live and Internet Chess Club in 2000, Free Internet Chess Server in 2003 and Lichess in 2015. [7] [8] It was added to Chess.com in late 2020. In 2021, 4.9 million atomic chess games were played on ...
The diagram illustrates a trap in the Advance Variation of the French Defence, based on a discovered attack.If, after 1.e4 e6 2.d4 d5 3.e5 c5 4.c3 Nc6 5.Nf3 Qb6 6.Bd3 cxd4 7.cxd4, Black mistakenly attempts to win White's d-pawn with 7...Nxd4?? 8.Nxd4 Qxd4 (diagram), White can play 9.Bb5+, a discovered attack (White's bishop gets out of the way of White's queen) against Black's queen with check.
While a chess puzzle is any puzzle involving aspects of chess, a chess problem is an arranged position with a specific task to be fulfilled, such as White mates in n moves. Chess problems are also known as chess compositions because the positions are specially devised, rather than arising from actual games. Chess problems are divided into ...
Chess tactics – a chess tactic is a move or sequence of moves which may result in tangible gain or limits the opponent's options. Tactics are usually contrasted with strategy, in which advantages take longer to be realized, and the opponent is less constrained in responding.
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