This article is about a type of move in chess. Chess is a recreational and competitive Game played between two players. Cross-checking is also a penalty in ice hockey. For clarity male pronouns will be used throughout this article A penalty in Ice hockey is a Punishment for inappropriate Behavior

This article uses algebraic notation to describe chess moves. Algebraic chess notation is used to record and describe the moves in a game of Chess.

In chess, a cross-check is a check played in reply to a check, especially when the original check is blocked by a piece which itself either delivers check or reveals a discovered check from another piece. Chess is a recreational and competitive Game played between two players. In games such as Chess, Shogi, and Xiangqi, a check is an immediate threat to capture the king (or general in xiangqi Chess pieces vary in both value and abilities A standard chess match consists of each player having the following equipment 1 king In Chess, a discovered attack is an attack revealed when one piece moves out of the way of another Sometimes the term is extended to cover cases in which the king moves out of check and reveals a discovered check from another piece (this is also known as a royal check); it does not generally apply to cases where the original checking piece is captured. In Chess, the King (♔ ♚ is the most important piece. The object of the game is to trap the opponent's king so that it would not be able to avoid capture In Chess, a discovered attack is an attack revealed when one piece moves out of the way of another

Botvinnik vs. Minev game

Botvinnik-Minev, 1954

Black, to move, resigned. Black dots are where the black queen can check; white dots are where the white queen can cross-check in reply.

Cross-checks are rare in actual play, though they do occur, and in some endgames, particularly queen endgames, they are very important. In Chess, the endgame (or end game or ending) refers to the stage of the game when there are few pieces left on the board The queen (♕♛ is the most powerful piece in the game of Chess. The position shown to the is the final position in the famous queen endgame from the game ^[1] between Mikhail Botvinnik and Nikolay Minev, Amsterdam Olympiad, 1954. Mikhail Moiseyevich Botvinnik (mʲixaˈiɫ̺ mʌiˈs̺ʲɛjɛvʲiʧʲ bʌt̺ˈvʲin̺n̻ʲik Михаи́л Моисе́евич Ботви́нник) ( &ndash May Nikolay (or Nikolai Nikolaev Minev was born in Rousse, Bulgaria, on 8 November 1931 In the position shown, after 91. Kc5!!, Black resigned because the promising looking checks 91. This page explains commonly used terms in Chess in alphabetical order . . Qc7+, 91. . . Qg1+, 91. . . Qf2+ and 91. . . Qc2+ are answered by the cross-checks 92. Qc6+, 92. Qd4+, 92. Qd4+ and 92. Qc4+ respectively, forcing an exchange of queens in all cases, which will result in the promotion of the pawn and winning the game by a basic checkmate. Promotion to various pieces Promotion to a queen is the most common in practical play since the queen is the most powerful piece The pawn (♙♟ is the weakest and most numerous piece in the Game of Chess, representing Infantry Checkmate (frequently shortened to mate) is a situation in Chess (and in other Boardgames of the Chaturanga family in which one player's This is an important theme in queen endgames: the weaker side often gives a series of checks, and it is frequently important for them to avoid simplifying cross-checks such as these in reply (Burgess 2000:102-3, 458-59), (Golombek 1977). This article is about a type of move in Chess. Cross checking is also a penalty in ice hockey This article is about a type of move in Chess. Cross checking is also a penalty in ice hockey If the black queen attacks the pawn instead of checking it does no good since the promotion square of the pawn is protected by its queen.

Two queens versus one

Botvinnik-Ravinsky, 1944

Black resigned after 126. Qf4+.

Possible continuation

Cross-check with 135. Qee8+ wins.

In the position on the left from Botvinnik-Ravinsky ^[2], Black resigned. With best play according to the endgame tablebase, 126. An endgame tablebase is a computerized Database of all Chess positions within certain endgames The tablebase reveals the game-theoretical value . . Kb3 127. Qf7+ Ka4 128. q8=Q Qg4+ 129. Kh6 Qh4+ 130. Kg7 Qg3+ 131. Kf8 Qd6+ 132. Qe7 Qh6+ 133. Qgg7 Qf4+ 134. Qgf7 Qb8+ and the position on the right is reached. Then the cross-check 135. Qee8+ (or Qfe8+) forks the king and queen, forces an exchange, and wins the game. In Chess, a fork is a tactic that uses one piece to attack two or more of the opponent's pieces at the same time hoping to achieve material gain (by capturing

Anderson problem, 1919

G. F. Anderson, 1919

Cross-checks are relatively infrequent in actual play, but are popular in chess problems since they make for a relatively unobvious solution. A chess problem, also called a chess composition, is a puzzle set by somebody using Chess pieces on a Chess board that presents the solver with In the problem shown to the right, white is to move and mate in two moves against any defence. It is by G. F. Anderson and was first published in Il Secolo in 1919. The key 1. This is a list of terms used in Chess problems. For a list of unorthodox pieces used in chess problems see Fairy chess piece. Kd6, threatening 2. Qb7#, gives the black king two flight squares, and two of the variations exploit these: 1. In Chess, a flight square or escape square is a safe place or a square to which a King can move if it is threatened . . Kb6 2. Bc2# and 1. . . Kb4 2. Kxc6#. The other two defences exploit the fact that the key exposes the white king to checks, and are answered by cross-checks: 1. . . Rg6+ 2. Be6# and 1. . . Rd3+ 2. Bd5#.

Anderson problem, 1961

G. F. Anderson, The Observer, 1961

The problem to the right, also by G. The Observer is a British Newspaper published on Sundays In about the same place on the political spectrum as its daily sister paper The Year 1961 ( MCMLXI) was a Common year starting on Sunday (link will display full calendar of the Gregorian calendar. F. Anderson (first published in The Observer in 1961) and also a mate in two, features no less than five cross-checks. The Observer is a British Newspaper published on Sundays In about the same place on the political spectrum as its daily sister paper The The key is 1. Qb6 (threat: 2. Ne4#), with the following variations:

1. . . exf6+ 2. Nb7#

1. . . exd6+ 2. Nd7#

1. . . Nd4+ 2. Rf5#

1. . . Nxd6+ 2. Nd3#

1. . . Nf-other+ 2. Ne4#

1. . . Kxf6 2. Qb2#

1. . . Kxd6 2. Rd4#

Notes

References

• Burgess, Graham (2000), The Mammoth Book of Chess, Carroll & Graf Publishers, ISBN 0-7867-0725-9 
• Golombek, Harry (1977), Golombek's Encyclopedia of Chess, Crown Publishing, ISBN 0-517-53146-1 
• Hooper, David & Whyld, Kenneth (1992), The Oxford Companion to Chess (second ed. Graham K Burgess (born 1968 is an English FIDE Master of Chess and a noted writer and trainer Harry Golombek OBE ( March 1[[ 911]]– January 7 1995) was a British Chess International Master and honorary grandmaster David Vincent Hooper ( 31 August 1915 - May 1998 born in Reigate, was a British Chess player and writer Kenneth Whyld ( March 6, 1926 - July 11, 2003) was a British Chess author and researcher best known as the co-author (with The Oxford Companion to Chess is a reference Book on Chess written by David Hooper and Kenneth Whyld. ), Oxford University Press, ISBN 0-19-280049-3 

Further reading

• John Rice, Chess Wizardry: The New ABC of Chess Problems (London, Batsford, 1996)

External links

• C.G.S. Narayanan on cross-checks