In chess, a fork is a tactic in which a piece attacks multiple enemy pieces simultaneously. The attacker usually aims to capture one of the forked pieces. The defender often cannot counter every threat. A fork is most effective when it is forcing, such as when the king is put in check. A fork is a type of double attack.
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The white knight forks Black's king and rook. Black's pawn forks the white rooks.
A fork is an example of a double attack. The type of fork is named after the type of forking piece. For example, a fork by a knight is a knight fork. The attacked pieces are forked.[1] If the king is one of the attacked pieces, the term absolute fork is sometimes used. A fork not involving the enemy king is a relative fork.[2]
A fork of the king and queen, the highest material-gaining fork possible, is sometimes called a royal fork. A fork of the enemy king, queen, and one (or both) rooks is sometimes called a grand fork. A knight fork of the enemy king, queen, and possibly other pieces is sometimes called a family fork or family check.[3]
Strategyedit
Any piece can deliver a fork. Forks are most often delivered by knights: a knight is not attacked by a piece it attacks except for an enemy knight, and it can be exchanged for a more valuable piece.[4][5]
Since the queen is usually more valuable than the pieces it attacks, a queen fork gains material only when the pieces attacked are undefended or if one of them is the king and the other is undefended.
White resigned. In the final position the black knight forks White's queen and rook; after the queen moves away, Black will win the exchange.
Soppe vs. Braga, 1998
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Position after 40.Nxe5
This example is from the ninth round of the Clarin GP Final between Guillermo Soppe and Fernando Braga.[7] After
40... Qh1+
White resigned. The only move is 41.Ke2 which enables a royal fork with 41...Nc3+, winning the queen.
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Position after 4.Nc3. Black can play 4...Nxe4 since he has a fork trick.
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After 4...Nxe4 5.Nxe4 d5, White is forked and Black will regain a piece.
In the Two Knights Defense (1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6) after 4.Nc3, Black can eliminate White's e4-pawn immediately with 4... Nxe4?!, the Ponziani-Steinitz Gambit due to the fork
5. Nxe4 d5
regaining either the bishop or the knight. However, this tactic is easily refuted with 5. Bxf7+! Ke7 6.d4!. If black tries to take back the bishop, their queen is lost via the skewerBxg5+.
fork, chess, chess, fork, tactic, which, piece, attacks, multiple, enemy, pieces, simultaneously, attacker, usually, aims, capture, forked, pieces, defender, often, cannot, counter, every, threat, fork, most, effective, when, forcing, such, when, king, check, . In chess a fork is a tactic in which a piece attacks multiple enemy pieces simultaneously The attacker usually aims to capture one of the forked pieces The defender often cannot counter every threat A fork is most effective when it is forcing such as when the king is put in check A fork is a type of double attack abcdefgh8877665544332211abcdefghThe white knight forks Black s king and rook Black s pawn forks the white rooks Contents 1 Terminology 2 Strategy 3 Game examples 4 References 5 Further readingThis article uses algebraic notation to describe chess moves Terminology editA fork is an example of a double attack The type of fork is named after the type of forking piece For example a fork by a knight is a knight fork The attacked pieces are forked 1 If the king is one of the attacked pieces the term absolute fork is sometimes used A fork not involving the enemy king is a relative fork 2 A fork of the king and queen the highest material gaining fork possible is sometimes called a royal fork A fork of the enemy king queen and one or both rooks is sometimes called a grand fork A knight fork of the enemy king queen and possibly other pieces is sometimes called a family fork or family check 3 Strategy editAny piece can deliver a fork Forks are most often delivered by knights a knight is not attacked by a piece it attacks except for an enemy knight and it can be exchanged for a more valuable piece 4 5 Since the queen is usually more valuable than the pieces it attacks a queen fork gains material only when the pieces attacked are undefended or if one of them is the king and the other is undefended Game examples editTissir vs Dreev 2004abcdefgh8 nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp 877665544332211abcdefghPosition after 33 Qe5 f4This example is from the first round of the FIDE World Chess Championship 2004 between Mohamed Tissir and Alexey Dreev 6 After 33 Nf2 34 Kg1 Nd3White resigned In the final position the black knight forks White s queen and rook after the queen moves away Black will win the exchange Soppe vs Braga 1998abcdefgh8 nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp 877665544332211abcdefghPosition after 40 Nxe5This example is from the ninth round of the Clarin GP Final between Guillermo Soppe and Fernando Braga 7 After 40 Qh1 White resigned The only move is 41 Ke2 which enables a royal fork with 41 Nc3 winning the queen abcdefgh8 nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp 877665544332211abcdefghPosition after 4 Nc3 Black can play 4 Nxe4 since he has a fork trick abcdefgh8 nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp 877665544332211abcdefghAfter 4 Nxe4 5 Nxe4 d5 White is forked and Black will regain a piece In the Two Knights Defense 1 e4 e5 2 Nf3 Nc6 3 Bc4 Nf6 after 4 Nc3 Black can eliminate White s e4 pawn immediately with 4 Nxe4 the Ponziani Steinitz Gambit due to the fork 5 Nxe4 d5regaining either the bishop or the knight However this tactic is easily refuted with 5 Bxf7 Ke7 6 d4 If black tries to take back the bishop their queen is lost via the skewer Bxg5 References edit The Fork lichess org lichess org Retrieved 2021 04 09 Chess Game Strategies Next Chess Move Chess Game Strategies Hooper amp Whyld 1996 p 132 family check Fork in Chess Chess Terms Chess com Retrieved 2021 04 09 Hooper amp Whyld 1996 p 143 fork Tissir vs Dreev Tripoli 2004 Chessgames com Guillermo Soppe vs Fernando Braga 1998 Chessgames com Bibliography Hooper David Whyld Kenneth 1996 First pub 1992 The Oxford Companion to Chess 2nd ed Oxford University Press ISBN 0 19 280049 3 Further reading editBurgess Graham 2009 The Mammoth Book of Chess 3rd ed Running Press ISBN 978 0 7624 3726 9 Golombek Harry 1977 Golombek s Encyclopedia of Chess Crown Publishing ISBN 0 517 53146 1 Retrieved from https en wikipedia org w index php title Fork chess amp oldid 1185816266, wikipedia, wiki, book, books, library,
