In chess, a decoy is a tactic that lures an enemy man off its square and away from its defensive role.[1] Typically this means away from a square on which it defends another piece or threat. The tactic is also called a deflection. Usually the piece is decoyed to a particular square via the sacrifice of a piece on that square. A piece so sacrificed is called a decoy. When the piece decoyed or deflected is the king, the tactic is known as attraction. In general in the middlegame, the sacrifice of a decoy piece is called a diversionary sacrifice.[2]
Finally, a zwischenzug decoys (attracts) the king to b2:
4... Bxb2+
After either 5.Kxb2 Nxc4+ 6.Kc3 Rxe4, or 5.Kd1 Nxc4, Black is two pawns ahead and should win comfortably.
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Example of attraction
In this position, after the moves 1.Rf8+ Kxf8 (forced) 2.Nd7+ Ke7 3.Nxb6, White wins the queen and the game. A similar, but more complex position is described by Huczek.[3]
Vidmar vs. Euwe, 1929
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Position after 33...Qf4
In the diagrammed position from Vidmar–Euwe, Carlsbad 1929, Black had just played 33...Qf4, threatening mate on h2. White now uncorks the elegant combination 34.Re8+ Bf8 (forced) 35.Rxf8+ (attraction) Kxf8 (forced) 36.Nf5+ (discovered check) Kg8 (36...Ke8 37.Qe7#) 37.Qf8+ (attraction) 1–0 Black resigns. (If 37...Kxf8 then 38.Rd8#. If 37...Kh7 then 38.Qg7#.) The combination after 33...Qf4 features two separate examples of the attraction motif.[4]
Dementiev vs. Dzindzichashvili, 1972
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Position after 61.g6
This example shows a position from the game Dementiev–Dzindzichashvili, URS 1972. White had just played 61.g6 (with the threat 62.Qh7+ Kf8 63.Rxf5+). However, Black continued with the crushing 61...Rh1+ (attraction) 62. Kxh1 (best) Nxg3+ (the white rook is pinned) 63.Kh2 Nxh5 and White has dropped his queen to the knight fork. In the game, White resigned after 61...Rh1+.[5]
Petrosian vs. Pachman, 1961
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Position after 18...Rd8
Perhaps the most celebrated game featuring a decoy theme is Petrosian–Pachman, Bled 1961,[6] which also involved a queen sacrifice. Pachman resigned after 19.Qxf6+ (attraction) Kxf6 20.Be5+ Kg5 21.Bg7! setting a mating net.
Menchik vs. Graf, 1937
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Position after 20...Ng4
In the game Menchik–Graf, Semmering 1937,[7] Graf resigned after 21.Rd7, deflecting Black's queen. (If 21...Qxd7, then 22.Qxh5 with mate to follow; 21.Qxh5 immediately wins only a pawn after 21...Qxh2+.)[2]
Ivkov vs. Taimanov, 1956
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Final position after 49.h6
Often a wing pawn serves as a decoy in endgames.[8] In the game Ivkov–Taimanov, Belgrade 1956,[9][10] Black resigned in the position shown because White has an easy win by using his passed a2-pawn as a decoy to lure Black's king away from the center and to the queenside, allowing easy promotion of the h6-pawn.
decoy, chess, other, uses, decoy, disambiguation, chess, decoy, tactic, that, lures, enemy, square, away, from, defensive, role, typically, this, means, away, from, square, which, defends, another, piece, threat, tactic, also, called, deflection, usually, piec. For other uses see Decoy disambiguation In chess a decoy is a tactic that lures an enemy man off its square and away from its defensive role 1 Typically this means away from a square on which it defends another piece or threat The tactic is also called a deflection Usually the piece is decoyed to a particular square via the sacrifice of a piece on that square A piece so sacrificed is called a decoy When the piece decoyed or deflected is the king the tactic is known as attraction In general in the middlegame the sacrifice of a decoy piece is called a diversionary sacrifice 2 Contents 1 Examples 2 See also 3 ReferencesThis article uses algebraic notation to describe chess moves Examples editHonfi vs Barczay 1977abcdefgh8 nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp 877665544332211abcdefghBlack to move The game Honfi Barczay Kecskemet 1977 with Black to play illustrates two separate decoys First the white queen is set up on c4 for a knight fork 1 Rxc4 2 Qxc4 Next the fork is executed by removing the sole defender of the a3 square 2 Qxb2 3 Rxb2 Na3 4 Kc1 Finally a zwischenzug decoys attracts the king to b2 4 Bxb2 After either 5 Kxb2 Nxc4 6 Kc3 Rxe4 or 5 Kd1 Nxc4 Black is two pawns ahead and should win comfortably abcdefgh8 nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp 877665544332211abcdefghExample of attraction In this position after the moves 1 Rf8 Kxf8 forced 2 Nd7 Ke7 3 Nxb6 White wins the queen and the game A similar but more complex position is described by Huczek 3 Vidmar vs Euwe 1929abcdefgh8 nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp 877665544332211abcdefghPosition after 33 Qf4 In the diagrammed position from Vidmar Euwe Carlsbad 1929 Black had just played 33 Qf4 threatening mate on h2 White now uncorks the elegant combination 34 Re8 Bf8 forced 35 Rxf8 attraction Kxf8 forced 36 Nf5 discovered check Kg8 36 Ke8 37 Qe7 37 Qf8 attraction 1 0 Black resigns If 37 Kxf8 then 38 Rd8 If 37 Kh7 then 38 Qg7 The combination after 33 Qf4 features two separate examples of the attraction motif 4 Dementiev vs Dzindzichashvili 1972abcdefgh8 nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp 877665544332211abcdefghPosition after 61 g6 This example shows a position from the game Dementiev Dzindzichashvili URS 1972 White had just played 61 g6 with the threat 62 Qh7 Kf8 63 Rxf5 However Black continued with the crushing 61 Rh1 attraction 62 Kxh1 best Nxg3 the white rook is pinned 63 Kh2 Nxh5 and White has dropped his queen to the knight fork In the game White resigned after 61 Rh1 5 Petrosian vs Pachman 1961abcdefgh8 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 18 Rd8 Perhaps the most celebrated game featuring a decoy theme is Petrosian Pachman Bled 1961 6 which also involved a queen sacrifice Pachman resigned after 19 Qxf6 attraction Kxf6 20 Be5 Kg5 21 Bg7 setting a mating net Menchik vs Graf 1937abcdefgh8 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 20 Ng4 In the game Menchik Graf Semmering 1937 7 Graf resigned after 21 Rd7 deflecting Black s queen If 21 Qxd7 then 22 Qxh5 with mate to follow 21 Qxh5 immediately wins only a pawn after 21 Qxh2 2 Ivkov vs Taimanov 1956abcdefgh8 nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp nbsp 877665544332211abcdefghFinal position after 49 h6 Often a wing pawn serves as a decoy in endgames 8 In the game Ivkov Taimanov Belgrade 1956 9 10 Black resigned in the position shown because White has an easy win by using his passed a2 pawn as a decoy to lure Black s king away from the center and to the queenside allowing easy promotion of the h6 pawn See also editOverloadingReferences edit Hooper amp Whyld 1996 pp 102 03 decoy a b Hooper amp Whyld 1996 p 110 diversionary sacrifice George Huczek 2017 A to Z Chess Tactics Batsford pp 1 349 ISBN 978 1 8499 4446 5 Master Games Chess com Retrieved 2021 01 25 Master Games Chess com Retrieved 2021 02 02 Petrosian vs Pachman Bled 1961 Chessgames com Vera Menchik vs Sonja Graf Stevenson Semmering 1937 Chessgames com Hooper amp Whyld 1996 p 103 Hooper amp Whyld 1996 p 184 Ivkov Ivkov vs Taimanov Yugoslavia USSR match 1956 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 Retrieved from https en wikipedia org w index php title Decoy chess amp oldid 1165801797, wikipedia, wiki, book, books, library,
