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9 Ww-), uuiy 2/, I * JShelby Lyman an ChessTHE HERALDtKorchnoi gave up a piece without hurtingcheck. WherWhen Victor Korchnoi sacrificed a of Q-N2 as hepiece in his winning game against Robert White wins wiByrne at Leningrad (as shown in last ever black goes with the king, his queenweek's column), he had to foresee a will fall to a knight fork or RxQ.number of possible side variations aswell as the six concluding moves that occurred in the actual game. Our third(Diagram 1)BLACKlit rrii**b Nb(Diagram 2)BLACKB % rnr(Diagram 3)Our third position shows the final posiFor Korchnoi, one of the world's best ^on °* the actual game. Here Byrne retactical players, such a feat is not too demanding, especially in the game under v Consideration, in which there were a limited number of plausible possibilities.m(Diagram 1)m-- In the first diagram we see a positionthat could have occurred if Byrne hadplayed Q-N2 on his 23rd move.*This difference would have eliminated 23. . .Q-K2 and 24. B-B5 as played in the actualKorchnoi would not only have been two pawns ahead after 29. NxB, NxN; 30. RxN, but the threats of Q-Q4 check (orQ-B3 check) followed bv mate or Q-R7beenfense.(Diagram 4)QR QN QB Q K KB KN KRknu lurni% HITEpositiongame. Korchnoi could the diagrammed positionknightqueen, bishopHow would Korchnoi hove regomed htfpiece in this hypotheticol position?the variations above. After 1). . .Q-N5QxB allows a knight fork and Q-K2 al- check; 2) K-Ql, B-Q6low’s BxB, as in the game.(Diagram 2)the queen. (If 3) QxB, NxP check.)(Diagram 31BLACK11% i nr*b Nbpositions to hisexperiencepositionthematicwould have happened if Byrne had re- t,tnS. °f al* k!n,ds wil1 make U easier (orspondedyou to calculate variations in your owngame.• • i • • . *♦ * v * *» . .•«*LYMANISMiIt’seasier to resignKing’s Indian DefenseKorchnoiBvrne(White)(Black)11. P-Q4N-KB3:2. P-QB4P-KN3*3. N-QB3♦B-N24. P-K4P-Q3.5. N-B30-0I 6. B-K2P-K4'7. 0-0N-B3•8. P-Q5N-K29. B-Q2P-B4JO. PxP e.p.PxPJl. B-KN5B-K312. P-B5N-Kl43. PxPNxQPJ4. Q-R4P-B315. B-K3Q-B216. QR-B1KR-N1J7. KR-Q1B-KBl48. R-Q2KN-BlJ9. N-Q5Q-B220. QxBPNxKP21. NxP checkNxN22. N-N5B-Q223. Q-R6Q-K224. B-B5Q-N225. Q-B4 checkK-Rl26. N-B7 checkK-Nl27. NxP checkK-Rl28. BxBResignswrhen you’re blatantly lost than it is to suggest a draw to your opponent in an even position.Copyright 1972 by Shelby Lyman Questions? Address Shelby Lyman on chess, P.O. Box 280, Arlington Heights, 111. 60006.QR QN QBKB KN KRkora'tllMliWHITEWhy did Byrne resign?Woodfield, SchaumburgQR QN QB Q K KB KN KRknrrhimiW HITKHow does Korchnoi win block's queen in this second hypothetical position?(Diagram 4)BLACKKlik.lt 1114QR QN QB Q K KB KN KR1 mint.inU HITEHow does white win black’s queen?Monday through Friday
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Des Plaines Herald
Des Plaines, Illinois, US
Fri, Jul 27, 1973
Page 22
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