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Shelby Lyman: On ChessSinewChessPins constitute a substantial share of the sinew and bones of chess games. They come and go, as it were. But sometimes they are more easily made than broken.When a pin looks decisive, it may indeed be decisive. Like the wrestling tactic of the same name, it will spell “finis.”In the 1948 WorldChampionship Tournament, champion-to-be Michael Botvinnik (white) was nevertheless losing the following game to Sammy Reshevsky (see DiagramOne).BLACKRESHEVSKYgame soon ended.In the April Lone Pine Tournament (1975), too, there were a number of notable pins.BLACKTHORNALLYbo no ao O X 9* NX 9XQR QN QBKB KN KRTARJANWHITEWhite to moveOne of these occurred in the game Tarjan-Thornally. (Diagram Two shows the decisive position.) White is a pawn ahead and has an effective pin of the black rook on the KN3-Q3diagonal.BLACKROHDEdO NO 90 O X 9X NX dX86531QR QN QB QKB KN KRGREFEWHITEBlack has a smash!He played 1. . . P-N4!! and after 2. PxP, N-B5!; 3. PxN, PxP! the white bishop is not only under attack but also shut out from the crucialKN5The blacksquare, knight will land there with a vengeance, and the additional attack on the white knight will cause a blow-out of the white position.The game proceeded, 4. B-B5, NxP; 5. R-Q3, KR-Ql; 6.QR-Ql and Rhode regained material to spare with 6. . . NxN check; 7. RxN, BxN, etc.A sudden and elegant finish.WAtNIR*p*UTN“Poor white must moveThere are two pins in effect here and two consequent jumbles of white pieces (along the queen file and along black’s QR3-KB8 diagonal).Botvinnik, who is running out of moves, fatalistically played 1. K-Kl (removing a vital protector of the pinned bishop). This move instantly lost material to Reshevsky’s 1. . . N-N6 (either the rook or bishop will fall) and theThe simple 1. R(7)-R5 was decisive. The liquidation of the black rook will mean the win of another pawn. Thornally resigned, the pin pile-up having put an end tothe contest.Perhaps the finest and most original exploitation of the pin idea in a very long time occurred in the game Grefe-Rhode. Here (Diagram Three) the 15-year-old Rhode beautifully surprised his famous U.S. champion opponent.AAAT ITSWE HAVE THE LARGEST SELECTION IN THE AREATEL 793-5661QUAKER ROAD, GLENS FALLSv-A/#• *9*Trr7dlla • • *• • 4• *« t*mmI__*•-BOTVINNIKWHITEBLACKROHDEGREFEWHITEHe must win material
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Glens Falls Post Star
Glens Falls, New York, US
Sat, Jul 26, 1975
Page 26
Full Page
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Los A.
CA, USA 03 Jan 2023
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