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Duncan Suttles vs Anatoly Karpov
San Antonio (1972), San Antonio, TX USA, rd 5, Nov-24
Hungarian Opening: Sicilian Invitation (A00)  ·  0-1
ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
Dec-15-05  Jenspooch: Needlessly dragged out by Suttles.
He was decisively whipped after
25...Nxe4.
Feb-17-07  lentil: I disagree, Pooch. W had the strongly posted N and B had a bad bishop. I think W's error was opening up the position with 45. ..b4. I think he should have stayed turtle.
Oct-13-09  birthtimes: After 22. Rxf5, Mednis writes, "There is no other way of saving the d-pawn; yet neither is this sacrifice adequate. White already is lost."

How Karpov Wins, 1994, p. 140.

Oct-13-09  birthtimes: After 44...Kg6, "Black's winning procedure will consist of placing his king on e6, his bishop on d8, and then breaking on the queenside via a6 and b5. White can do nothing to defend against the above plan."

ibid., p. 141.

Jan-16-10  Rama: What about 24. Bxg5 hxg5, 25. Qxg5 ..., with prospects of regaining the material?
May-13-10  muwatalli: rama, interesting line, while checking i was going to give qf7 as defending with the following lines 25... qf7 26 g4 nh6 27 ng3 rd6 ( if 28 rf1 rf6) 28. nh5 re6 with qe7 threatened and an easy defense

25... qf7 26 rf1 qe7 27 qh5+ nh6 28 rxf8+ qxf8(if 28 qg6? rxf1+ 29 kg2 Rf5!) 29 qg6 qg8 and defends(30 nc3 re8 31 nd5 re6)

but what i didn't notice was the simpler 25... qf7 26 rf1 where qe7 the only move fails to the fairly simple 26... qe7 27 rxf5 when black has nothing better to exchange queens into an endgame where black has 2 pawns for the exchange and though he may be better after 27... qxg5 28 rxg5 rf1+ 29.kg2 ra1 it certainly isn't best so rather than that i looked at -

25 ... qe7 meets 26 qh5+ nh6 27 qg6+ kg8 qh7+ kf7 Qg6+ kg8 with perpetual.

any N move other than nh6 meets qh5+ with at least perpetual.

and finally 25... nh6 meets with26 qg6 and after kg8 27 qh7+ kf7 28 rf1+ black looks losing

so the only winning move i could find for black was 25... Bh6! where white's queen only has 3 squares if 26. qg4 ne3 and if 26. qh5 qf7 and if 26 qg6 rd6 where qh5 is once again met by qf7 and qg4 is once again met by ne3.

Jul-17-15
Premium Chessgames Member
  thegoodanarchist: Was Suttles inspired to play an exchange sacrifice due to the presence of Tigran Petrosian in the tournament? Did he want to catch the eye of the former WC?

If so, it was a mistake - he obtained no compensation for the exchange.

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