Lawrence Day vs Jean-Luc Costa (1992)

Lawrence Day vs Jean-Luc Costa
Manila olm 1992 · King's Gambit: Declined. Classical Variation Rubinstein Countergambit (C30) · 0-1

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Oct-20-04		cu8sfan: This game is analyzed in GM Neil McDonald's book "The King's Gambit". <IMlday> Can you tell me something about it? When did you feel like you had lost the plot? Were you considering 15.xc7 over 15.xc7 as advised by McDonald? Thanks for your input!

Oct-20-04		IMlday: I was seeing fuzzy throughout this 1992 Manila Olympiad for a simple reason~~my eyesight had deteriorated and my old glasses prescription needed updating. Everything was fuzzy; not just chess! Nevertheless I obtained an overwhelming position early against this dubious but tricky KGD variation. With GM Korchnoy possibly 'booking' him for the Swiss team, I figured to avoid the old main lines. 15.Nxc7 is winning but I thought 15.Rxc7 was even better. After 19.Bc4 I expected resignation; or after 19..Nc5 20.Qb4 with the Black Queen as well as the newly pinned N in the soup. I simply overlooked Black's anomalous defensive resource 20..Kd8!! which is worthy of a study theme. If I take his Queen he gets mine with Nd3+; if I take his Knight with Qxc5 he gets mine with ..Qxc7. Alexander Kotov, in "Think Like a Grandmaster" categorized such errors as 15.Rxc7? as 'Dizziness Due to Success'~~easy to lose concentration when many moves appear to lead to victory.

Oct-20-04		clocked: 15.Rxc7 (? if WAY too harsh, if not completely wrong) The blunder was 20.Qb4? allowing the forking resource. 20.Qb5 an white is still better. Also, 18.Qd4! justifies 15.Rxc7!

Oct-20-04		cu8sfan: Thanks for your explanations, <IMlday>! "Dizziness Due to Success" reminds me of the quote that the hardest games to win are those that you've already won, something like that. I think it's by Tartakower. McDonald gives 20.b5! instead of 20.b4? as a winning move and analyzes "20....xc7 21.xf7 xf7 22.xg6 hxg6 23.c4+ g7 24.d4 etc." About your eyesight: Do you think that concentrating hard on a chessboard for hours, months and years has something to do with it? I wonder if there exist any medical studies.

Oct-20-04		IMlday: Certainly 20.Qb5! was much better. After 20..Rxc7 there are a few technical problems remaining but winning would still be normal. I was impatient, and to be honest, a bit bored after easily refuting his prepared variation. I played 15.Rxc7 too quickly even if it was sound. I hadn't searched for hidden defensive resources. Most any GM would probably have collected the point without difficulty. A weird game, as instructive psychologically as tactically!

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