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Viktor Korchnoi vs Florin Gheorghiu
Sao Paulo (1979), Sao Paulo BRA, Feb-??
English Opening: Symmetrical Variation. Hedgehog Defense (A30)  ·  1/2-1/2
ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
Apr-05-07  Ulhumbrus: Stean, in his column in the Observer magazine, describes Korchnoi's combination made from the ingredients 11 Bxf6 12 Na4 and 13 c5!! as an original and brutal attack against the Hedgehog formation. Korchnoi's mistake is to play 15 Qe5? in a position where Gheorghiu has made an important change to the position by the capture 13...Bxf3: he has discovered a defence upon b6 so that White can no longer answer ...Qc8 by Nxb6. Instead of 15 Qe5, 15 Bc6+! Kf8 16 Qf4! Qc8 17 e4 may lead to a winning attack. Korchnoi makes the mistake of playing an attacking move which has been a threat before, but which is no longer the best move after Gheorghiu has made a change to the position, and so Gheorghiu saves the game in the end. One lesson is that if the defending player makes a change in the position so as to answer a threatened attack, the attacker must change his attack.
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98_H00_Hedgehog-Formation
by whiteshark


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