Tuesday, September 25, 2007

Anthology piece

In the game Tukmakov-Panno, Buenos Aires 1970, the Ukrainian GM executed an impressive final combination that has deservedly found its way into the anthology books. But equally impressive was the play leading up to the combination.

In the first diagram Black has just played 11...Na5 with the obvious intention of disturbing White's pieces with 12...Nc4. Tukmakov takes immediate action to prevent Black's plan, simultaneously aiming his queen at Black's kingside:
12.Qd3! Bd7 13.g4 Kh8?!
A passive defensive regrouping that does not properly address the vulnerability of the square h7. Both 13...Rac8 and 13...d5 were more in the spirit of things.
14.g5 Ng8 15.Rf3 Nc6 16.Rg1!
I like the way Tukmakov is bringing all of his pieces into play before going over to direct attack.
16...Nxd4 17.Bxd4 f5?!
In Informant 10 GM Aleksandr Matanovic suggests 17...Bc6!? without further analysis. But as in the game White carries on with 18.Rh3! and it is difficult to see a good defence for Black.
18.Rh3 e5 19.Nd5 Qd8 20.fxe5!
White had to foresee that Black's next move would not get him out of trouble.
This brings us to the second diagram, the one that is in the puzzle books. It's White to play and win!
According to the game score as published in Informant 10, Panno saw what was coming and resigned here. It wouldn't surprise me if this were the case, but according to the tournament bulletin some further moves were played:
21...exd3 22.Bxd3 h6
In Informant 10 Matanovic gives 22...Nf6 23.gxf6 Bxf6 24.Rxh7+ Kg8 25.Nxf6 and wins; or 21...Be6 22.Rxh7+ Kxh7 23.Qxe4+ Bf5 24.Qh4+ Nh6 25.Nxe7 and wins. In the Encyclopaedia of Chess Middlegames, 21...Be6 is refuted more simply by 22.Bxg7+ Kxg7 23.Qd4+, when Black must interpose his rook to avoid mate. That costs him his queen after 23...Rf6 24.gxf6+.
23.gxh6 Nxh6
Or 23...Nf6 24.hxg7+ Kg8 25.Rh8 mate.
24.Rxh6+ Kg8 25.Rxg7 mate 1-0

1 comment:

James Chan said...

This is a really cool combination it took me a good 30 seconds to gather my thoughts and appreciate that Bd3 was the right recapture after pawn takes. The double bishop and double rook battery like Karsten Muller likes to say is simply "Dominating"

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National master (Canada) since 1984. B.C. Champion 1977 and 1984. Runner-up 1991 and 2002. B.C. Open Champion 1972 and 1982. B.C. U/14 Champion 1964-65-66. Mikhail Botvinnik once wrote that publishing your analytical work forces you to be accurate because it exposes you to criticism. Hence this blog.