Thursday 20 July 2023

European Senior Team (65+) Round Nine

Mira Kierzek (Germany Women - 1937) - Spanton (England 3 - 1800)
English Symmetrical
1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 d6 6.0-0 e5 7.d3 Nge7
How should White continue?
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8.Bg5!?
There are four more-popular moves in ChessBase's 2023 Mega database, especially 8.a3, but the text is marginally preferred by Stockfish16.
8...0-0 9.h3 h6 10.Bd2
Interesting is 10.Bxe7, the idea being to take control of d5.
10...Kh7 11.Kh2 Be6 12.Ne4?!
How should Black respond?
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12...Qd7
Not 12...f5? 13.Neg5+! etc. Nevertheless White's 12th move is dubious as, provided Black avoids the trap, the knight is wasting time and encouraging Black to expand on the kingside.
13.e3 f5 14.Nc3 d5
Even stronger may be the engines' 14...e4!? 15.dxe4 fxe4 16.Nxe4 Bxc4.
15.cxd5 Nxd5 16.Nxd5 Bxd5 17.Bc3 Rad8 18.Qa4
What should Black play?
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18...Bxf3!?
Other moves also preserve Black's advantage, but the text brings favourable simplification.
19.Bxf3 Nd4 20.Qd1
Not 20.Qxd7? Nxf3+ 21.Kg2 Rxd7 22.Kxf3 Rxd3.
20...Nxf3+ 21.Qxf3 Qd5 22.Qd1 b5!
The engines agree this is better than 22...Qxd3, after which White gets counterplay with 23.Qa4 or 23.Qb3.
23.Ba5 Rd6 24.Qc2 Ra6
The engines reckon even stronger are 24...b4 and 24...f4!?
25.b4!? Rc6?!
The engines much prefer 25...f4!?
26.Rac1?!
White more-or-less equalises with 26.bxc5, according to the engines.
26...Rfc8 27.Qe2 c4 28.dxc4 Rxc4 29.Rcd1 Qc6 30.Rd2
How should Black proceed?
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30...Rc1?!
This allows comfortable equality. Black is still better after 30...f4!? or 30...Rf8, according to the engines.
31.Rfd1 Rc2 32.Qd3 Qc4 33.Qd7!?
Simpler is 33.Qxc4 or even 33.Qxc2!?, eg 33.Qxc2!? Qxc2 34.Rxc2 Rxc2 35.Kg2 Rxa2 36.Rd7.
33...Qxa2 34.Bd8!?
Suddenly the black king is in danger.
How should Black reply?
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34...Kg8?
The game is completely equal after 34...Qc4 or 34...R8c6, according to the engines.
White to play and win
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35.Qe8+
Not 35.Qxc8 as after 35...Rxd2 White does not have a good discovery-move with the bishop, but the engines point out 35.Bf6! After 35...Bxf6 White wins with 36.Qxc8+, and after 35...Qf7 White has 36.Qxf7+ Kxf7 37.Rd7+ Kxf6 38.R1d6+ Kg5 39.Rxg7, eg 39...f4 40.exf4+ Kf5 41.Rf7+ Ke4 42.fxe5 Kxe5 43.Rxg6 with a large advantage. If in this latter line Black tries 40...exf4? then 41.Rgxg6+ Kf5 42.g4+ Ke4 43,Kg2 is even more convincing.
35...Kh7 36.Qd7 Qc4 37.h4!? f4!? 38.exf4 exf4 39.h5?!
The engines reckon 39.Rxc2 Qxc2 40.Rd2 fxg3+ 41.fxg3 is equal.
39...fxg3+ 40.fxg3
Black to play and lose
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40...Qg4?? 0-1
That was the right idea, but the wrong execution. With 40...Qe4 41.hxg6+ Black is at least slightly better, according to the engines, after both 41...Qxg6 and 41...Kxg6!?
FULL TEAM RESULT
Germany Women v England 3
Brigitte Burchardt (2142) 1-0 Richard Freeman (1987)
Annett Wagner-Michel (2078) 1-0 David Tucker (1898)
Mira Kierzek (1937) 1-0 Tim Spanton (1800)
Liubov Orlova (1990) = Robert Kane (1723)
................................3.5-05.............................

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