Wednesday, 15 November 2023

Cap Negret Round Five

One of a series of distinctive artworks on Altea promenade
FACED an opponent who beat grandmaster Mihai Șubă in round one.

Spanton (1808) - José Virgilio Moya García (1453)
French Classical Alekhine-Chatard Attack
1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.e5 Nfd7 6.h4
There are 6,724 examples of this position in ChessBase's 2023 Mega database
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6...h6!?
Critical from a theoretical view is accepting the gambit with 6...Bxg5, but most popular in Mega23 is 6...a6!?
7.Bxe7
This is normal, and is Stockfish16's top choice, but Komodo14.1 for a long time prefers retreating with 7...Be3!? or 7...Bd2!?, before coming to fluctuate between the text and 7...Be3!?
7...Qxe7 8.Qg4
This is commonest, but the engines much prefer 8.f4!?
How should Black respond?
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8...f5?!
The calm 8...0-0 is normal. Without a dark-square bishop, it is not clear White is threatening very much.
9.Qg3
Most popular in Mega23 is 9.exf6 Nxf6 10.Qg6+ Qf7, after which the engines reckon 11.Qxf7+ Kxf7 12.Nf3 gives White at least a slight edge. However they reckon even better is 9.Qh5+ (or 9.Qg6+) Qf7 10.Qxf7+ Kxf7, claiming White has the upper hand after almost any reasonable continuation.
9...a6?!
Twelve out of 15 games in Mega23 saw this played, but the engines give castling as the only move to keep Black's disadvantage within acceptable bounds.
10.Be2?!
This may be a novelty, and probably not a good one. Strong is 10.Nge2, and if 10...0-0 then 11.Nf4 is winning, according to the engines.
10...Nc6?
Black is equal after 10...0-0, according to the engines.
11.Bh5+ Kd8 12.0-0-0 g5 13.Nh3 f4 14.Qf3
Probably even stronger is 14.Qg4.
14...b5
How should White meet Black's bid for counterplay?
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15.Nxd5!?
This initiates a forcing winning-sequence, according to the engines, but they prefer the simpler 15.hxg5 hxg5 16.Qg4.
15...exd5 16.Qxd5 Bb7 17.e6 Na5 18.Qxd7+ Qxd7 19.exd7
How should Black continue?
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19...Bc6?!
Possibly best is 19...Bxg2 20.Rh2 Bxh3 21.Rxh3 Kxd7 22.Bg4+ Kd6, but 23.Rdh1 gives Black a winning advantage, according to the engines.
20.hxg5 Bxd7?
This time capturing on g2 is definitely better.
21.g6 Nc6
21...Rf8 does not really change much, eg 22.Bf3 c6 23.g7 Rg8 24.Nxf4 with a large advantage for White.
22.Nxf4 Ne7 23.Rde1 Be8 24.Ne6+ Kd7 25.Nxc7
Black is busted
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The game finished:
25...Bxg6 26.Nxa8 Bxh5 27.Nb6+ Kc7 28.Rxh5 Kxb6 29.Rxe7 1-0

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