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Hot Topic (More than 10 Replies) C41: Antoshin : improvement for black after 6.Bf4 (Read 16068 times)
Stefan Buecker
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Re: Antoshin : improvement for black in the 6.Bf4 line
Reply #1 - 03/15/09 at 20:18:22
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Thank you for posting an important opening novelty.
The strong 14...Qa5! seems to rehabilitate the attack 7...d5 8.Ndb5 Bb4, which was thought to be insufficient by Christian Seel ("Geheimwaffe Philidor", 2005: 7...d5?!) and Christian Bauer ("The Philidor Files", 2006: 8...Bb4?!). The first source considers only 11...Bxc3, and the second gives 11...Bxc3 as his main line, saying "Neither 11...Nxc3 12.bxc3 Ba3+ 13.Kb1 Na6 14.Nxa8 b5 15.Qg3 Nc5 16.Bd3 nor 11...Bc5 [...] improves the situation." This 14...b5 sample is apparently taken from a game Kalegin - Riabchonok, Smolensk 1992 (1-0, 36).

14...Qa5 15.Bxa6 bxa6 16.Ka1 Be6 is in fact difficult for White, for example:
(a) 17.Bc7 (17.Be5? d4!) Qa4
(a1) 18.c4 dxc4 19.Rd8? (19.c3 Qc2) c3! -+ 20.Qxc3 Rxd8 21.Bxd8 Bb4 22.Qb2 Bc3 -+.  
(a2) 18.Be5. Looks like an improvement: 18...d4 19.Qxd4 attacks the Qa4. But Black plays the quiet 19...Bc4! -+.
(b) 17.c4 Bb4 18.Be5 d4 19.Qxd4 Bxc4 20.Qb2 f6 21.Bc7 (21.Bd4 c5) Qa4 (threatens Bc3!) 22.Kb1 Ba3 23.Qc3 (23.Qb7 Bb5) Bxa2+ 24.Ka1 Bb4 25.Qb2 Bc4+ 26.Kb1 Rxa8 -/+.
(c) 17.Qd3 Rxa8 18.Rhe1 Be7 19.Rxe6 fxe6 20.Qh3 and White seems to survive.
Apparently you ran into a secret weapon.
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C41: Antoshin : improvement for black after 6.Bf4
03/11/09 at 19:58:25
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Hi everyone. That is my first posting on the forum Smiley

A few days ago I played a game against a strong fide master, and he played the Antoshin.  I went for the Ff4 variation. It was probably a mistake considering i could only vaguely remember the critical variations : I was out of book after Bb4. The game went :

1.e4 e5 2.Nf3 d6 3.d4 cd4 4.Nxd4 Nf6 5.Nc3 Be7 6.Bf4 Be7 7.Qd2 d5 8.Ndb5 Bb4 9.000 c6 10.Nc7 Nxe4 11.Qe3 Nxc3 12.bc3 Ba3+ 13.Kb1

Up to this point, it seems to be all theory, and white is supposed to be better (he will be a whole rook up!). During the game I thought I had reasonable chances to defend and have a better position. But :

13...Na6 14.Nxa8 Qa5!

played instantly by my opponent. I think after this move black has very good compensation for the sacrified material, for example 15.Bxa6 ba6 16.Ka1 (16.Nc7 Be6!) Be6! with the annoying threat d4. The point is that white cannot save the knight, so that he will only be exchange up. In the game, i made a mistake and went down very quickly :

15.c4? Ff5 (it's probably already over) 16.g4 Bg6 17.cd5 Nb4 18.Rd2 Nxc2! 19.Rxc2 Qb4+ 20.Qb3 Qe1+ 21.Bc1 Qxc1 0-1 nice mate

Any thoughts on this?
« Last Edit: 07/19/11 at 13:32:05 by Smyslov_Fan »  
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