Monday, January 16, 2017

Grandmaster Analysis of BDG

Kevin Sheldrick contested a Blackmar-Diemer Gambit in the Australian Open against GM Adrien Demuth. This line is also a Caro-Kann Defence. Sheldrick wrote:

“I played a granddisaster with the BDG the other day. His name was Adrien Demuth and he is from France. The highlight for me was the post-mortem after the game, where I bore witness to some brilliant attacking chess moves from the friendly Egyptian GM Ahmed Adly (defending white) against Demuth's defence of black, although ultimately Adly's line appears to be unsound. All analysis below is with Stockfish, unless otherwise stated.”

Thank you Kevin! What fun it is to have grandmasters analyze your opening and your game. My Blackmar-Diemer Theory 4 book recommends 6.Nxe4 or maybe 6.Bb3 or even 5.fxe4. The line 5.Bc4 is section 3.3 in my Blackmar-Diemer Games 2 book and my new Blackmar-Diemer Theory 4 book. Below the game has notes by Kevin Sheldrick.

Sheldrick (2151) - Demuth (2521), Australian Open, 03.01.2017 begins 1.d4 Nf6 2.Nc3 d5 3.e4 dxe4 4.f3 c6 5.Bc4 Nbd7 6.fxe4 [6.Nxe4!?] 6...e5 [6...b5!=/+] 7.dxe5 [After the game, Adly said that after 7. dxe5, I had "no chance" and suggested 7.Nf3? exd4 8.e5!? instead but he gave up on that line, due to Demuth's response of 8...dxc3 9.exf6 gxf6!-+; Surprisingly, we all missed 7.Bxf7+!? Kxf7 8.dxe5=/+ as a possibility. (OK, it's maybe not quite as surprising that I missed it as it was that the GM's both missed it) ??.] 7...Nxe5 8.Qxd8+ Kxd8 9.Bd3?! [Admittedly though, Adly also criticised 9. Bd3?! in conjunction with 7. dxe5 and I'd have been fine if I'd played 9.Bb3! instead, intending stuff like 9...Bb4 10.Nf3 Bxc3+ 11.bxc3 where I didn't realise that I would have dynamic compensation in active pieces for my shot pawn structure.] 9...Bd6 10.Bg5 Ke7?! [10...h6=/+] 11.Nf3 [11.h3!=/+] 11...h6 12.Bh4 g5 [Unfortunately I lost a lot of time around now conversing with the arbiter about suspicions over my several leavings of the playing area to go to the toilet (I drink a lot of water while playing these games in sunny Brisbane!) That loss of time made things harder for me although it's difficult to hold out against a granddisaster anyway. I took it as a compliment though that my play had been so reasonable to consider that I had been assisted by a computer up until around this point!] 13.Bf2 Nfg4 14.Bd4 Rd8 15.Ke2? [15.Be2=/+] 15...Ng6 [15...Nxd3 16.cxd3 Bxh2!-/+] 16.g3 N4e5 17.Nxe5 Nxe5 18.b3? [18.Kf2=/+] 18...Nxd3 19.cxd3 Bb4 20.Ke3 Rxd4 21.Kxd4 c5+ 22.Kc4 b5+! [Brilliant! Any other move would lose for him.] 23.Kxb5 [23.Nxb5?? Be6#] 23...Rb8+! 24.Kc6 Bxc3 [Black had a forced mate in 6 here instead - 24...Rb6+ 25.Kc7 Bxc3 26.d4 Bxd4 27.Rad1 Be5+ 28.Rd6 Bxd6+ 29.Kxc8 Rb8#] 25.Kxc5 Ba6 0-1 [26.d4 Rc8+ 27.Kd5 Bb7+ 28.Ke5 Rc5#! Notes by Kevin Sheldrick]

You may also like: King Pawn (1.e4 e5) and Queen Pawn (1.d4 d5)
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