Saturday, August 30, 2014

Martin Simons vs Brown in BDG

Martin Simons takes a Caro-Kann Defence vs Thomas Brown and transposes to a Blackmar-Diemer Gambit. After the normal 3.Nc3 dxe4, these expert players chose 4.Bc4 Nf6 5.f3 exf3 6.Nxf3 Bf5 which is a BDG Ziegler. I take the occassion of this game to take a fresh look at the critical line 7.0-0 e6 8.Ne5 for my chess blog.

How can you know if I have written on a specific BDG line? Here is how you can find out. If you click on words Blackmar-Diemer Gambit highlighted in blue, that will take you to my Online BDG Keybook lists of links. In the case of today's game, you would scroll down the list to the 5.Nxf3 c6 6.Bc4 Bf5 variation; click on that. Then you have other links to similar game posts with alternatives on moves seven and eight.

In the British Championship, our hero Martin Simons faced four distinct BDG variations though some from the Caro-Kann Defence after 1.e4 c6. The normal BDG move order would be 1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 and now:
4...e3 5.Bxe3 in Simons-Taylor (my 9/4/2014 post).
4...Bf5 5.g4 in Simons-Brusey.
4...c6 5.Bc4 in Simons-Elwin.
4...exf3 5.Nxf3 c6 6.Bc4 in Simons vs Brown below.

Simons (2087) - Brown (2104), 101st ch-GBR 2014 Aberystwyth WLS (9.24), 28.07.2014 begins 1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Bc4 Nf6 5.f3 exf3 6.Nxf3 Bf5 7.0-0 e6 8.Ne5 Bg6 9.g4 Nbd7 10.Nxg6 hxg6 11.g5 Qc7 [11...Nb6! ("?" Scheerer) 12.Bxe6 fxe6 13.gxf6 gxf6 14.Qg4 (Scheerer stops here) 14...Be7! (New Engine, Houdini) 15.Qxe6 Qxd4+ 16.Kg2 Qe5-/+ which threatens to swap queens in view of the attack on h2, and Black remains up a pawn.] 12.Bf4 Bd6 13.Bxd6 Qxd6 14.Rf2 Rh4 [Stockfish at 35 ply. Or 14...Nh7 15.Ne4 Qe7 16.Qg4 Nb6 17.Bb3 Nd5 (Andrew Martin; Houdini analyzes:) 18.Re1 O-O-O 19.c4 f5 20.gxf6 Ndxf6 21.Nxf6 Nxf6 22.Qxe6+ Qxe6 23.Rxe6 Rxd4 24.Re7 g5 (or 24...Rd7 25. Rxd7 Kxd7 26. Rg2 Rh6 27. Bc2=) 25. Rg2 Ne4 26. Rxg7= White regains the gambit pawn.] 15.gxf6 Nxf6 [15...gxf6=/+ Stockfish] 16.Be2 0-0-0 17.Bf3 g5 18.Qd2 g4 19.Bg2 [19.Be2=] 19...g3 20.hxg3 Qxg3 21.Ne2 Qg6 [The crushing move is 21...Rh1+! 22.Kxh1 Qxf2 23.Qd3 Rh8+ 24.Bh3 Ng4 25.Qg3 Qxe2 26.Kg1 Qe3+ 27.Qxe3 Nxe3-+ and Black will be up three pawns in the endgame.] 22.Qd3 Qh6 23.Qg3 Rg4 24.Qh2 Qe3 25.Kf1 Rgxd4 26.Nxd4 1/2-1/2

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