Monday, June 7, 2021

Blackmar-Diemer Gambit Zaura

One perplexing Blackmar-Diemer Gambit line is the Ziegler 5...c6 when it transposes to the Euwe 5...e6 via 6...e6. This reason is White's bishop. After 5...e6 the bishop goes to Bd3, however, after 5...c6 the logical continuation is 6.Bc4 Bf5. When Black instead plays 6.Bc4 e6, the game looks like a Euwe with the bishop on the less effective Bc4.

The good thing for White is that this c6/e6 variation is so slow that White has time to retreat the bishop to Bd3 at an appropriate time. This led to a kingside win in the game between Vidmantas Zaura and Grazina Setikiene during a tournament from Lithuania.

Zaura (2087) – Setikiene (1845), TCh-LTU 2021 Lithuania, 16.05.2021 begins 1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 exf3 5.Nxf3 c6 6.Bc4 e6?! [Black does better to develop the bishop outside the pawn chain with 6...Bf5] 7.0–0 Be7 8.Bg5 Nbd7 9.Qe1 Nb6 10.Bd3 [The position takes on the characteristics of the Euwe Variation 5...e6.] 10...Nbd5 11.Rd1 Nxc3 12.bxc3 Bd7 13.Ne5! h6 14.Bd2 Bd6 15.Qg3 Rg8 16.Rb1 Rb8
17.Bg6! Qe7 [17...fxg6 18.Qxg6+ Ke7 19.Qf7#] 18.Bf4 Bxe5 19.Bxe5 Rc8 [19...fxg6 20.Bxb8+-] 20.Rxb7 a6 [20...fxg6 21.Qxg6+ Qf7 22.Qxf7+ Kxf7 23.Rxd7+ Kg6 24.Rxa7+-] 21.c4 [Or 21.Bd6! Qd8 22.Bc5+-] 21...fxg6 22.Qxg6+ Qf7 23.Qxf7+ Kxf7 24.Rxd7+ Kg6 25.Ra7 [25.Rd6!?] 25...Ra8 26.Rxa8 Rxa8 27.Rb1 a5 [27...c5 28.Rb6+/-] 28.Rb6 c5 29.d5 [29.Rxe6+-] 29...exd5 30.cxd5 Kf5 31.Bxf6 gxf6 32.Rc6 Ke5 33.Rxc5 Kd4 34.Rc6 Kxd5 35.Rxf6 Rc8 36.Rxh6 Rxc2 37.Rh5+ [White will be up three pawns in this rook endgame.] 1–0
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