Thursday, October 20, 2016

Tumova Wins Blackmar-Diemer

Anna Tumova was ranked by FIDE in the top 10 for her age group in the Czech Republic. She defeated Hibhia Ni Mhuireagain of Ireland in a Blackmar-Diemer Gambit. They competed at the 2016 World Youth event held in Khanty-Mansiysk, Russia.

The girls reached a Blackmar-Diemer Gambit Declined Vienna by transposition from a Scandinavian Defence after 1.e4 d5 2.d4 dxe4 3.Nc3 Bf5 4.f3 Nf6. That normally arises from the move order 1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 Bf5. Tumova played 5.Bg5 the way Grandmaster Tartakower played 60 years ago. Diemer and others preferred 5.fxe4 or 5.g4. Most of the other players in this event were rated hundreds of points above them. These girls finished 4-7, but here they played a very interesting game.

The line 5.Bg5 is section 4.0 in my Blackmar-Diemer Games 2 book.

Tumova (1711) - Ni Mhuireagain (1433), World Youth Girl U16 2016 Khanty-Mansiysk RUS (10.27), 02.10.2016 begins 1.e4 d5 2.d4 dxe4 3.Nc3 Bf5 4.f3 Nf6 5.Bg5 c6 [The only continuation that gives White trouble in theory is 5...Nbd7 6.fxe4 (6.g4 Bg6 7.Qe2 exf3 8.Nxf3 c6 9.0-0-0 e6=/+) 6...Bxe4! (6...Nxe4!? 7.Qf3 Nxg5 8.Qxf5 e6 9.Qd3 h6 10.0-0-0 c6=/+) 7.Bxf6 Nxf6 8.Nxe4 Nxe4 9.Nf3 e6=/+ White does have bishops of opposite color, but the endgame has not yet been determined.; If 5...exf3 6.Qxf3! Qc8 7.Bd3 Bxd3 8.Qxd3 Nbd7 9.0-0-0 c6 10.Nf3= White has compensation for the pawn with open lines, developed active pieces and a Black king stuck in the center for at least a few more moves.] 6.Bxf6! gxf6 [6...exf6 7.fxe4 Bg6 8.Qd3 Bd6 9.0-0-0 0-0= The material and chances are equal. Players will attack on opposite side.] 7.fxe4 Bg6 8.Qd2 [8.Qd3 Nd7 9.0-0-0=] 8...Qa5 [8...h5! 9.Qf2 Bh6 10.Bc4 Qb6 11.Bb3 Nd7 12.Nge2 0-0-0=/+] 9.Nf3 [9.0-0-0!?=] 9...h5 10.Bd3 Bh6 11.Qf2 Nd7 12.Nd2 [12.Rb1 0-0-0 13.b4=; 12.0-0 0-0-0 13.Rab1=] 12...Rg8 13.0-0-0 Nb6 [13...0-0-0 14.Kb1=] 14.Kb1 Bh7 [There is still time to get the king out of the center with 14...0-0-0= ] 15.d5! Bxd2 [15...Nd7 16.Nc4 Qc5 17.Qe2+/-] 16.Rxd2 cxd5 [16...0-0-0 17.Rhd1 cxd5 18.exd5 Bxd3 19.Rxd3+/=] 17.Bb5+! Kf8 18.exd5 Rc8 [If 18...Nc8 19.Qf4 Nd6 20.Bd3+/-] 19.Bd3?! [Unfortunately this allows Black to escape. White's good play would reach its culmination after 19.d6! exd6 20.Qxf6 Rg6 21.Qh8+ Bg8 22.Re2+-] 19...Bxd3?! [The correct defense was the offensive 19...Rxc3! 20.Bxh7 (Not 20.bxc3? Na4!-+) 20...Nc4 21.Re2 (21.Bxg8? Qb4 22.b3 Nxd2+ 23.Qxd2 Rxb3+ 24.axb3 Qxd2 25.Bh7 Qxg2-+) 21...Rg4 22.d6 Nxd6 23.Qe1 (23.Bd3? Ra4 24.a3 Rcxa3 25.bxa3 Rxa3-+) 23...Rc5 24.h3 Rg7 25.Bd3 Qxe1+ 26.Rhxe1 e5=/+] 20.Rxd3 Rd8 21.d6 Nd7? [21...Rxd6 22.Rxd6 exd6 23.Qxf6+/=] 22.dxe7+ Kxe7 23.Nd5+ Kf8 24.Rf1 [24.Nf4!+-] 24...Ne5 25.Nxf6 [25.c4!+/-] 25...Nxd3 26.cxd3 Rg7 [26...Rh8 27.Ne4 Qd5 28.Ka1 Rh6=] 27.Qc2?! [27.Qf3=] 27...Rd6 [27...Rg6!=/+] 28.Re1? [White slides the rook over to threaten mate. 28.Nxh5 Rc6 29.Qe2 Rg5 30.Qf2 Qd5 31.Nf4=] 28...Rxf6? [28...Qxe1+ 29.Qc1 Qxc1+ 30.Kxc1 Rxf6-+] 29.Qc8+ Qd8 30.Qxd8# 1-0


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