Wednesday, October 15, 2008

Transpositions: From the Caro-Kann to the BDG (Update)

In my last post I gave the opening moves of the game von Hennig - van Nüss, a transposition from the Caro-Kann to the Blackmar-Diemer. Here's the complete score.

von Hennig,Heinrich - van Nüss,Alfred
Caro-Kann to BDG, Euwe Defense

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Bc4 Nf6 5.f3 exf3 6.Nxf3 e6 7.0-0 Be7

8.Qe2 Nbd7 9.Bf4 0-0 10.Rad1 Nb6 11.Bb3 Nbd5 12.Be5 Bd7 13.Ng5 Be8 14.Rd3 Nxc3 15.bxc3 h6 16.Nh3 g6 17.Rg3 Nd7 18.Bf4 Kg7 19.Qd2 Rh8 20.Be3 Qa5 21.Nf4 Nf8 22.d5 h5 23.Bd4+ f6 24.d6!

24...Bxd6?? The passed d-pawn will prove decisive, but taking it would be disastrous. 25.Bxf6+ Kg8 (25...Kxf6?? 26.Nxg6+) 26.Qxd6+-
25.Nxe6+ Nxe6 26.Bxe6 c5 27.Be3 h4 28.Rgf3 Bc6 29.Bd5 Rh5 30.Bxc6 bxc6 31.Qf2 Qxa2? 32.Rxf6 Bxf6 33.Qxf6+ Kh7 34.Qe7+ Kh8 35.d7 Qg8
35...Rf5 36.d8Q+ Rxd8 37.Qxd8+ Kg7 38.Rxf5 gxf5 39.Qg5++-
36.Bg5 Rxg5 37.Qxg5 Qd5

38.Qh6+ 1-0
Simpler was 38.Qxd5 cxd5 39.Re1
While searching for the complete score today I came across one of my old games with this variation. Indulge me.

Purser,Tom (1780) - Lewie,David (2030)
American Legion Open
Fairborn, Ohio, 1981
Caro-Kann to BDG, Euwe Defense

1.d4 c6 2.e4 d5 3.Nc3 dxe4 4.Bc4 e6 5.f3 exf3 6.Nxf3 Nf6 7.0-0 Be7

So far as in the previous game.
8.Qe1 Nbd7 9.Bd3 c5 10.Qg3 cxd4 11.Nb5 Kf8 12.Nc7 Nh5 13.Nxe6+ fxe6 14.Nxd4+ Ndf6 15.Qh4 g6 [15...e5] 16.Bh6+ Ng7 17.Nf3?! Kg8 18.Ne5 Nf5?

19.Rxf5! exf5??
Allows a forced mate. Best was 19...Nd5 20.Rg5+/-
20.Bc4+ Nd5 21.Bxd5+ Qxd5 22.Qxe7 1-0