Monday, March 11, 2013

Dunne Invests in BDG vs Fidelity

Alex Dunne is a famous correspondence master and columnist for the USCF Chess Life magazine for decades. Dunne is not known to be a Blackmar-Diemer Gambit player. However in 1983 Alex Dunne chose to play the BDG Ryder 5.Qxf3 Qxd4 6.Bf4 in a correspondence game vs the Fidelity chess computer. This game is cited in the 1995 monograph by Eric Schiller (with John Crayton) on "The Ryder Gambit Accepted."

Schiller wrote: "In my first book on the Blackmar Gambit, I stated that as far as the Ryder Gambit (1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 exf3 5.Qxf3) is concerned, Black could simply eat both pawns and live. Rev. Tim Sawyer, in his excellent compilation of BDG theory, pointed out that my statement wasn't backed up by analysis, so this monograph presents a thorough treatment, and at least one refutation of White's play."

Two paragraphs later Schiller adds: "The Ryder Gambit is a fun opening, one which gives rise to spectacular combinational possibilities. Even a player with limited experience can create a magnificent mating attack which can be shown to friends..." [Great idea!]

Of course Alex Dunne is a very experienced player. His only other Blackmar-Diemer in my database is a postal game from 1973 vs C. Goodman where Dunne somehow survived and won as Black in a risky line of the Euwe where White has some beautiful wins. Thirty years ago Alex Dunne chose the line that Jocelyn Bond recently suggested in his notes after 5.Qxf3 Qxd4 6.Bf4 e5 7.Nge2 Qd6 8.Rd1. In this well played correspondence game Dunne demonstrates how a master handles a position where he has sacrificed two pawns.

Dunne-Fidelity, corr, 1983 begins 1.d4 Nf6 2.f3 d5 3.e4 dxe4 4.Nc3 exf3 5.Qxf3 Qxd4 6.Bf4?! [6.Be3 Qg4 7.Qf2 e5 8.a3 Bd6 was Schiller's recommendation for Black in 1995.] 6...e5 7.Nge2 Qd6 8.Rd1 Qe6 9.Bg5 Nbd7 [9...Be7-+] 10.Nb5 Bb4+ [10...Qb6! 11.Nec3 c6 12.Nd6+ Bxd6 13.Rxd6 Qxb2-+ and White has some compensation for the three pawns sacrificed, but not much.] 11.Nec3 Ba5 12.Be2 [Houdini 3 much prefers 12.b4 Bb6 13.Na4 0-0 14.Nxb6 Qxb6-/+] 12...a6 13.Na3 Qxa2?! [Such creative pawn grabbing is not good. Much better is simply 13...0-0!-+ ] 14.0-0 Qxb2 15.Nd5 Bb6+ [If now 15...e4 16.Qf5 Qxa3 17.Bxf6 Nxf6 18.Nxf6+ gxf6 19.Qxf6 Qc5+ 20.Kh1 0-0 21.Bc4 Be6 22.Rd5! and Black must sacrifice his queen to avoid the perpetual check after 22...Bxd5 23.Qg5+ Kh8 24.Qf6+] 16.Kh1 0-0? [Too late to castle. Black has to try 16...e4 17.Qf5 0-0 18.Nc4 Qxc2 19.Bxf6 Nxf6 20.Nxf6+ gxf6 21.Qxf6= and another perpetual check is likely.] 17.Nc4 Qxc2 18.Bxf6 Nxf6 19.Bd3 Qa4 20.Nxf6+ gxf6 21.Qxf6 Qc6 22.Qg5+ Kh8 23.Nxe5 Qe6 24.Bc4 f6 25.Qh6 1-0

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