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From: miker@crown.net (Ryan Ripley)
Newsgroups: rec.games.chess.misc
Subject: OEU2200 Book Analysis of Blackmar-Diemer Gambit
Date: Wed, 07 Aug 1996 06:05:50 GMT
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OPENING EVALUATION for UNDER 2200 PLAYERS
(To Be Know As OEU2200 From Here On)

	After following the rec.games.chess.analysis thread for nearly
a year now, I came upwith an idea.  Why not go ahead and direct a
thread that explains exactly what we all want to know about.  Opening
preparation is a vital part of your training for tournaments.  So
let’s get to work.  I will be using past posts, along with new ideas
and evaluations to begin with.  Let’s begin with an opening that has
appeared in the news group recently. The Blackmar-Diemer Gambit is a
brash opening  that tends to open up the game quickly, leading to wild
tactical games.  The gambit is not seen much at the master level, but
is quite dangerous to the unprepared opponent.

BLACKMAR-DIEMER GAMBIT

	
1.d4 d5 2.e4!? (I give the move e4 !? because this opening is 	
under a persistent cloud.) 2...dxe4 3.Nc3 (3.f3 is refuted by 3...e5!
4.dxe5 Qxd1+ 5.Kxd1 Nc6 6.Bf4 Nge7 with an advantage for
black.)3...Nf6 (Popiel’s Lember Counter Gambit 3...e5 is met by Be3
exd4 5.Bxd4! Nc6 6.Bb5 Bd7 7Nge2 Nxd4 8.Qxd4 c6 9.Bc4 Nf6 10.0-0-0 Be7
11.Rhe1 0-0 12.Ng3 with an advantage for white.) 4.f3 exf3 (4...Bf5
5.fxe4! (5.g4 Bg6 6.h4 h6 with an unclear posistion) 5...Nxe4 6.Qf3
Nd6 7.Bf4 e6 8.0-0-0 c6 <A> 9.d5? cxd5 10.Nxd5 Be4 (10...exd5 11.Bxd6
with a better posistion for white) 11.Qe3 exd5 12.Rxd5 f5 13.Bb5+ Nc6
14.Nf3 Be7 15.Rxd6 Bxd6 16.Rd1 0-0 with an unclear posistion. <B>
9.g4 Bg6 10.Qe3 Be7 11.Nf3 Nd7 12.d5 cxd5 13.Nxd5 exd5 14.Bxd6 Rc8
15.Rxd5 Bxc2 16.Kd1 with slightly better chances for white.) Here is
where many forks in the road.  You can either continue Nxf3, or Qxf3.
With both continuations leading to interesting posistions which allow
for further research and improvements.  A. 5.Nxf3 Bf5 6.Ne5 e6
7.g4 Bg6 (7...Be4 8.Nxe4 (8.Rg1 Bb4 9.d3 Nc6 10.Be3 Nxe5 11.dxe5
Bxd3=) 8...Nxe4 9.Qf3 Qxd4! 10.Qxf7+ Kd8 11.Qf4 Bb4+ (11...g5? 12.c3
Qd5 13.Nf7+ Ke8 14.Qf3 Rg8 15.Bg2 with an advantage for white) 12.c3
Bxc3 (12...g5 13.Qe3) 13.bxc3 Qxc3+ 14.Kd1 with an advantage for
white) 8.Qf3 c6 (9.g5 Ng8 10.Bd3 Qxd4 11.Nxg6 hxg6 12.Bf4 c5
13.Rf1 e5 14.Qe2 Ne7 15.Bxe5 Qe3 16.Qxe3?! (16.Ne4) 16...Bxe3 with an
unclear posistion) A1. 5.Nxf3 Bg4 (Other defenses are: <A> 5...e6
6.Bg5 h6 (or...c5) 7.Bxf6 Qxf6 8.Bc4 Bd6 9.0-0 Qd8 10.Qe2 advantage
for white. <B> 5...g6 6.Be4 Bg7 7.Ne5 0-0 8.Bg5 Nd7 (8...Nc6 9.Nxc6
bxc6 10.0-0-0 advantage for white) 9.0-0 c6 10.Kh1 Nb6 11.Nb3 a5 =)
6.h3 Bxf3 7.Qxf3 c6 8.Be3 e6 (<A> 9.Bd3 Be7 10.g4 Nd5 11.Rf1 0-0
12.Ne4 Nd7 = <B>9.Bd3 Nbd7 10.0-0 Be7 11.Rf2 Qa5 12.g4 0-0 =) B.
5.Qxf3 g6 (5...Qxd4 is double-edged and not fully explored 6.Be3
(6.Nb5 Qe5+ 7.Be2 Na6 with the advantage to white. 6...Qb4 7.a3 Qb6
8.Bc4 Bg4 9.Qg3 Nxc6 with an unclear posistion.) 6.Be3 c6 7.Bc4 Bg7
8.Nge2 Nbd7 (9.0-0-0 Nb6 10.Bb3 a5 11.a3 Bg4 with advantage to black)


Well, here is what all of the “opening books” have to offer.
Unfortunately, there are very few complete games available on the
“net” that concerns the Blackmar-Diemer Gambit.  Here is
where the group comes in.  OEU2200 is meant to cultivate thought, and
to build complete theroitical articles about opening play.  These
articles will include middlegame patterns, and possible endgame play.
To achieve this, your help is needed.  Please contribute.  If you are
rated 2000 or even 200, your input is extremely valuable.  The
articles will be kept at my chess homepage.
(http://www.crown.net/~miker)  Feel free to suggest future openings
for discussion. (miker@crown.net)  Thanks for you help and input.

Ryan P. Ripley
Ryan (miker@crown.net)  Visit my home page!!
http://www.crown.net/miker