OEU2200 Book Analysis of Blackmar-Diemer Gambit
Ryan Ripley
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. (mi...@crown.net) Thanks for you help and input.
Ryan P. Ripley
Ryan (mi...@crown.net) Visit my home page!!
http://www.crown.net/miker
Tim Sawyer
It is always nice to see analysis on the BDG, even if it is incorrect.
Ryan P. Ripley offer his analysis and writes: "Well, here is what all of
the opening books have to offer."
Apparently he is unaware of BDG opening books and the major sources (in
the USA) for all opening books, such as Chess Digest and Chessco/Thinkers'
Press.
When I wrote my 700 game "Blackmar-Diemer Gambit Keybook", I cited about
30 books on the BDG. Most are still available from the above sources.
There have been about half a dozen more since then (1992).
It is nice to see someone try to evaluate openings such as he has done,
but beware, sadly Mr. Ripley's evaluation is full of errors.
Tim Sawyer
Ryan Ripley
>Well, here is what all of the “opening books” have to offer.
opening books only refer to MCO, and ECO. I have to admit that the
analysis is incorrect. I am currently working on corrections to this.
The first posting was meant to 1> encourage/gauge interest, and
2>create a starting point.
Thanks to all of you that have already contributed. Post you analysis
here, and lets see what we come up with...
Later
Ryan
Ryan (mi...@crown.net) Visit my home page!!
D.Regis
In article <4ucghd$n...@newsbf02.news.aol.com> tims...@aol.com
(Tim Sawyer) writes:
>It is nice to see someone try to evaluate openings such as he has done,
>but beware, sadly Mr. Ripley's evaluation is full of errors.
Tease.
Do tell.
Tim Sawyer
Just a few comments from memory of Mr. Ripley's evaluations. As I noted,
there are more than 30 books on the BDG and he implied there was very
little.
After 1.d4 d5 2.e4 dxe4 3.Nc3
1. Ripley recommended 3... e5 4.Be3 (Schiller's favorite), but the line is
questionable at best. I recently won a game in the critical line as Black
after 4... exd4 5.Bxd4 Nc6 6.Bb5 Bd7 7.Nge2 Nf6 and Black has the better
game. White has many 4th move options, but 4.Nxe4 or 4.dxe5 seems the
best, depending on your temperment.
2. Ripley gave 3... Nf6 4.f3 Bf5 5.g4 Bg6 6.h4 h6, but 6... exf3 wins for
Black. 6.g5 or 5.fxe4 are correct.
3. Ripley gave 3... Nf6 4.f3 exf3 5.Qxf3 as unclear, but I have seen
nothing to change the evaluation since my 1992 book that Black is better.
One person played 5.Qxf3 in the World BDG Correspondence Tournament, and I
won easily. The correct move for White is 5.Nxf3.
Tim Sawyer
D.Regis
Before I get stuck in, this thread surely belongs in
rec.games.chess.analysis. Please follow-up there and not
rec.games.chess.misc.
I have three follow-ups
1. editing only
2. editing with alternatives given in Gary Lane's book
3. review of GL book
>BLACKMAR-DIEMER GAMBIT
Firstly:
a. can we lay this out more like a tree in a book? I've had a go!
b. names and references would also be helpful when quoting from other
sources
c. the size of advantage is important: I suggest the ASCII scale
= equal
+= slight plus
+/- clear plus
+- large plus, probably winning
& unclear
&/= with compensation
d. for consistency, should it be O-O (letters) or 0-0 (zeroes)?
So: all the material below is Ryan's, edited by me
All unattributed text is Ryan's/MCO/BCO 1(?)
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 7. Nge2 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
(1) The Gambit Declined
(2) The Gambit Accepted
(1) The Gambit Declined
A 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 and now:
<A1> 9.d5? cxd5 10.Nxd5 Be4
(10...exd5 11.Bxd6 with a better position for white)
11.Qe3 exd5 12.Rxd5 f5 13.Bb5+ Nc6
14.Nf3 Be7 15.Rxd6 Bxd6 16.Rd1 0-0 with an unclear position.
<A2> 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.)
(2) The Gambit Accepted
4...exf3
Here are many forks in the road. You can either continue
Nxf3, or Qxf3. Both continuations lead to interesting
positions which allow for further research and improvements.
1A. 5. Nxf3
A1 5. Nxf3 Bf5
A2 5. Nxf3 Bg4
A3 5. Nxf3 e6
A4 5. Nxf3 g6
1B. 5. Qxf3
A. 5. Nxf3
A1. 5.Nxf3 Bf5
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 position)
A2. 5.Nxf3 Bg4
5.Nxf3 Bg4
(Other defenses are:
<A3> 5...e6 6.Bg5 h6 (or...c5) 7.Bxf6 Qxf6 8.Bc4 Bd6 9.0-0
Qd8 10.Qe2 advantage for white.
<A4> 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 and now:
<A21> 9.Bd3 Be7 10.g4 Nd5 11.Rf1 0-0 12.Ne4 Nd7 =
<A22> 9.Bd3 Nbd7 10.0-0 Be7 11.Rf2 Qa5 12.g4 0-0 =
B. 5.Qxf3
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
position.)
6.Be3 c6 7.Bc4 Bg7 8.Nge2 Nbd7 9.0-0-0 Nb6 10.Bb3 a5 11.a3
Bg4 with advantage to black)
--
May your pieces harmonise with your Pawn structure and
your sacrifices be sound in all variations
D _
/ "()/~ Dave Regis &8^D* WWW: http://www.ex.ac.uk/~dregis/DR/chess.html
|| \_/| = DrDave on BICS
~\ / "...what else exists in the world but chess?"
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