CraigEvans wrote on 09/08/07 at 19:25:03:



The point is that f5 was given in many texts as being a good move and many BDG experts lost to it.

Now I shall have to look at Nc6

Hi the following is the basis of an article that i wrote for Australian Correspondence Chess Quarterly.



[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "lemberger"]
[Black "analysis"]
[Result "*"]
[ECO "D00"]
[Annotator "Flude,David"]
[PlyCount "34"]
[EventDate "2007.01.26"]
[SourceDate "2007.01.26"]

1. d4 d5 2. e4 dxe4 3. Nc3 e5 {This is the Lemberger variation of the
Blackmar-Diemer Gambit. White has been struggling to find a really good
antidote to black's last move since Diemer started playing this line many
years ago.} 4. Nxe4 Qxd4 5. Bd3 f5 6. Nf3 Qb6 {I was testing out the latest
version of the Shredder program when the doorbell rang. After sending away two
missionaries from The Church of the Latter Day Saints I returned to discover
That Shredder was offering a piece instead of playing the book move. The more
I analysed the position the better thing's looked for white.} 7. Nc3 {
Thus is the move Shredder insisted on playing.} e4 8. O-O Nf6 {
Black reasons that he can develop a piece and win material next move.} (8...
exd3 {[%emt 0:00:00]} 9. Nd5 {
it is difficult to find a good square for the queen.} Qc6 (9... Qd6 10. Re1+
Ne7 11. c4 {and black is in big trouble}) (9... Qa5 10. Re1+ Be7 11. Qxd3 c6
12. Nxe7 Nxe7 13. Bg5 O-O 14. Bxe7 {
black has not time to save the exchange for example}) (9... Qc5 10. Re1+ Be7
11. Qxd3 {white is threatening b4 to make the queen move again.}) 10. Re1+ Be7
{black is going to lose material} 11. Qxd3 Nd7 12. Nxe7 Nxe7 13. Bg5 Nf6 14.
Rad1 Bd7 15. Ne5 Qa6 16. Qxa6 bxa6 17. Bxf6 gxf6 18. Nxd7 Kf7 {
and black's pawns are a horrible mess.}) (8... exf3 9. Re1+ Ne7 (9... Be7 10.
Nd5 Qd6 11. Qxf3 Kf8 12. Bf4 Qc6 13. Nxc7 Qxf3 14. gxf3 Nc6 15. Nxa8) 10. Qxf3
Qg6 11. Bf4 c6 12. Rad1 Nd7 13. Bc4 Nb6 14. Bb3 Bd7 15. Qe3 {
to keep the king in the centre} O-O-O $4 16. Qe5) 9. Bc4 exf3 (9... Nbd7 10.
Re1 Qc5 11. Bb3 Ne5 12. Be3 Nxf3+ 13. gxf3 Qa5 14. fxe4 fxe4 15. Nd5 Bb4 16.
Qd4 Nxd5 17. Qxe4+ Ne7 18. Bd2 Bh3 19. Qxb4 Qxb4 20. Bxb4) 10. Re1+ Be7 11.
Rxe7+ Kxe7 12. Nd5+ Nxd5 13. Qxd5 {
black is in worse trouble than the early explorers.} h6 14. Bg5+ {
the only move that keeps a significant advantage} hxg5 15. Re1+ Be6 16. Rxe6+
Qxe6 17. Qxe6+ Kd8 {
white is going to win enough pawns to make the black ending hopeless.} *