Showing posts with label Alekhine Defense. Show all posts
Showing posts with label Alekhine Defense. Show all posts

Thursday, June 26, 2008

Alekhine Defense : Krejcik Gambit w Bxf7


Alright, I ran the engine tournament and was suprised that Deep Shredder 10 won. Rybka has been the reigning champion. I was very pleased with this engine tournament. The path to victory for Black is clear now. Although the king has moved and unable to castle, Black still has an advantage in the opening. This is probably due to the advanced pawns and the fact that you gain tempos by attacking the queen. In the games, if the queens can be traded off early then Black gains the big center and more active pieces. I'm ready for this attack now and will gladly accept the gambit. Here are the results:
...
krejcikBxf7 2008
Deep Shredder 10 UCI 22.5 - 9.526.5 - 5.5** 49.0/642
Rybka 2.3.1 32-bit 9.5 - 22.516.0 - 16.0 ** 25.5/643
HIARCS 11.1 UCI 5.5 - 26.516.0 - 16.0 ** 21.5/64
...
The 96 game PGN can be found here: http://www.lockism.com/engine/KrejcikBxf7.pgn
Here is a sample game of how Black can gain a good center and even destroy the Whites pawn structure.
.
[Event "krejcikBxf7"]
[Site "?"]
[Date "2008.06.25"]
[Round "5.1"]
[White "HIARCS 11.1 UCI"]
[Black "Deep Shredder 10 UCI"]
[Result "0-1"]
[PlyCount "111"]
[EventDate "2008.06.25"]
[EventType "tourn"]

1. e4 Nf6 2. Bc4 Nxe4 3. Bxf7 Kxf7 4. Qh5+ Kg8 5. Qd5+ e6 6. Qxe4 d5 7. Qe3 d4 8. Qe2 d3 9. Qxd3 Qxd310. cxd3 Nc6 11. Na3 e5 12. Nf3 Bg4 13. Nc2 Bxf3 14. gxf3 Kf7 15. b3 Bc5 16.Bb2 Rad8 17. Ke2 Rhe8 18. Rac1 a5 19. Rhg1 g6 20. Rg4 h6 21. h4 b6 22. Rcg1 Re623. Bc3 b5 24. Re4 b4 25. Bb2 Rde8 26. Rc1 R8e7 27. Rc4 Bb6 28. Re4 Rd6 29. Ne3 Bd4 30. Nc4 Rf6 31. Bxd4 exd4 32. Re1 Rfe6 33. Kd1 Kf6 34. Kc2 Kf7 35. h5 gxh5 36. Rh1 Kg6 37. Reh4 Re1 38. R1h3 Rf1 39. Rxh5 Ree1 40. Rxh6+ Kf7 41. Rh7+ Ke842. Rh8+ Kd7 43. a4 Rb1 44. R3h7+ Ne7 45. Rh1 Rxh1 46. Rxh1 Rxh1 47. Nxa5 Nc648. Nc4 Ke6 49. f4 Kf5 50. Kb2 Kxf4 51. Kc2 Ne5 52. Na5 Kf3 53. Nc4 Nxc4 54.dxc4 Ke2 55. d3 Rd1 56. a5 Rxd3 57. a6 Rc3+ 58. Kb2 d3 0-1

Wednesday, June 25, 2008

Alekhine Defense : Krejcik Gambit


1. e4 Nf6 2. Bc4!? An interesting line with only one real trap to it. I was caught by this in a 1 min blitz game and wanted to see what the refutations were. There were many interesting games. Rybka won again. I really need some new engines. Something to give Rybka a run for its money. I'm going to run a tournament between Rybka, Hiarcs, and Deep Shredder 10 for the line 1. e4 Nf6 2. Bc4 Nxe4 3. Bxf7+ . This was the line that kinda threw me and in the tournament there were only a couple of games that ran this line. I will post the results when the games finish. I'd like to do a 40-60 game tournament with the 3 engines. The results to the initial Krejcik Gambit tournament with 5 engines and 40 games was as follows:


krejcik 2008

1 Rybka 2.3.1 32-bit 6.0/8

2 HIARCS 11.1 UCI 4.5/8

3 Deep Shredder 10 UCI 3.5/8 13.50

4 Fritz 9 3.5/8 13.25

5 Shredder 10 UCI 2.5/8


The PGN can be downloaded here: http://www.lockism.com/engine/Krejcik.pgn

Thursday, June 19, 2008

Alekhine Brooklyn Variation






1. e4 Nf6 2. e5 Ng8!



The Brooklyn Variation of the Alekhine Defense. I ran across this variation on the Unorthodox Chess Openings yahoogroups. They constantly talk about new and interesting openings. This one is 'somewhat' interesting. Its more for the shock value than anything else. I viewed a couple of games they posted and wanted to view more. Following Clyde Nakamura's lead I decided to run a chess engine mini-tournament. There were 12 games in all and they were very interesting. Not suprising though was the fact that black only won one of the games. There were many draws and many wins. While watching some of these games though I realized that for lower rated players (like me) could easily equalize and stun the opponents. Most likely in a 2 or 1 min game. I have come across these positions before so I will try this opening soon. The resulting over extended center kinda reminds me of positions I've reached with the Nimzovitch defense. I will post more about that after I practice this Brooklyn Variation. The games can be found here: http://www.lockism.com/engine/ The file name is Brooklyn_Variation and the results of the games were as so:

Oh.. and this was my first Chess Engine Tournament. I think I could have tweaked it more but am pleased with the results. My analysis can only get better from here on out.