Quote:
Originally Posted by YouKnowWho
Hey guys,
a little request. My computer with all my chess programs died and I haven't installed anything after re-installing windows. Could someone with an engine quickly analyze this game? I am mainly interested in an evaluation after move 22. g5 a4 and then further. Basically if my sacrifice was correct or not and don't laugh - this was played like 3.5 years ago so the level of play might not be up to par.. Yet I miss my style of play of those days - sac everything and mate! These days I seem to only win positionally :/
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be6 8. Qd2
Nbd7 9. f3 b5 10. a4 b4 11. Nd5 Bxd5 12. exd5 a5 13. O-O-O Be7 14. g4 O-O 15.
Qf2 Ne8 16. h4 Nc7 17. f4 Nf6 18. Qg2 exf4 19. Bxf4 Qd7 20. Be2 Qxa4 21. Kb1
Qd7 22. g5 a4 23. gxf6 Bxf6 24. Nd4 a3 25. b3 Qf5 26. Rhf1 Nxd5 27. Bg5 a2+ 28.
Ka1 Qxc2 29. Bf3 Qc3+ 30. Qb2 Qxb2+ 31. Kxb2 a1=Q+ 32. Rxa1 Bxd4+ 33. Kc2 Rfc8+
34. Kd3 Rxa1 35. Bxd5 Rxf1 36. Kxd4 Rd1+ 0-1
thanks in advance!
I entered the position after 22. ... a4, activated infinite analysis, and then went out to lunch. Just got back and here's what Firebird says at depth 20:
Analysis by FireBird 1.0 w32:
1. +/- (0.94): 23.Nb3-c5 d6xc5 24.d5-d6 a4-a3 25.d6xe7 Qd7xe7 26.g5xf6 Qe7xf6 27.Bf4-c1 Qf6-e6 28.Rh1-e1 Ra8-d8 29.Be2-d3 Qe6-b6 30.Bc1-g5 Rd8-e8 31.Re1-f1 Kg8-h8 32.Bd3-c4 Qb6-g6 33.Qg2-f2 Nc7-e6
2. +/= (0.31): 23.g5xf6 Be7xf6 24.Nb3-d4 a4-a3 25.Bf4-c1 Qd7-a4 26.Be2-c4 Qa4-a7 27.Qg2-d2 Qa7-c5 28.b2-b3 Nc7xd5 29.Bc4xd5 Qc5xd5 30.Rh1-f1 Bf6-e5 31.Qd2xb4 Rf8-c8 32.Rf1-f2
3. -/+ (-1.00): 23.Nb3-d4 Nf6xd5 24.Bf4-d2 a4-a3 25.b2-b3 Ra8-a5 26.Be2-c4 Rf8-b8 27.Kb1-a2 Ra5-c5 28.Qg2-f3 g7-g6 29.Rd1-f1
So it looks like it prefers Nc5, however the sac is sound and still leaves white with an advantage. I'll work my way through the rest of the game now, and see what else it says.
Edit: 23.g5xf6 Be7xf6 24.Nb3-d4 a4-a3 are all best moves according to Firebird, but 25. b3? looks like an inaccuracy. Sholar's Bc1 is better, and Bg5 is better still, according to Firebird at depth 15:
Analysis by FireBird 1.0 w32:
1. +/= (0.56): 25.Bf4-g5 Bf6xd4 26.Rd1xd4 a3xb2 27.Rd4xb4 Rf8-b8 28.Rb4xb8+ Ra8xb8 29.Qg2-e4 Rb8-e8 30.Qe4-c4 Nc7xd5 31.Qc4xd5 Re8xe2 32.Kb1xb2 Re2-e5 33.Qd5-a8+ Re5-e8 34.Qa8-a6 Re8-b8+ 35.Kb2-c1
2. +/= (0.32): 25.Bf4-c1 Qd7-a4 26.Be2-c4 Qa4-a7 27.Qg2-e4 Qa7-c5 28.Qe4-d3 Nc7xd5 29.Rh1-g1 Rf8-c8 30.Bc4-b3 a3xb2 31.Bc1xb2 Kg8-h8 32.Rd1-e1
3. = (0.00): 25.Qg2-h3 Qd7xh3 26.Rh1xh3 a3xb2 27.Kb1xb2 Nc7xd5 28.Bf4-g5 Bf6-e5 29.Be2-c4 Nd5-c3 30.Rd1-d3 Nc3-a4+ 31.Kb2-b1 Na4-c3+ 32.Kb1-b2
4. = (-0.05): 25.Qg2-g4 Qd7xg4 26.Be2xg4 a3xb2 27.Bf4xd6 Bf6xd4 28.Rd1xd4 Nc7-b5 29.Bd6xf8 Nb5xd4 30.Bf8xg7 Kg8xg7 31.Rh1-d1 Ra8-a1+ 32.Kb1xb2 Ra1xd1 33.Bg4xd1 Kg7-f6 34.c2-c3 b4xc3+ 35.Kb2xc3 Nd4-f5 36.Kc3-b4 Nf5xh4 37.d5-d6 Nh4-f5 38.Kb4-c5 Nf5xd6 39.Kc5xd6 h7-h6 40.Bd1-f3 Kf6-g7
5. = (-0.08): 25.b2-b3 Qd7-f5 26.Bf4-g5 Nc7xd5 27.Bg5xf6 Nd5-c3+ 28.Kb1-a1 Qf5xf6 29.Rd1-d2 Ra8-a5 30.Be2-c4 d6-d5 31.Bc4-d3 Ra5-c5 32.Qg2-f2
Last edited by BobJoeJim; 04-04-2010 at 05:54 PM.