Author: Dan Ellwein
Date: 10:03:50 07/21/05
Go up one level in this thread
On July 21, 2005 at 01:15:26, Eelco de Groot wrote:
>This is from the latest game Pro Deo 1.1 Vulcan {9i9k} versus Gandalf.
>Everything seemed still more or less under control by Vulcan, but investing
>material here, playing 30.Nxg6? in the vague hope that one or two of its
>centerpawns might make it to the touchdown-line was asking to much of the
>position.
>
>White is not really better, probably a bit worse, and the position has to be
>treated with extreme caution. Lesson for Vulcan for today: Don't exchange pieces
>when down! Don't exchange and especially don't sacrifice pieces yet when there
>is no clear advantage in sight! Be careful in sacrificing any pieces when the
>score is a bit plus, but is falling. Don't sac light or heavy pieces in a
>difficult ending, without being able to (or in this case not even taking the
>time to) calculate the resulting positions deeply enough, at least as deeply as
>possible under the given timeconstraints.
>
>[D]7r/1kpr1p2/1p4p1/p6n/3pPP1N/3P1K2/PP1R3P/6R1 w - - 2 1
Hi Eelco
CMX_SoFar3 likes Ng2 but thinks that black is a little better...
P3/850
Time Depth Score Positions Moves
0:00 1/3 -0.21 787 1.f5 Ng7 2.Rg4
---- ---- ---- ---- ----
0:00 1/3 -0.21 787 1.f5 Ng7 2.Rg4
0:00 1/4 -0.13 2254 1.f5 Nf6 2.Nxg6 fxg6 3.fxg6
0:00 1/5 -0.32 6532 1.f5 Nf6 2.Nxg6 fxg6 3.fxg6 Rh3+
4.Rg3 Rxg3+ 5.Kxg3
0:00 1/5 -0.29 7015 1.Ng2 Nf6 2.h4 c5 3.Rc2
0:00 1/6 -0.30 13740 1.Ng2 Nf6 2.h4 c5 3.Rc2 Kc6
0:00 1/7 -0.32 38846 1.Ng2 Nf6 2.h4 c5 3.Rc1 Kc6 4.Rdd1
0:01 2/8 -0.30 113107 1.Ng2 c5 2.h4 Kc6 3.Rc1 Ng7 4.Rdd1
Ne6
0:01 2/8 -0.17 178520 1.f5 Nf6 2.Kg3 g5 3.Nf3 g4 4.Ne5
Rh3+ 5.Kg2
0:05 2/9 0.00 578453 1.f5 Nf6 2.Kg3 Nh5+ 3.Kf3
0:09 2/10 -0.40 998290 1.f5 Nf6 2.Nxg6 fxg6 3.fxg6 Ne8
4.Rg4 Ng7 5.h4 Kc8 6.Rc2
0:11 2/10 -0.35 1269681 1.Ng2 c5 2.h4 Kc6 3.Rc1 Ng7 4.Rdd1
Ne6 5.Kg3 f6
0:26 3/11 -0.33 2823769 1.Ng2 c5 2.h4 Kc6 3.Rc1 Ng7 4.Kg3
f6 5.Ne1 Kc7 6.Nf3
1:29 3/12 -0.34 9535964 1.Ng2 c5 2.h4 Kc6 3.Rc1 Ng7 4.Rdd1
f6 5.Rh1 Ne6 6.f5 gxf5 7.exf5
2:04 3/12 -0.30 13494534 1.f5 Nf6 2.Nxg6 fxg6 3.fxg6 Rg7
4.Kf4 Nd7 5.Rg5 Rf8+ 6.Kg4 Re7
7.h4 Ne5+ 8.Kh3
3:27 3/13 -0.42 23114971 1.f5 Nf6 2.Kg3 g5 3.Nf3 g4 4.Ng5
Re7 5.h4 gxh3ep 6.Rh2 c5 7.Rxh3
4:46 3/13 -0.34 31218411 1.Ng2 c5 2.h4 Nf6 3.Rc1 Kc6 4.Rdd1
b5 5.Re1 Rdd8 6.Rg1 Rhe8 7.Ke2
Dan
>
>But what move to play then? I don't really know what is better. Gandalf expected
>30.f5 Nf6 31.Kg3 g5 32.Nf3 g4 33.Ng5 Rh5 34.Kf4 Rh4 35.Kg3 Rh5. in the game.
>
>Pro Deo 1.1 Default maybe does a bit better by playing 30.f5, but as in the main
>line the following move is still 31.Nxg6 I can't give it more than a B minus for
>effort. This main line would only be a transposition of the moves in the game.
>
>00:00:00.2 0,26 2 222 Nxg6 fxg6 Rxg6 c6
>00:00:00.2 0,47 3 883 Nxg6 fxg6 Rxg6 c6 Re2
>00:00:00.2 0,28 4 4027 Nxg6 fxg6 Rxg6 Rf7 f5 Re7
>00:00:00.2 0,43 5 14669 Nxg6 fxg6 Rxg6 Rf8 f5 Re7
>00:00:00.3 0,34 6 40080 Nxg6 fxg6 Rxg6 Rf7 f5 Re7 Re2 c6
>00:00:00.3 0,47 6 60727 f5 Ng7 Nxg6 fxg6 Rxg6 Re7 Kg4
>00:00:00.4 0,62 7 124485 f5 Nf6 Nxg6 fxg6 Rxg6 Rh3+ Kf4 Rh4+ Ke5 Ne8
>00:00:00.5 0,52 8 238564 f5 Nf6 Nxg6 fxg6 Rxg6 Rh3+ Kf4 Rh4+ Kg5 Nxe4+ dxe4 Rxe4
>h4
>00:00:00.8 0,52 9 621934 f5 Ng7 Nxg6 fxg6 Rxg6 c5 Kg4 Ne8 e5 Rdh7 Rf2 Rxh2
>00:00:01.6 0,45 10 1611664 f5 Nf6 Nxg6 fxg6 Rxg6 Rf7 Re2 Nd7 Kf4 Re7 Rf2
>00:00:03.1 0,25 11 3595798 f5 Nf6 Nxg6 fxg6 Rxg6 Rf7 Kf4 Nd7 Rdg2 Re7 R6g3 Rh4+
>Rg4 Rh3 R4g3 Rh4+ Rg4 Rh3 R4g3
>00:00:07.1 0,23 12 8907379 f5 Nf6 Nxg6 fxg6 Rxg6 Rf7 Kf4 Nd7 Re2 Re7 e5 Rh4+ Kg5
>Nxe5 Rxe5 Rxe5
>00:00:16.4 0,08 13 21219194 f5 Nf6 Nxg6 fxg6 Rxg6 Rf7 Kf4 Nd7 Rdg2 Re7 Rg7 Rh4+
>R2g4 Rxg7 Rxh4 c6
>00:01:01.7 0,07 14 79889931 f5 Nf6 Nxg6 fxg6 Rxg6 Rf7 Kf4 Rh4+ Ke5 Ng4+ Ke6 Rh8
>Kxf7 Ne5+ Ke6 Re8+ Kd5 Nf3
>00:01:06.5 0,07 14 86775202 Nxg6
>00:01:19.1 0,07 14 79889931 f5 Nf6 Nxg6 fxg6 Rxg6 Rf7 Kf4 Rh4+ Ke5 Ng4+ Ke6 Rh8
>Kxf7 Ne5+ Ke6 Re8+ Kd5 Nf3
>00:03:09.6 0,07 15 249745319 f5 Nf6 Nxg6 fxg6 Rxg6 Rf7 Rdg2
>00:07:54.6 0,00 16 634419156 f5 Nf6 Nxg6 fxg6 fxg6 Rh3+ Kf4 Nh7
>00:35:52.4 0,00 17 2840425533 f5 Nf6 Nxg6 fxg6 Rxg6 Re7 Rxf6 Rh4
>
>
>After 30.Nxg6? White quickly lost ground and could have capitulated before move
>49 when the game ended.
>
>
>after 49.Kf3
>
>
>[D]4r3/2R1P3/1p3k2/2n5/1p6/3p1K2/P7/8 b - - 1 1
>
>Gandalf started calculating now very long and deep to make sure nothing could go
>wrong after taking the pawn with 49..Rxe7, but finally concluded that a score of
>-28.67 pawns for White was safe enough to risk it.. This was also far below the
>score treshold of course, so here this game was ended.
>
>[Event "Tournament test Vulcan {9k9i}"]
>[Site "Groningen"]
>[Date "2005.07.19"]
>[Round "1.2"]
>[White "Pro Deo 1.1 - Vulcan {9k9i}"]
>[Black "Gandalf 6.01"]
>[ECO "C68"]
>[Result "0-1"]
>
>1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. d4 exd4
>6. Qxd4 Qxd4 7. Nxd4 Nf6 8. f3 c5 9. Ne2 Bd7 10. O-O O-O-O
>11. Nbc3 Be6 12. Be3 Bd6 13. Rad1 Rd7 14. Nf4 Bc4 15. Nd3
>Bxd3 16. cxd3 Rhd8 17. Rd2 b6 18. Rfd1 h6 19. Ne2 Nh5
>20. g4 Nf6 21. Kg2 a5 22. Ng3 Be5 23. Nf5 Kb7 24. f4 Bd4
>25. Bxd4 cxd4 26. Kf3 h5 27. gxh5 Nxh5 28. Rg1 g6 29. Nh4
>Rh8 30. Nxg6 fxg6 31. Rxg6 Rf7 32. f5 Nf6 33. Kf4 Nd7
>34. Rdg2 Rfh7 35. e5 Nc5 36. R6g3 Kc6 37. b4 axb4 38. h3
>Rxh3 39. Rxh3 Rxh3 40. e6 Kd6 41. Rg8 Nxd3+ 42. Kg4 Rh7
>43. Rd8+ Ke5 44. Rd7 Rh8 45. e7 Re8 46. Rxc7 Nc5 47. f6
>Kxf6 48. Kg3 d3 49. Kf3 Rxe7 0-1
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