Author: Uri Blass
Date: 07:26:36 11/13/05
Go up one level in this thread
On November 13, 2005 at 10:05:43, Günther Simon wrote:
>On November 13, 2005 at 09:03:16, John Jack wrote:
>
>>[Event "Blitz:10 min
>>[Site "New York"]
>>[Date "2005.11.13"]
>>[Round 3
>>[White "Fritz 9
>>[Black "Fruit 2.2.1
>>[Result 1-0
>>[ECO "D42"]
>>[WhiteElo "2750"]
>>[BlackElo "2785"]
>>[Annotator "Fruit 2.2.1 (5s)"]
>>[PlyCount "108"]
>>
>> {D42: Queen's Gambit Declined: Semi-Tarrasch: 5 cxd5 Nxd5 6 e3 Nc6 7 Bd3} 1. d4
>>Nf6 2. c4 e6 3. Nc3 d5 4. Nf3 c5 5. cxd5 Nxd5 6. e3 Nc6 7. Bd3 Be7 8. O-O O-O 9.
>>a3 cxd4 10. exd4 Bf6 11. Be4 g6 (11... Nc7 12. Qd3 g6 13. Bh6 Bg7 14. Bxg7
>>Kxg7 15. Rfe1 {1/2-1/2 Lukacs,P (2465)-Polgar,Z (2510)/Lillafured 1989/TD}) (
>>11... Re8 12. Re1 Nde7 13. Be3 Nf5 14. Bxf5 exf5 15. d5 Ne5 16. Nxe5 Bxe5 17.
>>Bd4 Bd6 18. Qb3 b6 19. Nb5 Rxe1+ 20. Rxe1 Bb7 21. Nxa7 Bc7 22. Nb5 Bxd5 23. Qe3
>>h6 24. Nxc7 Qxc7 25. Bxb6 Qb7 26. Bd4
>>{Naes,F (2257)-Thiruchelvam,M (2235)/Budapest 2000/CBM 075 ext/1-0 (33)}) (11...
>>h6 12. Bc2 Nde7 13. Qd3 Ng6 14. Rd1 Qa5 15. Ne4 Be7 16. Bd2 Qc7 17. Rac1 Rd8 18.
>>Be3 Bd7 19. h4 f5 20. Nc3 Be8 21. Bb3 Bf7 22. g3 Bf6 23. d5 Nce5 24. Qe2 Qe7 25.
>>Nxe5 Bxe5 26. h5 {Loemker,A-Seegers,H (2350)/Germany 1992/TD/1-0 (36)}) 12. Bh6
>>Re8 13. Qd2 Nxc3 14. bxc3 e5 15. Bxc6 bxc6 16. Rfe1 exd4 17. Rxe8+ Qxe8 18. Re1
>>Qd8 19. cxd4 Rb8 20. Qc3 Be6 21. Qxc6 Bd5 22. Qc3 Bxf3 23. Qxf3 Bxd4 24. Qf4 Bc3
>>25. Rf1 Rb2 26. Qa4 Qb8 27. Bf4 Qb5 28. Qe4 Qd7 29. Rc1 Bd4 30. Kh1 Bf6 31. h3
>>a5?? {throwing away the advantage} (31... h5 {and Black can hope to live}
>>32. Be3 Be7 32. Qa8+ Kg7 33. Rc8 (33. Qxa5 {is much weaker} 33... Rxf2
>>34. Be5 Qf5 35. Bxf6+ Qxf6 $15) 33... h6 (33... Rb1+ 34. Kh2 Be7 35.
>>Rg8+ Kf6 34. Rh8 Bd4 35. Bxh6+ Kf6 36. Rd8 Rb1+ 37. Kh2 Qc7+ 38. g3 Be5 39.
>>Qf3+ Ke7 40. Rf8 Bxg3+ 41. Kg2 Qc4 42. Qe3+ (42. Qxg3 $2
>>{seems attractive but will lead to severe problems} 42... Qf1+ 43. Kf3 Qd1+ 44.
>>Ke4 Qc2+ 45. Kf3 Rb3+ 46. Be3 Qc6+ (46... Kxf8 47. Qd6+ Ke8 48. Qe5+ Kd7 49.
>>Qd5+ Ke7 50. Qe5+ Kd8 51. Qd5+ Kc8 52. Qa8+ Kc7 53. Qxa5+ Kd7 54. Qd5+ Ke7 55.
>>Qe5+ Kf8 56. Qh8+ Ke7 57. Qe5+ Kd8 58. Qd5+ Ke8 59. Qe5+ Kd7 60. Qd5+ Kc8 61.
>>Qa8+ Rb8 62. Qa6+ Rb7 63. Qa8+ Kc7 64. Bf4+ Kb6 65. Be3+ Kc7 66. Bf4+ Kb6 67.
>>Be3+ Kc7 $11) 47. Kg4 Qe6+ 48. Kh4 Kxf8 $19) (42. fxg3
>>{allows the opponent a nice mating combination} 42... Qc2+ 43. Qf2 Qe4+ 44. Qf3
>>Rb2+ 45. Bd2 Rxd2+ 46. Kg1 Qe1+ 47. Qf1 Qxg3+ 48. Kh1 Qh2#) 42... Qe6 43. Qa7+ (
>>43. Kxg3 {looks interesting, but} 43... Rb3 44. Rg8 Rxe3+ 45. fxe3 Qd6+ 46.
>>Kg2 Ke6 ) 43... Kd6 44. Rd8+ (44. fxg3 $4
>>{is impossible because of the following mate in 4} 44... Qe4+ 45. Kf2 Rb2+ 46.
>>Bd2 Rxd2+ 47. Kg1 Qb1#) (44. Kxg3 $6 {is no comparison} 44... Rg1+ 45. Kh2 Rh1+
>>46. Kxh1 Qxh3+ 47. Kg1 Qg4+ 48. Kh2 Qh4+ 49. Kg2 Qg4+ 50. Kf1 Qd1+ 51. Kg2 Qg4+
>>52. Kf1 Qd1+ 53. Kg2 Qg4+ $11) 44... Kc6 45. Qa8+ (45. fxg3 $4
>>{capturing the bishop would seal White's fate} 45... Qe4+ 46. Kf2 Qe1+ 47. Kf3
>>Rb3+ 48. Qe3 Qf1+ 49. Ke4 Qf5+ 50. Kd4 Qc5+ 51. Ke4 Rxe3+ 52. Bxe3 Qf5+ 53. Kd4
>>Qf6+ 54. Ke4 Qxd8 $19) 45... Kc7 46. Bd2 (46. Kxg3 $6
>>{is the less attractive alternative} 46... Rb3+ 47. Be3 Rxe3+ 48. fxe3 Qxe3+ 49.
>>Kh2 Qf4+ 50. Kh1 Qf1+ 51. Kh2 Qf4+ 52. Kh1 Qf1+ 53. Kh2 Qf4+ $11) 46... Qc6+ 47.
>>Qxc6+ (47. Kxg3 $6 Rg1+ 48. Kf4 Qf6+ 49. Ke4 Qf5+ 50. Kd4 Qf6+ 51. Kc4 Qc6+ 52.
>>Qxc6+ Kxc6 $18) 47... Kxc6 48. fxg3 ({Worse is} 48. Kxg3 Rb3+ 49. Be3 a4 $18)
>>48... Rb3 49. Bc1 a4 (49... Rb1 {cannot change destiny} 50. h4 $18) 50. g4 Rb7 (
>>50... Kb5 {a fruitless try to alter the course of the game} 51. h4 Rc3 52. Bb2
>> 51. h4 Rb5 52. Ra8 Rb1 53. Bg5 Rb2+ 54. Kf1 Kd5 (54... Kd5 55. Rxa4 Rh2 $18
>>) 1-0
>>
>>20: Fritz 9 - Fruit 2.2.1, Blitz:10 New York
>>[D]6k1/p2q1p1p/5bp1/8/4QB2/P6P/1r3PP1/2R4K b - - 0 1
>>
>>Analysis by Fruit 2.2.1:
>>
>>31...Rxf2 32.Qa8+ Bd8
>> µ (-0.75) Depth: 1/5 00:00:00
>>31...Rxf2 32.Qa8+ Bd8
>> µ (-0.75) Depth: 3/11 00:00:00
>>31...Rxf2 32.Rb1 Qc8
>> ³ (-0.70) Depth: 3/11 00:00:00
>>31...Rxf2 32.Qa8+ Kg7 33.Be3 Rb2
>> µ (-0.89) Depth: 4/12 00:00:00
>>31...Rxf2 32.Rb1 Ra2 33.Qa8+ Kg7 34.Rb7 Qd1+ 35.Kh2 Rxa3 36.Rxa7
>> µ (-0.87) Depth: 5/15 00:00:00
>>31...Rxf2 32.Bh6 Rb2 33.Rf1 Qe7 34.Qa8+ Qd8 35.Qxa7
>> ³ (-0.54) Depth: 6/16 00:00:00 11kN
>>31...Rxf2 32.Bh6 Rb2 33.Qa8+ Bd8 34.Bg5 f6 35.Bxf6
>> = (-0.24) Depth: 7/16 00:00:00 15kN
>>31...Rxf2 32.Bh6 Rd2 33.Bxd2 Qxd2 34.Rf1 Kg7 35.Qb7 Qe2
>> ± (0.96) Depth: 8/18 00:00:00 28kN
>>31...a5 32.Rc7 Qe6 33.Bh6 Bd8 34.Qxe6 fxe6 35.Rg7+ Kh8 36.Rd7
>> = (0.17) Depth: 8/24 00:00:00 80kN
>>31...a6 32.Qa8+ Kg7 33.Rc8 h5 34.Rh8 Bd4 35.Bh6+ Kf6 36.Qf3+ Qf5 37.Qc6+ Qe6
>> = (0.14) Depth: 8/24 00:00:00 103kN
>>31...h5 32.Be3 Rb3 33.a4 Rb2 34.Qa8+ Kg7 35.Qxa7 Qxa7 36.Bxa7
>> = (0.01) Depth: 8/24 00:00:00 125kN
>>31...Qd8 32.Bh6 Bg7 33.Be3 a5 34.Kg1 Bf6 35.Bf4
>> = (-0.07) Depth: 8/24 00:00:00 181kN
>>31...Qd8 32.Rc7 Rxf2 33.Qc4 Qe8 34.Rc8 Bd8 35.Qc7 Rf1+ 36.Kh2 Rd1 37.Qxa7
>> = (-0.04) Depth: 9/25 00:00:00 238kN
>>31...Qd8 32.Rc7 Qd1+ 33.Kh2 Re2 34.Qa8+ Bd8 35.Rc8 Re8 36.Qxa7 Re2 37.a4
>> ² (0.55) Depth: 10/35 00:00:00 409kN
>>31...h5 32.Be3 Rb3 33.a4 Ra3 34.Qf4 Kg7 35.Qh6+ Kg8 36.Qf4
>> = (0.00) Depth: 10/35 00:00:00 453kN
>>31...h5 32.Be3 Rb3 33.a4 Ra3 34.Qf4 Kg7 35.Qh6+ Kg8 36.Qf4
>> = (0.00) Depth: 11/35 00:00:00 550kN
>>31...h5 32.Rc6 Re2 33.Qc4 Re1+ 34.Kh2 Qd4 35.Be3 Qa1 36.g3 Rh1+ 37.Kg2 Qg1+
>>38.Kf3 Qd1+ 39.Kg2 Qg1+
>> = (0.00) Depth: 12/35 00:00:01 1193kN
>>31...h5 32.Be3 Rb3 33.a4 Ra3 34.Rc4 Ra1+ 35.Kh2 Rd1 36.Qa8+ Kg7 37.Qxa7 Be5+
>>38.f4 Qe6 39.Rc2
>> = (0.07) Depth: 13/39 00:00:16 10794kN
>>31...h5 32.Be3 Rb3 33.a4 Ra3 34.Rc6 Be5 35.Rc1 Bf6
>> = (0.00) Depth: 14/42 00:00:50 33345kN
>>
>>Fruit2.2.1 in the game played ...a5??. Longer time control it plays ...h5
>>
>
>ahem, longer than 0.00sec ??
>
>
>Guenther
Note that fruit does not clear the hash between moves so it may need longer time
in game relative to analysis.
Without analysis of this specific position
I saw cases when fruit needs longer time to avoid error in game conditions
relative to analysis with clear hash.
It seems that hash tables is not always productive(maybe because of history
based pruning).
Note that even in the analysis that was posted fruit needs 103 knodes to avoid
the error and fruit searches only 600-700 knodes per second on the relevant
hardware so it is more than 0.1 seconds(fruit does not write times that are
smaller than 1 second so you cannot see it in the analysis).
Uri
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