Author: Dann Corbit
Date: 17:21:39 05/22/01
Go up one level in this thread
On May 22, 2001 at 07:18:23, Jarkko Pesonen wrote:
>[D] 7k/pB6/8/2P1p1p1/1P6/P7/5r1P/7K b - -
>
>Is this position lost for Black if
>it doesn't choose Kg7 or Kg8 to get
>Kd6 as soon as possible ?
>
>Any comments?
>
>Yace - Crafty ended in this position.
>Both tought that Black was in better position
>and wanted to play 30. .. Ra2 or 30. .. Rc2
>Black lost in the end.
>
>(Intel 350MHz)
>Crafty
>14 3:02 -0.81 1. ... Ra2 2. c6 Rc2 3. Kg1 e4 4. Kf1
> e3 5. Ke1 Kg7 6. Kd1 e2+ 7. Ke1 Kf6
> 8. Ba6 Ke5 9. Bxe2 Rxc6
>yace
>19649046 1:34.9 0.61 14u. 1...Rc2 2.c6 e4 3.Kg1 Kg7 4.b5 e3 5.Kf1 Kf6
> 6.Ke1 Ke5 7.h3 {HT} {70}
>
>[Event "Computer chess game"]
>[Site ""]
>[Date "2001.05.22"]
>[Round "-"]
>[White "Yace 0.99.01"]
>[Black "wcrafty"]
>[Result "1-0"]
>[TimeControl "1200+10"]
>[FEN "r1bqnrk1/ppp1npbp/3p2p1/3Pp3/2P1P3/2N1B3/PP2BPPP/R2QNRK1 b - - 0 1"]
>[SetUp "1"]
>
>{--------------
>r . b q n r k .
>p p p . n p b p
>. . . p . . p .
>. . . P p . . .
>. . P . P . . .
>. . N . B . . .
>P P . . B P P P
>R . . Q N R K .
>black to play
>--------------}
>1... f5 2. Nf3 Nf6 3. Ng5 h6 4. Nf3 Nxe4 5. Nxe4 fxe4 6. Nd2 Nf5 7. Nxe4
>Qh4 8. Bf3 Nxe3 9. fxe3 Bf5 10. g3 Qe7 11. Kh1 Rf7 12. Qe2 Raf8 13. b4 Qd7
>14. a3 Bh3 15. Rf2 Bf5 16. Rff1 Kh8 17. c5 Bh3 18. Rf2 c6 19. Rg1 cxd5 20.
>Nxd6 Rf6 21. e4 g5 22. g4 h5 23. Nf5 dxe4 24. Bxe4 Bxg4 25. Rxg4 hxg4 26.
>Qxg4 Bh6 27. Nxh6 Qxg4 28. Nxg4 Rxf2 29. Nxf2 Rxf2 30. Bxb7 Ra2 31. c6 Rc2
>32. Kg1 e4 33. b5 e3 34. Kf1 Rf2+ 35. Ke1 Rc2 36. a4 Kg7 37. a5 Kf6 38. b6
>axb6 39. a6 Rc1+ 40. Ke2 Ke5 41. a7 Ra1 42. c7 Rxa7 43. c8=Q Ra2+ 44. Kxe3
>Ra3+ 45. Ke2 Ra2+ 46. Kf3 Ra3+ 47. Kg4 Ra5 48. Qc7+ Kd4 49. Qxb6+ Kd3 50.
>Qxa5 Kc2 51. h4 Kd3 52. hxg5 Kc2
>{Black resigns} 1-0
A very interesting position. Crafty won't give up Ra2 even after a very deep
search. Which begs the question, will Kg7 really fare better?
EPD Kit revision date: 1996.04.21
unable to open book file [e:\crafty\release/books.bin].
hash table memory = 96M bytes.
pawn hash table memory = 10M bytes.
EGTB cache memory = 64M bytes.
draw score set to 0.00 pawns.
choose from book moves randomly (using weights.)
choose from 5 best moves.
book learning enabled
result learning enabled
position learning enabled
threshold set to 9 pawns.
5 piece tablebase files found
20258kb of RAM used for TB indices and decompression tables
Crafty v18.9
White(1): st 999
search time set to 999.00.
White(1): epdpfga eg.epd eg.out
PFGA: EPD record: 1
end-game phase
clearing hash tables
time surplus 0.00 time limit 16:39 (16:39)
nss depth time score variation (1)
8-> 0.37 0.07 1. ... Kg7 2. Kg1 Rc2 3. Bg2 Ra2 4.
c6 Ra1+ 5. Kf2 Rxa3
9 0.51 -0.17 1. ... Kg7 2. Kg1 Rc2 3. Be4 Re2 4.
Bf3 Ra2 5. c6 Rxa3
9-> 0.63 -0.17 1. ... Kg7 2. Kg1 Rc2 3. Be4 Re2 4.
Bf3 Ra2 5. c6 Rxa3
10 0.83 -0.05 1. ... Kg7 2. Kg1 Rc2 3. Be4 Re2 4.
Bf3 Ra2 5. c6 Kf6 6. b5 Rxa3
10 2.02 -0.42 1. ... Ra2 2. Kg1 Rxa3 3. c6 Rc3 4.
Kg2 Rc2+ 5. Kf3 Kg7 6. h3 Kf6
10-> 2.34 -0.42 1. ... Ra2 2. Kg1 Rxa3 3. c6 Rc3 4.
Kg2 Rc2+ 5. Kf3 Kg7 6. h3 Kf6
11 3.26 -0.64 1. ... Ra2 2. Kg1 Rxa3 3. c6 Rc3 4.
b5 Rc2 5. Bc8 Rb2 6. Ba6 e4
11-> 4.46 -0.64 1. ... Ra2 2. Kg1 Rxa3 3. c6 Rc3 4.
b5 Rc2 5. Bc8 Rb2 6. Ba6 e4
12 6.14 -0.69 1. ... Ra2 2. Kg1 Rxa3 3. c6 Rc3 4.
Kf2 e4 5. b5 e3+ 6. Ke2 Kg7 7. Bc8
Kf6
12-> 11.26 -0.69 1. ... Ra2 2. Kg1 Rxa3 3. c6 Rc3 4.
Kf2 e4 5. b5 e3+ 6. Ke2 Kg7 7. Bc8
Kf6
13 14.18 -0.74 1. ... Ra2 2. Kg1 Rxa3 3. c6 Rc3 4.
Kf2 a6 5. Ke2 e4 6. Kd2 Rc4 7. Ke2
Kg7
13-> 24.95 -0.74 1. ... Ra2 2. Kg1 Rxa3 3. c6 Rc3 4.
Kf2 a6 5. Ke2 e4 6. Kd2 Rc4 7. Ke2
Kg7
14 38.06 -0.81 1. ... Ra2 2. c6 Rc2 3. Kg1 e4 4. Kf1
e3 5. Ke1 Kg7 6. Kd1 e2+ 7. Ke1 Kf6
8. Ba6 Ke5 9. Bxe2 Rxc6
14-> 1:09 -0.81 1. ... Ra2 2. c6 Rc2 3. Kg1 e4 4. Kf1
e3 5. Ke1 Kg7 6. Kd1 e2+ 7. Ke1 Kf6
8. Ba6 Ke5 9. Bxe2 Rxc6
15 1:30 -0.74 1. ... Ra2 2. c6 Rc2 3. Kg1 e4 4. Kf1
e3 5. Ke1 Kg7 6. Kd1 e2+ 7. Ke1 Kf6
8. Ba6 Ke5 9. c7 Rxc7 10. Kxe2
15-> 3:06 -0.74 1. ... Ra2 2. c6 Rc2 3. Kg1 e4 4. Kf1
e3 5. Ke1 Kg7 6. Kd1 e2+ 7. Ke1 Kf6
8. Ba6 Ke5 9. c7 Rxc7 10. Kxe2
16 4:36 -0.89 1. ... Ra2 2. c6 Rc2 3. Kg1 e4 4. Kf1
e3 5. Ke1 Kg7 6. Kd1 e2+ 7. Ke1 Kf6
8. a4 Ke5 9. Ba6 Kd5 10. Bxe2 Kxc6
16-> 8:45 -0.89 1. ... Ra2 2. c6 Rc2 3. Kg1 e4 4. Kf1
e3 5. Ke1 Kg7 6. Kd1 e2+ 7. Ke1 Kf6
8. a4 Ke5 9. Ba6 Kd5 10. Bxe2 Kxc6
17 11:24 -0.77 1. ... Ra2 2. c6 Rc2 3. Kg1 e4 4. Kf1
e3 5. Ke1 Kg7 6. Kd1 e2+ 7. Ke1 Kf6
8. Ba6 Rxc6 9. Bxe2 Rc2 10. Kf2
time=16:39 cpu=99% mat=-1 n=610753191 fh=88% nps=611k
ext-> chk=29776119 cap=432697 pp=5558638 1rep=1015154 mate=42479
predicted=0 nodes=610753191 evals=151538428
endgame tablebase-> probes done=2131 successful=2131
Black(1):
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.