Author: John Merlino
Date: 22:01:53 07/25/03
Go up one level in this thread
On July 25, 2003 at 20:33:49, Omid David Tabibi wrote:
>>[Event "7"]
>>[Site "S"]
>>[Date "2008.07.23"]
>>[Round "12"]
>>[White "Junior 8"]
>>[Black "Ktulu 3.7"]
>>[Result "0-1"]
>>[ECO "D12"]
>>[PlyCount "110"]
>>[EventDate "2008.07.17"]
>>[Source "a"]
>>
>>1. c4 {0} 1... c6 {0} 2. Nf3 {0} 2... d5 {0} 3. e3 {0} 3... Nf6 {0} 4. d4 {0}
>>4... Bf5 {0} 5. Qb3 {0} 5... Qc7 {0} 6. cxd5 {0.11/17 224} 6... cxd5 {0} 7. Nc3
>>{0} 7... e6 {0} 8. Bd2 {0} 8... Nc6 {0} 9. Be2 {0} 9... Be7 {0} 10. O-O {0}
>>10... O-O {0} 11. Rfc1 {0} 11... Nd7 {-0.15/12 158} 12. a3 {-0.35/17 96} 12...
>>Rac8 {(a6) -0.19/12 101} 13. Na2 {(Qd1) -0.29/17 99} 13... Bd6 {
>>(Nf6) -0.20/11 98} 14. Bb4 {(Nc3) -0.20/17 85} 14... Qb6 {-0.27/12 96} 15. Nc3
>>{(Nh4) -0.20/16 214} 15... Bxb4 {-0.66/11 93} 16. axb4 {-0.31/17 130} 16...
>>Nxb4 {-0.67/13 90} 17. Na4 {(Qa4) -0.28/17 118} 17... Rxc1+ {-0.57/13 88} 18.
>>Rxc1 {-0.35/18 115} 18... Qa5 {-0.65/14 85} 19. Bf1 {-0.23/18 76} 19... a6 {
>>(b6) -0.57/13 83} 20. Nc5 {-0.16/18 94} 20... Nxc5 {-0.54/15 81} 21. Rxc5 {
>>-0.23/17 27} 21... Qb6 {-0.53/14 78} 22. Ne5 {-0.18/19 101} 22... Rd8 {
>>-0.51/15 76} 23. Bd3 {-0.18/17 55} 23... Bxd3 {-0.21/15 74} 24. Nxd3 {
>>-0.02/17 20} 24... a5 {-0.25/15 72} 25. Nxb4 {-0.02/19 51} 25... axb4 {
>>-0.21/15 70} 26. h3 {0.03/20 69} 26... f6 {(h5) -0.18/15 68} 27. Qa4 {
>>0.22/19 41} 27... Kf7 {(h6) -0.16/14 66} 28. g4 {(Qc2) 0.26/18 56} 28... Qd6 {
>>-0.16/13 64} 29. Rb5 {(Kg2) 0.26/18 54} 29... Rd7 {-0.15/14 63} 30. Rxb4 {
>>(Qxb4) 0.27/20 83} 30... Rc7 {-0.08/14 61} 31. Qa5 {(Qb3) 0.24/19 99} 31... g5
>>{(Qd7) -0.25/12 59} 32. Rb6 {0.70/18 50} 32... Qd7 {(Qf8) -0.14/14 58} 33. Qa8
>>{(Qd2) 0.68/19 36} 33... Kg7 {-0.04/14 56} 34. Kh2 {(Kg2) 0.81/19 59} 34... Qf7
>>{(e5) -0.13/13 54} 35. Kg2 {(Qb8) 0.81/19 46} 35... Rd7 {(Qd7) -0.05/13 53} 36.
>>Qc8 {(f3) 0.94/19 33} 36... Qe7 {(h6) -0.01/13 52} 37. Kg1 {0.81/18 31} 37...
>>Qf7 {(e5) -0.04/13 50} 38. Qb8 {0.85/19 63} 38... Qe7 {-0.13/14 49} 39. Kg2 {
>>0.94/19 53} 39... e5 {(Qf7) -0.03/14 47} 40. dxe5 {0.53/17 46} 40... fxe5 {
>>0.00/15 46} 41. Rb5 {0.66/17 82} 41... e4 {(h6) 0.00/15 45} 42. Qa7 {0.93/17 26
>>} 42... Kf7 {(Qf7) 0.01/1 44} 43. Qd4 {1.18/18 71} 43... Qf6 {(Ke6) 0.49/16 142
>>} 44. Rxb7 {1.78/16 25} 44... Qxd4 {0.08/19 38} 45. Rxd7+ {0.45/20 42} 45...
>>Ke8 {0.08/20 37} 46. exd4 {0.36/20 31} 46... Kxd7 {0.01/1 36} 47. h4 {
>>0.20/26 26} 47... h6 {(gxh4) 0.04/19 35} 48. h5 {(Kg3) 0.00/25 35} 48... Kc6 {
>>0.00/23 34}
>
>[D]8/8/2k4p/3p2pP/3Pp1P1/8/1P3PK1/8 w - - 0 49
>
>>49. Kg3
>
>??
>How could Junior possibly play this move? Any engine I tried refutes 49. Kg3 in
>less than a second... The obvious move 49. f3 reaches an easy draw.
The loss might be tough to see at faster time controls, as the loss of the pawn
is 20 plies away.
Chessmaster 9000, for example, on a P4-2.44, fails low on Kg3 in about 15
seconds, but needs 1:11 to show a losing eval. It then needs to go to almost two
full minutes of total search before it switches to Kf1 with a drawing score:
Time Depth Score Positions Moves
0:00 9/13 0.32 82071 49.Kg3 Kb5 50.f4 exf3ep 51.Kxf3
Kc4 52.Ke3 Kb3 53.Ke2 Kxb2 54.Kd2
Kb3 55.Kd3 Kb4
0:00 10/14 0.32 139009 49.Kg3 Kb5 50.f4 exf3ep 51.Kxf3
Kc4 52.Ke3 Kb3 53.Ke2 Kxb2 54.Kd2
Kb3 55.Kd3 Kb4
0:00 11/15 0.08 247311 49.Kg3 Kb5 50.f4 exf3ep 51.Kxf3
Kc4 52.Ke3 Kb3 53.Ke2 Kxb2 54.Kd2
Kb3 55.Kd3 Kb4 56.Ke3 Kc4
0:01 12/16 0.08 419177 49.Kg3 Kb5 50.f4 exf3ep 51.Kxf3
Kc4 52.Ke3 Kb3 53.Ke2 Kxb2 54.Kd2
Kb3 55.Kd3 Kb4 56.Ke3 Kc4
0:02 13/17 0.04 750094 49.Kg3 Kb5 50.f4 exf3ep 51.Kxf3
Kc4 52.Ke3 Kb3 53.Ke2 Kxb2 54.Kd2
Kb3 55.Kd3 Kb4 56.Ke2 Kc4 57.Ke3
0:05 14/18 0.00 1357606 49.Kg3 Kb5 50.f4 exf3ep 51.Kxf3
Kc4 52.Ke3 Kb3 53.Ke2 Kxb2 54.Kd2
Kb3 55.Kd3 Kb4 56.Kd2 Kb3
0:09 15/19 0.00 2510018 49.Kg3 Kb5 50.f4 exf3ep 51.Kxf3
Kc4 52.Ke3 Kb3 53.Ke2 Kxb2 54.Kd2
Kb3 55.Kd3 Kb4 56.Kd2 Kb5 57.Kc3
Ka4 58.Kd2 Kb5
1:11 16/20 -2.37 15935155 49.Kg3 Kb5 50.f4 exf3ep 51.Kxf3
Kc4 52.Ke3 Kb3 53.Ke2 Kxb2 54.Kd2
Kb3 55.Kd3 Kb4 56.Ke3 Kc4 57.Ke2
Kxd4 58.Kd2 Ke4 59.Kc3
1:57 16/20 0.00 26201737 49.Kf1 Kb5 50.Ke2 Kc4 51.Kd1 Kxd4
52.Ke2 Ke5 53.f3 exf3+ 54.Kxf3
Kd4 55.Ke2 Ke4 56.Kd2 Kd4 57.Ke2
1:59 17/21 0.00 26834298 49.Kf1 Kb5 50.Ke2 Kc4 51.Kd1 Kxd4
52.Ke2 Ke5 53.f3 exf3+ 54.Kxf3
Kd4 55.Ke2 Ke4 56.Kd2 Kd4 57.Ke2
2:07 18/22 0.00 28939522 49.Kf1 Kb5 50.Ke2 Kc4 51.Kd1 Kxd4
52.Ke2 Ke5 53.f3 exf3+ 54.Kxf3
Kd4 55.Ke2 Ke4 56.Kd2 Kd4 57.Ke2
2:31 19/23 0.00 34612451 49.Kf1 Kb5 50.Ke2 Kc4 51.Kd1 Kxd4
52.Ke2 Ke5 53.f3 exf3+ 54.Kxf3
Kd4 55.Ke2 Ke4 56.Kd2 Kd4 57.Ke2
jm
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