Author: Robert Hyatt
Date: 17:12:39 08/22/02
Go up one level in this thread
On August 22, 2002 at 17:49:01, Sune Larsson wrote:
>
> [D]8/2p2k2/pp4p1/2p3P1/P1P2P2/1P2R2r/5K2/8 b - - 0 14
>
> This position is from the game Yace-Junior 7. Here Junior saw
> some opposition with the kings on e6-e4 or e6-g4 and evaluated
> the pawn ending as a draw. Black played 14.-Rxe3?? and lost it
> since white can force a passer on the k-side and then go eat the
> pawns on the q-side.
>
> Test: Avoid the move 14.-Rxe3?? for black. 14.-Rh1 or similar is okey.
>
This takes a bit longer. Rxe3 produces a score of almost 0 until depth 15
where it starts to rise a bit to +.22... at this point, Crafty then decides
that trading rooks is bad and it likes various other moves better. Rh1 is
the first move to replace Re3, with a score of .21, just _barely_ lower
from black's perspective. It takes about 45 seconds to find this however,
on my quad 700. depth=15 is the point...
> The whole game:
>
>
>[Event "Nunn1 40/60'"]
>[Site "Kil"]
>[Date "2002.08.20"]
>[Round "2"]
>[White "Yace 0.99.56"]
>[Black "Junior 7"]
>[Result "1-0"]
>[SetUp "1"]
>[FEN "8/1ppr1kp1/p1p4p/8/8/5P2/PPP1RKPP/8 w - - 0 1"]
>[PlyCount "79"]
>[EventDate "2002.??.??"]
>
>{W=14.9 ply; 533kN/s
>B=28.4 ply; 598kN/s; 710 764 TBAs
>} 1. f4 {0.27/13 180}
>1... h5 {0.13/19 93} 2. h3 {(Kf3) 0.27/13 154} 2... Rd1 {(b5) 0.00/19 71} 3. g4
>{0.26/12 137} 3... g6 {(h4) 0.00/19 133} 4. Kg3 {(a3) 0.30/11 60} 4... Rg1+ {
>(Kf6) 0.00/18 162} 5. Kh4 {(Kf3) 0.30/14 102} 5... hxg4 {0.00/20 80} 6. hxg4 {
>0.31/14 77} 6... Kf6 {0.00/20 75} 7. b3 {0.31/13 44} 7... b6 {
>(Rh1+) 0.00/20 115} 8. c4 {(a4) 0.31/13 86} 8... c5 {(Rh1+) 0.00/20 100} 9. Re5
>{0.30/13 47} 9... Rf1 {(Rh1+) 0.00/20 99} 10. g5+ {(Kg3) 0.28/14 64} 10... Kf7
>{0.00/22 132} 11. Kg3 {0.27/14 58} 11... Rg1+ {(Rc1) 0.00/21 180} 12. Kf2 {
>0.23/15 89} 12... Rh1 {(Rc1) 0.00/22 259} 13. a4 {(Kg2) 0.12/14 61} 13... Rh3 {
>(Rb1) 0.05/22 82} 14. Re3 {0.31/14 90} 14... Rxe3 $4 {(Rh1) 0.00/23 87} 15.
>Kxe3 {0.61/14 50} 15... Ke6 {(Ke7) 0.00/32 49} 16. Ke4 {(Kf2) 0.60/15 92} 16...
>c6 {(a5) 0.00/32 75} 17. Ke3 {(Kd3) 0.63/14 66} 17... Kd7 {(Ke7) 0.00/33 63}
>18. Ke2 {(Ke4) 0.61/15 60} 18... Ke6 {(Kd6) 0.00/34 66} 19. Kf2 {
>(Kd3) 0.64/16 90} 19... Kf7 {(Kd6) 0.00/34 50} 20. Kg3 {(Kf3) 0.62/16 80} 20...
>Ke7 {0.16/32 52} 21. Kh3 {0.66/15 90} 21... Kd6 {(Kd7) 1.04/33 174} 22. Kh4 {
>(f5) 1.26/15 52} 22... b5 {(Ke7) 1.04/28 63} 23. f5 {(Kg4) 2.15/13 69} 23...
>Ke7 {(gxf5) 1.94/28 165} 24. Kg4 {(fxg6) 6.69/12 63} 24... Kf7 {2.18/29 89} 25.
>fxg6+ {(a5) 8.49/13 102} 25... Kxg6 {4.66/32 152} 26. Kf4 {11.20/17 102} 26...
>b4 {6.62/33 129} 27. a5 {15.08/19 75} 27... Kf7 {9.53/42 83} 28. Ke5 {
>18.88/18 52} 28... Kg6 {12.02/41 360} 29. Kd6 {20.28/17 68} 29... Kf5 {
>(Kf7) #14/31 29} 30. Kxc6 {(g6) 22.39/17 112} 30... Ke6 {(Kxg5) #14/29 29} 31.
>g6 {#41/17 79} 31... Ke7 {(Kf6) #14/28 38} 32. Kxc5 {(g7) #25/17 70} 32... Kf6
>{#14/32 65} 33. Kd6 {(g7) #21/16 94} 33... Kg7 {#10/30 20} 34. c5 {#11/20 73}
>34... Kf6 {(Kxg6) #9/29 44} 35. c6 {(g7) #9/17 6} 35... Kxg6 {#9/29 36} 36. c7
>{#8/15 0} 36... Kf5 {(Kg5) #9/27 28} 37. c8=Q+ {#7/13 0} 37... Ke4 {
>(Kf4) #9/23 22} 38. Qh3 {(Qxa6) #5/9 0} 38... Kf4 {(Kd4) #8/17 16} 39. Ke6 {
>(Kd5) #4/7 0} 39... Ke4 {(Kg5) #4/26 9} 40. Qg3 {#3/5 0} 1-0
>
>
>Sune
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.