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Subject: Re: Mate found by Rybka in 3 sec

Author: Stuart Cracraft

Date: 15:37:44 12/12/05

Go up one level in this thread


On December 12, 2005 at 18:28:23, Vincent Lejeune wrote:

>Who can do better ?
>
>[d]5R2/6p1/8/8/1P3n1r/5k2/8/6K1 b - - 0 1
>
>83892770: NO BOOK ALL ENG,D - ENET,R, 3m + 0s, rated blitz 2005
>5R2/6p1/8/8/1P3n1r/5k2/8/6K1 b - - 0 1
>
>Analysis by Rybka 1.0 Beta 32-bit:
>
>55...g5
>  -+  (-5.26)   Profondeur: 3   00:00:00
>55...g5
>  -+  (-5.20)   Profondeur: 4   00:00:00
>55...g5 56.b5
>  -+  (-4.67)   Profondeur: 5   00:00:00
>55...Th5 56.Tf7
>  -+  (-4.89)   Profondeur: 5   00:00:00
>55...Th5 56.Tf7 Td5
>  -+  (-5.18)   Profondeur: 6   00:00:00  5kN
>55...Th5 56.Tf7 Td5 57.b5
>  -+  (-5.36)   Profondeur: 7   00:00:00  9kN
>55...Th5 56.Tf7 Td5 57.b5 g5
>  -+  (-5.36)   Profondeur: 8   00:00:00  12kN
>55...Th5 56.Tf7 Td5 57.b5 g5 58.b6
>  -+  (-6.25)   Profondeur: 9   00:00:00  21kN
>55...Th5 56.Tf7 Td5 57.b5 g5 58.b6 Rg3
>  -+  (-6.25)   Profondeur: 10   00:00:00  29kN
>55...Th5 56.Tf7 Td5 57.b5 g5 58.b6 Rg3 59.Txf4
>  -+  (-6.31)   Profondeur: 11   00:00:01  48kN
>55...Th5 56.Tf7 Td5 57.Te7 Ce2+ 58.Txe2 Rxe2 59.Rg2 Td2 60.b5
>  -+  (-6.31)   Profondeur: 12   00:00:02  116kN
>55...Th5 56.Tf7 Td5 57.Rh2 g5 58.Tf8 Td2+ 59.Rg1 Td1+ 60.Rh2
>  -+  (-9.29)   Profondeur: 13   00:00:02  487kN
>55...Th5 56.Tf7 Td5 57.Rh2 g5 58.Tf8 Td2+ 59.Rg1 Td1+ 60.Rh2
>  -+  (-320.00)   Profondeur: 14   00:00:03  693kN

Not me.

Rybka is outsearching by about a factor of 5x nps (not a good
measure, I know).

Rybka has some good tricks. Too bad we'll never learn of them.

Alpha=2627 Beta=3428 Maxdepth=9999999 MaxTime=16666666
Itr/Max Mv   Time   Score Nodes PV
 1/ 4  f3e4  0.00 3052       30 Pf3e4
 2/ 6  h4g4  0.00 3054      181 Ph4g4 Pg1f1 Pg4g2
 3/ 7  g7g5  0.01 3026      973 Pg7g5 Pf8f7 Pf3e4
 4/ 9  g7g5  0.02 3028     1688 Pg7g5 Pf8f7 Ph4g4 Pg1f1 Pg4g2
 5/12  g7g5  0.06 3026     6377 Pg7g5 Pf8f7 Ph4g4 Pg1f1 Pg4g2 Pf1e1
 6/13  g7g5  0.15 3036    17659 Pg7g5 Pf8f7 Ph4g4 Pg1f1 Pg4g2 Pf7e7 Pf4d5
 7/17  h4g4  0.57 3038    69481 Ph4g4 Pg1f1 Pf3e4 Pb4b5 Pf4d5 Pf8e8 Pe4d4 Pe8e1
Pg7g5
 8/24  h4g4  1.45 3050   178850 Ph4g4 Pg1f1 Pg7g5 Pf8f7 Pg4g2 Pf1e1 Pg2b2 Pf7g7
Pf3e4
 9/26> h4g4  8.55 3450  1087069 Ph4g4 Pg1f1 Pg7g5 Pf8f7 Pg4g2 Pf1e1 Pg2b2 Pf7g7
Pf3e4 Pg7g5 Pb2b4
 9/26  h4h5  9.02 4028  1151011 Th4h5 Tf8f7 Tg7g6 Tf7f8 Th5b5 Tf8c8 Tb5b4
10/26  h4h5  9.65 4032  1235345 Th4h5 Tf8f7 Tg7g6 Tf7f6 Th5b5 Tg1f1 Tb5b4 Tf1e1
11/26  h4h5 11.06 4042  1420637 Ph4h5 Pf8f7 Pg7g6 Pf7f8 Ph5b5 Pf8e8 Pb5b4 Pe8e1
Pb4b2 Pe1e7 Pf4d5
12/27  h4h5 15.74 4041  2071137 Th4h5 Tf8f7 Tg7g6 Tf7f6 Th5b5 Tf6g6 Tf4g6 Tg1h1
Tmtmt
13/32  h4h5 27.42 4050  3621949 Th4h5 Tf8f7 Tg7g6 Tf7f8 Th5b5 Tf8e8 Tb5b4 Te8e1
Tb4b2
14/34>Th4h5  79.47 4450 10434084 Th4h5 Tf8f7 Tg7g6 Tf7f8 Th5b5 Tg1f1 Tb5b4 Tf1e1
Tb4b2 Tmtmt
nps=131302 ha=11.00% q=56.0% bc=51% br=2.95% mp=0<>1079214080
pawnx=6893 recapx=10616 qcheckx=0 checkx=472720 qfutilx=230516 onereplyx=82231
mthrx=371 futilx=0 bm
x=18170
h4h5 f8f7 g7g6 f7f8 h5b5 g1f1 b5b4 f1e1 b4b2
+ 14.00/34.00 100% 1/1 ha=11 79.47 10434084 10434084/79/131302
6893/10616/371/472720/230516/82231/0/
18170
pawnx/recapx/mthrx/checkx/qfutilx/onereplyx/futilx/bmx
--------------------------------
Missed:

branching factor = 2.95



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