Author: Vincent Diepeveen
Date: 15:56:08 12/05/99
Go up one level in this thread
On December 05, 1999 at 00:37:26, William Bryant wrote:
>On December 04, 1999 at 21:54:03, Vincent Diepeveen wrote:
>
>>On December 04, 1999 at 15:01:57, Côme wrote:
>>
>>>Hello,
>>>In this position:
>>>8/prr2p1p/2R5/PP2pP2/3pRbPk/2pB3P/2P3K1/8 w - - 0 1
>>>Does your program play the strong Rxf4! ?
>>>Best Regards
>>>Alexandre Côme
>>
>>from 13 ply and on diep prefers Ra6 here. it's not happy.
>>but getting slowly happier. starting at -1.1 or something
>>to -0.7 for Rxf4 from 6 ply to 13 ply it plays rf4 then
>>from 13 ply and further it picks Ra6 at 16 ply still ra6 but dropped from
>>-0.25 to -0.44 (which is bad for the side to move)
>
>Vincent,
>
>I was wondering if you could post the PV and evaluations scores for this search.
>
>I ran this position longer on my program, and from ply 10 to 16 it never
>wanted to switch to Ra6.
>
>I also ran it on MacChess 5.0.1 for 15 ply and it also never switched from
>Rxf4 although it spent quite some time on the move Ra6 at each ply.
>
>Below are the Scores, Node Counts, and PV's from both programs.
Hello,
2 remarks, i just cut'n pasted the thing from my monitor
and that goes wrong with some whitespaces here and there.
note that the state checks i typed myselve when i saw it thinking
long, it's done during the search and gives the deepest line seen
and some useless other info (as it's running at 1 processor here).
about the lines: there are 2 things about my eval:
- i was experimenting with myopposite bishop code with respect to
the deep blue position (test went well btw) so there is something
wrong there currently.
- secondly diep is very unhappy about this position with white
as there is something wrong with passed pawns in the endgame for
DIEP. as a result of that it might be unhappy here instead of very
happy. therefore diep tries to get a draw. by not kicking the bishop
at f4 diep has a bigger chance for a draw then of course, as when
kicking it off the board it is just plain happy for black.
Open a Forsythe File come.fen
Line number of come.fen ?
1
D I E P 2.00
black timeleft=27:46.40.00
- = - = - = - = ... 1 ...
o r r - = o = o ... 2 ...
- = R = - = - = ... 3 ...
O O = - o O = - ... 4 ...
- = - o R b O k ... 5 ...
= - o B = - = O ... 6 ...
- = O = - = K = ... 7 ...
= - = - = - = - ... 8 ...
white timeleft=27:46.40.00
white to move
clean
Clearing all Hashtables...
anal
Analysis mode is on
process 0: engineflags = 0 denktime=10000000 maxtime=10000000
00:00 4 (0) 1 -1.56 Rc6xc7 Rb7xc7
00:00 21 (0) 1 -1.03 Bd3-c4 Rc7xc6 b5xc6
00:00 92 (0) 2 -1.13 Bd3-c4 f7-f6
++ a5-a6
00:00 241 (0) 2 0.94 a5-a6 Rc7xc6 a6xb7
00:00 358 (0) 3 0.94 a5-a6 Rc7xc6 a6xb7
00:00 1218 (0) 4 -0.51 a5-a6 Rc7xc6 a6xb7 Rc6-b6
00:00 3134 (0) 5 -1.53 a5-a6 Rc7xc6 a6xb7 Rc6-b6 Re4xf4 e5xf4
++ c6-c7
00:00 4163 (0) 5 -0.84 Rc6xc7 Rb7xc7 b5-b6 a7xb6 a5xb6
00:00 7721 (0) 6 -1.61 Rc6xc7 Rb7xc7 Kg2-f3 Kh4xh3 Re4xf4 e5xf4 Kf3xf4
++ a5-a6
00:00 9270 (0) 6 -1.53 a5-a6 Rc7xc6 a6xb7 Rc6-b6 Re4xf4 e5xf4
++ e4-f4
00:00 12556 (0) 6 -0.51 Re4xf4 e5xf4 Rc6-h6 Kh4-g5 Rh6xh7 Kg5-f6 Kg2-f3
00:00 18225 (0) 7 -0.79 Re4xf4 e5xf4 Rc6-h6 Kh4-g5 Rh6-h5 Kg5-f6 Rh5xh7 Kf6-e5 K
g2-f3
00:03 73336 (0) 8 -0.69 Re4xf4 e5xf4 Rc6-h6 Kh4-g5 Rh6xh7 Rc7-e7 a5-a6 Rb7-d7 Kg
2-f3
00:05 138016 (0) 9 -0.95 Re4xf4 e5xf4 Rc6-h6 Kh4-g5 Rh6xh7 Kg5-f6 a5-a6 Rb7-b8 K
g2-f3 Kf6-e5
00:11 295291 (0) 10 -1.00 Re4xf4 e5xf4 Rc6-h6 Kh4-g5 Rh6-h5 Kg5-f6 Kg2-f3 Kf6-e5
a5-a6 Rb7-b8 Rh5xh7 Rb8-c8
00:27 689761 (0) 11 -0.94 Re4xf4 e5xf4 Rc6-h6 Kh4-g5 Rh6-h5 Kg5-f6 Kg2-f3 Kf6-e5
a5-a6 Rb7-b8 Rh5xh7 Rb8-c8 Bd3-e4
00:41 1083417 (0) 12 -0.77 Re4xf4 e5xf4 Rc6-h6 Kh4-g5 Rh6xh7 Kg5-f6 a5-a6 Rb7-b8
Kg2-f3 Kf6-e5 g4-g5 Rb8-c8 f5-f6
00:57 1563077 (0) 13 -0.80 Re4xf4 e5xf4 Rc6-h6 Kh4-g5 Rh6xh7 Kg5-f6 a5-a6 Rb7-b8
Kg2-f3 Kf6-e5 g4-g5 Rb8-c8 f5-f6 Rc8-g8
state
State check of all 1 processors:
go=true ttl=1842641 abrtd=0 q=0 nre=0 rms=-809 local=3312138
Locks: queue=0 nprctat=0 blocks=0 hash (t,e,b,p)=0,0,0,0 root=0
Px dp_rl dp_q dp_mm abort mmlock mnr DBG wfm wfs
0 30 12 29 0 false 9 -1 false false
Deepest lines seen:
c6a6 c7d7 g2f3 d7d5 d3c4 d5c5 c4d3 f4h2 a6d6 b7b8 b5b6 c5a5 d6h6 h4g5 h6h5 g5f6
g4g5 f6f5 e4e3 e5e4 d3e4 f5e6 e4f5 e6f5 g5g6 f5g6 h5a5 d4e3 b6a7
Current Line:
c6a6 h4g5 e4e1 f4d2 e1e5 c7c5 e5c5 b7c7 null
state
State check of all 1 processors:
go=true ttl=1842641 abrtd=0 q=0 nre=0 rms=-809 local=4146038
Locks: queue=0 nprctat=0 blocks=0 hash (t,e,b,p)=0,0,0,0 root=0
Px dp_rl dp_q dp_mm abort mmlock mnr DBG wfm wfs
0 32 18 31 0 false 8 -1 false false
Deepest lines seen:
c6a6 f4e3 null c7e7 g4g5 e3f4 a6h6 h4g5 h3h4 g5f5 e4e1 e5e4 h6h5 f4g5 h4g5 e4d3
e1e7 b7e7 g5g6 f5g4 g6h7 d3c2 h7h8 c2c1 h8d4 c1f4 d4d1 e7e2 d1e2 f4f3 e2f3
Current Line:
c6a6 h7h5 e4e1 h5g4 a6c6 null b5b6 c7c6
state
State check of all 1 processors:
go=true ttl=1842641 abrtd=0 q=0 nre=0 rms=-809 local=5377043
Locks: queue=0 nprctat=0 blocks=0 hash (t,e,b,p)=0,0,0,0 root=0
Px dp_rl dp_q dp_mm abort mmlock mnr DBG wfm wfs
0 33 16 31 0 false 12 -1 false false
Deepest lines seen:
c6a6 h7h5 b5b6 a7b6 a6a8 h5g4 a8h8 h4g5 h3h4 g5f5 h8h5 f5g6 e4f4 f7f5 f4f5 c7h7
h7h5 f5g5 g6h6 g5g6 h6h7 g6g4 e5e4 d3e4 h7h6 g4g6 h6h7 g6b6 h7g8 e4b7 h5h4
Current Line:
c6a6 h7h5 g2f3 c7c8 a6d6 b7b8 e4e1 c8f8 d6d7 f7f6 d7a7 e5e4
++ c6-a6
14:05 18321338 (0) 13 -0.42 Rc6-a6 Rc7-e7 Re4xf4 e5xf4 Kg2-f3 Rb7-c7 Ra6-h6 Kh4-
g5 Rh6-h5 Kg5-f6 Kf3xf4 Kf6-g7 b5-b6
22:39 29438629 (0) 14 -0.44 Rc6-a6 Rb7-b8 Kg2-f3 Rb8-h8 Re4xf4 e5xf4 Ra6-h6 Kh4-
g5 Rh6-h5 Kg5-f6 Kf3xf4 h7-h6 Kf4-e4 Rc7-d7 g4-g5 Kf6-g7
33:42 44128931 (0) 15 -0.25 Rc6-a6 Rb7-b8 Kg2-f3 Rb8-h8 Re4xf4 e5xf4 Ra6-h6 Kh4-
g5 Rh6-h5 Kg5-f6 Kf3-e4 Rc7-d7 Rh5-h6 Kf6-g7 g4-g5
01:28:34 114614795 (0) 16 -0.44 Rc6-a6 Rc7-e7 Kg2-f3 Bf4-g5 f5-f6 Re7-e8 Ra6-d6
h7-h6 Kf3-g2 Bg5-e3 b5-b6 a7xb6 Bd3-b5 Re8-b8
02:18:55 181148019 (0) 17 -0.16 Rc6-a6 Rb7-b8 Kg2-f3 Rb8-e8 Ra6-d6 Rc7-e7 Re4xf4
e5xf4 Kf3xf4 Kh4xh3 f5-f6 Re7-e3 Rd6xd4 Kh3-g2 Bd3-e4
04:57:44 387981837 (0) 18 -0.28 Rc6-a6 Rc7-e7 Kg2-f3 Bf4-g5 f5-f6 Re7-e8 Ra6-d6
h7-h6 Kf3-g2 Rb7-c7 Rd6-d5 Bg5xf6 Re4xd4 Re8-e7
11:24:08 889142615 (0) 19 0.00 Rc6-a6 Rc7-e7 Kg2-f3 Bf4-g5 f5-f6 Re7-e8 Ra6-d6 h
7-h6 Kf3-g2 Rb7-c7 Rd6-d5 Bg5xf6 g4-g5 Kh4xg5
quit
c:\diep>
>William
>wbryant@ix.netcom.com
>
>Screamer
>Ply Depth = 16
>Node Count at Depth 16 = 140544458
>Score = +0.73
>PV = Rxf4 exf4 Rh6+ Kg5 Rxh7 Re7 Rh5+ Kf6 g5+ Ke5 Kf3 Re8 g6 Rf8 Rh7 Re7
>
>MacChess
>Ply Depth = 15
>Node Count at Depth 15 = 385709853
>Score = -17
>PV = Rxf4 exf4 Rh6+ Kg5 Rh5+ Kf6 g5+ Ke5 Rxh7 Rb8 g6 Re7 Kf3 Rf8 Kg4 Rc7 g7 Re8
>Rh8 Rcc8
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