Author: Vincent Diepeveen
Date: 18:26:50 02/22/99
Go up one level in this thread
On February 22, 1999 at 13:44:42, Bruce Moreland wrote:
>
>On February 22, 1999 at 08:14:05, Dan Homan wrote:
>
>>On February 22, 1999 at 04:09:49, Will Singleton wrote:
>>
>>>New Feature
>>>
>>>I thought I'd post a position each week, taken from member submissions
>>>from the current week's play. Recently on the CCC board we've had a few
>>>positions posted, and these have helped me track down some problems with
>>>my code. Probably just chance, but I think these things are helpful
>>>for programmers in that they can see how their results differ from others,
>>>and figure out why.
>>>
>>>So members, please send me interesting games that your programs play (or
>>>just the positions), and perhaps we can all benefit from the analyses.
>>>
>>>To start the ball rolling, here's a position from the game Amateur-LambChop,
>>>played on ICC yesterday. For some reason, Amateur declined the easy move,
>>>which would have won quickly, and played a tricky move that led to a loss.
>>>On subsequent analysis, it took Amateur 9 ply to see the right move. During
>>>the actual game (blitz), it only searched about 7 ply. I'm thinking this
>>>might be some bug or other weirdness. Does your program have any trouble
>>>finding the right move quickly?
>>>
>>>7k/2pn1Q2/2r4p/p1qpp3/Pp1b3N/1P1P2PP/2P1R2B/7K w - -
>>
>>Nice problem. I'll have to look at it in more detail later, but here
>>are EXchess' results
>>
>>EXchess likes Qxd7 with a score of +3.3 until ply 6 where it switches
>>to Nf5. The score Nf5 climbs to +4.1 in ply 7 and 8. In ply 9, Nf5
>>fails low with a score of 0.6 and EXchess switches back to Qxd7 with a
>>score of 3.8. Qxd7 fails high at ply 10.... I haven't run it deeper
>>yet. Looks very interesting.
>
>This is another interesting FEN.
>
>7k/2pn1Q2/2r4p/p1qppN2/Pp1b4/1P1P2PP/2P1R2B/7K b - - 2 51
>This is the position after 51. Nf5 in the game. The problem here is to figure
>out how long until your program thinks that white's advantage is much reduced.
7 ply
>bruce
Analysis mode is on
Allocating 79999920 bytes hashtables
Permanent brain is on
# move freq games score*2 learn ==> huge cache
D I E P 1.60.02
black timeleft=27:46.40.00
- = - = - = - k ... 1 ...
= - o n = Q = - ... 2 ...
- = r = - = - o ... 3 ...
o - q o o N = - ... 4 ...
O o - b - = - = ... 5 ...
= O = O = - O O ... 6 ...
- = O = R = - B ... 7 ...
= - = - = - = K ... 8 ...
white timeleft=27:46.40.00
black to move
# move freq games score*2 learn ==> game cache
D I E P 1.60.02
anal
Analysis mode is on
00:00 380 1 -MATE01 Qc5xc2 Qf7-g7
00:00 1385 1 -4.82 Qc5-f8 Qf7xd7
00:00 1591 1 -4.36 e5-e4 Qf7xd7
00:00 1883 2 -4.36 e5-e4 Qf7xd7
00:00 7525 3 -6.99 e5-e4 Nf5-e7 Qc5xe7 Qf7xe7 e4xd3 c2xd3
00:00 8618 3 -4.72 Qc5-f8 Qf7xd7 Rc6-c5
00:00 10679 4 -5.09 Qc5-f8 Qf7xd7 Rc6-f6 g3-g4
00:00 18552 5 -5.05 Qc5-f8 Qf7xd7 Rc6-c5 g3-g4 Qf8-f6
00:01 42177 6 -5.51 Qc5-f8 Qf7xd7 Rc6-d6 Qd7xc7 Rd6-g6 Nf5xd4 Qf8-f1 Bh2-g1 e5xd
4 Qc7xa5 Qf1xe2 Bg1xd4 Rg6-g7 Bd4xg7 Kh8xg7 Qa5xd5
00:03 87662 7 -0.86 Qc5-f8 Qf7xf8 Nd7xf8 g3-g4 Rc6-e6 Kh1-g2 Kh8-g8
00:04 109731 8 -1.15 Qc5-f8 Qf7xf8 Nd7xf8 g3-g4 Rc6-e6 Kh1-g2 c7-c5 Kg2-f1
00:06 171000 9 -1.04 Qc5-f8 Qf7xf8 Nd7xf8 g3-g4 Rc6-e6 Nf5xd4 e5xd4 Re2-e5 c7-c6
Kh1-g2
00:10 271325 10 -1.09 Qc5-f8 Qf7xf8 Nd7xf8 g3-g4 Rc6-e6 Kh1-g2 Bd4-c3 Nf5-e3 c7-
c6 Ne3-f5
00:17 452416 11 -1.19 Qc5-f8 Qf7xf8 Nd7xf8 g3-g4 Rc6-e6 Nf5xd4 e5xd4 Re2-e5 c7-c
5 Re5xd5 Re6-e1 Bh2-g1
00:39 1082441 12 -1.18 Qc5-f8 Qf7xf8 Nd7xf8 Nf5-e7 Rc6-c5 g3-g4 Kh8-g7 Ne7-f5 Kg
7-g6 Nf5xd4 e5xd4 Bh2-g1 Rc5-c6 Bg1xd4
01:18 2116973 13 -1.07 Qc5-f8 Qf7xf8 Nd7xf8 Nf5-e7 Rc6-c5 g3-g4 Kh8-h7 Bh2xe5 Bd
4xe5 Re2xe5 Rc5xc2 Re5xd5 Rc2-e2
quit
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