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Subject: Re: Test suite link.

Author: Uri Blass

Date: 09:21:11 11/13/02

Go up one level in this thread


On November 13, 2002 at 11:38:01, Uri Blass wrote:

>On November 12, 2002 at 23:33:36, Jim Monaghan wrote:
>
>>On November 12, 2002 at 06:03:40, Jouni Uski wrote:
>>
>>>Tactical or endgame ( I don't trust positional tests much). Thanks
>>>
>>>Jouni
>>
>>Hi Jouni,
>>
>>Try this link:
>>
>>http://www.horizonchess.com/jim/
>>
>>I just put the Chess IQ test up. It's a fairly good tactical test that steps up
>>in ply nicely.
>>
>>Cheers,
>>Jim
>
>Latest Movei on AMD1000 Mhz scored better than Crafty on 450 Mhz based on the
>results.
>
>Movei solved 224 out of 360 in 10 seconds per move and I am responsible for some
>noise by using the internet and writing something in word at part of the time
>
>summery of movei's results
>
>Sec Solved Total
>---- ------ ------
>   1    152    152
>   2     25    177
>   3     15    192
>   4     11    203
>   5      7    210
>   6      5    215
>   7      3    218
>   8      0    218
>   9      5    223
>  10      1    224
>
>First unsolved positions
>
>[D]1rb2r2/1p1nppk1/2p1n1p1/p3P2p/2qP3R/2N3NP/PP1Q2B1/5RK1 w - - 0 1
>
>Movei needs more than a minute.
>
>depth=9 -0.31 g2d5
>Nodes: 10015293 NPS: 157522
>Time: 00:01:03.58
>
>depth=10 +1.62 g2d5 c4f1 g3f1 c6d5 c3d5 b7b6 d5e7 c8a6 f1e3 b8e8 e3d5 a6c4
>Nodes: 12490083 NPS: 158202
>Time: 00:01:18.95
>
>[D]3r2k1/1p3pp1/1p6/7p/q2NP1P1/2Q2P1b/rP5P/2RR2K1 w - - 0 1
>Bm:  Nf5
>depth=10 +0.82 d4f5
>Nodes: 11990374 NPS: 171364
>Time: 00:01:09.97
>
>depth=10 +1.98 d4f5 d8d1 g1f2 d1d4 c3c8 g8h7 c8f8 a2b2 f2g3 b2g2 g3h3 g2g4 f3g4
>h5g4 h3h4 g7g5 h4g5
>Nodes: 26847067 NPS: 169403
>Time: 00:02:38.48
>
>
>[D]1r5r/3b1pk1/3p1np1/p1qPp3/p1N1PbP1/2P2PN1/1PB1Q1K1/R3R3 b - - 0 1
>Bm:  Nxg4
>
>depth=11 +0.85 f6g4
>Nodes: 11332994 NPS: 162061
>Time: 00:01:09.93
>
>depth=11 +1.47 f6g4 f3g4 d7g4 b2b4 g4e2 b4c5 e2c4 a1a4 b8b2 a4c4 b2c2 e1e2 h8h2
>g2h2 c2e2 h2h3 f4g3 h3g3
>Nodes: 16406593 NPS: 158840
>Time: 00:01:43.29
>
>
>Id:  IQ.956
>[D]2qr1r2/p2n1ppk/1p2p2p/5b2/2PP2NQ/1B4R1/P4PPP/R5K1 w - - 0 1
>Bm:  Bc2
>
>Hard one
>More than 7 minutes only to fail high when it does not know if the fail high is
>correct fail high.
>
>This move is a move that I am going to prune in a game but I guess that movei is
>smarter than me.
>
>At the time of writing these lines latest movei still did not solve the fail
>high.
>
>depth=12 +0.28 a1d1 c8c7 h4e7 d8e8 e7b4 f5g4 g3g4 f7f5 b3c2 h7g8 g4g6 d7f6
>Nodes: 49462753 NPS: 166244
>Time: 00:04:57.53
>
>depth=12 +0.29 b3c2
>Nodes: 73988995 NPS: 167866
>Time: 00:07:20.76
>
>Uri

I did not look at the analysis but movei solved the fail high few minutes ago
and analysis later seems to go fast.
I understand now that the idea of Bc2 is to let Rh3 later and the way to think
about it for humans should be first to think about Rh3 and after seeing that the
bishop can take the rook to think how to get the bishop out of f5.


depth=13 +2.24 b3c2 f8h8 g4h6 g7h6 h4h5 d7e5 d4e5 d8f8 g3h3 h7g8 c2f5 e6f5 h3g3
g8h7 a1d1
Nodes: 286405465 NPS: 165674
Time: 00:28:48.72

depth=14 +2.46 b3c2 f8h8 g4h6 g7h6 h4h5 d7e5 d4e5 d8f8 g3h3 h7g8 c2f5 e6f5 h3g3
g8h7 a1d1 f5f4
Nodes: 332814871 NPS: 165382
Time: 00:33:32.39

I also checked if I can blame the new pruning for not finding
Bc2

Here is analysis of previous version(without the special pruning)

depth=10 +0.34 a1c1 c8c6 c1e1 f8e8 g4e3 d7f6 e3f5 e6f5 g3e3 e8e3 f2e3
Nodes: 35128776 NPS: 160368
Time: 00:03:39.05

depth=11 +0.31 a1d1
Nodes: 65801863 NPS: 159508
Time: 00:06:52.53

depth=11 +0.36 a1d1 f7f6 h4h5 f5g6 h5b5 e6e5 d4e5 a7a6 b5b4 f6e5 g4e3
Nodes: 79342912 NPS: 159294
Time: 00:08:18.09

depth=11 +0.37 b3c2
Nodes: 91050402 NPS: 160015
Time: 00:09:29.01

depth=11 +0.50 b3c2 f8h8 h4e7 h8f8 c2f5 e6f5 g4e5 f5f4 g3c3 h7g8 e5d7 d8d7 e7e4
Nodes: 109364352 NPS: 160924
Time: 00:11:19.60


The old version can find Bc2 at depth 11 but it needs more time to see the fail
high.

On the other hand it needs less time to solve the fail high.

Next position that was not solved.

[D]1k1r4/ppq2p2/8/2pPb1r1/2P1Q1B1/6P1/PP3PK1/R4R2 b - - 0 1

This seems to be also a positional problem because after f5 Bxf5 Bxg3 Bg4 there
is no forced win that I can see.

latest movei changes it's mind at depth 11 from the right solution to anather
move.

depth=11 -0.85 d8g8
Nodes: 20428106 NPS: 158874
Time: 00:02:08.58
depth=11 -0.79 d8g8 a1e1 c7d6 f2f4 g5g4 e4e5 g4g3 g2f2 d6e5 f4e5 g3g2 f2e3 g8g3
e3f4 g3g4 f4f3 g4g3 f3e4 g2b2 f1f7 b2a2
Nodes: 26315464 NPS: 158136
Time: 00:02:46.41


Uri



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