Author: Arturo Ochoa
Date: 09:41:50 02/27/01
Go up one level in this thread
>>Hi Sune!
>>
>>First ... thanks for the positions you've been giving us the last couple of
>>days! They sure are educational and easy to understand ... for me at least.
>>
>>This is really helpful, since I'm not a strong chess player so am having some
>>difficulties finding the right knowledge to build into my chess program. I like
>>to fiddle with the search, and neglect the eval part :) ... so this is giving
>>me some ideas! Although it's not clear to me whether I should use this, coz I'm
>>not sure (in light of the results) if even the top programs have this knowledge
>>built in! ;)
>>
>>The above position is a different kind of 'animal' though, it's an easy (at
>>least for my program, less than a second :)) forced mate. I knew this one, and
>>remembered that I have (dare I say) an even more entertaining position two moves
>>prior to this one:
>>
>>[D]8/7b/8/8/7p/1pp5/7Q/k1K1N3 w - - 0 1
>>
>>This is also a forced mate, but a bit deeper than the other one ... enjoy! :)
>>
>>Groetjes,
>>Paul
>
> Thank you very much Paul! Very nice indeed! After 1.Nc2+ the two different
> takings of the knight were refuted. Then 1.-Ka2 2.Nb4++ Ka2 leads to the
> first game in the club house ;) Third and last the alternative 2.-Ka3 claimed
> a few more moves. Beautiful!
>
> Sune
Thinking....
+---+---+---+---+---+---+---+---+ -
8 | | | | | | | | |
+---+---+---+---+---+---+---+---+ 00:00:00 00:00:42
7 | | | | | | | | *B|
+---+---+---+---+---+---+---+---+
6 | | | | | | | | | Time infinito
+---+---+---+---+---+---+---+---+ Hash 200 Mb
5 | | | | | | | | | Engine Rebel Century 3.0
+---+---+---+---+---+---+---+---+ Personality Rebel Century 3
4 | | | | | | | | *p| anti-GM Off
+---+---+---+---+---+---+---+---+ Tactics Off
3 | | *p| *p| | | | | | Bluff Chess Off
+---+---+---+---+---+---+---+---+ Style Normal
2 | | | | | | | | Q | Strength Strongest
+---+---+---+---+---+---+---+---+ Search Normal Search
1 | *K| | K | | N | | | |
+---+---+---+---+---+---+---+---+
a b c d e f g h
8/7b/8/8/7p/1pp5/7Q/k1K1N3 w - -
[Event "Computer Chess Test Suite"]
[Site "EPD2diag V1.5"]
[Date "2001.02.27"]
[Round "?"]
[White ""]
[Black ""]
[Result "*"]
[WhiteElo "?"]
[BlackElo "?"]
[FEN "8/7b/8/8/7p/1pp5/7Q/k1K1N3 w - - 0 1"]
1.*
00:00:00 1.03 1.17 1.Cd3 Axd3 2.Dxh4
00:00:00 1.04 3.97 1.Dxh4
00:00:00 2.00 -2.68 1.Dxh4 b2+ 2.Rd1 b1=D+ 3.Re2
00:00:00 2.13 -0.82 1.Rd1 b2 2.Cc2+ Axc2+ 3.Rxc2 b1=D+
4.Rxc3 (0)
00:00:01 2.18 -0.39 1.Cd3 Axd3
00:00:01 2.19 0.78 1.Cc2+ Axc2 2.Dxh4 b2+ 3.Rxc2 b1=D+
4.Rxc3 (1)
00:00:01 3.00 0.78 1.Cc2+ Axc2 2.Dxh4 b2+ 3.Rxc2 b1=D+
4.Rxc3 (1)
00:00:01 4.00 1.63 1.Cc2+ Ra2 2.Cb4 Ra1 3.Rd1 b2 4.Cc2
Axc2 5.Re2 b1 (1)
00:00:01 5.00 0.00 1.Cc2+ Ra2 2.Cb4 Ra1 3.Cc2
00:00:01 6.00 0.00 1.Cc2+ Ra2 2.Cb4 Ra1 3.Cc2
00:00:01 7.00 0.00 1.Cc2+ Ra2 2.Cb4 Ra1 3.Cc2
00:00:01 8.00 0.00 1.Cc2+ Ra2 2.Cb4 Ra1 3.Cc2
00:00:02 9.00 0.00 1.Cc2+ Ra2 2.Cb4 Ra1 3.Cc2
00:00:04 10.00 0.00 1.Cc2+ Ra2 2.Cb4 Ra1 3.Cc2
00:00:09 11.00 0.00 1.Cc2+ Ra2 2.Cb4 Ra1 3.Cc2
00:00:46 12.00 9.13 1.Cc2+ Ra2 2.Cb4 Ra3 3.Cd3 Axd3
4.Dd6 Ra4 5.Dd4 Ac4 6.Dxc4 Ra3 7.Dxh4
b2 8.Rc2 b1 (34)
Positions : 126.947.638
Nodes per second : 405.583
Extensions (checks) : 18.097.888 (14%)
Extensions (captures) : 380.197 (0%)
Extensions (king safety) : 11.318 (0%)
Extensions (on depth) : 0 (0%)
Extensions (remaining) : 141.231 (0%)
Extensions (total) : 18.630.634 (14%)
Hash Table : 7.658.627 8.200.038 (70%)
Average depth : 22
Deepest depth : 60
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Last modified: Thu, 15 Apr 21 08:11:13 -0700
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