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Subject: Re: WAC 002, again... :)))

Author: Robert Hyatt

Date: 17:00:56 12/23/02

Go up one level in this thread


On December 23, 2002 at 12:00:14, Uri Blass wrote:

>On December 23, 2002 at 11:54:37, Robert Hyatt wrote:
>
>>On December 23, 2002 at 10:57:19, Vincent Diepeveen wrote:
>>
>>>On December 23, 2002 at 10:14:47, Sune Fischer wrote:
>>>
>>>>On December 23, 2002 at 10:05:20, Vincent Diepeveen wrote:
>>>>
>>>>>On December 23, 2002 at 09:59:44, Sune Fischer wrote:
>>>>>
>>>>>what i meant to say is that it's a peanut to solve WAC 002
>>>>>if you do not have the in quadrant rule. with the pawn on e3
>>>>>still the white king is within the quadrant of the pawns.
>>>>>
>>>>>So it is amazing for me how some programs can solve this at 8 or 9
>>>>>ply. Most commercials only solve this when they actually see a queen
>>>>>on the board for black which can't get captured (or gets recaptured
>>>>>to queen again).
>>>>
>>>>Even if you give a high score for passed pawn duos you are a whole rook behind
>>>>because of the sacrifice, I doubt any program will find it for positional
>>>>reasons.
>>>
>>>==> Crafty
>>
>>Wrong again.  Why don't you try this stuff _first_???
>
>I guess that he means to old crafty that could find it at depth 4.

Then he should say "old crafty"...


>
>New position
>[D]8/7p/5k2/5p2/p1p2P2/Pr1pPK2/1P1R3P/8 b - - 0 1
>
>Analysis by Crafty 15.18:
>
>1...Kf6-e6
>  -+  (-1.65)   Depth: 1   00:00:00
>1...Kf6-e6 2.e3-e4
>  -+  (-1.58)   Depth: 2   00:00:00
>1...Kf6-e6 2.e3-e4 f5xe4+ 3.Kf3xe4 h7-h5
>  µ  (-1.09)   Depth: 3   00:00:00
>1...c4-c3
>  µ  (-1.39)   Depth: 3   00:00:00
>1...c4-c3 2.b2xc3 Rb3xc3 3.Rd2-a2
>  -+  (-1.52)   Depth: 3   00:00:00
>1...c4-c3 2.b2xc3 Rb3xc3 3.Rd2-a2 Kf6-e6
>  -+  (-1.62)   Depth: 4   00:00:00
>1...Rb3xb2
>  -+  (-1.92)   Depth: 4   00:00:00
>1...Rb3xb2 2.Rd2xb2 c4-c3 3.Rb2-b6+ Kf6-g7 4.h2-h4
>  -+  (-3.54)   Depth: 4   00:00:00
>1...Rb3xb2 2.Rd2xb2 c4-c3 3.Rb2-b6+ Kf6-g7 4.Rb6-b7+
>  -+  (-3.18)   Depth: 5   00:00:00
>1...Rb3xb2 2.Rd2xb2 c4-c3 3.Rb2-b6+ Kf6-g7 4.Rb6-b7+ Kg7-h6 5.Rb7-b6+ Kh6-h5
>6.Rb6-g6
>  -+  (-3.30)   Depth: 6   00:00:00  10kN
>1...Rb3xb2 2.Rd2xb2 c4-c3 3.Rb2-b6+ Kf6-e7 4.Rb6-b7+ Ke7-d6 5.Rb7xh7 c3-c2
>6.Rh7-h6+ Kd6-c5 7.Rh6-d6 c2-c1Q 8.Rd6xd3
>  -+  (-3.47)   Depth: 7   00:00:00  30kN
>1...Rb3xb2 2.Rd2xb2 c4-c3 3.Rb2-b6+ Kf6-e7 4.Rb6-b7+ Ke7-d6 5.Rb7-a7 c3-c2
>6.Ra7xa4 c2-c1Q 7.Ra4-d4+ Kd6-c5 8.Rd4xd3
>  -+  (-3.24)   Depth: 8   00:00:00  71kN
>1...Rb3xb2 2.Rd2xb2 c4-c3 3.Rb2-b6+ Kf6-e7 4.Rb6-b7+ Ke7-d6 5.Rb7-b6+ Kd6-c5
>6.Rb6-f6 c3-c2 7.Rf6xf5+ Kc5-c4 8.Rf5-f7 h7-h5
>  -+  (-3.13)   Depth: 9   00:00:00  291kN
>1...Rb3xb2 2.Rd2xb2 c4-c3 3.Rb2-b6+ Kf6-e7 4.Rb6-b7+ Ke7-d6 5.Rb7-b6+ Kd6-d7
>6.Rb6-f6 c3-c2 7.Rf6xf5 Kd7-e6
>  -+  (-2.92)   Depth: 10   00:00:01  551kN
>
>(Blass, Tel-aviv 23.12.2002)
>
>
>
>
>Newer Crafty(not the latest version) needs depth 12
>
>New position
>8/7p/5k2/5p2/p1p2P2/Pr1pPK2/1P1R3P/8 b - - 0 1
>
>Analysis by Crafty 18.15:
>
>1...Rb3-b7
>  µ  (-1.36)   Depth: 1/6   00:00:00
>1...Rb3-b7 2.e3-e4
>  µ  (-1.17)   Depth: 2/6   00:00:00
>1...Rb3-b7 2.e3-e4 Rb7-g7
>  -+  (-1.46)   Depth: 3/6   00:00:00
>1...Rb3-b7 2.h2-h4 Rb7-e7 3.h4-h5
>  -+  (-1.43)   Depth: 4/8   00:00:00
>1...c4-c3 2.b2xc3 Rb3xc3 3.Rd2-a2 Rc3-c2
>  -+  (-1.73)   Depth: 4/8   00:00:00
>1...c4-c3 2.b2xc3 Rb3xc3 3.e3-e4 Rc3xa3 4.e4-e5+ Kf6-e6
>  -+  (-1.62)   Depth: 5/11   00:00:00
>1...c4-c3 2.b2xc3 Rb3xc3 3.e3-e4 Kf6-e6 4.e4-e5 Rc3xa3
>  -+  (-1.62)   Depth: 6/14   00:00:00  6kN
>1...c4-c3 2.b2xc3 Rb3xc3 3.e3-e4 Kf6-e6 4.e4-e5 Rc3xa3
>  -+  (-1.54)   Depth: 7/14   00:00:00  12kN
>1...c4-c3 2.b2xc3 Rb3xc3 3.e3-e4 Rc3xa3 4.e4-e5+ Kf6-e6 5.Kf3-e3 Ke6-d5
>6.Rd2xd3+ Ra3xd3+ 7.Ke3xd3 a4-a3
>  µ  (-1.31)   Depth: 8/16   00:00:00  22kN
>1...Rb3-b8 2.h2-h4 Rb8-e8 3.h4-h5 h7-h6 4.Rd2-d1 Re8-g8 5.Rd1-d2
>  -+  (-1.59)   Depth: 8/16   00:00:00  63kN
>1...Rb3-b8 2.h2-h4 Rb8-e8 3.h4-h5 h7-h6 4.Rd2-d1 Kf6-e6 5.Rd1-d2 Ke6-d5
>  -+  (-1.63)   Depth: 9/18   00:00:00  117kN
>1...Rb3-b8 2.Rd2-g2 h7-h5 3.Rg2-d2
>  -+  (-1.71)   Depth: 10/19   00:00:02  740kN
>1...Rb3-b8 2.h2-h4 Rb8-e8 3.Rd2-d1 h7-h5 4.Rd1-c1 Re8-e4 5.Rc1-g1 Kf6-e6
>6.Rg1-g5 d3-d2 7.Kf3-e2
>  -+  (-1.76)   Depth: 11/23   00:00:04  1925kN
>1...Rb3-b8 2.Rd2-g2 h7-h5 3.h2-h4 Rb8-b7 4.e3-e4 f5xe4+ 5.Kf3xe4 Rb7-e7+
>6.Ke4-d4 Re7-e2 7.Rg2-g1 d3-d2 8.Rg1-d1 Kf6-f5 9.Kd4xc4 Kf5xf4
>  -+  (-1.66)   Depth: 12/24   00:00:15  7503kN
>1...Rb3xb2 2.Rd2xb2 c4-c3 3.Rb2-b6+ Kf6-f7 4.Rb6-b7+ Kf7-g6 5.Rb7-b6+ Kg6-h5
>6.Rb6-f6 c3-c2 7.Rf6xf5+ Kh5-h4 8.Rf5-f7 h7-h5 9.Rf7-d7 c2-c1Q 10.Rd7xd3
>  -+  (-2.07)   Depth: 12/24   00:00:23  11352kN
>1...Rb3xb2 2.Rd2xb2 c4-c3 3.Rb2-b6+ Kf6-f7 4.Rb6-b7+ Kf7-g6 5.Rb7-b6+ Kg6-h5
>6.Rb6-f6 c3-c2 7.Rf6xf5+ Kh5-h4 8.Rf5-f7 h7-h5 9.Rf7-d7 c2-c1Q 10.Rd7xd3
>  -+  (-2.47)   Depth: 13/28   00:00:29  14374kN
>
>(Blass, Tel-aviv 23.12.2002)
>
>Uri



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