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Subject: Re: Deep Blue vs Kasparov 1997 difficult positions

Author: Vine Smith

Date: 19:14:55 04/17/02

Go up one level in this thread


On April 17, 2002 at 21:34:28, Slater Wold wrote:

>On April 17, 2002 at 21:02:28, Vine Smith wrote:
>
>>On April 17, 2002 at 13:26:34, K. Burcham wrote:
>>
>>>
>>>
>>>Deep Blue vs Kasparov  1997 Six game match
>>>
>>>if you have any Deep Blue positions that were played in the six game match, that
>>>you feel are very difficult for todays programs, could you please post them
>>>here. I will check to make sure I have them.
>>>If you have any positions you feel that cannot be found by todays programs,
>>>please state that with the position please.
>>>I am trying to compile the complete list of Deep Blue moves that anyone thinks
>>>cannot be found, or played by todays programs. probably have most--but you might
>>>have one i overlooked.
>>>If you have read somewhere about a Deep Blue position that someone thought was
>>>too difficult for todays programs, please post with position and game number.
>>>
>>>question everything,
>>>kburcham
>>
>>This is actually a counter-example, a failure by DB to find its best chance that
>>Junior 7 (but not Fritz6, Crafty 18.10, Yace 0.99.56, or Tiger 14.0) sees in
>>about 6 minutes on a PIII-850 (so, presumably, in tournament time on a faster
>>machine). Several annotators believed this was DB's last chance to draw game 1:
>>3rr1k1/1p6/2p3P1/4nP1p/pP2p3/P1B1NbP1/2P3B1/5RK1 b - - 0 36
>>Instead of 36...Kf8 as played by DB here, 36...Ng4 gives good drawing chances
>>according to Benjamin's notes from Informant, and Goodman and Keene's book on
>>the match. Incidentally, I have a PGN file of Game 1 compiling all notes I could
>>find from various sources, including Seirawan, Nunn, Goodman/Keene,
>>Khodarkovsky/Shamkovich, Henley, and Benjamin amongst others, as well as
>>excerpts from the Deep Blue log files for the game. If you're interested, I
>>could e-mail this to you.
>>
>>Regards,
>>Vine Smith
>
>W,S - Deep Junior 7
>3rr1k1/1p6/2p3P1/4nP1p/pP2p3/P1B1NbP1/2P3B1/5RK1 b - - 0 1
>
>Analysis by Deep Junior 7:
>
>1...b6 2.Bxe5 Rxe5
>  =  (0.19)   Depth: 3   00:00:00
>1...b6 2.Bxe5 Bxg2 3.f6 Rxe5 4.f7+ Kg7 5.Kxg2 h4
>  ²  (0.28)   Depth: 9   00:00:00  23kN
>1...Bxg2 2.Kxg2 Kf8 3.Rf4 c5 4.bxc5 Nc6 5.g7+
>  =  (0.04)   Depth: 9   00:00:00  39kN
>1...Bxg2 2.Kxg2 Kf8 3.Rf4 c5 4.bxc5 Nc6 5.g7+
>  =  (0.04)   Depth: 9   00:00:00  39kN
>1...Bxg2 2.Kxg2 Kf8 3.Rf4 c5 4.bxc5 Nc6 5.g7+
>  =  (0.04)   Depth: 9   00:00:00  39kN
>1...Bxg2 2.Kxg2 Kf8 3.Rf4 c5 4.bxc5 Nc6 5.g7+
>  =  (0.04)   Depth: 9   00:00:00  39kN
>1...Bxg2 2.Kxg2 Kf8 3.Rf4 c5 4.bxc5 Nc6 5.g7+
>  =  (0.04)   Depth: 9   00:00:00  39kN
>1...Bxg2 2.Kxg2 Kf8 3.Rf4 c5 4.bxc5 Nc6 5.g7+
>  =  (0.04)   Depth: 9   00:00:00  39kN
>1...Bxg2 2.Kxg2 Kf8 3.Rf4 c5 4.bxc5 Nc6 5.g7+
>  =  (0.04)   Depth: 9   00:00:00  39kN
>1...Bxg2 2.Kxg2 Kf8 3.Rf4 c5 4.bxc5 Nc6 5.g7+
>  =  (0.04)   Depth: 9   00:00:00  39kN
>1...Bxg2 2.Kxg2 Kf8 3.Rf4 c5 4.bxc5 Nc6 5.g7+
>  =  (0.04)   Depth: 9   00:00:00  39kN
>1...Bxg2 2.Kxg2 Kf8 3.Rh1 Rd6 4.Rxh5 Nxg6 5.fxg6 Rxg6
>  ²  (0.46)   Depth: 12   00:00:00  503kN
>1...b6 2.Bxe5 Bxg2 3.Kxg2 Rxe5 4.Nc4 Red5 5.f6 Rg5 6.f7+ Kf8 7.Rf6
>  ²  (0.37)   Depth: 12   00:00:00  503kN
>1...Kf8 2.Bxe5 Bxg2 3.Kxg2 Rxe5 4.f6 Rg5 5.g7+ Kg8 6.Kh3
>  ²  (0.26)   Depth: 12   00:00:00  708kN
>1...Kf8 2.Bxe5 Bxg2 3.Kxg2 Rxe5 4.Rh1 Rd2+ 5.Kf1 Re8 6.Rxh5 Red8 7.Rh8+ Kg7
>8.Rxd8
>  ²  (0.35)   Depth: 15   00:00:01  3447kN
>1...Kf8 2.Bxe5 Rxe5 3.Bxf3 exf3 4.Rxf3 b5 5.Kf2 Kg7 6.Ke2 Ree8 7.Rf1
>  ²  (0.35)   Depth: 18   00:00:18  45572kN
>1...Ng4 2.Re1 Nxe3 3.Rxe3 Rd1+ 4.Bf1 b5 5.Kf2 Rc1 6.Bd3 Rd8 7.Bf6 Rf8 8.Bb2 Rb1
>  =  (0.00)   Depth: 18   00:01:12  144859kN
>
>(W,  17.04.2002)
>
>W,S - Shredder Paderborn
>3rr1k1/1p6/2p3P1/4nP1p/pP2p3/P1B1NbP1/2P3B1/5RK1 b - - 0 1
>
>Analysis by Shredder Paderborn:
>
>1...Bxg2 2.Rf4 Nxg6 3.Kxg2
>  µ  (-1.24)   Depth: 1/2   00:00:00
>1...Bxg2 2.Kxg2 Nf3 3.f6
>  µ  (-1.24)   Depth: 1/2   00:00:00
>1...Bxg2 2.Kxg2 b5 3.Kf2
>  µ  (-0.98)   Depth: 2/4   00:00:00
>1...Bxg2 2.Kxg2 b5 3.Kf2
>  µ  (-0.91)   Depth: 2/4   00:00:00
>1...Bxg2 2.Kxg2 b5 3.Kf2
>  µ  (-0.91)   Depth: 3/6   00:00:00
>1...Bxg2 2.Kxg2 b5 3.Kf2
>  µ  (-0.91)   Depth: 4/8   00:00:00
>1...Bxg2 2.Kxg2 Kf8 3.Kf2 Rd1 4.Rxd1
>  ³  (-0.66)   Depth: 5/10   00:00:00
>1...Bxg2 2.Kxg2 Kf8 3.Rf4 Nf3 4.f6
>  ³  (-0.43)   Depth: 5/10   00:00:00
>1...b6 2.Bh3 Ng4 3.Nxg4 hxg4 4.Kf2 gxh3
>  ³  (-0.44)   Depth: 5/10   00:00:00
>1...b6 2.Bxe5 Bxg2 3.Kxg2 Rd2+ 4.Rf2 Rxf2+ 5.Kh1
>  ³  (-0.53)   Depth: 5/10   00:00:00
>1...Kf8 2.Bxf3 Nxf3+ 3.Kf2 Nh2 4.Rd1 Rxd1 5.Nxd1
>  ³  (-0.54)   Depth: 5/10   00:00:00
>1...Kf8 2.Bh3 Be2 3.Rf4 Nc4
>  ³  (-0.59)   Depth: 5/10   00:00:00
>1...Kf8 2.Bxf3 Nxf3+ 3.Kf2 Nh2 4.Rh1 Ng4+ 5.Ke2
>  ³  (-0.49)   Depth: 6/12   00:00:00
>1...b6 2.Bxe5 Bxg2 3.Nc4 Bxf1 4.Nxb6
>  ³  (-0.50)   Depth: 6/12   00:00:00
>1...b6 2.Bxe5 Bxg2 3.Kxg2 Rd2+ 4.Kh3 Rxe5
>  ³  (-0.53)   Depth: 6/12   00:00:00
>1...b6 2.Bxe5 Bxg2 3.Kxg2 Rxe5 4.f6 Rg5
>  ³  (-0.36)   Depth: 7/14   00:00:00  81kN
>1...b5 2.Bxe5 Bxg2 3.Kxg2 Rxe5 4.f6 Rg5
>  ³  (-0.37)   Depth: 7/14   00:00:00  119kN
>1...b5 2.Bxe5 Bxg2 3.Kxg2 Rxe5 4.f6 Rg5
>  ³  (-0.43)   Depth: 7/14   00:00:00  123kN
>1...b5 2.Bxf3 Nxf3+ 3.Kf2 Kf8 4.Rh1 h4 5.gxh4 c5
>  =  (-0.18)   Depth: 8/16   00:00:00  170kN
>1...b5 2.Bxf3 Nxf3+ 3.Kf2 Kf8 4.Rh1 c5 5.Rxh5
>  =  (0.08)   Depth: 8/16   00:00:00  190kN
>1...Kf8 2.Bxf3 Nxf3+ 3.Kf2 Nd4 4.Bxd4 Rxd4 5.f6
>  =  (0.07)   Depth: 8/16   00:00:00  229kN
>1...Kf8 2.Bxf3 Nxf3+ 3.Kf2 Nd4 4.Bxd4 Rxd4 5.Rh1 c5 6.bxc5
>  =  (-0.12)   Depth: 8/16   00:00:00  247kN
>1...Bxg2 2.Kxg2 Kf8 3.Rf4 Nf3 4.g7+ Kf7 5.Rh4 Nxh4+ 6.Kf2 b5 7.g8Q+ Kxg8 8.gxh4
>  =  (-0.13)   Depth: 8/16   00:00:00  275kN
>1...Bxg2 2.Kxg2 Kf8 3.Rf4 Nf3 4.f6 Re6 5.Kf2 b5
>  =  (-0.14)   Depth: 8/16   00:00:00  312kN
>1...b6 2.Bxe5 Bxg2 3.Kxg2 Rxe5 4.Rh1 Rd2+ 5.Kf1 c5 6.Rxh5 cxb4
>  =  (-0.15)   Depth: 8/16   00:00:00  329kN
>1...b6 2.Bxe5 Bxg2 3.Kxg2 Rxe5 4.f6 Rd2+ 5.Rf2 Rxf2+ 6.Kxf2 Rg5
>  =  (-0.24)   Depth: 8/16   00:00:00  341kN
>1...b6 2.Bxf3 Nxf3+ 3.Kf2 c5 4.bxc5 Kf8 5.cxb6
>  =  (0.01)   Depth: 9/18   00:00:00  563kN
>1...b6 2.Bxf3 Nxf3+ 3.Kf2 Nd4 4.f6 Kf8 5.Bxd4 Rxd4 6.Ke2 Red8
>  =  (0.14)   Depth: 9/18   00:00:00  614kN
>1...Bxg2 2.Kxg2
>  =  (0.13)   Depth: 9/18   00:00:00  622kN
>1...Bxg2 2.Kxg2 Ng4 3.Nxg4 b5 4.Rh1 c5 5.Rxh5 cxb4
>  =  (0.13)   Depth: 9/18   00:00:01  762kN
>1...Kf8 2.Bxf3 Nxf3+ 3.Kf2 Nd4 4.Bxd4 Rxd4 5.Rd1 Rxd1 6.Nxd1 b5
>  =  (0.12)   Depth: 9/18   00:00:01  814kN
>1...Kf8 2.Bxf3 Nxf3+ 3.Kf2 Nd4 4.Rh1 Nb5 5.Bb2 Rd2+ 6.Ke1 Red8 7.Rxh5
>  =  (-0.01)   Depth: 9/18   00:00:01  854kN
>1...Ng4 2.f6 Nxe3 3.f7+ Kf8 4.fxe8Q+ Kxe8 5.Rf2 Bxg2 6.Rxg2 Nxg2 7.Kxg2
>  =  (-0.02)   Depth: 9/18   00:00:01  915kN
>1...Ng4 2.f6 Nxe3 3.f7+ Kf8 4.fxe8Q+ Rxe8 5.Rxf3+ exf3 6.Be1
>  ³  (-0.37)   Depth: 9/18   00:00:01  962kN
>1...Ng4 2.f6 Nxe3 3.f7+ Kf8 4.Bxf3 Nxc2 5.fxe8Q+ Kxe8 6.Bxe4 Nxa3
>  ³  (-0.37)   Depth: 9/18   00:00:01  983kN
>1...Ng4 2.f6 Nxe3 3.f7+ Kf8 4.Bxf3 Nxc2 5.fxe8Q+ Rxe8 6.Bxh5+ Ke7
>  =  (-0.12)   Depth: 10/20   00:00:01  1086kN
>1...Ng4 2.f6 Nxe3 3.f7+ Kf8 4.Bxf3 Nxc2 5.fxe8Q+ Kxe8 6.Bxe4 Nxb4 7.Bxb4
>  ²  (0.38)   Depth: 10/20   00:00:01  1123kN
>1...Ng4 2.f6 Re6 3.Bxf3 exf3 4.Rxf3 Nxf6 5.Bxf6 Rf8 6.g4 Rfxf6 7.Rxf6 Rxf6
>8.gxh5
>  ±  (0.80)   Depth: 10/20   00:00:01  1270kN
>1...Bxg2 2.Kxg2 b6 3.Rh1 b5 4.Rxh5 Rd6 5.Kf2 Kf8 6.Rh8+ Kg7
>  ±  (0.79)   Depth: 10/20   00:00:02  1517kN
>1...Bxg2 2.Kxg2 Rd7 3.Rh1 c5 4.bxc5 Rc7 5.Nd5 Rc6 6.Rxh5 Rxc5
>  ±  (0.74)   Depth: 10/20   00:00:02  1762kN
>1...Kf8 2.Bxf3 Nxf3+ 3.Kf2
>  ±  (0.73)   Depth: 10/20   00:00:02  1794kN
>1...Kf8 2.Bxf3 Nxf3+ 3.Kf2 c5 4.Rh1 cxb4 5.Nf1 bxc3 6.Rxh5
>  ²  (0.38)   Depth: 10/20   00:00:02  1829kN
>1...Kf8 2.Bxf3 Nxf3+ 3.Kf2 Nd4 4.Rh1 Nb5 5.Bb2 Rd2+ 6.Ke1 Red8 7.Rxh5
>  =  (-0.01)   Depth: 10/20   00:00:02  1924kN
>1...Kf8 2.Bxf3 Nxf3+ 3.Kf2 Nd4 4.Rh1 Nb5 5.Bb2 c5 6.Rxh5 cxb4 7.axb4
>  =  (-0.02)   Depth: 11/22   00:00:03  2637kN
>1...Kf8 2.Bxf3 exf3 3.Bxe5 Rxe5 4.Rxf3 Rd2 5.f6 Rg5 6.g7+ Kf7 7.Nc4 Rd4 8.Na5
>Rb5
>  =  (0.20)   Depth: 12/24   00:00:05  4266kN
>1...b5 2.Bxf3 exf3 3.Bxe5 Rxe5 4.Rxf3 c5 5.bxc5 Rxc5 6.Kf2 Kg7 7.Rf4
>  =  (0.19)   Depth: 12/24   00:00:07  5723kN
>1...b5 2.Bxf3 exf3 3.Bxe5 Rxe5 4.Rxf3 Kg7 5.g4 hxg4 6.Nxg4 Re2 7.Rf2 Rdd2 8.Rxe2
>Rxe2
>  =  (0.04)   Depth: 12/24   00:00:07  5930kN
>1...b5 2.Bxf3 exf3 3.Bxe5 Rxe5 4.Rxf3 Kg7 5.Kf1 c5 6.g4 Rde8 7.f6+ Kxg6 8.bxc5
>Kf7 9.gxh5 Rxh5
>  =  (0.05)   Depth: 13/25   00:00:10  7775kN
>1...b5 2.Bxf3 exf3 3.Bxe5 Rxe5 4.Rxf3 Kg7 5.Kf1 c5 6.g4 h4 7.bxc5 Rxc5 8.Ke2 Rc3
>9.Rh3 Rxa3
>  =  (-0.04)   Depth: 14/26   00:00:16  12363kN
>1...b5 2.Bxf3 exf3 3.Bxe5 Rxe5 4.Rxf3 Kg7 5.g4 hxg4 6.Nxg4 Re2 7.Rf2 Rd1+ 8.Kg2
>Rdd2 9.Rxe2
>  =  (-0.11)   Depth: 15/27   00:00:26  19651kN
>1...b5 2.Kf2 Ng4+ 3.Nxg4 hxg4 4.f6 Re6 5.Ke3 Rdd6 6.Bxf3 gxf3 7.g4 Kf8 8.g5 c5
>9.bxc5
>  =  (0.13)   Depth: 16/28   00:00:54  40960kN
>1...b5 2.Kf2 Ng4+ 3.Nxg4 hxg4 4.f6 Re6 5.Ke3 Rdd6 6.Bxf3 gxf3 7.g4 Kf8 8.g5 Rxf6
>9.Bxf6
>  ²  (0.38)   Depth: 17/29   00:01:48  78577kN
>1...b5 2.Kf2 Ng4+ 3.Nxg4 hxg4 4.f6 e3+ 5.Kg1 Kf8 6.Bxf3 gxf3 7.Rxf3 Re6 8.Kf1
>Rd1+ 9.Ke2 Kg8
>  ±  (0.76)   Depth: 17/29   00:02:15  98480kN
>1...Kf8 2.Bxf3 exf3 3.Bxe5 Rxe5 4.Rxf3 Rd2 5.Kf1 b5 6.f6
>  ±  (0.75)   Depth: 17/29   00:02:45  119178kN
>1...Kf8 2.Bxf3 exf3 3.Bxe5 Rxe5 4.Rxf3 c5 5.b5
>  ²  (0.40)   Depth: 17/29   00:03:04  133207kN
>1...Kf8 2.Bxf3 exf3 3.Bxe5 Rxe5 4.Rxf3 Kg7 5.Kf1 Rd4 6.Ke2 Kf6 7.c3 Rd8 8.Rf4
>Rde8 9.g4 h4
>  =  (0.08)   Depth: 17/29   00:03:45  162499kN
>1...Kf8 2.Bxf3 exf3 3.Bxe5 Rxe5 4.Rxf3 Kg7 5.Kg2 Re4 6.f6+ Kxg6 7.Kh3 Rxe3 8.Kg2
>Rxa3 9.Rxa3 Kxf6
>  =  (0.01)   Depth: 18/30   00:05:35  239948kN
>
>(W,  17.04.2002)
>
>W,S - Deep Fritz
>3rr1k1/1p6/2p3P1/4nP1p/pP2p3/P1B1NbP1/2P3B1/5RK1 b - - 0 1
>
>Analysis by Deep Fritz:
>
>1...Ng4!
>  ³  (-0.31)   Depth: 2/9   00:00:00
>1...Rd7 2.Bxf3 Nxf3+ 3.Kf2
>  =  (-0.16)   Depth: 5/15   00:00:00  19kN
>1...Rd7 2.Bxf3 Nxf3+ 3.Kf2
>  =  (-0.16)   Depth: 5/15   00:00:00  19kN
>1...Rd7 2.Bxf3 Nxf3+ 3.Kf2
>  =  (-0.16)   Depth: 5/15   00:00:00  19kN
>1...Rd7 2.Bxf3 Nxf3+ 3.Kf2
>  =  (-0.16)   Depth: 5/15   00:00:00  19kN
>1...Rd7 2.Bxf3 Nxf3+ 3.Kf2
>  =  (-0.16)   Depth: 5/15   00:00:00  19kN
>1...Rd7 2.Bxf3 Nxf3+ 3.Kf2
>  =  (-0.16)   Depth: 5/15   00:00:00  19kN
>1...Rd7 2.Bxf3 Nxf3+ 3.Kf2
>  =  (-0.16)   Depth: 5/15   00:00:00  19kN
>1...Rd7 2.Bxf3 Nxf3+ 3.Kf2
>  =  (-0.16)   Depth: 5/15   00:00:00  19kN
>1...Rd7 2.Bxf3 Nxf3+ 3.Kf2
>  =  (-0.16)   Depth: 5/15   00:00:00  19kN
>1...Rd7 2.Bxf3 Nxf3+ 3.Kf2
>  =  (-0.16)   Depth: 5/15   00:00:00  19kN
>1...Rd7 2.Bxf3 Nxf3+ 3.Kf2
>  =  (-0.16)   Depth: 5/15   00:00:00  19kN
>1...Rd7 2.Bxf3 Nxf3+ 3.Kf2
>  =  (-0.16)   Depth: 5/15   00:00:00  19kN
>1...Rd7 2.Bxf3 Nxf3+ 3.Kf2
>  =  (-0.16)   Depth: 5/15   00:00:00  19kN
>1...Rd7 2.Bxf3 Nxf3+ 3.Kf2
>  =  (-0.16)   Depth: 5/15   00:00:00  19kN
>1...Rd7 2.Bxf3 Nxf3+ 3.Kf2
>  =  (-0.16)   Depth: 5/15   00:00:00  19kN
>1...Rd7 2.Bxf3 Nxf3+ 3.Kf2
>  =  (-0.16)   Depth: 5/15   00:00:00  19kN
>1...Rd7 2.Bxf3 Nxf3+ 3.Kf2
>  =  (-0.16)   Depth: 5/15   00:00:00  19kN
>1...Rd7--
>  =  (0.00)   Depth: 6/15   00:00:00  26kN
>1...Rd7-- 2.Bxe5 Bxg2 3.Kxg2 Rxe5 4.f6 Kf8
>  ²  (0.62)   Depth: 6/19   00:00:00  32kN
>1...Bxg2!
>  ²  (0.59)   Depth: 6/19   00:00:00  34kN
>1...Bxg2! 2.Kxg2 Kf8 3.Rh1 Ng4 4.Nxg4 hxg4 5.Rh8+ Ke7 6.Rh7+ Kd6
>  ²  (0.37)   Depth: 6/19   00:00:00  43kN
>1...b6!
>  ²  (0.34)   Depth: 6/19   00:00:00  45kN
>1...b6! 2.Bxf3
>  =  (0.19)   Depth: 6/19   00:00:00  50kN
>1...Ng4!
>  =  (0.00)   Depth: 6/19   00:00:00  63kN
>1...Ng4! 2.Nxg4 hxg4 3.f6 Kf8 4.Kh2 b6
>  =  (-0.06)   Depth: 6/19   00:00:00  68kN
>1...Ng4 2.Nxg4 hxg4 3.f6 Kf8 4.b5 c5 5.b6
>  =  (0.22)   Depth: 7/17   00:00:00  91kN
>1...Ng4 2.f6 Nxe3 3.Bxf3 exf3
>  =  (0.22)   Depth: 8/22   00:00:00  233kN
>1...Ng4 2.f6 Nxe3 3.Bxf3 exf3 4.f7+ Kf8 5.fxe8Q+ Kxe8 6.Rxf3 Nxc2
>  =  (0.22)   Depth: 9/23   00:00:00  506kN
>1...Ng4 2.f6 Kf8 3.Nxg4 hxg4 4.b5 Rd5 5.bxc6 bxc6 6.Bb4+ c5 7.c4
>  =  (0.09)   Depth: 10/26   00:00:00  1105kN
>1...Ng4 2.f6 Kf8 3.Nf5 Rd5 4.Bxf3 Rxf5 5.Bxg4 Rxf1+ 6.Kxf1 hxg4 7.Ke2
>  =  (0.19)   Depth: 11/28   00:00:01  2425kN
>1...Ng4 2.f6 Kf8 3.Nf5 Bxg2 4.Kxg2 Re6 5.Ng7 Red6 6.Kg1 Ne3
>  =  (0.09)   Depth: 12/31   00:00:03  5846kN
>1...Ng4 2.f6 Kf8 3.Nf5 Bxg2 4.Kxg2 Re6 5.Ng7 Red6 6.Kg1 Ne3
>  =  (0.12)   Depth: 13/31   00:00:07  12081kN
>1...Ng4 2.f6 Kf8 3.Nf5 Bxg2 4.f7 Re5 5.Kxg2 Rxf5 6.g7+ Kxf7 7.Rxf5+
>  =  (0.25)   Depth: 14/32   00:00:14  23676kN
>1...Ng4--
>  ²  (0.56)   Depth: 15/31   00:00:31  50023kN
>1...Ng4--
>  ²  (0.56)   Depth: 15/40   00:00:46  75440kN
>1...b5!
>  ²  (0.53)   Depth: 15/40   00:01:20  127381kN
>1...b5! 2.Bxf3 exf3 3.Bxe5 Rxe5 4.Rxf3 Kg7 5.g4 hxg4 6.Nxg4 Re2 7.Nf2
>  =  (0.19)   Depth: 15/40   00:01:28  140330kN
>1...b5 2.Bxf3 exf3 3.Bxe5 Rxe5 4.Rxf3 Kg7 5.g4 hxg4 6.Nxg4 Re2 7.Nf2
>  =  (0.22)   Depth: 16/35   00:02:08  203032kN
>1...b5 2.Bxf3 exf3 3.Bxe5 Rxe5 4.Rxf3 Kg7 5.g4 hxg4 6.Nxg4 Re2 7.Nf2
>  =  (0.19)   Depth: 17/40   00:03:53  373756kN
>
>(W,  17.04.2002)
>
>
>              clearing hash tables
>              time surplus   0.00  time limit 5:00 (5:00)
>         nss  depth   time  score   variation (1)
>starting thread 1
>                6     0.14  -0.06   1. ... c5 2. bxc5 Kf8 3. Bxe5 Rxe5
>                                    4. Bxf3 exf3 5. Rxf3 Rxc5
>                6     0.15  -0.27   1. ... Kf8 2. Bxe5 Rxe5 3. f6 Bxg2
>                                    4. g7+ Kf7 5. Kxg2
>         (3)    6->   0.18  -0.27   1. ... Kf8 2. Bxe5 Rxe5 3. f6 Bxg2
>                                    4. g7+ Kf7 5. Kxg2
>         (2)    7     0.26  -0.44   1. ... Kf8 2. Bxe5 Rxe5 3. Bxf3 exf3
>                                    4. Rxf3 Kg7 5. g4 h4
>                7     0.39  -0.50   1. ... b5 2. Bxe5 Rxe5 3. Bxf3 exf3
>                                    4. Rxf3 Kg7 5. g4 h4
>         (2)    7->   0.39  -0.50   1. ... b5 2. Bxe5 Rxe5 3. Bxf3 exf3
>                                    4. Rxf3 Kg7 5. g4 h4
>                8     0.53  -0.17   1. ... b5 2. Bxf3 exf3 3. Bxe5 Rxe5
>                                    4. Rxf3 Kg7 5. g4 Rde8 6. Kf2 <HT>
>                8->   0.78  -0.17   1. ... b5 2. Bxf3 exf3 3. Bxe5 Rxe5
>                                    4. Rxf3 Kg7 5. g4 Rde8 6. Kf2 <HT>
>                9     1.39  -0.53   1. ... b5 2. Kf2 Ng4+ 3. Nxg4 hxg4
>                                    4. f6 Kf8 5. Kg1 Bxg2 6. Kxg2 e3 7.
>                                    Rf5
>                9->   1.50  -0.53   1. ... b5 2. Kf2 Ng4+ 3. Nxg4 hxg4
>                                    4. f6 Kf8 5. Kg1 Bxg2 6. Kxg2 e3 7.
>                                    Rf5
>               10     1.95  -0.46   1. ... b5 2. Kf2 Ng4+ 3. Nxg4 hxg4
>                                    4. f6 Kf8 5. Re1 Bxg2 6. Kxg2 e3 7.
>                                    Re2 Re4
>               10->   2.53  -0.46   1. ... b5 2. Kf2 Ng4+ 3. Nxg4 hxg4
>                                    4. f6 Kf8 5. Re1 Bxg2 6. Kxg2 e3 7.
>                                    Re2 Re4
>               11     3.59  -0.20   1. ... b5 2. Kf2 Ng4+ 3. Nxg4 hxg4
>                                    4. f6 e3+ 5. Kg1 Re6 6. Bxf3 gxf3 7.
>                                    Rxf3 Kf8 8. Kf1 Re4
>               11     7.76  -0.36   1. ... Kf8 2. Bxe5 Rxe5 3. Bxf3 exf3
>                                    4. Rxf3 Kg7 5. g4 hxg4 6. Nxg4 Rd1+
>                                    7. Kh2 Rd2+ 8. Kg3 Ree2
>         (3)   11->   8.40  -0.36   1. ... Kf8 2. Bxe5 Rxe5 3. Bxf3 exf3
>                                    4. Rxf3 Kg7 5. g4 hxg4 6. Nxg4 Rd1+
>                                    7. Kh2 Rd2+ 8. Kg3 Ree2
>         (2)   12    10.12  -0.19   1. ... Kf8 2. Bxe5 Rxe5 3. Bxf3 exf3
>                                    4. Rxf3 Kg7 5. g4 h4 6. g5 Rd2 7. Rf2
>                                    Rd4 8. Rf3
>         (2)   12->  16.04  -0.19   1. ... Kf8 2. Bxe5 Rxe5 3. Bxf3 exf3
>                                    4. Rxf3 Kg7 5. g4 h4 6. g5 Rd2 7. Rf2
>                                    Rd4 8. Rf3
>               13    48.07  -0.05   1. ... Kf8 2. Re1 b5 3. Bxf3 Nxf3+
>                                    4. Kf2 Nxe1 5. Kxe1 Ke7 6. f6+ Ke6
>                                    7. f7 Rf8 8. Bg7 Ke7 9. Bxf8+ Kxf8
>         (2)   13->   1:22  -0.05   1. ... Kf8 2. Re1 b5 3. Bxf3 Nxf3+
>                                    4. Kf2 Nxe1 5. Kxe1 Ke7 6. f6+ Ke6
>                                    7. f7 Rf8 8. Bg7 Ke7 9. Bxf8+ Kxf8
>               14     1:49  -0.19   1. ... Kf8 2. Bxe5 Rxe5 3. Bxf3 exf3
>                                    4. Rxf3 c5 5. b5 Kg7 6. g4 h4 7. g5
>                                    Rd2 8. Rf2 Rd4 9. Rf3
>         (2)   14->   2:31  -0.19   1. ... Kf8 2. Bxe5 Rxe5 3. Bxf3 exf3
>                                    4. Rxf3 c5 5. b5 Kg7 6. g4 h4 7. g5
>                                    Rd2 8. Rf2 Rd4 9. Rf3
>               15     3:16  -0.20   1. ... Kf8 2. Bxe5 Rxe5 3. Bxf3 exf3
>                                    4. Rxf3 Kg7 5. g4 hxg4 6. Nxg4 Re2
>                                    7. Rf2 Rdd2 8. Rxe2 Rxe2 9. c3 Rc2
>                                    10. Ne5 Rxc3
>         (3)   15->   4:52  -0.20   1. ... Kf8 2. Bxe5 Rxe5 3. Bxf3 exf3
>                                    4. Rxf3 Kg7 5. g4 hxg4 6. Nxg4 Re2
>                                    7. Rf2 Rdd2 8. Rxe2 Rxe2 9. c3 Rc2
>                                    10. Ne5 Rxc3
>              time=5:00  cpu=214%  mat=-1  n=493704758  fh=90%  nps=1644k
>              ext-> chk=15402349 cap=2148800 pp=3880716 1rep=725371 mate=40797 s
>ing=0
>              predicted=0  nodes=493704758  evals=0
>              endgame tablebase-> probes done=0  successful=0
>              hashing-> trans/ref=25%  pawn=99%  used=99%
>              SMP->  split=1654  stop=287  data=9/32  cpu=10:44  elap=5:00

Good Lord, your machine is fast, fast, fast! What is it -- I think I saw one of
your posts about this but can't quite remember, something like 2x1.7 GHz Athlon?
It seems roughly 6x as quick as PIII-850 with Junior 7 (assuming Deep Junior 7
is much the same program), whereas I would have guessed only 4x. The Shredder
analysis was strange -- I guess this is the only program that improves on slower
hardware! Supporting this, there was a post by Nemeth that Shredder did not play
the awful moves that led to its dismal defeat by Smirin on his slower system.
And then there's Crafty; every time I see it fail at a tactical problem, I gain
greater respect for its positional abilities, since this MUST be the way it
stays at the top (versus other non-professional programs, that is). Rightly or
wrongly, DB rejected Deep Fritz's eventual choice of 36...b5 after reaching
depth 11(6) -- this had been DB's move at depth 10(6) [whatever that means; 16
full-width? 10 full, 6 selective? 10 with a selective component plus 6
full-width?].

Regards,
Vine Smith



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