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Subject: Re: How many programs can find the drawish move 26.h3!

Author: Timothy J. Frohlick

Date: 13:47:19 05/12/03

Go up one level in this thread


Shredder doesn't even consider the insipid h3 move.




Shredder 7.04 -AMD 1500Mhz 512 MB RAM 128 MB Hash
2b2rk1/Rp5p/3pPqpQ/2nP4/4pp2/8/P1RN1PPP/6K1 w - - 0 1

Analysis by Shredder 7.04:

1.Qxf8+ Kxf8
  -+  (-2.68)   Depth: 1/2   00:00:00
1.Qxf8+ Kxf8
  -+  (-2.43)   Depth: 1/2   00:00:00
1.Rxc5 dxc5
  ³  (-0.63)   Depth: 1/2   00:00:00
1.Rxc5 dxc5
  ²  (0.34)   Depth: 1/2   00:00:00
1.Rxc5 dxc5 2.Nxe4
  +-  (3.89)   Depth: 1/3   00:00:00
1.Nc4
  +-  (4.82)   Depth: 1/3   00:00:00
1.Nc4
  +-  (4.82)   Depth: 1/3   00:00:00
1.Nc4 Bxe6 2.Nxd6
  +-  (4.31)   Depth: 2/4   00:00:00
1.Nc4 Qa1+ 2.Rc1 Qxc1#
  -+  (-#2)   Depth: 2/4   00:00:00
1.Nc4 Qa1+ 2.Rc1 Qxc1#
  -+  (-#2)   Depth: 2/4   00:00:00
1.Qxf8+ Kxf8 2.Rxc5
  -+  (-#2)   Depth: 2/4   00:00:00
1.Qxf8+ Qxf8 2.Nc4
  -+  (-2.24)   Depth: 2/8   00:00:00
1.Rxc5 Qa1+ 2.Nf1 dxc5
  µ  (-0.72)   Depth: 2/8   00:00:00
1.Rxc5 Qa1+ 2.Nf1 dxc5
  =  (0.25)   Depth: 2/8   00:00:00
1.Rxc5 Qa1+ 2.Rc1 Qxc1+ 3.Nf1
  ±  (1.39)   Depth: 2/8   00:00:00
1.f3 Bxe6
  +-  (1.79)   Depth: 2/8   00:00:00
1.f3 Qd4+ 2.Kf1
  +-  (2.24)   Depth: 2/8   00:00:00
1.f3 Qd4+ 2.Kh1 Qxd5
  +-  (2.48)   Depth: 2/8   00:00:00
1.Rc4 Nxe6
  +-  (2.59)   Depth: 2/8   00:00:00
1.Rc4 Bxe6 2.dxe6 Qxe6
  +-  (3.07)   Depth: 2/8   00:00:00
1.Rc4 Bxe6 2.dxe6 Qxe6
  +-  (3.79)   Depth: 2/8   00:00:00
1.Rc4 Qe5 2.Qg5 Qxg5
  +-  (3.54)   Depth: 3/8   00:00:00
1.Rc4 Qe5 2.a4 Qxd5
  +-  (3.04)   Depth: 3/8   00:00:00
1.Rc4 Qe5 2.f3 Qxd5 3.fxe4 Qxd2
  +-  (2.79)   Depth: 3/8   00:00:00
1.Rc1 Qd4 2.Nc4 Qxd5
  +-  (2.83)   Depth: 3/8   00:00:00
1.Rc1 Qe5 2.Nb3 Qxd5 3.Nxc5 dxc5
  +-  (2.89)   Depth: 3/9   00:00:00
1.Nb3 Bxe6 2.dxe6 Nxb3
  +-  (2.95)   Depth: 3/9   00:00:00
1.Nb3 Bd7 2.exd7 Nxd7
  +-  (3.58)   Depth: 3/9   00:00:00
1.Nb3 Nxe6 2.dxe6 Qxe6
  +-  (4.34)   Depth: 3/10   00:00:00
1.Nb3 Qe5 2.Qxh7+ Kxh7 3.Rxb7+ Bxb7
  +-  (4.09)   Depth: 4/11   00:00:00
1.Nb3 Qe5 2.Qxh7+ Kxh7 3.Rxb7+ Bxb7
  +-  (3.59)   Depth: 4/12   00:00:00
1.Nb3 Bd7 2.exd7 Qa1+ 3.Nxa1
  +-  (3.59)   Depth: 4/12   00:00:00
1.Nb3 Qe5 2.Rd2 Nd3 3.Qg7+ Qxg7
  +-  (3.34)   Depth: 5/12   00:00:00
1.Nb3 Qe5 2.Rc1 Qxd5 3.e7 b6
  +-  (3.34)   Depth: 5/16   00:00:00
1.Nb3 Qe5 2.Rc1 Qxd5 3.e7 Re8 4.Nxc5 dxc5
  +-  (3.47)   Depth: 6/17   00:00:01  47kN
1.Nb3 Qe5 2.Rc1 e3 3.fxe3 fxe3 4.Rxc5 dxc5 5.Qxg6+ hxg6
  +-  (3.22)   Depth: 7/19   00:00:01  87kN
1.Nb3 Qe5 2.Rc1 e3 3.Nxc5 exf2+ 4.Kf1 Qh5 5.Qxh5
  +-  (3.22)   Depth: 7/21   00:00:01  100kN
1.h4 Qe5 2.h5 Nxe6 3.dxe6 gxh5
  +-  (3.23)   Depth: 7/24   00:00:01  175kN
1.h4 Qe5 2.h5 gxh5 3.Nc4 Qxd5 4.e7
  +-  (3.31)   Depth: 7/24   00:00:01  188kN
1.h4 Qe5 2.h5 gxh5 3.Nc4 Qxd5 4.Qxf4 Rxf4
  +-  (3.06)   Depth: 8/24   00:00:01  224kN
1.h4 Qe5 2.Qg5 Qa1+ 3.Nf1 Qb1 4.Rd2 f3 5.e7
  +-  (3.05)   Depth: 8/24   00:00:01  290kN
1.h4 Qf5 2.Qg5 Bxe6 3.dxe6 Nxe6 4.Qxf5 Rf6 5.Qxf6
  +-  (3.26)   Depth: 9/26   00:00:03  712kN
1.h4 Qe5 2.Qg5 Qa1+ 3.Nf1 f3 4.g3 Qd4 5.e7 Re8 6.Ne3
  +-  (3.08)   Depth: 10/28   00:00:06  1737kN
1.h4 Qe5 2.h5 gxh5 3.Nc4 Qxd5 4.e7 Qd1+ 5.Kh2 Re8 6.Nxd6 Rxe7 7.Rxc5 Rg7
  +-  (3.33)   Depth: 11/30   00:00:14  3819kN
1.h4 Qf5 2.Qg5 Bxe6 3.dxe6 Qxe6 4.Nc4 e3 5.Nxe3 fxe3 6.Qxe3 Qxe3
  +-  (3.33)   Depth: 11/31   00:00:17  4918kN
1.h4 Qa1+ 2.Nf1 Qf6 3.Rc4 f3 4.g3 Qf5 5.Ne3 Qh3 6.Rb4 Bxe6 7.dxe6 Qxe6
  +-  (3.30)   Depth: 12/34   00:00:32  8770kN
1.h4 Qa1+ 2.Nf1 Qf6 3.Qg5 Kg7 4.Nd2 Qa1+ 5.Kh2 Kg8 6.e7 Re8 7.Nc4 Qd1 8.Rc3 Na4
  +-  (3.33)   Depth: 13/38   00:00:58  15847kN
1.h4 Qd4 2.e7 Re8 3.Qxf4 Bf5 4.g4 Nd3 5.Qe3 Qa1+ 6.Nf1 Bxg4 7.Rxb7 Nc5 8.Ra7 Qf6
9.Qg3 Bf3
  +-  (3.25)   Depth: 14/44   00:02:25  40635kN

(Frohlick, Albuquerque 12.05.2003)




On May 12, 2003 at 15:09:08, Jorge Pichard wrote:

>In the Second game Kasparov was very upset at the board soon after playing
>(diagram) 25...Qa1+. He realized a few moves later that White could force him to
>take a perpetual check draw with a surprising queen sacrifice. In the press
>conference he said that he thought he had a forced win with the queen check, but
>that in hindsight 25...f4 would have been stronger.
>
>
>Junior co-programmer Amir Ban quotes someone from Kasparov's team as saying
>afterwards that 25...f4 26.h3! was also a draw. We can't be sure yet what Junior
>would have played. My DJ 7 wants to play 26.Nf1, which would allow black a very
>strong attack after 26...e3.
>
>
>
>Fritz 8 and Chess Tiger 15 both changed from 26.h3! to h4?! is 26.h4?! a better
>move here?
>
>
>[D]2b2rk1/Rp5p/3pPqpQ/2nP4/4pp2/8/P1RN1PPP/6K1 w - - 0 1
>
>Analysis by Fritz 8:
>
>2.Ra3
>  ±  (1.13)   Depth: 6/29   00:00:00  146kN
>2.Qh3 e3 3.Nf1 exf2+ 4.Kh1 f3 5.Qxf3 Qxf3
>  ±  (1.16)   Depth: 6/29   00:00:00  175kN
>  ±  (1.38)   Depth: 6/29   00:00:00  180kN
>2.h3!
>  +-  (1.41)   Depth: 6/29   00:00:00  189kN
>2.h4 Qa1+ 3.Nf1 Qe5 4.Qg5 Qd4 5.Ra8 Qg7 6.h5 gxh5 7.Qh4 b6 8.Nd2
>  +-  (1.44)   Depth: 6/29   00:00:00  225kN
>  +-  (1.94)   Depth: 12/37   00:00:26  12830kN
>
>
>
>Analysis by Chess Tiger 15.0:
>
>1.h4 Qa1+ 2.Nf1 e3 3.e7 Re8 4.fxe3 Bf5 5.Rc4 Rxe7 6.exf4
>  +-  (3.50)   Depth: 6   00:00:00  149kN
>  +-  (2.76)   Depth: 7   00:00:00  307kN
>1.h3 Qf5 2.Rc4 Qxd5 3.e7 Re8 4.Qxf4 Rxe7 5.Ra8 Qe6 6.Rb8
>  +-  (2.90)   Depth: 7   00:00:01  495kN
>  +-  (2.30)   Depth: 10   00:00:13  4399kN



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