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Subject: Tiger 14 needs two hours to find it

Author: Dadi Jonsson

Date: 02:18:25 11/01/02

Go up one level in this thread


On October 31, 2002 at 22:07:16, K. Burcham wrote:

>
>This game was played in 1990, so it wasn't Morphy who found this move. I also
>think that few (if any) programs would find this move under tournament
>time-controls (unless you piled a number of CPUs on it).
>
>Dadi Jonsson
>
>
> [D] rn1r2k1/pq1p1ppp/3Rp3/2p5/2P1b3/4QNP1/P3PPBP/3R2K1 w - - 0 1
>
>Deep Junior 7:
>
>17.Qf4 Rf8 18.h4 f5 19.Qc1 f4 20.gxf4 Bxf3 21.Bxf3
>  =  (0.10)   Depth: 15   00:00:07  9996kN
>17.Qxc5 h6 18.Qd4 f5 19.Qc3 Rf8 20.a4 f4 21.gxf4
>  ²  (0.42)   Depth: 15   00:00:29  27721kN
>17.Qxc5 Nc6 18.Qe3 Bc2 19.Rc1 Qb4 20.Rd2 Ba4 21.a3 Qb6 22.c5 Qb5 23.Nd4 Qb7
>24.Qf4 Rab8 25.Nxc6
>  ²  (0.28)   Depth: 17   00:01:09  147517kN
>17.Qxc5 Nc6 18.Qe3 Bc2 19.Rc1 Qb4 20.Rd2 Ba4 21.a3 Qb6 22.c5 Qb5 23.Nd4 Nxd4
>24.Rxd4 Rab8 25.Rb4 Qa6
>  ²  (0.27)   Depth: 18   00:02:27  293181kN
>17.Qxc5 Nc6 18.Qe3 Bc2 19.Rc1 Qb4 20.Qd2 Be4 21.Qxb4 Nxb4 22.Rcd1 Nxa2 23.Rxd7
>Rdc8 24.Kf1
>  =  (0.24)   Depth: 19   00:05:16  598537kN
>17.Rxe6 fxe6 18.Ng5 Nc6 19.Qxe4 g6 20.Qh4 h5 21.Ne4 Qb2 22.Nf6+ Kf7 23.Nxd7 Rdc8
>24.Qf4+ Kg7
>  ²  (0.45)   Depth: 19   00:08:24  828665kN
>17.Rxe6 fxe6 18.Ng5 Nc6 19.Qxe4 g6 20.Qh4 h5 21.Ne4 Qb2 22.Nf6+ Kf7 23.Nxd7 Rdc8
>24.Bxc6 Rxc6 25.Qf4+ Kg7
>  ²  (0.35)   Depth: 20   00:09:48  1085951kN
>17.Rxe6!
>  ²  (0.65)   Depth: 21   00:19:55  2185410kN
>17.Rxe6 fxe6 18.Ng5 Nc6 19.Qxe4 g6 20.Qh4 h5 21.Qe4 Kg7 22.Qf4 Rf8 23.Qd6 Rae8
>24.Qxd7+ Qxd7 25.Rxd7+ Kh6 26.f4
>  ±  (0.87)   Depth: 22   00:40:18  137816kN

These are the thoughts of Tiger 14 on an AMD 1400 (512mb. mem). It finds the
move at depth 17 after more than two hours, with a score of +0.92:

[+0.40]  d=12   17.Qxc5 Nc6 18.Qh5 h6 19.Qh4 Nb4 20.R1d4 f5 21.a4 Rab8 22.Qf4
Nc2 (0:00.25)
[+0.48]  d=12   17.Bf1 h6 18.R1d2 a5 19.Ne5 f6 20.Nd3 Bxd3 21.Qxd3 Ra6 22.Qg6
Rxd6 23.Rxd6 (0:00.57)
[+0.56]  d=13   17.Bf1 Bxf3 18.exf3 Qc8 19.Bd3 Na6 20.Be4 Rb8 21.Qg5 f6 22.Qd2
Rb6 23.Rxd7 Rxd7 24.Qxd7 (0:01.31)
[+0.50]  d=14   17.Bf1 Bxf3 18.exf3 Qc7 19.Bd3 f5 20.Bc2 a5 21.Kg2 Ra6 22.Qe5
Rxd6 23.Rxd6 Na6 24.f4 (0:02.15)
[+0.58]  d=14   17.Qxc5 Nc6 18.Qe3 Na5 19.Qc3 Nc6 20.Bh3 Bg6 21.Ng5 h6 22.Bg2
hxg5 23.Bxc6 (0:03.21)
[+0.58]  d=15   17.Qxc5 Nc6 18.Qe3 Na5 19.Qc3 Nc6 20.Bh3 Rab8 21.Ng5 Ne7 22.Nxe4
Qxe4 23.f3 Qb7 24.Qd2 Nf5 25.Bxf5 exf5 (0:05.14)
[+0.58]  d=16   17.Qxc5 Nc6 18.Qe3 Na5 19.Qc3 Nc6 20.Bh3 Rab8 21.Ng5 Bg6 22.Bg2
Qc7 23.c5 h6 24.Ne4 Nb4 (0:07.49)
[+0.58]  d=17   17.Qxc5 Nc6 18.Qe3 Na5 19.Qc3 Nc6 20.Qd2 Rab8 21.Rxd7 Rxd7
22.Qxd7 Qxd7 23.Rxd7 Rb1+ 24.Bf1 f6 25.Nd2 Rd1 (1:28.32)
[+0.92]  d=17   17.Rxe6 fxe6 18.Ng5 Nc6 19.Qxe4 g6 20.Qh4 h5 21.Be4 Kg7 22.Rd6
Rac8 23.Qf4 Rf8 24.Qd2 Rc7 25.Bxc6 Qb1+ 26.Kg2 (2:10.23)
[+0.70]  d=18   17.Rxe6 fxe6 18.Ng5 h6 19.Nxe4 Nc6 20.Nxc5 Qc7 21.Nxd7 e5 22.Qd3
Rac8 23.Qg6 Nd4 24.Nf6+ Kf8 25.Nh7+ Kg8 (2:43.47)
[+0.82]  d=19   17.Rxe6 fxe6 18.Ng5 h6 19.Nxe4 Nc6 20.Nxc5 Qc7 21.Nxd7 e5
22.Bd5+ Kh8 23.Nc5 Qb6 24.Rd2 e4 25.Kg2 Rab8 26.f4 (6:27.27)



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