Author: Robert Hyatt
Date: 10:28:34 10/12/99
Go up one level in this thread
On October 12, 1999 at 08:47:57, Bernhard Bauer wrote:
>Hallo,
>
> +---+---+---+---+---+---+---+---+
> 8 | | | | | | | *K| |
> +---+---+---+---+---+---+---+---+
> 7 | | R | | | | | | |
> +---+---+---+---+---+---+---+---+
> 6 | | | | | | | P | *P|
> +---+---+---+---+---+---+---+---+
> 5 | | | | *R| *B| *P| | P |
> +---+---+---+---+---+---+---+---+
> 4 | | P | | | | B | | |
> +---+---+---+---+---+---+---+---+
> 3 | | | | | | | K | |
> +---+---+---+---+---+---+---+---+
> 2 | | | | | | | | |
> +---+---+---+---+---+---+---+---+
> 1 | | | | | | | | |
> +---+---+---+---+---+---+---+---+
> a b c d e f g h
>FEN: 6k/1R/6Pp/3rbp1P/1P3B/6K/8/8 w
>
>this is a position from Nisipeanu vs. Khalifman, Las Vegas, tie-break, game 2.
>
>Question: which program can solve this position?
>IMHO no program can do, but who knows, so I ask.
>G. Kasparov calls it a mutual Zugzvang position and in the variant he gives the
>white rook is hold in prison.
>The best move G. K. gives is Kf3 !!
>Of course all the null-move programmers will call it a study and studies never
>occur in real games ...
>But here it happend.
>Kind regards
>Bernhard
current crafty can't do this in reasonable time. it takes 17 minutes to find
the move Kf3 at depth=17:
13-> 12.82 5.07 1. Bxe5 Rxe5 2. Kf4 Rd5 3. Rh7 Rd4+
4. Kxf5 Rxb4 5. Rxh6 Rb7 6. Ke6 Rc7
7. Ke5 Rd7 <HT>
14 32.66 -- 1. Bxe5
14 33.02 4.86 1. Bxe5 Rxe5 2. Kf4 Rd5 3. Rh7 Rd4+
4. Kxf5 Rxb4 5. Rxh6 Rb7 6. Ke6 Ra7
7. Ke5 Ra5+ 8. Kd6 Kg7 9. Rh7+ <HT>
(4) 14-> 52.80 4.86 1. Bxe5 Rxe5 2. Kf4 Rd5 3. Rh7 Rd4+
4. Kxf5 Rxb4 5. Rxh6 Rb7 6. Ke6 Ra7
7. Ke5 Ra5+ 8. Kd6 Kg7 9. Rh7+ <HT>
(3) 15 1:24 4.86 1. Bxe5 Rxe5 2. Kf4 Rd5 3. Rh7 Rd4+
4. Kxf5 Rxb4 5. Rxh6 Rb7 6. Ke6 Ra7
7. Ke5 Ra5+ 8. Kd6 Ra6+ 9. Kd5 Ra5+
10. Kd6 <HT>
(2) 15-> 1:50 4.86 1. Bxe5 Rxe5 2. Kf4 Rd5 3. Rh7 Rd4+
4. Kxf5 Rxb4 5. Rxh6 Rb7 6. Ke6 Ra7
7. Ke5 Ra5+ 8. Kd6 Ra6+ 9. Kd5 Ra5+
10. Kd6 Ra7 <HT>
16 4:01 4.81 1. Bxe5 Rxe5 2. Kf4 Rd5 3. b5 Rc5 4.
b6 Rb5 5. Rb8+ Kg7 6. b7 Rb6 7. Kxf5
Rb5+ 8. Ke6 Re5+ 9. Kd6 Rxh5 10. Rg8+
Kxg8 11. b8=Q+ Kg7 12. Qe8 Rf5
16-> 5:36 4.81 1. Bxe5 Rxe5 2. Kf4 Rd5 3. b5 Rc5 4.
b6 Rb5 5. Rb8+ Kg7 6. b7 Rb6 7. Kxf5
Rb5+ 8. Ke6 Re5+ 9. Kd6 Rxh5 10. Rg8+
Kxg8 11. b8=Q+ Kg7 12. Qe8 Rf5
17 11:13 4.91 1. Bxe5 Rxe5 2. Kf4 Rd5 3. b5 Rc5 4.
b6 Rb5 5. Rb8+ Kg7 6. b7 Rb6 7. Kxf5
Rb5+ 8. Ke6 Re5+ 9. Kd6 Rxh5 10. Rg8+
Kxg8 11. b8=Q+ Kg7 12. Qe8 Rf5 13.
Qe6
17 17:08 5.01 1. Kf3 Bxf4 2. Kxf4 Rd1 3. b5 Rd5 4.
b6 Rb5 5. Rb8+ Kg7 6. b7 Rb6 7. Kxf5
Rb5+ 8. Ke6 Re5+ 9. Kd6 Rxh5 10. Kc6
Rh4 11. Rg8+ Kxg8 12. b8=Q+ Kg7 13.
Qd6
(3) 17-> 17:08 5.01 1. Kf3 Bxf4 2. Kxf4 Rd1 3. b5 Rd5 4.
b6 Rb5 5. Rb8+ Kg7 6. b7 Rb6 7. Kxf5
Rb5+ 8. Ke6 Re5+ 9. Kd6 Rxh5 10. Kc6
Rh4 11. Rg8+ Kxg8 12. b8=Q+ Kg7 13.
Qd6
18 19:25 ++ 1. Kf3!!
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.