Author: Stuart Cracraft
Date: 15:38:40 03/05/99
Go up one level in this thread
On March 04, 1999 at 11:48:36, Robert Hyatt wrote:
>On March 04, 1999 at 11:00:46, Randy Lovelace wrote:
>
>>In this position La Dame Blanche played h4!! in only 5 sec
>>Rebel 10c cant find this move after 10min on my machine
>>This was a game played by my program RLchess once again a passed
>>pawn kills me
>>4bR2/4P3/1np3pk/1p2B3/p3R3/8/2q3PP/7K w - - bm h4!!;id Ldb-RLchess;
>>Randy Lovelace
>
>
>You must have set the position up wrong. I ran this on crafty and got
>the following:
>
> 6 0.27 0.46 1. Ref4 Qc1+ 2. Rf1 Qxf1+ 3. Rxf1 Nc4
> 4. Bh8 Nd6 5. Be5 Ne4
> 6 0.66 ++ 1. h4!!
> 6-> 0.70 0.85 1. h4
> 7 0.98 ++ 1. h4!!
> 7 2.11 3.45 1. h4 Qb1+ 2. Kh2 g5 3. Rxe8 Qxe4 4.
> Rh8+ Kg6 5. e8=Q+ Kf5 6. Qf7+ Kxe5
> 7. Re8+ Kd4 8. Rxe4+ Kxe4 9. hxg5
> 7-> 2.43 3.45 1. h4 Qb1+ 2. Kh2 g5 3. Rxe8 Qxe4 4.
> Rh8+ Kg6 5. e8=Q+ Kf5 6. Qf7+ Kxe5
> 7. Re8+ Kd4 8. Rxe4+ Kxe4 9. hxg5
> 8 3.25 ++ 1. h4!!
> 8 6.18 7.19 1. h4 g5 2. Rxe8 Kg6 3. Rf8 Qd1+ 4.
> Kh2 Qd7 5. e8=Q+ Qxe8 6. Rxe8 <HT>
> 8-> 6.87 7.19 1. h4 g5 2. Rxe8 Kg6 3. Rf8 Qd1+ 4.
> Kh2 Qd7 5. e8=Q+ Qxe8 6. Rxe8 <HT>
> 9 8.78 7.19 1. h4 g5 2. Rxe8 Kg6 3. Rf8 Qd1+ 4.
> Kh2 Qd7 5. e8=Q+ Qxe8 6. Rxe8 <HT>
> 9-> 10.34 7.19 1. h4 g5 2. Rxe8 Kg6 3. Rf8 Qd1+ 4.
> Kh2 Qd7 5. e8=Q+ Qxe8 6. Rxe8 <HT>
> 10 16.98 7.14 1. h4 g5 2. Rxe8 Qd1+ 3. Kh2 Qd7 4.
> Rh8+ Kg6 5. Bg3 gxh4 6. Bxh4 Nc4 7.
> Rg8+ Kf5 8. e8=Q Qxe8 9. Rgxe8
>
>I can't imagine a program like Rebel not finding that.
This is some kind of monster problem for some programs that don't
have some feature.
GNU Chess 5.0 took quite a while to find h4 and not until 8 ply at that.
So the question is, Bob, what do you think in Crafty is enabling it
to see the solution sooner than Rebel or GNU Chess 5.0 BETA?
white
. . . . b R . .
. . . . P . . .
. n p . . . p k
. p . . B . . .
p . . . R . . .
. . . . . . . .
. . q . . . P P
. . . . . . . K
White (1) : post
White (1) : go
Read opening book (book.dat)... Opening database: 89122 book positions.
In this position, 0 moves are book moves.
Root = -193, Phase = 5 Depth = 12
1. -137 20 265 Rh4+ Kg5 Rd4
2& -160 22 1582 Rh4+ Kg5 Bf6+ Kf5 Bc3+ Kg5
2. -160 26 2602 Rh4+ Kg5 Bf6+ Kf5 Bc3+ Kg5
3+ -48 40 9855 Rh4+
3& -48 40 9859 Rh4+ Kg5 Bf6+ Kf5 Bd4+ Ke6 Bxb6 Kxe7
3. -48 55 19367 Rh4+ Kg5 Bf6+ Kf5 Bd4+ Ke6 Bxb6 Kxe7
4& -79 89 35491 Rh4+ Kg5 Bf6+ Kf5 Bd4+ Ke6 Rxe8 Qc1+ Bg1
Nd5
4+ 32 137 60029 Ref4
4& 72 164 80836 Ref4 g5 Rh8+ Kg6 Rf6+ Kg7 Rxe8
4. 72 166 81918 Ref4 g5 Rh8+ Kg6 Rf6+ Kg7 Rxe8
5+ 154 196 97894 Ref4
5& 176 204 102177 Ref4 Qc1+ Rf1 Qxf1+ Rxf1 Nc4 Bg3 c5 Rf8 Bc6
e8=B Bxe8 Rxe8
5. 176 278 139643 Ref4 Qc1+ Rf1 Qxf1+ Rxf1 Nc4 Bg3 c5 Rf8 Bc6
e8=B Bxe8 Rxe8
6& 176 308 155830 Ref4 Qc1+ Rf1 Qxf1+ Rxf1 Nc4 Bg3 c5 Rf8 Bc6
e8=B Bxe8 Rxe8
6& 191 604 313275 Rh4+ Kg5 Rhf4 Qd1+ Rf1 Qe2 Bf6+ Kg4 h3+ Kg3
Rf3+ Qxf3 Be5+ Qf4 Bxf4+
6. 191 715 371801 Rh4+ Kg5 Rhf4 Qd1+ Rf1 Qe2 Bf6+ Kg4 h3+ Kg3
Rf3+ Qxf3 Be5+ Qf4 Bxf4+
7& 176 2370 1217392 Rh4+ Kg5 h3 Qe2 Rg4+ Qxg4 Bf6+ Kf5
7+ 285 3668 1885306 Ref4
7& 306 3996 2063453 Ref4 Qc1+ Rf1 Qxf1+ Rxf1 Nd5 Rf8 Bd7 Rd8
7. 306 4483 2319701 Ref4 Qc1+
8& 320 5039 2618370 Ref4 Qc1+ Rf1 Qxf1+ Rxf1 Nd5 Rf8 Bd7 Rd8
Nxe7 Bf6 Kh5
8+ 411 12376 6380481 h4
8& 535 81782 47748043 h4 g5 Rxe8 Kg6 Rg8+ Kf5 Rb4
8. 535 109645 60919885 h4 g5
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.