Author: Pete Galati
Date: 12:12:49 02/27/01
Go up one level in this thread
On February 27, 2001 at 10:14:04, Sune Larsson wrote:
>
> [D]r7/7k/5R2/p3p3/Pp1pPp2/1PpP1Pp1/K1P3P1/8 w - - 0 1
>
>
> White to move and make it for the draw. Normal play like 1.Rf5? Kg6!
> 2.Rxe5 Rh8! followed by Rh2 gives the full point to black. 1.Re6? makes
> no difference after 1.-Rh8! But the pawnchain carries some hidden secrets...
> To be honest, this is more a test of one's own limitations of the mind.
> I think it's too difficult for any chessprogram (but who knows?. Then
> again, it's possible to test the programs when 1/3,1/2 or 2/3 of the
> solution is performed. A human can solve it by trial and error. If
> normal play doesn't work, one is forced to think in new patterns...
>
> Sune
This is the fisrt I've gotten Amy to work (recently) I had forgotten how to work
the thing.
Hey Uli, Amy is doing the same thing Comet does when it searches a position long
enough, it reports negative nodes.
Amy changed from Re6 to Rf5
Pete
Amy version Winboard Version 0.7, Copyright (C) 2000 Thorsten Greiner
Amy comes with ABSOLUTELY NO WARRANTY; for details type 'warranty'
This is free software, and you are welcome to redistribute it
under certain conditions; type 'distribution'
Multiprocessor support (0 CPUs).
$Id: score.c,v 1.44 2000/03/21 15:18:58 thorsten Exp $
$Id: search.c,v 1.57 2000/03/22 10:19:02 thorsten Exp $
Hashtable sizes: 32768 k, 16384 k, 16384 k
Found 5-men endgame table bases.
White(1): White(1): +---+---+---+---+---+---+---+---+
8 |*R*| | | | | | | |
+---+---+---+---+---+---+---+---+
7 | | | | | | | |*K*| Hashkey: c184895a
+---+---+---+---+---+---+---+---+
6 | | | | | | R | | |
+---+---+---+---+---+---+---+---+
5 |*P*| | | |*P*| | | | Black (12000, 5000) P..R.
+---+---+---+---+---+---+---+---+
4 | P |*P*| |*P*| P |*P*| | | White (12000, 5000) P..R.
+---+---+---+---+---+---+---+---+
3 | | P |*P*| P | | P |*P*| |
+---+---+---+---+---+---+---+---+
2 | K | | P | | | | P | | Index: 41
+---+---+---+---+---+---+---+---+
1 | | | | | | | | | MateThreat: 0 0
+---+---+---+---+---+---+---+---+
a b c d e f g h
White(1): TC: 60 moves in 300 secs
TL: 4/16
GamePhase: Middlegame
It Time Score principal Variation
1 0.0 --- 1. Rxf4
1 0.0 -3.936 1. Rxf4
1 0.0 +++ 1. Rf5
1 0.0 -0.128 1. Rf5
1 0.0 +++ 1. Rc6
1 0.0 -0.096 1. Rc6
1 0.6 -0.096 1. Rc6
2 0.6 -0.240 1. Rc6 Rh8
2 0.6 +++ 1. Re6
2 0.6 +0.992 1. Re6 Rh8
2 0.6 +0.992 1. Re6 Rh8
3 0.6 +0.992 1. Re6 Rh8 2. Rxe5
3 0.6 +0.992 1. Re6 Rh8 2. Rxe5
4 0.6 +0.848 1. Re6 Kg7 2. Rxe5 Kf6
4 0.7 +0.848 1. Re6 Kg7 2. Rxe5 Kf6
5 0.7 +0.944 1. Re6 Kg7 2. Rxe5 Kg6 3. Kb1
5 0.7 +0.944 1. Re6 Kg7 2. Rxe5 Kg6 3. Kb1
6 0.7 +1.136 1. Re6 Kh8 2. Re7 Rg8 3. Rxe5 Ra8 4. Rf5 Ra6
6 0.7 +1.136 1. Re6 Kh8 2. Re7 Rg8 3. Rxe5 Ra8 4. Rf5 Ra6
7 0.8 +++ 1. Re6
7 0.9 +1.664 1. Re6 Kg7 2. Rxe5 Kf6 3. Rf5+ Ke6 4. Rd5 Rh8
7 0.9 +1.664 1. Re6 Kg7 2. Rxe5 Kf6 3. Rf5+ Ke6 4. Rd5 Rh8
8 1.2 --- 1. Re6
8 1.3 +0.576 1. Re6 Rh8 2. Rxe5 Kg6 3. Rxa5 Rh2 4. Ra6+ Kg5 5. e5
8 1.8 +0.576 1. Re6 Rh8 2. Rxe5 Kg6 3. Rxa5 Rh2 4. Ra6+ Kg5 5. e5
9 1.9 +0.688 1. Re6 Rh8 2. Rxe5 Kg6 3. Rxa5 Rh2 4. Ra8 Rxg2 5. Rg8+
Kf6
9 2.1 +0.688 1. Re6 Rh8 2. Rxe5 Kg6 3. Rxa5 Rh2 4. Ra8 Rxg2 5. Rg8+
Kf6
10 2.5 +0.672 1. Re6 Rh8 2. Rxe5 Kg6 3. Rxa5 Rh2 4. Ra6+ Kg7 5. e5 Rxg2
6. Ra7+ Kg6
10 2.8 +0.672 1. Re6 Rh8 2. Rxe5 Kg6 3. Rxa5 Rh2 4. Ra6+ Kg7 5. e5 Rxg2
6. Ra7+ Kg6
11 3.7 +0.560 1. Re6 Rh8 2. Rxe5 Kg6 3. Rxa5 Rh2 4. Ra6+ Kg5 5. Rd6
Rxg2 6. Kb1 Rg1+ 7. Ka2
11 4.0 +0.560 1. Re6 Rh8 2. Rxe5 Kg6 3. Rxa5 Rh2 4. Ra6+ Kg5 5. Rd6
Rxg2 6. Kb1 Rg1+ 7. Ka2
12 4.5 +0.432 1. Re6 Rh8 2. Rxe5 Kg6 3. Rxa5 Rh2 4. Ra6+ Kg7 5. Ra7+
Kf6 6. Rb7 Rxg2 7. Kb1 Rg1+ 8. Ka2
12 4.7 +0.432 1. Re6 Rh8 2. Rxe5 Kg6 3. Rxa5 Rh2 4. Ra6+ Kg7 5. Ra7+
Kf6 6. Rb7 Rxg2 7. Kb1 Rg1+ 8. Ka2
13 5.5 --- 1. Re6
13 5.9 +0.000 1. Re6 Rh8 2. Rxe5 Kg6 3. Rxa5 Rh2 4. Ra6+ Kg7 5. Ra7+
Kf6 6. e5+ Ke6 7. Ra6+ Kxe5 8. Ra5+ Kf6 9. Ra6+ Ke5 10.
Ra5+ Kf6 11. Ra6+ Ke5 12. Ra5+ Kf6 13. Ra6+ Ke5
13 6.2 +0.000 1. Re6 Rh8 2. Rxe5 Kg6 3. Rxa5 Rh2 4. Ra6+ Kg7 5. Ra7+
Kf6 6. e5+ Ke6 7. Ra6+ Kxe5 8. Ra5+ Kf6 9. Ra6+ Ke5 10.
Ra5+ Kf6 11. Ra6+ Ke5 12. Ra5+ Kf6 13. Ra6+ Ke5
14 7.0 +0.000 1. Re6 Rh8 2. Rxe5 Kg6 3. Rxa5 Rh2 4. Ra6+ Kg7 5. Ra7+
Kf6 6. Ra6+ Kg7 7. Ra7+ Kf6 8. Ra6+ Kg7 9. Ra7+ Kf6 10.
Ra6+ Kg7
14 7.3 +0.000 1. Re6 Rh8 2. Rxe5 Kg6 3. Rxa5 Rh2 4. Ra6+ Kg7 5. Ra7+
Kf6 6. Ra6+ Kg7 7. Ra7+ Kf6 8. Ra6+ Kg7 9. Ra7+ Kf6 10.
Ra6+ Kg7
15 10.1 +0.000 1. Re6 Rh8 2. Rxe5 Kg6 3. Rxa5 Rh2 4. Ra6+ Kg7 5. Ra7+
Kf6 6. Ra6+ Kg7 7. Ra7+ Kf6 8. Ra6+ Kg7 9. Ra7+ Kf6 10.
Ra6+ Kg7
15 10.4 +0.000 1. Re6 Rh8 2. Rxe5 Kg6 3. Rxa5 Rh2 4. Ra6+ Kg7 5. Ra7+
Kf6 6. Ra6+ Kg7 7. Ra7+ Kf6 8. Ra6+ Kg7 9. Ra7+ Kf6 10.
Ra6+ Kg7
16 16.6 --- 1. Re6
16 23.5 -0.416 1. Re6 Rh8 2. Rxe5 Kg6 3. Rf5 Rh2 4. Rxf4 Rxg2 5. Rg4+
Kf6 6. Kb1 Rg1+ 7. Ka2 Rc1 8. Rxg3 Rxc2+ 9. Ka1 Rb2 10.
Rg1 Rxb3 11. f4
16 26.4 -0.416 1. Re6 Rh8 2. Rxe5 Kg6 3. Rf5 Rh2 4. Rxf4 Rxg2 5. Rg4+
Kf6 6. Kb1 Rg1+ 7. Ka2 Rc1 8. Rxg3 Rxc2+ 9. Ka1 Rb2 10.
Rg1 Rxb3 11. f4
17 35.3 -0.416 1. Re6 Rh8 2. Rxe5 Kg6 3. Rf5 Rh2 4. Rxf4 Rxg2 5. Rg4+
Kf6 6. Kb1 Rg1+ 7. Ka2 Rc1 8. Rxg3 Rxc2+ 9. Ka1 Rb2 10.
Rg1 Rxb3 11. f4
17 36.9 -0.416 1. Re6 Rh8 2. Rxe5 Kg6 3. Rf5 Rh2 4. Rxf4 Rxg2 5. Rg4+
Kf6 6. Kb1 Rg1+ 7. Ka2 Rc1 8. Rxg3 Rxc2+ 9. Ka1 Rb2 10.
Rg1 Rxb3 11. f4
18 1:00 -0.656 1. Re6 Rh8 2. Rxe5 Kg6 3. Rf5 Rh2 4. Rxf4 Rxg2 5. Rg4+
Kf6 6. Kb1 Rg1+ 7. Ka2 Rc1 8. Rxg3 Rxc2+ 9. Kb1 Rb2+ 10.
Kc1
18 1:07 -0.656 1. Re6 Rh8 2. Rxe5 Kg6 3. Rf5 Rh2 4. Rxf4 Rxg2 5. Rg4+
Kf6 6. Kb1 Rg1+ 7. Ka2 Rc1 8. Rxg3 Rxc2+ 9. Kb1 Rb2+ 10.
Kc1
19 1:37 -0.800 1. Re6 Rh8 2. Rxe5 Kg6 3. Rf5 Rh2 4. Rxf4 Rxg2 5. Rg4+
Kf6 6. Kb1 Rg1+ 7. Ka2 Rc1 8. Rxg3 Rxc2+ 9. Kb1 Rb2+ 10.
Kc1 Rxb3 11. f4 Rb2 12. Rg1
19 1:45 -0.800 1. Re6 Rh8 2. Rxe5 Kg6 3. Rf5 Rh2 4. Rxf4 Rxg2 5. Rg4+
Kf6 6. Kb1 Rg1+ 7. Ka2 Rc1 8. Rxg3 Rxc2+ 9. Kb1 Rb2+ 10.
Kc1 Rxb3 11. f4 Rb2 12. Rg1
20 2:33 --- 1. Re6
20 2:58 -1.050 1. Re6 Rh8 2. Rxe5 Kg8 3. Rxa5 Rh2 4. Kb1 Rxg2 5. Rg5+
Kh7 6. a5 Rg1+ 7. Ka2 Rc1 8. a6 Rxc2+ 9. Ka1 g2 10. a7
Rc1+ 11. Ka2 c2 12. a8=Q Rd1
20 3:51 +++ 1. Rf5
20 5:35 -1.050 1. Rf5 Kg6 2. Rxe5 Rh8 3. Rxa5 Rh2 4. Ka1 Rxg2 5. Ra6+
Kh5 6. Ra5+ Kh4 7. Ra7 Rg1+ 8. Ka2 Rc1 9. Rh7+ Kg5 10.
Rg7+ Kf6 11. Rd7 Rxc2+ 12. Kb1 g2 13. Rd6+ Kg7 14. Rb6
g1=Q+ 15. Kxc2 Qg2+ 16. Kb1 Qxf3 17. Rb7+ Kf6 18. Rb6+
Kf7 19. Rc6
20 5:36 -1.050 1. Rf5 Kg6 2. Rxe5 Rh8 3. Rxa5 Rh2 4. Ka1 Rxg2 5. Ra6+
Kh5 6. Ra5+ Kh4 7. Ra7 Rg1+ 8. Ka2 Rc1 9. Rh7+ Kg5 10.
Rg7+ Kf6 11. Rd7 Rxc2+ 12. Kb1 g2 13. Rd6+ Kg7 14. Rb6
g1=Q+ 15. Kxc2 Qg2+ 16. Kb1 Qxf3 17. Rb7+ Kf6 18. Rb6+
Kf7 19. Rc6
21 8:01 -1.040 1. Rf5 Kg6 2. Rxe5 Rh8 3. Rf5 Rh2 4. Rxf4 Rxg2 5. Rg4+
Kf6 6. Kb1 Rg1+ 7. Ka2 Rc1 8. Rxg3 Rxc2+ 9. Kb1 Rb2+ 10.
Kc1 Rxb3 11. Rh3 Ra3 12. Rh6+ Kf7
21 8:09 -1.040 1. Rf5 Kg6 2. Rxe5 Rh8 3. Rf5 Rh2 4. Rxf4 Rxg2 5. Rg4+
Kf6 6. Kb1 Rg1+ 7. Ka2 Rc1 8. Rxg3 Rxc2+ 9. Kb1 Rb2+ 10.
Kc1 Rxb3 11. Rh3 Ra3 12. Rh6+ Kf7
22 10:23 --- 1. Rf5
22 13:11 -1.408 1. Rf5 Kg6 2. Rxe5 Rh8 3. Rf5 Rh2 4. Rxf4 Rxg2 5. Kb1
Rg1+ 6. Ka2 Rc1 7. Rg4+ Kf6 8. Rxg3 Rxc2+ 9. Kb1 Rb2+ 10.
Kc1 Rxb3 11. Rh3 Ra3 12. Rh6+ Ke5
22 13:42 -1.408 1. Rf5 Kg6 2. Rxe5 Rh8 3. Rf5 Rh2 4. Rxf4 Rxg2 5. Kb1
Rg1+ 6. Ka2 Rc1 7. Rg4+ Kf6 8. Rxg3 Rxc2+ 9. Kb1 Rb2+ 10.
Kc1 Rxb3 11. Rh3 Ra3 12. Rh6+ Ke5
23 20:46 -1.488 1. Rf5 Kg6 2. Rxe5 Rh8 3. Rf5 Rh2 4. Rxf4 Rxg2 5. Kb1
Rg1+ 6. Ka2 Rc1 7. Rg4+ Kf6 8. Rxg3 Rxc2+ 9. Kb1 Rb2+ 10.
Kc1 Rxb3 11. f4 Ra3 12. Rg5
23 23:12 -1.488 1. Rf5 Kg6 2. Rxe5 Rh8 3. Rf5 Rh2 4. Rxf4 Rxg2 5. Kb1
Rg1+ 6. Ka2 Rc1 7. Rg4+ Kf6 8. Rxg3 Rxc2+ 9. Kb1 Rb2+ 10.
Kc1 Rxb3 11. f4 Ra3 12. Rg5
24 40:49 --- 1. Rf5
24 63:35 -1.872 1. Rf5 Kg6 2. Rxe5 Rh8 3. Rf5 Rh2 4. Rxf4 Rxg2 5. Kb1
Rg1+ 6. Ka2 Rc1 7. Rg4+ Kf6 8. Rxg3 Rxc2+ 9. Kb1 Rb2+ 10.
Kc1 Rxb3 11. Rg8 Ra3 12. Rf8+ Ke7 13. Rc8
24 67:07 -1.872 1. Rf5 Kg6 2. Rxe5 Rh8 3. Rf5 Rh2 4. Rxf4 Rxg2 5. Kb1
Rg1+ 6. Ka2 Rc1 7. Rg4+ Kf6 8. Rxg3 Rxc2+ 9. Kb1 Rb2+ 10.
Kc1 Rxb3 11. Rg8 Ra3 12. Rf8+ Ke7 13. Rc8
25 117:19 --- 1. Rf5
25 221:17 -2.128 1. Rf5 Kg6 2. Rxe5 Rh8 3. Rf5 Rh2 4. Rxf4 Rxg2 5. Kb1
Rg1+ 6. Ka2 Rc1 7. Rg4+ Kf6 8. Rxg3 Rxc2+ 9. Kb1 Rb2+ 10.
Kc1 Rxb3 11. Rg8 Ra3 12. Rf8+ Ke7 13. Ra8 b3
Nodes = -1616474421, QPerc: -106 %, time = 13805.4 secs, -117.1 kN/s
Extensions: Check: 296307228 DblChk: 2025507 DiscChk: 4313422 SingReply:
60215443
Recapture: 2804231 Passed Pawn: 167756423 Zugzwang: 3407
Hashing: Trans: 78094011/949190935 = 0 % Pawn: 747677856/748287062 = 2 %
Eval: 975407929/1723694991 = 0 %
EGTB Hits/Probes = 4000/15661
Hashtable 1: entries = 2097152, use = 2085708
White(1):
I'll be back.
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Last modified: Thu, 15 Apr 21 08:11:13 -0700
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