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Subject: Re: Endgame Testposition (easy for some, hard for others)

Author: Jaime Benito de Valle Ruiz

Date: 15:32:21 06/21/04

Go up one level in this thread

>What Crafty version are you running?  all the recent versions see that this is
>winning for black instantly, starting at ply=1:
>
>              depth   time  score   variation (1)
>                1     0.00  -5.73   1. ... Qxd5 2. cxd5
>                1->   0.00  -5.73   1. ... Qxd5 2. cxd5
>                2     0.00  -5.83   1. ... Qxd5 2. cxd5 Kg8
>                2->   0.00  -5.83   1. ... Qxd5 2. cxd5 Kg8
>                3     0.00     -1   1. ... Qxd5
>                3     0.00  -5.38   1. ... Qxd5 2. cxd5 Kg8 3. d6
>                3->   0.01  -5.38   1. ... Qxd5 2. cxd5 Kg8 3. d6
>                4     0.01  -5.68   1. ... Qxd5 2. cxd5 Kg8 3. d6 Kf7
>                4->   0.01  -5.68   1. ... Qxd5 2. cxd5 Kg8 3. d6 Kf7
>

(around 1 Gnode/sec)

b: Crafty-19.3  WB2 5 MB:
 7   00:00 -0.70   1. ... Qe2+ 2. Kg5 Qe7+ 3. Kg4 Kh7 4. Qh5+ Kg8 5. Qg6 Qe2+ 6.
Kg3 a4 7. Qxb6 Qxc4
 8   00:00 -0.64   1. ... Qe2+ 2. Kg3 Qe8 3. Kf3 a4 4. Qd6 Qh5+ 5. Ke4 Qe2+ 6.
Kf5 Qe3
 8   00:00 -0.70   1. ... Qg6+ 2. Kf3 Kh7 3. c5 bxc5 4. Qxc5 Qd3+ 5. Kf2 Qd2+ 6.
Kg3 a4
 9   00:00 -0.66   1. ... Qg6+ 2. Kf3 Kh7 3. c5 bxc5 4. Qxc5 a4 5. Qa3 Qc6+ 6.
Ke3 Kg6
 9   00:00 -0.68   1. ... Qe2+ 2. Kg3 Qe8 3. Kf2 a4 4. c5 bxc5 5. Qxc5 Kh7 6.
Qg5
10   00:02 -0.73   1. ... Qe2+ 2. Kg3 Qe7 3. h5 Kh7 4. Qf5+ Kg8 5. Kf3 Qf7 6.
Qe5 Kh7 7. Qe4+ Kh6
11   00:07 -0.77   1. ... Qe2+ 2. Kg3 Qe8 3. Kf2 a4 4. c5 bxc5 5. Qxc5 Kh7 6. h5
Qe4 7. Qg5
11   00:10 -0.80   1. ... Qe8 2. Qd6 Qc8+ 3. Kf3 Qxc4 4. Qxb6 a4 5. Qb8+ Kh7 6.
Qb1+ g6 7. Qb7+ Kh6 8. Qe7 Qd4
12   00:17 -0.84   1. ... Qe8 2. Kg5 a4 3. c5 Qe7+ 4. Kg4 Qe2+ 5. Kg5 bxc5 6.
Qxc5 Qg2+ 7. Kf5 Qg3 8. Ke5 Qxh4
13   00:35 -0.88   1. ... Qe8 2. Kg3 a4 3. c5 Qe3+ 4. Kg4 Qg1+ 5. Kh3 Qf1+ 6.
Kg4 Qe2+ 7. Kg5 bxc5 8. Qa8+ Kh7 <HT>
13   00:38 -1.24   1. ... Qxd5!!
13   00:38 -2.37   1. ... Qxd5 2. cxd5 Kg8 3. h5 a4 4. f5 a3 5. d6 Kf7 6. d7 Ke7
7. f6+ gxf6 8. d8=Q+ Kxd8 9. h6
14   00:38 -2.77   1. ... Qxd5!!
14   00:39 -3.10   1. ... Qxd5 2. cxd5 Kg8 3. Kf5 Kf7 4. Ke5 a4 5. Kd4 a3 6. Kc3
Ke7 7. h5 a2 8. Kb2 Kd6 9. Kxa2 Kxd5
15   00:41 -3.08   1. ... Qxd5 2. cxd5 Kg8 3. Kf5 Kf7 4. Ke4 a4 5. Kd3 a3 6. Kc2
Ke7 7. f5 a2 8. Kb2 Kd6 9. f6
16   00:41 -3.48   1. ... Qxd5!!
16   00:43 -5.79   1. ... Qxd5 2. cxd5 Kg8 3. Kf5 a4 4. Ke6 Kf8 5. d6 Ke8 6. Kd5
a3 7. Kc6 Kd8 8. Kxb6 Kd7 9. Kc5
17   00:43 -6.19   1. ... Qxd5!!
17   00:44 -6.76   1. ... Qxd5 2. cxd5 Kg8 3. Kf5 a4 4. Ke6 Kf8 5. d6 Ke8 6. Kd5
a3 7. Kc6 Kd8 8. f5 a2 9. h5 a1=Q 10. Kxb6

Do I have a bad version????
Regards,

  Jaime

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