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Subject: Re: Test: quiet move and Zugzwang

Author: Joshua Haglund

Date: 17:01:26 07/28/04

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On July 28, 2004 at 19:35:47, John Merlino wrote:

>On July 28, 2004 at 19:22:32, Joshua Haglund wrote:
>
>>(Custom Crafty)
>>White(1): analyze
>>end-game phase
>>              clearing hash tables
>>              time limit 8.85 (53.10)
>>         nss  depth   time  score   variation (1)
>>                8     0.11   4.60   1. Rb5+ Nb6 2. Rxb6+ Kc8 3. Kg3 Rxd8
>>                                    4. Rxh6 Kc7 5. Kf4 Kd7
>>                8->   0.16   4.60   1. Rb5+ Nb6 2. Rxb6+ Kc8 3. Kg3 Rxd8
>>                                    4. Rxh6 Kc7 5. Kf4 Kd7
>>                9     0.24   4.60   1. Rb5+ Nb6 2. Rxb6+ Kc8 3. Kg3 Rxd8
>>                                    4. Rxh6 Rd4 5. Rh7 Kd8 6. Rh6
>>                9->   0.30   4.60   1. Rb5+ Nb6 2. Rxb6+ Kc8 3. Kg3 Rxd8
>>                                    4. Rxh6 Rd4 5. Rh7 Kd8 6. Rh6
>>               10     0.44   4.60   1. Rb5+ Nb6 2. Rxb6+ Kc8 3. Kg3 Rxd8
>>                                    4. Rxh6 Rd4 5. Rh7 Kd8 6. Bf3 Rb4
>>               10->   0.60   4.60   1. Rb5+ Nb6 2. Rxb6+ Kc8 3. Kg3 Rxd8
>>                                    4. Rxh6 Rd4 5. Rh7 Kd8 6. Bf3 Rb4
>>               11     0.89   4.60   1. Rb5+ Nb6 2. Rxb6+ Kc8 3. Kg3 Rxd8
>>                                    4. Rxh6 Rd4 5. Rh7 Kd8 6. Bf3 Rb4 7.
>>                                    Bc6
>>               11->   1.28   4.60   1. Rb5+ Nb6 2. Rxb6+ Kc8 3. Kg3 Rxd8
>>                                    4. Rxh6 Rd4 5. Rh7 Kd8 6. Bf3 Rb4 7.
>>                                    Bc6
>>               12     2.03   4.60   1. Rb5+ Nb6 2. Rxb6+ Kc8 3. Kg3 Rxd8
>>                                    4. Rxh6 Rd4 5. Rh7 Kd8 6. Bf3 Rb4 7.
>>                                    Bc6 Rb1
>>               12->   3.69   4.60   1. Rb5+ Nb6 2. Rxb6+ Kc8 3. Kg3 Rxd8
>>                                    4. Rxh6 Rd4 5. Rh7 Kd8 6. Bf3 Rb4 7.
>>                                    Bc6 Rb1
>>               13     5.67   4.60   1. Rb5+ Nb6 2. Rxb6+ Kc8 3. Kg3 Rxd8
>>                                    4. Rxh6 Rd4 5. Rh7 Kd8 6. Bf3 Rb4 7.
>>                                    Bc6 Rc4 8. Bb7
>>               13->   8.22   4.60   1. Rb5+ Nb6 2. Rxb6+ Kc8 3. Kg3 Rxd8
>>                                    4. Rxh6 Rd4 5. Rh7 Kd8 6. Bf3 Rb4 7.
>>                                    Bc6 Rc4 8. Bb7
>>               14    15.35   4.60   1. Rb5+ Nb6 2. Rxb6+ Kc8 3. Kg3 Rxd8
>>                                    4. Rxh6 Rd4 5. Rh7 Kd8 6. Bf3 Rb4 7.
>>                                    Bc6 Rc4 8. Bb7 Ke8
>>               14->  22.88   4.60   1. Rb5+ Nb6 2. Rxb6+ Kc8 3. Kg3 Rxd8
>>                                    4. Rxh6 Rd4 5. Rh7 Kd8 6. Bf3 Rb4 7.
>>                                    Bc6 Rc4 8. Bb7 Ke8
>>               15    45.71   4.60   1. Rb5+ Nb6 2. Rxb6+ Kc8 3. Kg3 Rxd8
>>                                    4. Rxh6 Rd4 5. Rh7 Kd8 6. Bf3 Rd7 7.
>>                                    Rh8+ Kc7 8. Kf4 Rf7+ 9. Ke4 Kd7 10.
>>                                    Bg4+ Ke7
>>               15->   1:22   4.60   1. Rb5+ Nb6 2. Rxb6+ Kc8 3. Kg3 Rxd8
>>                                    4. Rxh6 Rd4 5. Rh7 Kd8 6. Bf3 Rd7 7.
>>                                    Rh8+ Kc7 8. Kf4 Rf7+ 9. Ke4 Kd7 10.
>>                                    Bg4+ Ke7
>>Interesting,
>>
>>Joshua Haglund
>>toneewa@yahoo.com
>
>That exact same score with every PV looks very weird. Are you sure everything is
>kosher with your Crafty setup?
>
>jm
(Custom Crafty)
               15    45.43   4.60   1. Rb5+ Nb6 2. Rxb6+ Kc8 3. Kg3 Rxd8
                                    4. Rxh6 Rd4 5. Rh7 Kd8 6. Bf3 Rd7 7.
                                    Rh8+ Kc7 8. Kf4 Rf7+ 9. Ke4 Kd7 10.
                                    Bg4+ Ke7
               15->   1:22   4.60   1. Rb5+ Nb6 2. Rxb6+ Kc8 3. Kg3 Rxd8
                                    4. Rxh6 Rd4 5. Rh7 Kd8 6. Bf3 Rd7 7.
                                    Rh8+ Kc7 8. Kf4 Rf7+ 9. Ke4 Kd7 10.
                                    Bg4+ Ke7
               16     2:24   4.65   1. Rb5+ Nb6 2. Rxb6+ Kc8 3. Kg4 Rh2
                                    4. Bh4 Rxh1 5. Rxh6 Rb1 6. Kf5 Rb5+
                                    7. Kf4 Kc7 8. Ke4 Kd7 9. Rh7+ Kd6 10.
                                    Bd8 Rb4+ 11. Kf5
               16->   3:12   4.65   1. Rb5+ Nb6 2. Rxb6+ Kc8 3. Kg4 Rh2
                                    4. Bh4 Rxh1 5. Rxh6 Rb1 6. Kf5 Rb5+
                                    7. Kf4 Kc7 8. Ke4 Kd7 9. Rh7+ Kd6 10.
                                    Bd8 Rb4+ 11. Kf5
               17     5:52   4.65   1. Rb5+ Nb6 2. Rxb6+ Kc8 3. Kg4 Rh2
                                    4. Bh4 Rxh1 5. Rxh6 Rb1 6. Kf5 Rb5+
                                    7. Kf4 Kc7 8. Ke4 Kd7 9. Rh7+ Kd6 10.
                                    Bg3+ Ke6 11. Bf2 Rb4+ 12. Bd4
               17->   8:34   4.65   1. Rb5+ Nb6 2. Rxb6+ Kc8 3. Kg4 Rh2
                                    4. Bh4 Rxh1 5. Rxh6 Rb1 6. Kf5 Rb5+
                                    7. Kf4 Kc7 8. Ke4 Kd7 9. Rh7+ Kd6 10.
                                    Bg3+ Ke6 11. Bf2 Rb4+ 12. Bd4
Continues to climb a hair. After Rb4+ Nb6 RxN Kc8 It's an apparent draw. Kg3 or
Kg4 doesn't do much. Doesn't see draw because it's not forced.

Yep. I thought it was weird too but, the first 4 moves must be the best line to
play. Custom = not version 19.15.

Joshua Haglund
toneewa@yahoo.com




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