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Subject: Re: Difficult for Crafty?

Author: Jarkko Pesonen

Date: 15:08:13 05/04/04

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it seems that crafty overvalues split passers when there
is knight present and king in good defensive position.

If this split passer-code is activeted only when there are no major or minor
pieces left g6 is found almost instantly
AMD XP 1800+

10     4.68   0.18   1. Ra5 d6 2. Rb5 Qg2 3. Nf3+ Kc4 4.
                     Ra5 Kb4 5. Ra7 Kc4 6. Ke3 Kxd5 7. Rxh7
10     9.48     ++   1. g6!!
10    10.58   0.74   1. g6 hxg6 2. Ra1 Qg2 3. Rg1 d6 4.
                     Rxg2 hxg2 5. Nf3+ Kxd5 6. Ng1 Kd4
10->  10.67   0.74   1. g6 hxg6 2. Ra1 Qg2 3. Rg1 d6 4.
                     Rxg2 hxg2 5. Nf3+ Kxd5 6. Ng1 Kd4
11    11.40   0.65   1. g6 hxg6 2. Ra1 Qg2 3. Rg1 Kxd5 4.
                     Rxg2 hxg2 5. Nf3 g5 6. Ng1 g4
11->  13.14   0.65   1. g6 hxg6 2. Ra1 Qg2 3. Rg1 Kxd5 4.
                     Rxg2 hxg2 5. Nf3 g5 6. Ng1 g4
12    16.01   0.70   1. g6 hxg6 2. Ra1 Qg2 3. Rg1 Kxd5 4.
                     Rxg2 hxg2 5. Nf3 g5 6. Ng1 Kd4 7. Kf3
12->  19.53   0.70   1. g6 hxg6 2. Ra1 Qg2 3. Rg1 Kxd5 4.
                     Rxg2 hxg2 5. Nf3 g5 6. Ng1 Kd4 7. Kf3
13    25.97   0.74   1. g6 hxg6 2. Ra1 Qg2 3. Rg1 Kxd5 4.
                     Rxg2 hxg2 5. Nf3 Ke4 6. Ng1 d6 7. h4
                     Kd4
13->  33.75   0.74   1. g6 hxg6 2. Ra1 Qg2 3. Rg1 Kxd5 4.
                     Rxg2 hxg2 5. Nf3 Ke4 6. Ng1 d6 7. h4
                     Kd4
14    47.92     ++   1. g6!!
14    56.36   1.10   1. g6 hxg6 2. Ra1 Qg2 3. Rg1 Kxd5 4.
                     Rxg2 hxg2 5. Nf3 Ke4 6. Ng1 Kf4 7.
                     Kd3 g5 8. Kd4
14->   1:07   1.10   1. g6 hxg6 2. Ra1 Qg2 3. Rg1 Kxd5 4.
                     Rxg2 hxg2 5. Nf3 Ke4 6. Ng1 Kf4 7.
                     Kd3 g5 8. Kd4
15     1:09     --   1. g6
15     1:38   1.15   1. g6 hxg6 2. Ra1 Qg2 3. Rg1 Kxd5 4.
                     Rxg2 hxg2 5. Nf3 Kc5 6. Ng1 d5 7. Kd3
                     d4 8. f3 g5
15->   2:14   1.15   1. g6 hxg6 2. Ra1 Qg2 3. Rg1 Kxd5 4.
                     Rxg2 hxg2 5. Nf3 Kc5 6. Ng1 d5 7. Kd3
                     d4 8. f3 g5
16     4:06   1.27   1. g6 hxg6 2. Ra1 Qg2 3. Rg1 Kxd5 4.
                     Rxg2 hxg2 5. Nf3 Kc5 6. Ng1 d5 7. Kd3
                     g5 8. f3 d4 <HT>

Jarkko



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