Author: Jeremiah Penery
Date: 16:53:36 12/08/03
Go up one level in this thread
On December 08, 2003 at 19:12:34, Steven Edwards wrote:
>On December 08, 2003 at 18:30:57, Steven Edwards wrote:
>
>>I've been testing Symbolic's low level search on the BWTC test suite. Althouh
>>the program can solve almost all of the 1,001 positions in a few seconds or less
>>each, there are a few holdouts.
>
>Here's BWTC.0570 (key move Rd1+):
>
>[D]1k1r4/1bp2p2/1p6/2r1PB1p/PQ4pP/6B1/5PP1/6K1 b - -
>
>[SI] [01] (1... Ba6) Score: -2.330
>[SI] [02] (1... Ba6 2. Kh2) Score: -2.330
>[SI] [03] (1... Ba6 2. Kh2 Rc4) Score: -2.330
>[SI] [04] (1... Ba6 2. Kh2 Rc4 3. Qb3) Score: -2.330
>[SI] [05] (1... Ba6 2. Kh2 Rc4 3. Qb3 Ka7) Score: -2.330
>[SI] [06] (1... Ba6 2. Kh2 Rc4 3. Qb3 Ka7 4. f4) Score: -2.330
>[SI] [07] (1... Ba6 2. Kh2 Rc4 3. Qb3 Rdd4) Score: -2.330
>[SI] [08] (1... Ba6 2. Kh2 Ka7) Score: -2.330
>[SI] [09] (1... Ba6 2. Kh2 Ka7 3. f4 Rd1) Score: -2.330
>[SI] [09] (1... Rc1+) Score: -1.330
>[SI] [09] (1... Rc1+ 2. Kh2 Rdd1 3. Qf8+ Ka7 4. Qa8+ Bxa8 5. Bf4 Rc4 6. Kg3 Rxa4
>7. Bc8) Score: +7.670
>[SI] [10] (1... Rc1+) Score: +8.670
>[SI] [10] (1... Rc1+ 2. Kh2 Rdd1 3. Qf8+ Ka7 4. Qa8+ Bxa8 5. Bf4 Rh1+ 6. Kg3
>Rh3+ 7. gxh3 Rg1+ 8. Kh2 Rh1+ 9. Kg3 Rxh3#) Score: MateIn9
>
>Does anyone else get this? Is there a faster mate?
Crafty gives:
6 0.29 ++ 1. ... Rd1+!!
6-> 0.31 2.30 1. ... Rd1+
7 0.32 ++ 1. ... Rd1+!!
7 0.33 -Mat09 1. ... Rd1+ 2. Kh2 Rcc1 3. Qf8+ Ka7
4. Qb8+ Kxb8 5. Bf4 Rh1+ 6. Kg3 Rh3+
7. gxh3 Rg1+ 8. Kh2 Rh1+ 9. Kg3 Rxh3#
7-> 0.34 -Mat09 1. ... Rd1+ 2. Kh2 Rcc1 3. Qf8+ Ka7
4. Qb8+ Kxb8 5. Bf4 Rh1+ 6. Kg3 Rh3+
7. gxh3 Rg1+ 8. Kh2 Rh1+ 9. Kg3 Rxh3#
8 0.35 -Mat09 1. ... Rd1+ 2. Kh2 Rcc1 3. Qf8+ Ka7
4. Qb8+ Kxb8 5. Bf4 Rh1+ 6. Kg3 Rh3+
7. gxh3 Rg1+ 8. Kh2 Rh1+ 9. Kg3 Rxh3#
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