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Subject: Re: position without Ng5, good test

Author: Anthony Cozzie

Date: 22:05:31 10/18/02

Go up one level in this thread


On October 19, 2002 at 00:11:46, Will Singleton wrote:

>On October 18, 2002 at 19:33:17, Anthony Cozzie wrote:
>
>>On October 18, 2002 at 12:10:06, Will Singleton wrote:
>>
>>>Adjusted position with the h7 pawn moved to h6, which prevents Ng5.
>>>I would be surprised if any amateur program can find this, other
>>>than Ruffian.
>>>
>>>[D]r1b1k2r/pp3pp1/4pb1p/2n5/3RB3/4BN2/PqP1QPPP/3R2K1 w kq - 0 1
>>
>>Zappa does find it, although it needs 15(?!) ply and just over an hour.
>>
>>1. Qc4 Bd7
>> + (-1.00)      Depth: 5        00:00:00.26     31kN
>>1. Qc4 Nxe4 2. Bc1 Qb6 3. Rxe4
>> = (-0.59)      Depth: 5        00:00:00.34     43kN
>>1. Qc4 Nxe4 2. Bxh6 Bxd4
>> - (-0.84)      Depth: 6        00:00:00.64     86kN
>>1. Bc1 Qb6 2. Rd6 Qa5 3. Bd5 O-O
>> = (-1.06)      Depth: 6        00:00:00.90     135kN
>>1. Qc4 Nxe4 2. Rxe4 O-O 3. Qb3 Qxb3 4. cxb3
>> = (-0.94)      Depth: 7        00:00:01.78     354kN
>>1. Qc4 Nxe4 2. Rxe4 O-O 3. Bc5 Re8 4. Qa4 b5
>> = (-1.15)      Depth: 8        00:00:03.80     1016kN
>>1. Qc4 Nxe4 2. Rxe4 O-O 3. Qb3 Qc3 4. Ra4 Qxb3 5. cxb3
>> = (-0.94)      Depth: 9        00:00:07.84     2402kN
>>1. Qc4 Nxe4 2. Rxe4 O-O 3. Bd4 Bxd4 4. Nxd4 b6 5. c3 Bb7
>> = (-1.17)      Depth: 10       00:00:24.53     8151kN
>>1. Qc4 Nxe4 2. Rxe4 O-O 3. Bd4 Bxd4 4. Nxd4 Bd7 5. Qb3 Qxb3 6. cxb3
>> = (-0.94)      Depth: 11       00:01:00.04     20233kN
>>1. a3 Nxe4 2. Rxe4 O-O 3. Ra4 a5 4. Bc5 Re8 5. Bd4 Bxd4 6. Nxd4 Bd7
>> = (-1.09)      Depth: 12       00:04:00.73     82694kN
>>1. Qc4 Nxe4 2. Rxe4 Bd7 3. Bd4 Qb5 4. Qxb5 Bxb5 5. Bxf6 gxf6 6. Nd4 Bc4 7. a4
>> = (-1.03)      Depth: 13       00:12:17.16     254172kN
>>1. Nd2 O-O 2. Rc4 Nxe4 3. Nxe4 b6 4. Bc1 Qe5 5. Qf3 Be7 6. Nc5 b5 7. Qxa8 bxc4
>> = (-1.02)      Depth: 14       00:41:49.80     898284kN
>>1. Rd8 Bxd8 2. Bxc5 Bd7 3. Qd2 Ba4 4. Qd6 Qxa2 5. Bxb7
>> + (-0.77)      Depth: 15       01:00:26.49     1320066kN
>>1. Rd8 Bxd8 2. Bxc5 Be7 3. Bd4 Qb4 4. Bxg7 Rg8 5. Bxh6 Bf6 6. a3 Qb6 7. Kf1 Bd7
>>8. Bh7 Rg4
>> = (-0.76)      Depth: 15       01:46:42.98     2283563kN
>
>Uh, Zappa?  Can I download it, or will you shoot me a copy?
>
>Will

Zappa = my engine, so no you can't just download it :)

Currently it only runs on Linux, and it isn't really finished.



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