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Subject: Re: Drawn Position

Author: Robert Hyatt

Date: 11:21:29 01/01/04

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On January 01, 2004 at 07:29:02, Manfred Rosenboom wrote:

>Hi,
>
>do any of your engines evaluate this position as drawn ?
>
>[D]8/8/3q4/7p/7k/2N2P2/6P1/7K b - - 0 1
>
>Black: any queen move - White: Ne4
>
>Ruffian 2.0.0 is the only of my engines, which evaluates this position as drawn.

Ruffian is not "evaluating" this as drawn.  It is searching for a way to
win and gets bottled in by repetitions to produce the draw score.  IE this
isn't about "knowledge" at all...  It is about search...



>
>Best,
>Manfred
>
>Ruffian 2.0.0  UCI 120 MB (AMD 1.8 GHz):
> 1   00:00  5.36   Qd6f8
> 1   00:00  5.39   Qd6e7
> 1   00:00  5.40   Qd6e6
> 1   00:00  5.50   Qd6f4
> 1   00:00  5.65   Kh4g5
> 2   00:00 -5.44   Kh4g5 Nc3e4+ Kg5f4
> 2   00:00  5.34   Qd6f4 Nc3e4
> 3   00:00  5.24   Qd6f4 Nc3e4 Qf4f5
> 3   00:00  5.34   Qd6e5 Nc3e4 Qe5f4
> 4   00:00  5.12   Qd6e5 Nc3e4 Qe5c7 Kh1g1
> 4   00:00  5.14   Qd6f4 Nc3e4 Qf4e5 Kh1g1
> 5   00:00  5.14   Qd6f4 Nc3e4 Qf4e5 g2g3+ Kh4h3 Kh1g1
> 5   00:00  5.16   Qd6a6 Kh1h2 Kh4g5 Nc3e4+ Kg5f4 Kh2h3
> 6   00:00  5.12   Qd6a6 Nc3e4 Qa6c4 Kh1h2 Qc4e2 Kh2g1
> 6   00:00  5.14   Qd6f4 Nc3e4 Qf4e5 g2g3+ Kh4h3 Kh1g1 Qe5e6
> 7   00:00  5.05   Qd6f4 Nc3e4 Qf4e5 Kh1g1 Qe5d4+ Kg1h2 Qd4b2 f3f4
> 8   00:00  5.14   Qd6f4 Nc3e4 Qf4e5 Kh1g1 Qe5d4+ Kg1h2 Qd4b2 Kh2g1 Qb2e5 g2g3+
> 9   00:00  5.04   Qd6f4 Nc3e4 Qf4e5 Kh1g1 Qe5d4+ Kg1h2 Qd4b2 Kh2g1 Qb2b6+ Kg1h2
>Qb6e6 g2g3+
>10   00:00  5.04   Qd6f4 Nc3e4 Qf4e5 Kh1g1 Qe5d4+ Kg1h2 Qd4b2 Kh2g1 Qb2g7 Kg1h2
>Qg7d4 g2g3+
>11   00:00  5.11   Qd6f4 Nc3e4 Qf4e5 Kh1g1 Qe5d4+ Kg1h2 Qd4b2 Kh2g1 Qb2e2 Kg1h2
>Qe2c2 Kh2g1
>12   00:00  5.14   Qd6f4 Nc3e4 Qf4e5 Kh1g1 Qe5b2 Kg1h2 Qb2e2 Kh2g1 Qe2d1+ Kg1f2
>Qd1d4+ Kf2e2 Qd4b2+ Ke2f1 Qb2e5
>13   00:00  5.14   Qd6f4 Nc3e4 Qf4e5 Kh1g1 Qe5b2 Kg1h2 Qb2e2 Kh2g1 Qe2d1+ Kg1f2
>Qd1c2+ Kf2f1 Qc2c4+ Kf1f2 Qc4a2+ Kf2f1 Qa2d5 g2g3+
>14   00:00  5.11   Qd6f4 Nc3e4 Qf4e5 Kh1g1 Qe5b2 Kg1h2 Qb2e2 Kh2g1 Qe2d1+ Kg1f2
>Qd1c2+ Kf2f1 Qc2c4+ Kf1f2 Qc4a2+ Kf2f1 Qa2a1+ Kf1e2 Qa1b2+ Ke2f1 Qb2c2 g2g3+
>Kh4h3 Kf1g1
>15   00:00  5.05   Qd6f4 Nc3e4 Qf4e5 Kh1g1 Qe5b2 Kg1h2 Qb2e2 Kh2g1 Qe2d1+ Kg1h2
>Qd1c2 Kh2h1 Qc2c7 Kh1g1 Qc7c1+ Kg1h2 Qc1b2 f3f4 Kh4g4
>16   00:01  5.14   Qd6f4 Nc3e4 Qf4e5 Kh1g1 Qe5b2 Kg1h2 Qb2e2 Kh2g1 Qe2d1+ Kg1h2
>Qd1c2 Kh2h1 Qc2c7 Kh1g1 Qc7b6+ Kg1h2 Qb6b2
>17   00:01  5.04   Qd6f4 Nc3e4 Qf4e5 Kh1g1 Qe5b2 Kg1h2 Qb2e2 Kh2g1 Qe2d1+ Kg1h2
>Qd1c2 Kh2h1 Qc2c7 Kh1g1 Qc7a7+ Kg1h2 Qa7a2 Kh2g1 Qa2a1+ Kg1h2 Qa1d4 g2g3+
>18   00:02  5.04   Qd6f4 Nc3e4 Qf4e5 Kh1g1 Qe5b2 Kg1h2 Qb2e2 Kh2g1 Qe2d1+ Kg1h2
>Qd1c2 Kh2h1 Qc2c7 Kh1g1 Qc7a7+ Kg1h2 Qa7a2 Kh2h1 Qa2d5 Kh1h2 Qd5f5 g2g3+
>19   00:03  5.09   Qd6f4 Nc3e4 Qf4e5 Kh1g1 Qe5b2 Kg1h2 Qb2e2 Kh2g1 Qe2d1+ Kg1h2
>Qd1c2 Kh2h1 Qc2c7 Kh1g1 Qc7b8 g2g3+ Kh4h3 Kg1f2 Qb8a7+ Kf2e2 h5h4 g3g4 Qa7g7
>g4g5
>20   00:04  5.01   Qd6f4 Nc3e4 Qf4e5 Kh1g1 Qe5b2 Kg1h2 Qb2e2 Kh2g1 Qe2d1+ Kg1h2
>Qd1c2 Kh2h1 Qc2c7 Kh1g1 Qc7b8 Kg1h1 Qb8a7 Kh1h2 Qa7a2 Kh2g1 Qa2c2 Kg1h2 Qc2a2
>21   00:07  5.04   Qd6f4 Nc3e4 Qf4e5 Kh1g1 Qe5b2 Kg1h2 Qb2e2 Kh2g1 Qe2d1+ Kg1h2
>Qd1c2 Kh2h1 Qc2c7 Kh1g1 Qc7b8 Kg1h1 Qb8a7 Kh1h2 Qa7a2 Kh2g1 Qa2e2 Kg1h2 Qe2d3
>g2g3+
>22-  00:09  4.69   Qd6f4
>22   00:11  4.90   Qd6f4 Nc3e4 Qf4e5 Kh1g1 Qe5b2 Kg1h2 Qb2e2 Kh2g1 Qe2d1+ Kg1h2
>Qd1c2 Kh2h1 Qc2c4 Kh1h2 Qc4a2 Kh2h1 Qa2c2 Kh1h2 Qc2a2
>23-  00:14  4.55   Qd6f4
>23   00:16  0.00   Qd6f4 Nc3e4 Qf4e5 Kh1g1 Qe5b2 Kg1h2 Qb2e2 Kh2g1 Qe2d1+ Kg1h2
>Qd1c2 Kh2h1 Qc2c4 Kh1h2 Qc4a2 Kh2h1 Qa2c2 Kh1h2 Qc2a2
>24   00:21  0.00   Qd6f4 Nc3e4 Qf4e5 Kh1g1 Qe5b2 Kg1h2 Qb2e2 Kh2g1 Qe2d1+ Kg1h2
>Qd1c2 Kh2h1 Qc2c4 Kh1h2 Qc4a2 Ne4c3 Qa2c2 Nc3e4 Qc2a2
>25   00:27  0.00   Qd6f4 Nc3e4 Qf4e5 Kh1g1 Qe5b2 Kg1h2 Qb2e2 Kh2g1 Qe2d1+ Kg1h2
>Qd1c2 Kh2h1 Qc2c4 Kh1h2 Qc4a2 Ne4c3 Qa2c2 Nc3e4 Qc2a2
>26   00:35  0.00   Qd6f4 Nc3e4 Qf4e5 Kh1g1 Qe5b2 Kg1h2 Qb2e2 Kh2g1 Qe2d1+ Kg1h2
>Qd1c2 Kh2h1 Qc2c4 Kh1h2 Qc4a2 Ne4c3 Qa2c2 Nc3e4 Qc2a2
>27   00:47  0.00   Qd6f4 Nc3e4 Qf4e5 Kh1g1 Qe5b2 Kg1h2 Qb2e2 Kh2g1 Qe2d1+ Kg1h2
>Qd1c2 Kh2h1 Qc2c4 Kh1h2 Qc4a2 Ne4c3 Qa2c2 Nc3e4 Qc2a2
>28   01:05  0.00   Qd6f4 Nc3e4 Qf4e5 Kh1g1 Qe5b2 Kg1h2 Qb2e2 Kh2g1 Qe2d1+ Kg1h2
>Qd1c2 Kh2h1 Qc2c4 Kh1h2 Qc4a2 Ne4c3 Qa2c2 Nc3e4 Qc2b2 Kh2g1 Qb2c2 Kg1h1
>29   01:40  0.00   Qd6f4 Nc3e4 Qf4e5 Kh1g1 Qe5b2 Kg1h2 Qb2e2 Kh2g1 Qe2d1+ Kg1h2
>Qd1c2 Kh2h1 Qc2c4 Kh1h2 Qc4a2 Ne4c3 Qa2c2 Nc3e4 Qc2b2 Kh2g1 Qb2c2 Kg1h1



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