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Subject: Re: Windmill tactical Positions are too easy for chess programs

Author: Anthony Cozzie

Date: 07:08:55 05/09/04

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On May 09, 2004 at 10:02:18, Jorge Pichard wrote:

>On May 09, 2004 at 09:46:22, Anthony Cozzie wrote:
>
>>On May 09, 2004 at 09:00:16, Jorge Pichard wrote:
>
>Here is a very silly position, constructed by Mr. Matsukevich for the purpose of
>illustrating the tactical themes of "The Windmill".  Watch how all of Black's
>pieces drop off!
>
>>>[D]5n1k/1bnbnbR1/6bn/6n1/6b1/2B3n1/1K4b1/r7 w - - 0 1
>>
>>1. Rg7xf7 Kh8-g8 2. Rf7-g7 Kg8-h8 3. Rg7xe7 Kh8-g8 4. Re7-g7 Kg8-h8 5. Rg7xg6
>>Kh8-h7 6. Rg6-g7 Kh7-h8 7. Rg7xg5 Kh8-h7 8. Rg5-g7 Kh7-h8 9. Rg7xg4 Kh8-h7 10.
>>Rg4-g7 Kh7-h8 11. Rg7xg3 Kh8-h7 12. Rg3-g7 Kh7-h8 13. Rg7xd7 Kh8-g8 14. Rd7-g7
>>Kg8-h8 15. Rg7xc7 Kh8-g8 16. Rc7-g7 Kg8-h8 17. Rg7xg2 Kh8-h7 18. Rg2-g7 Kh7-h8
>>19. Rg7xb7 Kh8-g8 20. Kb2xa1
>> = (3.50)       Depth: 19/39    00:00:01.95     1607kN
>>
>>anthony
>
>
>                 HERE IS ANOTHER WINDMILL TACTICAL POSITION
>
>Here is a simply example, in which White is heavily behind on material, but sees
>a chance to set up a windmill, and invests his Queen!
>
>
>New game,
>[D]3n3r/2p3k1/1pbbpRpp/6r1/3P4/2PBQ2P/q5P1/5RK1 w - - 0 1
>
>Analysis by Shredder 8:
>
>1.Qxg5 Qxg2+ 2.Qxg2
>  -+  (-9.33)   Depth: 1/4   00:00:00
>  -+  (-10.45)   Depth: 1/8   00:00:00
>1.Be4 Bh2+ 2.Kxh2 Rxg2+ 3.Bxg2
>  -+  (-10.44)   Depth: 1/8   00:00:00
>  -+  (-11.85)   Depth: 3/9   00:00:00
>1.Qxg5 hxg5 2.Rxg6+ Kh7 3.Rxg5+ Kh6
>  -+  (-11.84)   Depth: 3/9   00:00:00
>  -+  (-11.49)   Depth: 3/9   00:00:00
>1.R1f2 Rxg2+ 2.Kf1 Qa1+ 3.Ke2 Rxf2+ 4.Qxf2 Qb2+ 5.Ke3 Qc1+ 6.Ke2
>  -+  (-11.48)   Depth: 3/9   00:00:00
>  -+  (-10.62)   Depth: 5/19   00:00:00
>1.Qxg5 hxg5 2.Rxg6+ Kh7 3.Rxe6+ Kg7 4.Rg6+ Kh7 5.Rxd6+ Be4 6.Bxe4+ Kg8 7.Rg6+
>Kh7 8.Rxb6+ Kg7 9.Rg6+ Kh7 10.Ra6+ Kg7 11.Rxa2 Re8 12.Bd5 g4 13.Ra7 Re7 14.hxg4
>Rd7 15.Rf5
>  -+  (-10.61)   Depth: 5/19   00:00:00
>  +-  (9.95)   Depth: 20/52   00:03:45  43794kN
>
>(Pichard, MyTown 09.05.2004)

This one is a bit harder.

1. Qe3xg5 Bd6-h2 2. Kg1xh2 h6xg5 3. Rf6xg6 Kg7-h7 4. Rg6-f6 Bc6-e4 5. Bd3xe4
Kh7-g8 6. Rf6-g6 Kg8-h7 7. Rg6-f6
 = (0.00)       Depth: 6/17     00:00:00.21     34kN
1. Qe3xg5 Bd6-h2 2. Kg1xh2 h6xg5 3. Rf6xg6 Kg7-h7 4. Rg6xe6 Kh7-g8 5. Re6-g6
Kg8-h7 6. Rg6xc6 Kh7-g8 7. Rc6-g6 Kg8-h7 8. Rg6xb6 Kh7-g8 9. Rb6-g6 Kg8-h7 10.
Rg6-a6 Kh7-g7 11. Ra6xa2 Nd8-e6 12. Kh2-g3
 = (9.67)       Depth: 14/36    00:00:53.28     45626kN

anthony

• Re: Windmill tactical Positions are too easy for chess programs Vincent Diepeveen 06:24:08 05/10/04

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