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

Author: Bryan Hofmann

Date: 09:34:28 05/09/04

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>                 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)


Tao57-Beta
 1   00:00 -9.86   Qxg5 hxg5 Rxg6+ Kh7 Rxg5+ Kh6
 1   00:00 -6.26   Be4
 2   00:00 -8.59   Be4 Rxg2+ Kh1 Rh2+ Kg1
 3   00:00 -M4  Be4 Rxg2+ Kh1 Rh2+ Kg1 Rh1+ Bxh1 Bh2+
 3+  00:00 -299.92   Qxg5
 3   00:00 -6.08   Qxg5 Bh2+ Kxh2 hxg5 Rxg6+ Kh7 Rxg5+ Kh6
 4   00:00 -5.35   Qxg5 hxg5 Rxg6+ Kh7 Rxe6+ Be4 Bxe4+ Kg8 Rg6+ Kh7 Rxg5+ Kh6
 5   00:00  0.00   Qxg5 hxg5 Rxg6+ Kh7 Rxe6+ Be4 Bxe4+ Kg8 Rg6+ Kh7 Re6+
 6   00:00  0.00   Qxg5 hxg5 Rxg6+ Kh7 Rxe6+ Be4 Bxe4+ Kg8 Rg6+ Kh7 Re6+
 7   00:00  0.00   Qxg5 hxg5 Rxg6+ Kh7 Rxe6+ Be4 Bxe4+ Kg8 Rg6+ Kh7 Re6+
 8   00:00  0.00   Qxg5 hxg5 Rxg6+ Kh7 Rxe6+ Kg8 Rg6+ Kh7 Rxd6+ Kg8 Rg6+ Kh7
Rxc6+ Kg7 Rg6+ Kh7 Rgf6+ Kg8 Rg6+ Kh7
 9   00:01  0.00   Qxg5 hxg5 Rxg6+ Kh7 Rxe6+ Kg8 Rg6+ Kh7 Rxd6+ Kg8 Rg6+ Kh7
Rxc6+ Kg7 Rg6+ Kh7 Rgf6+ Kg8 Rg6+ Kh7
10   00:02  7.47   Qxg5 hxg5 Rxg6+ Kh7 Rxe6+ Kg8 Rg6+ Kh7 Rxd6+ Be4 Bxe4+ Kg8
Rg6+ Kh7 Rxb6+ Kg8 Rg6+ Kh7 Ra6+ Kg7 Rxa2 Re8
11   00:09  7.40   Qxg5 Bh2+ Kxh2 hxg5 Rxg6+ Kh7 Rxe6+ Be4 Bxe4+ Kg8 Rg6+ Kh7
Rxb6+ Kg8 Rg6+ Kh7 Ra6+ Kg7 Rxa2 Re8 Re2 Nc6
12   00:26  7.45   Qxg5 Bh2+ Kxh2 hxg5 Rxg6+ Kh7 Rxe6+ Kg8 Rg6+ Kh7 Rxc6+ Kg8
Rg6+ Kh7 Rxb6+ Kg8 Rg6+ Kh7 Ra6+ Kg7 Rxa2 Ne6 Raa1 Nf4



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