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Subject: Re: Test position (CM9 T05)

Author: Mike Byrne

Date: 17:39:02 09/17/04

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On September 17, 2004 at 18:05:40, Kurt Utzinger wrote:

>24.Bxg6!!
>[D]2r2rk1/p3bb1p/2n1Q1p1/q2pP3/3P1P2/p1NB1NR1/1P4P1/1K1R4 w - - 0 24
>
>[Event "New York"]
>[Site "New York"]
>[Date "1947.??.??"]
>[Round "?"]
>[White "Evans, L."]
>[Black "Pilnick, C."]
>[Result "1-0"]
>[ECO "C13"]
>[PlyCount "57"]
>
>1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Be7 5. Bxf6 Bxf6 6. e5 Be7 7. Qg4 O-O 8.
>O-O-O c5 9. h4 cxd4 10. Nce2 Nc6 11. f4 Qa5 12. Kb1 d3 13. cxd3 Bd7 14. Rh3
>Rac8 15. Rg3 g6 16. d4 b5 17. h5 Nb4 18. a3 Nc6 19. hxg6 fxg6 20. Nc3 b4 21.
>Bd3 Be8 22. Nf3 bxa3 23. Qxe6+ Bf7 24. Bxg6 axb2 25. Bxh7+ Kh8 26. Qh6 Qa1+ 27.
>Kc2 b1=Q+ 28. Rxb1 Nb4+ 29. Kd1 1-0
>
>
>****CM9_T05 on P4 1.8/32 MB hash****
>
>Time	Depth	Score	Positions	Moves
>0:01	1/5	-3.25	101303		24.Qg4 axb2 25.e6 Qa1+ 26.Kc2 Nxd4+
>					27.Nxd4 Rxc3+ 28.Kd2 Qc1+ 29.Ke2
>0:04	1/6	-3.94	255239		24.Qg4 Rb8 25.Nb5 Rxb5 26.Bxb5
>					Qxb5 27.Rd2 Qf1+ 28.Ka2 Nb4+ 29.Kb3
>					Qc4+ 30.Ka4 axb2 31.Rxb2 Qa6+ 32.Kb3
>0:05	1/6	-3.45	338728		24.Qd7 axb2 25.e6 Qa1+ 26.Kc2 Nxd4+
>					27.Kd2 b1=N+ 28.Nxb1 Bb4+ 29.Ke3
>					Nxe6
>0:10	1/7	-3.29	671636		24.Qd7 axb2 25.e6 Qa1+ 26.Kc2 Nxd4+
>					27.Kd2 b1=N+ 28.Nxb1 Bb4+ 29.Ke3
>					Bxe6
>0:27	1/8	-3.69	1830704		24.Qd7 axb2 25.e6 Qa1+ 26.Kc2 Nb8
>					27.exf7+ Kg7 28.Qb5 Rxc3+ 29.Kd2
>					Qc1+ 30.Ke2 Rxd3 31.Qxd3 b1=Q 32.Rxc1
>					Qxc1
>1:34	1/9	-3.83	6611609		24.Qd7 axb2 25.e6 Qa1+ 26.Kc2 Nxd4+
>					27.Kd2 Rxc3 28.exf7+ Rxf7 29.Qe8+
>					Bf8 30.Bb1 Rb3 31.Rxg6+ hxg6 32.Nxd4
>
>2:51	1/9	-1.58	12262258	24.Bxg6 Bxe6 25.Bxh7+ Kh8 26.Rh1
>					Bh4 27.Rxh4 Rxf4 28.Rxf4 axb2 29.Kxb2
>					Rb8+ 30.Kc2 Qa3
>4:22	1/10	-0.40	19047005	24.Bxg6 Bxe6 25.Bxh7+ Kh8 26.Rh1
>					a2+ 27.Nxa2 Rxf4 28.Bf5+ Bh4 29.Nxh4
>					Rf1+ 30.Rxf1 Nxd4 31.Bd3
>11:36	1/11	1.31	52142760	24.Bxg6 Bxe6 25.Bxh7+ Kh8 26.Rh1
>					a2+ 27.Nxa2 Bh4 28.Rxh4 Rxf4 29.Rxf4
>					Rb8 30.Bf5 Bxf5+ 31.Rxf5

some older engines solve this very fast on today's hardware -- mostly non null
movers...e.g. Frtitz 5.32 solves it in 10 seconds on my machine , Crafty with
null move off is even faster.



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