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Subject: CM9_OffSet finds Nf6+ in 7 seconds on P3/850...

Author: Dan Ellwein

Date: 08:58:05 04/15/04

Go up one level in this thread


On April 15, 2004 at 10:04:27, Mihaly Szalai wrote:

>[Event "Pucarevo (zt)"]
>[Site "?"]
>[Date "1987.??.??"]
>[Round "?"]
>[White "Marjanovic, S."]
>[Black "Yilmaz, T."]
>[Result "1-0"]
>[ECO "C84"]
>[WhiteElo "2505"]
>[BlackElo "2375"]
>[PlyCount "67"]
>[EventDate "1987.??.??"]
>
>{43/425} 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d4 exd4 6. O-O Be7 7. e5
>Ne4 8. Nxd4 Nxd4 9. Qxd4 Nc5 10. Nc3 Nxa4 {N} (10... O-O) 11. Qxa4 (11. Nxa4)
>11... O-O 12. Bf4 $1 (12. Be3 d5 $11) 12... b5 (12... f6 $2 13. Qc4+ {>< c7}) (
>12... d5 13. exd6 Bxd6 14. Rad1 Bd7 15. Qd4 Bxf4 16. Qxf4) 13. Qd4 Bb7 14. Rad1
>Bc6 15. Nd5 $14 {|^} Re8 16. Rd3 Bf8 (16... d6 17. exd6 (17. Nxc7 $16) 17...
>Bxd6 (17... cxd6 18. Rg3 f6 19. Bh6 g6 20. Re1 $16 {->}) 18. Rg3 Bf8 19. Bh6 $1
>$16 {->}) (16... Bxd5 17. Qxd5 d6 18. exd6 Bxd6 19. Bxd6 cxd6 20. Qxd6 $16) 17.
>Bg3 Qc8 $2 {/\ 18...Bd5 19.Qd5 d6} (17... d6 18. Nb4 (18. Bh4 dxe5 19. Qg4 Qxd5
>$1 20. Rxd5 Bxd5 $44) 18... Bxg2 19. Kxg2 c5 20. Qd5 cxb4 21. exd6 $16) 18.
>Nf6+ $1 gxf6 19. Bh4 Re6 (19... Be7 20. Qf4 $1 Qd8 21. exf6 Bf8 22. Rg3+ Kh8
>23. Qg5 $1 Bh6 24. Qxh6 Rg8 25. Rg7 Be4 26. f4 $18) 20. Rg3+ Kh8 21. Qg4 Bh6
>22. Qxe6 $3 fxe6 23. Bxf6+ Bg7 24. Rxg7 h5 (24... h6 25. Rd1 Qf8 $1 26. Rgxd7+
>Kg8 27. Rxc7 Be4 (27... Qc5 28. Rd3 Qxc2 29. Rg3+ Kf8 30. h3 $18) 28. Rdd7 $18)
>25. Rd1 Qf8 $1 26. Rg5+ $1 Kh7 27. Rxh5+ Kg6 28. Rg5+ Kf7 (28... Kh6 {/\ Qf6}
>29. Rg4 $1 Kh5 30. Rdd4 $18) 29. Rd4 Qh6 30. Rf4 $1 Qh7 31. Rfg4 Kf8 32. Rg7
>Qh8 33. Be7+ Ke8 34. Bb4 1-0
>
>Position after 17... Qc8:
>[D]r1q1rbk1/2pp1ppp/p1b5/1p1NP3/3Q4/3R2B1/PPP2PPP/5RK1 w - - 0 18
>
>18. Nf6+!
>
>Tactical minded people make this move much easier than chess programs. The white
>forces are promising ("this sac must be good"), however there is no mate attack
>and the brilliant queen sac four moves later would deserve another diagram.
>
>You should show it to your favourite engine. (I don't expect a long thread
>though.)
>
>Thanks
>Mihaly

Hi Mihaly

here's the output from CM9_OffSet...

P3/850

Time	Depth	Score	Positions	Moves
----	----	----	----		----
0:00	1/3	1.07	1598		1.c4 Qb7 2.Re1 f5
0:00	1/4	0.63	5435		1.c4 bxc4 2.Rd2 Bb5 3.Re1
0:00	1/4	1.06	6716		1.Re1 d6 2.Rdd1 Qb7 3.c4
0:00	1/4	1.12	9062		1.Qg4 Re6 2.Rfd1 Rg6 3.Qh4
0:00	1/4	1.21	20907		1.e6 Rxe6 2.Bxc7 Re2
0:00	1/5	1.15	26221		1.e6 Rxe6 2.Bxc7 Re2 3.Nf6+ Kh8
0:01	1/6	1.61	68508		1.e6 Rxe6 2.Nxc7 Re4 3.Qb6 Rb8
					4.Qxa6
0:01	1/7	1.58	114148		1.e6 Rxe6 2.Nxc7 Re4 3.Qb6 Rb8
					4.Qxa6 Qd8
0:02	1/8	2.11	234879		1.e6 Rxe6 2.Nxc7 Re4 3.Qb6 Rb8
					4.Qxa6 Re2 5.Qxc8 Rxc8
0:05	1/9	1.91	501002		1.e6 Rxe6 2.Nxc7 Re4 3.Qb6 Rb8
					4.Qxa6 Rb7 5.Nd5 Ra4
0:07	1/9	2.17	792165		1.Nf6+ gxf6 2.Bh4 Re6 3.Bxf6 Rxf6
					4.exf6 d5 5.Re1 Bd6 6.Qc3 Qd7 7.Rg3+
					Kh8
0:12	1/10	2.09	1392614		1.Nf6+ gxf6 2.Bh4 Re6 3.Bxf6 Rxf6
					4.exf6 Kh8 5.Rg3 Bh6 6.Re1 d6 7.Re7
					Qf5 8.Rxc7 Qxc2
0:26	1/11	2.19	3059113		1.Nf6+ gxf6 2.Bh4 Re6 3.Bxf6 Rxf6
					4.exf6 Kh8 5.Qg4 d5 6.Qxc8 Rxc8
					7.Rfd1 Bd6 8.Rc3
0:59	1/12	2.15	7183397		1.Nf6+ gxf6 2.Bh4 Re6 3.Bxf6 Rxf6
					4.exf6 Kh8 5.Qg4 Qd8 6.Qg5 Be4
					7.Rg3 Bg6 8.Rd1 c6 9.Rg4
2:51	1/13	2.38	20984639	1.Nf6+ gxf6 2.Bh4 Re6 3.Bxf6 Rxf6
					4.exf6 Kh8 5.Rg3 d6 6.Re1 Qf5 7.Qg4
					Qxg4 8.Rxg4 d5 9.Rg3 Rd8
Dan





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