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Subject: Re: Test Position: Fire on board!

Author: Roy Brunjes

Date: 13:14:10 02/09/03

Go up one level in this thread


On February 09, 2003 at 15:26:20, Drexel,Michael wrote:

>Yet another Shirov brilliancy:
>
>[D] r1b1k2r/p1qpb1pp/2p1p3/4R3/3Q4/2N5/PPP2PPP/R1B3K1 w kq - 0 13
>
>Find 13.Bg5!
>
>[Event "BL 0203 SG Porz - Lübecker SV"]
>[Site "Porz"]
>[Date "2003.02.08"]
>[Round "10.3"]
>[White "Shirov, Alexei"]
>[Black "Van Wely, Loek"]
>[Result "1-0"]
>[ECO "B30"]
>[WhiteElo "2699"]
>[BlackElo "2681"]
>[Annotator ""]
>[PlyCount "49"]
>[EventDate "2003.??.??"]
>
>1. e4 c5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Qc7 5. O-O e6 6. Re1 Ng4 7. Bxc6 bxc6 8.
>e5 f6 9. d4 cxd4 10. Qxd4 Nxe5 11. Nxe5 fxe5 12. Rxe5 Be7 13. Bg5 Bd6 (13... d6
>14. Bxe7 dxe5 15. Qc5 Rb8 16. Bd6 Qb6 17. Qxe5 Qxb2 18. Re1 Rb7 19. Qh5+ g6 20.
>Qf3 Qxc2 21. Bc5 $18) 14. Bf4 c5 (14... Bxe5 15. Bxe5 Qb6 16. Qg4 $18) 15. Qe3
>a6 (15... Rb8 16. Nd5 $5 (16. Rxc5 Qxc5 17. Qxc5 Bxc5 18. Bxb8 $14) 16... Qb7 (
>16... Qc6 17. Qg3 $18) 17. Rxe6+ dxe6 18. Bxd6 Qxb2 19. Re1 Rb7 20. Nc7+ Rxc7
>21. Bxc7 O-O 22. Qxc5 $16) 16. Nd5 Qc6 17. Rg5 h6 18. Bxd6 hxg5 (18... Qxd6 19.
>Rd1 $18) 19. Rd1 Rh6 20. Ne7 Qa4 21. Qf3 Bb7 22. Qxb7 Rd8 23. Ng8 Rh8 24. Qf3
>Rxg8 25. Qh5+ 1-0

Here are two examples from CM9000.  The first is the junior personality I
created (not necessarily the best, but a tactically oriented personality) and
the second is CM9000 (same as Chessmaster but with 32 MB hashtables vs the
default 4 MB).

Hardware:  Pentium III 500 MHz  Hashtables = 32 MB for both personalities


Personality = Junior

Time	Depth	Score	Positions	Moves
0:01	1/6	0.82	75453		13.Rg5 Bf6 14.Qc5 Ba6 15.Rg3 O-O-O
					16.Be3
0:01	1/6	0.86	85506		13.Bg5 Bd6 14.Bf4 c5 15.Rxe6+ dxe6
					16.Qxd6 Qxd6 17.Bxd6
0:03	1/7	1.17	199039		13.Bg5 Bd6 14.Bf4 Bxe5 15.Bxe5
					Qb6 16.Bxg7 Qxd4 17.Bxd4
0:06	1/8	0.90	369463		13.Bg5 Bd6 14.Bf4 c5 15.Rxe6+ dxe6
					16.Qxd6 Qxd6 17.Bxd6 Bd7 18.Re1
0:20	1/9	1.05	1231024		13.Bg5 Bd6 14.Bf4 c5 15.Rxe6+ dxe6
					16.Qxd6 Qxd6 17.Bxd6 Bd7 18.Re1
					O-O-O 19.Bxc5
0:51	1/10	1.01	3363441		13.Bg5 Qb6 14.Qxb6 axb6 15.Bxe7
					Kxe7 16.Re4 d5 17.Rb4 b5 18.Rg4
					Kf8 19.Re1
2:57	1/11	0.95	12065238	13.Bg5 d6 14.Bxe7 Qxe7 15.Ree1
					O-O 16.Ne4 d5 17.Nc5 Qf6 18.Rad1
					Qxd4 19.Rxd4
5:53	1/12	1.01	24720340	13.Bg5 d6 14.Bxe7 Qxe7 15.Ree1
					O-O 16.Ne4 d5 17.Nc5 Rb8 18.Rad1
					Qf6

Personality = CM9000

Time	Depth	Score	Positions	Moves
0:06	1/7	0.00	337240		13.Bf4 d6 14.Ree1 O-O 15.Rad1 c5
					16.Nd5 cxd4 17.Nxc7
0:12	1/8	-0.06	727741		13.Bf4 Qb6 14.Re4 O-O 15.Qd2 d5
					16.Na4 Qd8
0:14	1/8	0.00	886890		13.Rh5 O-O 14.Qd3 g6 15.Rh6 d5
					16.Rxg6+ hxg6 17.Qxg6+ Kh8 18.Qh5+
					Kg8 19.Qg6+
0:17	1/8	0.20	1099745		13.Bg5 Bd6 14.Bf4 Bxe5 15.Bxe5
					c5 16.Nb5 Qb6 17.Qa4
0:30	1/9	0.19	1955773		13.Bg5 d6 14.Bxe7 dxe5 15.Qc5 Rb8
					16.Bd6 Qb6 17.Qxe5 Qxb2
1:26	1/10	0.22	5961504		13.Bg5 Bd6 14.Rf5 Rf8 15.Rxf8+
					Kxf8 16.Qh4 Kg8 17.Rd1 Ba6 18.Ne4
3:29	2/11	0.34	14692103	13.Bg5 Bd6 14.Rf5 Rf8 15.Rxf8+
					Kxf8 16.Qh4 Kg8 17.Rd1 Ba6 18.Ne4
					Be5 19.Nc5

It does appear this is rather easy for today's programs, even on slower
hardware.

Roy




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