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Subject: Re: The Art of Sacrifice...

Author: John Merlino

Date: 12:31:32 02/18/02

Go up one level in this thread


On February 17, 2002 at 21:35:42, Bob Basham wrote:

>White won in this position by playing 1. Nxf7 (KxN),
>then 2. Bxg6+..!
>
>My old version of Fritz 5.32 finds this even before the new version of Fritz 7..
>
>Could it be that when they make improvements on something in a chess program
>that it weakens another area?
>Just wondering...
>
>[D]r1b1r1k1/1p1n1p2/p1nBp1p1/q2pP1Np/P7/R2B3Q/2P2PPP/5RK1 w - -
>
>Some computor programs do not find Nxf7 at all...

Chessmaster 8000 sees it in 2+ seconds on my PIII-733:

Time	Depth	Score	Positions	Moves
0:00	1/4	1.07	6169		1. f4 Qb6+ 2. Kh1 Nc5 3. Qe3 Nxa4
0:01	2/5	1.28	29453		1. f4 Rd8 2. Ne4 Nb6 3. Nf6+ Kg7
0:02	2/6	1.27	81755		1. f4 Qb6+ 2. Rf2 Nc5 3. Bc4 Rd8
					4. Qc3
0:02	2/6	1.51	137855		1. Nxf7 Kxf7 2. Bxg6+ Kxg6 3. Rg3+
					Kh6 4. Qh4 Qd2 5. f4 Rg8 6. Rxg8
					Qd4+ 7. Kh1 Kh7
0:07	3/7	2.31	598260		1. Nxf7 Kxf7 2. Bxg6+ Kxg6 3. Rg3+
					Kh6 4. Qh4 Qd2 5. f4 Rg8 6. Rxg8
					Qd4+ 7. Kh1 Kh7 8. Qg5
0:22	3/8	4.18	2073636		1. Nxf7 Ndxe5 2. Nxe5 Nxe5 3. Qg3
					Ng4 4. h3 e5 5. hxg4
0:33	4/9	4.07	3005808		1. Nxf7 Ndxe5 2. Nxe5 Nxe5 3. Qg3
					Ng4 4. h3 e5 5. hxg4 Re6
1:13	4/10	4.33	6631170		1. Nxf7 Ndxe5 2. Nxe5 Nxe5 3. Qg3
					Ng4 4. h3 e5 5. hxg4 Re6 6. Bc4

jm



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