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Subject: Re: A test position of true beauty! All engines seems to have trouble with

Author: John Merlino

Date: 18:28:46 12/18/02

Go up one level in this thread


On December 18, 2002 at 20:16:26, robert flesher wrote:

>[D]4rb2/1p1q1ppk/p1n1p2p/2p1Pn2/3PNR2/2P2K2/P2QBP2/6R1 w - - 0 1

This is indeed a little bit troublesome. CM9000, on a P3-733, finds Rxf5 in
2:02, and it prefers your second line which has the queen sacrifice on move 3:

Time	Depth	Score	Positions	Moves
0:00	1/5	-1.57	26952		1.Kg2 cxd4 2.Ng3 g5 3.Re4 Bc5
0:01	1/5	-1.51	62935		1.dxc5 Nxe5+ 2.Kg2 Qxd2 3.Nxd2
					Bxc5 4.Ne4 Ba3 5.Rd1
0:01	1/6	-1.70	102229		1.dxc5 Nxe5+ 2.Kg2 Qxd2 3.Nxd2
					Bxc5 4.Rb1 b5 5.Re1 f6
0:02	1/6	-1.35	151212		1.Rd1 cxd4 2.Kg2 Kg8 3.cxd4 Ncxd4
					4.Bh5
0:02	1/6	-1.32	169084		1.Kg2 cxd4 2.cxd4 Ncxd4 3.Kh2 Rc8
					4.Bh5
0:05	1/7	-1.47	365110		1.Kg2 cxd4 2.cxd4 Rd8 3.Kh3 Kh8
					4.Nd6 Bxd6 5.exd6 Qxd6
0:10	1/8	-1.44	826400		1.Kg2 cxd4 2.cxd4 Ncxd4 3.Bh5 Rc8
					4.Rc1 Bb4
0:26	1/9	-1.48	2171182		1.Kg2 cxd4 2.cxd4 Ncxd4 3.Bg4 Qd5
					4.Bxf5+ exf5 5.Rd1 Qxe5 6.Ng5+
					hxg5 7.Rxd4
1:17	1/10	-1.45	6597634		1.Kg2 cxd4 2.cxd4 Ncxd4 3.Bh5 Rd8
					4.Kh3 Nc6 5.Qb2 Qd3+ 6.Kh2 Nfd4
2:02	1/10	1.29	10552615	1.Rxf5 Nxd4+ 2.cxd4 exf5 3.Qxh6+
					Kxh6 4.Rh1+ Kg6 5.Kf4 Qc6 6.Bh5+
					Kh7 7.Bxf7+ Qh6+ 8.Rxh6+ Kxh6 9.Bxe8
					fxe4 10.d5
2:25	2/11	1.29	12696714	1.Rxf5 Nxd4+ 2.cxd4 exf5 3.Qxh6+
					Kxh6 4.Rh1+ Kg6 5.Kf4 Qc6 6.Bh5+
					Kh7 7.Bxf7+ Qh6+ 8.Rxh6+ Kxh6 9.Bxe8
					fxe4 10.d5
7:34	3/12	4.26	41901228	1.Rxf5 Nxd4+ 2.cxd4 exf5 3.Qxh6+
					Kxh6 4.Rh1+ Kg6 5.Kf4 Qc6 6.d5
					Qf6 7.Bh5+ Kh7 8.Nxf6+ gxf6 9.Bxf7+
					Bh6+ 10.Rxh6+ Kxh6 11.Bxe8 fxe5+
					12.Kxe5

jm



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