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Subject: Re: Testpositions - two great games by Shredder 7

Author: John Merlino

Date: 17:20:11 01/29/03

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On January 29, 2003 at 19:45:02, bobby palacios wrote:

>Pharaon 2.62 vs Shredder 7 (game in 25, p4 2.47ghz)
>
>[D] 6k1/8/p1p1p3/2Bqbppp/PQ6/2P2PPP/1P3RK1/3r4 b - - 0 36
>
>..Bxg3!

This one IS easy. Chessmaster 9000, on a P3-733, finds it in one second:

Time	Depth	Score	Positions	Moves
0:00	1/3	0.09	1598		36...h4 37.c4 Qd3
0:00	1/3	-0.04	1815		36...g4 37.hxg4 hxg4
0:00	1/4	-0.53	7930		36...g4 37.Be3 Qd3 38.Qc5 gxf3+
					39.Rxf3
0:00	1/5	-0.55	33378		36...g4 37.c4 gxf3+ 38.Rxf3 Rd2+
					39.Bf2 Qd4
0:00	1/6	-0.67	57985		36...g4 37.hxg4 hxg4 38.Be3 Qd3
					39.Bh6 gxf3+ 40.Rxf3
0:01	1/6	-2.02	126912		36...Bxg3 37.c4 Qe5 38.Rc2 Be1
					39.Qa3 Qg3+ 40.Kf1 Qxh3+ 41.Rg2
0:02	1/7	-2.98	195930		36...Bxg3 37.c4 Qe5 38.Rd2 Qe1
					39.Rxd1 Qe2+ 40.Kg1 Qxd1+ 41.Kg2
					Qe2+ 42.Kg1 Qxf3
0:04	1/8	-2.98	345715		36...Bxg3 37.c4 Qe5 38.Rd2 Qe1
					39.Rxd1 Qe2+ 40.Kg1 Qxd1+ 41.Kg2
					Qe2+ 42.Kg1 Qxf3
0:08	1/9	-2.93	715348		36...Bxg3 37.c4 Qe5 38.Rd2 Bh4
					39.Bd6 Qe1 40.Rxd1 Qf2+ 41.Kh1
					Qxf3+ 42.Kh2 Qe2+ 43.Kg1 Qxd1+
					44.Kh2 Kh7
0:29	2/10	-3.01	2786727		36...Bxg3 37.Bd4 Bxf2 38.Qb8+ Kf7
					39.Qb7+ Ke8 40.Kxf2 Rxd4 41.cxd4
					Qxd4+ 42.Ke2 Qxa4 43.b3 Qa2+ 44.Kd3
1:40	3/11	-3.06	10261036	36...Bxg3 37.Bd4 Bxf2 38.Qb8+ Kf7
					39.Qb7+ Ke8 40.Kxf2 e5 41.Qc8+
					Ke7 42.Be3 f4 43.Qc7+ Kf6

>Shredder 7 vs TheKing 3.23 (game in 25, p4 2.47ghz)
>
>[D] rnb2b1r/5kpp/pq3n2/2p5/2p5/5N2/PP2QPPP/RNBR2K1 w - - 0 13
>
>Ng5+!

This one is a bit harder. On the humble P3-733, it takes CM9000 2:24 to find it
(about 30-40 seconds on today's top hardware):

Time	Depth	Score	Positions	Moves
0:00	1/3	-1.20	2587		13.Qxc4+ Ke8 14.Nc3 Be6 15.Qd3
0:00	1/3	-0.96	3100		13.Ng5+ Kg6 14.Nf3 Nc6 15.Qxc4
0:00	1/4	-0.84	7117		13.Ng5+ Kg6 14.Qxc4 Ra7 15.Nf3 Bd6
0:00	1/5	-0.61	19956		13.Ng5+ Kg6 14.Qxc4 Qc7 15.Nf3
					Nc6 16.Nc3
0:00	1/5	0.00	40763		13.Ne5+ Kg8 14.Nd7 Bxd7 15.Rxd7
					h6 16.Qxc4+ Kh7 17.Qd3+ Kg8 18.Qc4+
0:01	1/6	0.00	57428		13.Ne5+ Kg8 14.Nd7 Bxd7 15.Rxd7
					h6 16.Qxc4+ Kh7 17.Qd3+ Kg8 18.Qc4+
0:01	1/7	0.00	118879		13.Ne5+ Kg8 14.Nd7 Bxd7 15.Rxd7
					h6 16.Qxc4+ Kh7 17.Qd3+ Kg8 18.Qc4+
0:03	1/8	0.00	308289		13.Ne5+ Kg8 14.Nd7 Bxd7 15.Rxd7
					h6 16.Qxc4+ Kh7 17.Qd3+ Kg8 18.Qc4+
0:17	1/9	0.00	1515445		13.Ne5+ Kg8 14.Nd7 Bxd7 15.Rxd7
					h6 16.Qxc4+ Kh7 17.Qd3+ Kg8 18.Qc4+
1:01	1/10	0.00	5713078		13.Ne5+ Kg8 14.Nd7 Bxd7 15.Rxd7
					h6 16.Qxc4+ Kh7 17.Qd3+ Kg8 18.Qc4+
2:24	1/10	1.50	13047909	13.Ng5+ Kg6 14.Nd2 Nc6 15.Ndf3
					Bg4 16.Qc2+ Kh5 17.Ne4 Kg6 18.Nd6+
					Kh5 19.h3 Bxh3 20.gxh3 g6 21.Qxc4
5:50	2/11	1.78	31359331	13.Ng5+ Kg6 14.Nd2 h6 15.Nxc4 Qc7
					16.Ne5+ Qxe5 17.Qxe5 hxg5 18.Bxg5
					Rh5 19.Qc7 Nbd7 20.Bxf6 Nxf6

jm



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