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Subject: Re: Challenge for everyone of you.Specially John Merlino.

Author: John Merlino

Date: 11:39:03 08/14/02

Go up one level in this thread


On August 14, 2002 at 10:22:18, Mustafa wrote:

>take a look at this position can CM 9000 find the move Nxe4!! the game was
>played between Junior 7 and Nxe4!! was made now can any other program make this
>move and junior 7 was using my own settings with some changes in the paramettre.
>
>[D]r1bq1rk1/p1bnn1pp/2p5/2P2pP1/3pp3/Q1N4P/PP1BPPB1/2KR2NR w - - 0 15
>
>Nxe4 was made by junior 7 which resulted a win for junior.

Chessmaster 9000, on my humble PIII-600, does not see the move in under five
minutes:

Time	Depth	Score	Positions	Moves
0:00	1/3	-0.99	989		15.Nb1 a5 16.Qb3+ Nd5
0:00	1/4	-0.93	3603		15.Nb1 a5 16.e3 Ne5 17.Qb3+ Kh8
0:00	1/5	-1.31	10418		15.Nb1 Nd5 16.h4 Qe7 17.b4 a5
0:00	1/6	-1.27	28323		15.Nb1 Nd5 16.h4 Qe7 17.b4 a5 18.e3
0:01	1/7	-1.46	73898		15.Nb1 Nd5 16.h4 Qe7 17.b4 a5 18.e3
					Bb7
0:03	1/8	-1.46	172763		15.Nb1 Nd5 16.h4 Qe7 17.b4 a5 18.e3
					Bb7
0:09	1/9	-1.57	537204		15.Nb1 Nd5 16.Qa4 Qe7 17.Qxd4 Be5
					18.Qc4 Qxc5 19.Qxc5 Nxc5 20.Nc3
					Bb7 21.Nxd5 cxd5
0:27	1/10	-1.57	1654378		15.Nb1 Nd5 16.Qa4 Qe7 17.Qxd4 Be5
					18.Qc4 Qxc5 19.Qxc5 Nxc5 20.Nc3
					Bb7 21.Nxd5 cxd5
1:04	2/11	-1.69	3957291		15.Nb1 Nd5 16.Qa4 Qe7 17.Qxd4 Be5
					18.Qc4 Qxc5 19.Qxc5 Nxc5 20.Nc3
					Rb8 21.h4 Be6 22.Nxd5 cxd5
2:22	2/11	-1.64	8680811		15.Na4 Rb8 16.h4 Nd5 17.b3 Qe7
					18.e3 d3 19.Kb1 Bb7 20.Nh3 Rbe8
5:01	3/12	-1.49	18388245	15.Na4 Rb8 16.h4 Nd5 17.b3 Qe7
					18.Kb1 Rb5 19.e3 d3 20.Rc1 Re8
					21.f4 exf3ep 22.Bxf3

After forcing Nxe4 fxe4 Bxe4, here is what CM9000 says:

Time	Depth	Score	Positions	Moves
0:00	1/3	-2.26	1754		16...Rxf2 17.Nf3 Rxe2 18.Rhe1
0:00	1/4	-2.02	5681		16...Rxf2 17.Nf3 Ne5 18.Be3
0:00	1/5	-2.02	16566		16...Rxf2 17.Nf3 Ne5 18.Be3 Nc4
0:01	1/6	-1.45	52299		16...Rxf2 17.Nf3 Rxe2 18.Bd3 Rf2
					19.Bc4+ Nd5 20.Nxd4
0:01	1/6	-1.72	74589		16...Nd5 17.Qd3 Kh8 18.Qxd4 Be5
					19.Qa4 Nxc5
0:03	1/7	-1.87	200968		16...Nd5 17.Qd3 Qe7 18.b4 a5 19.Bxh7+
					Kh8 20.Nf3 axb4
0:08	1/8	-1.86	469598		16...Nd5 17.Qd3 Qe7 18.Nf3 Nxc5
					19.Bxh7+ Kh8 20.Qc2 Bd7 21.Bg6
					Qxe2 22.Nxd4
0:22	1/9	-1.86	1398196		16...Nd5 17.Qd3 Qe7 18.Nf3 Nxc5
					19.Bxh7+ Kh8 20.Qc2 Bd7 21.Bg6
					Qxe2 22.Nxd4
0:57	1/10	-1.86	3556990		16...Nd5 17.Qd3 Qe7 18.Nf3 Nxc5
					19.Bxh7+ Kh8 20.Qc2 Bd7 21.Bg6
					Qxe2 22.Nxd4
2:46	2/11	-1.90	10654857	16...Nd5 17.Qd3 Qe7 18.Nf3 Rb8
					19.Bxh7+ Kh8 20.Nxd4 Qxc5+ 21.Kb1
					Ne5 22.Qe4 Rxf2 23.Bf5 Bxf5 24.Nxf5
4:15	2/11	-2.00	16424662	16...Rxf2 17.Nf3 Rxe2 18.Rhe1 Rxe1
					19.Bxe1 Nd5 20.Rxd4 Qe7 21.Rc4 Ne5
8:43	3/12	-2.05	34407631	16...Rxf2 17.Nf3 Rxe2 18.Rde1 Rxe1+
					19.Rxe1 Ne5 20.Nxe5 Bxe5 21.Bxh7+
					Kxh7 22.Rxe5 Bf5 23.Qf3 g6 24.Qb3

So the difference is more than 0.5 pawns.

jm



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