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Subject: Re: Another GM sac refuted by computers?? addenum...

Author: Dadi Jonsson

Date: 16:49:16 07/31/04

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On July 31, 2004 at 19:37:05, Dan Ellwein wrote:

>Time	Depth	Score	Positions	Moves
>----	----	----	----		----
>0:00	1/3	0.62	4233		1.Bxf5 gxf5 2.a3 Kg6 3.Ne5+ Nxe5
>					4.Rxe5
>0:00	1/3	0.87	4472		1.Ne5 Nd5 2.Qg3
>0:00	1/4	1.03	7030		1.Ne5 Bd6 2.Bxf5 Bxe5 3.Rxe5 Nxe5
>					4.Qxe5+ Qf6
>0:00	1/5	1.03	36259		1.Ne5 Bd6 2.Bxf5 Bxe5 3.Rxe5 Nxe5
>					4.Qxe5+ Qf6
>0:01	1/6	1.01	83288		1.Ne5 Bd6 2.Bxf5 Bxe5 3.Rxe5 Qd1+
>					4.Kh2 Rc8
>0:03	1/7	1.12	246877		1.Ne5 Bd6 2.Bxf5 Nxe5 3.Rxe5 Qf6
>					4.Bb2 Bxe5 5.Bxe5
>0:12	1/8	0.54	850864		1.Ne5 Bd6 2.Nxc4 Bxf4 3.e7 Qd5
>					4.Bb2+ Kf7 5.Bxh8 Ra8
>0:35	1/8	1.02	2528177		1.Bxf5 gxf5 2.a3 Nc6 3.Qxf5 Qf8
>					4.Qd3 Bf6 5.Ra2 Qd6 6.Qxd6 Nxd6
>0:41	1/8	1.07	2975854		1.Nd2 Nd5 2.Qg3 h4 3.Qb3 Ncb6 4.Bb2+
>					Bf6 5.e7 Qd7 6.Bxf6+ Nxf6
>1:03	1/9	1.03	4573621		1.Nd2 Bf6 2.Nxc4 bxc4 3.e7 Qe8
>					4.a3 Bd4 5.axb4 Rxa1 6.bxc5
>1:36	1/9	1.35	7118484		1.Bxf5 gxf5 2.a3 Nc6 3.Qxf5 Qe8
>					4.Qd5 Rf8 5.Bg5 Nb6 6.Qd2 Kg8
>3:09	1/10	1.36	14588619	1.Bxf5 gxf5 2.a3 Nc6 3.Qxf5 Qe8
>					4.Qd5 Rf8 5.Rb1 Kg8 6.Bh6 Rf6
>8:35	1/11	1.41	41603327	1.Bxf5 gxf5 2.Qg3+ Kh7 3.Ng5+ Bxg5
>					4.Bxg5 Qb8 5.Bf4 Qg8 6.Qh4 Qe8
>					7.Qg5 Nd3 8.Qxf5+ Qg6 9.Qxg6+ Kxg6
>24:11	1/12	1.86	116174824	1.Bxf5 gxf5 2.Qg3+ Kh7 3.Bg5 Rg8
>					4.Rad1 Qe8 5.Rd7 Rg7 6.Qc7 Na6
>					7.Qf4 Rxa2 8.Bxe7 Rxe7 9.Qxf5+
>					Kh8 10.Rxe7 Qxe7 11.Qxh5+ Kg8
>1:32:47	1/13	2.04	465200075	1.Bxf5 gxf5 2.Qxf5 Qf8 3.Qe4 Qe8
>					4.Bf4 Rf8 5.Bg5 Nc6 6.a4 Nd6 7.Qe3
>					Rf5 8.Qc3+ Kg8 9.axb5 Rxb5
>4:12:43	2/14	2.36	1240838800	1.Bxf5 gxf5 2.Qg3+ Kh7 3.Bg5 Rg8
>					4.Rad1 Qe8 5.Rd7 Rg7 6.Qf4 Nc6
>					7.Qxf5+ Qg6 8.Qxg6+ Kxg6 9.Bxe7
>					Nxe7 10.Ne5+ Nxe5 11.Rxe5
>Dan


1.Bxf5 gxf5 2.Qg3+ Kh7 3.Bg5 as in the analysis above instead of (3.Ng5 as has
been suggested earlier) seems to be promising. It is probably worth while to
have an engine analyze the position after 3. Bg5. Maybe 3. Ng5 is not forced as
has been indicated in earlier messages in this thread.

[d]3q3r/4b2k/4P3/rpp2pBp/1nn5/5NQP/P4PP1/R3R1K1 b - -

Position after 3. Bg5



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