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Subject: Re: Ng5

Author: Roy Eassa

Date: 16:44:19 08/29/01

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On August 29, 2001 at 19:25:02, Roy Eassa wrote:

>On August 29, 2001 at 18:45:30, Roy Eassa wrote:
>
>>On August 29, 2001 at 18:29:58, Roy Eassa wrote:
>>
>>>On August 29, 2001 at 16:25:21, Dann Corbit wrote:
>>>
>>>>[D]r4r1k/4bppb/2n1p2p/p1n1P3/1p1p1BNP/3P1NP1/qP2QPB1/2RR2K1 w - - bm Ng5; c0
>>>>"Weinstein-Elyoseph, Israel, 1992"; id "Nolot.9, src=?";
>>>
>>>
>>>OK, Ng5 is the solution.  Could somebody please supply a bit of analysis to back
>>>it up?
>>
>>
>>Gambit Tiger 2.0 on 1.2 GHz Athlon, analysis mode, with me making and taking
>>back various moves and looking at the evaluations (my annotations):
>>
>>Date: 29/8/2001
>>White: Roy Eassa
>>Black: Gambit Tiger 2.0
>>
>>1. Ng5
>>
>>(1. Rxc5? Bxc5 2. Rc1 a4! 3. Rxc5 a3 4. Bc1 Rac8 is good for black.)
>>
>>1... hxg5 2. Bxg5 Na4 3. Nf6! Bg6 4. Bxc6 Nc3 5. Qf3 Nxd1 6. Bxa8 Nxf2 7. Kxf2
>>Qxb2+ 8. Kg1 gxf6 9. exf6 Bd6 10. Be4 is winning for white.
>>
>>Anybody else?
>
>
>With help from Fritz 6 (instead of Tiger):
>
>1.Ng5
>
>[1.Rxc5? Bxc5 2.Rc1 a4! 3.Rxc5 a3 4.Bc1 Rac8 5.Ng5 hxg5 6.Bxc6 Qb1 7.bxa3 bxa3
>8.Kh2 a2 9.Bb2 gxh4-+]
>
>1...hxg5 2.Bxg5 Rac8 3.Bxc6 Bxd3 4.Qf3! Bxg5 5.hxg5 Qxb2 6.Rxc5 Bh7 7.Kg2 Kg8
>8.Nh6+! gxh6 9.gxh6+-


Same, but updated with new variations, including black not capturing on g5:

1.Ng5

[1.Rxc5 Bxc5 2.Rc1 a4! 3.Rxc5 a3 4.Bc1 Rac8 5.Ng5 hxg5 6.Bxc6 Qb1 7.bxa3 bxa3
8.Kh2 a2 9.Bb2 gxh4-+]

1...hxg5

[1...Bf5 2.Ne4 Bxe4 3.Bxe4 Rac8 4.Nxh6 Nxe4 5.Qxe4 Qa4 (5...Qb3 6.Ng4 Rfd8
unclear) 6.Ng4 unclear]

2.Bxg5 Rac8 3.Bxc6 Bxg5

[3...Rxc6 4.Bxe7 Rfc8 5.Nh6! Bg6 6.h5 Bxd3 7.Qg4±;
3...Bxd3 4.Qf3! Bxg5 5.hxg5 Qxb2 6.Rxc5± Bh7 7.Kg2 Kg8 8.Nh6+! gxh6 9.gxh6+-]

4.Rxc5 Be7 5.Rcc1 Qb3 black has small advantage



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