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Subject: Re: Nolot #9 4. ..Nxd3!?

Author: Dann Corbit

Date: 23:15:21 01/25/01

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On January 25, 2001 at 23:19:18, Eelco de Groot wrote:

>
>Thanks, Howard! Well the computer was doing almost all of the work. Maybe 4.
>..Nc5xd3 is interesting for analysis more than I thought, but I would have to
>look further down the line the computer gives too I suspect...
>
>[Event ""]
>[Site ""]
>[Date ""]
>[Round ""]
>[White ""]
>[Black ""]
>[Result ""]
>[FEN "r4r1k/4bppb/2n1p2p/p1n1P3/1p1p1BNP/3P1NP1/qP2QPB1/2RR2K1 w - - 0 1"]
>
>1.Ng5 hxg5 2.hxg5 Rfc8 3.Nf6 gxf6 4.gxf6 Nxd3  *
>
>[D]r1r4k/4bp1b/2n1pP2/p3P3/1p1p1B2/3n2P1/qP2QPB1/2RR2K1 w - -
>
>Last Move : 4... Nxd3 (White to play)
>
>00:00  02.01  -2.05  5.Rxd3 Bxd3 6.Qxd3 Qxb2 7.Bxc6
>00:00  03.00  -1.47  5.Rxd3 Bxd3 6.Qh5+ Kg8 7.Bxc6 Rxc6 8.Rxc6
>00:02  04.00  -1.73  5.Rxd3 Bxd3 6.Qh5+ Kg8 7.Bxc6 Bg6 8.Qh6
>00:06  05.00  -1.86  5.Rxd3 Bxd3 6.Qxd3 Qxb2 7.Bxc6 Qxc1+ 8.Bxc1 Rxc6 9.Bh6
>00:19  06.00  -2.08  5.Rxd3 Bxd3 6.Qxd3 Qxb2 7.Qd1 a4 8.Qh5 Kg8 9.Qg5+
>01:07  07.00  -0.96  5.Rxd3 Bxd3 6.Qxd3 Nxe5 7.Rxc8+ Rxc8 8.Bxe5 Rc1+ 9.Kh2 Bc5
>10.Bxd4 Bxd4
>01:56  08.00  -1.15  5.Rxd3 Bxd3 6.Qxd3 Nxe5 7.Rxc8+ Rxc8 8.Bxe5 Rc1+ 9.Kh2 Bc5
>10.Qe2 Qb1
>02:37  09.00  -1.36  5.Rxd3 Bxd3 6.Qxd3 Nxe5 7.Rxc8+ Rxc8 8.Bxe5 Bf8 9.Qd1 Bh6
>07:10  10.00  -1.09  5.Rxd3 Bxd3 6.Qxd3 Nxe5 7.Rxc8 Rxc8+ 8.Bxe5 Bf8 9.Qd1 Bh6
>14:12  11.00  -0.74  5.Rxd3 Bxd3 6.Qxd3 Nxe5 7.Qxd4 Rxc1+ 8.Bxc1 Bxf6 9.Qf4 Kg8
>10.Bxa8 Qb3
>14:12  12.00  -0.64  5.Rxd3 Bxd3 6.Qxd3 Nxe5 7.Rxc8+ Rxc8 8.Bxe5 Bf8 9.Qd1 Bh6
>27:46  13.00  -0.69  5.Rxd3 Bxd3 6.Qxd3 Nxe5 7.Rxc8+ Rxc8 8.Bxe5 Qa1+
>26:55  14.00  -0.56  5.Rxd3 Bxd3 6.Qxd3 Nxe5 7.Rxc8+ Rxc8 8.Bxe5 Qa1+
>
>A correction of what I posted, in that last piece of analysis White is still
>down 0.56 pawns of course so 4. ..Nxd3 might be an alternative for Black.
>Fourteenth ply result was just in. Another possibility is defending the Bishop
>and seventh row with 4. ..Rfe8, if on the second move Black places his other
>rook on the c-line, 2. ..Ra8-c8 instead of 2. ..Rf8-c8. That is a line Jeremiah
>Penery gave, I'm not sure where the original analysis came from, in his post
>about the Nolot-positions and DeepThought results too, maybe it is worth a
>re-repost:
>
>--------------------------------------------------------------------------------
>
>Position #9
>
>r4r1k/4bppb/2n1p2p/p1n1P3/1p1p1BNP/3P1NP1/qP2QPB1/2RR2K1 w - -
>
>   +---+---+---+---+---+---+---+---+
>8  | *R|   |   |   |   | *R|   | *K|
>   +---+---+---+---+---+---+---+---+
>7  |   |   |   |   | *B| *P| *P| *B|
>   +---+---+---+---+---+---+---+---+
>6  |   |   | *N|   | *P|   |   | *P|
>   +---+---+---+---+---+---+---+---+
>5  | *P|   | *N|   | P |   |   |   |
>   +---+---+---+---+---+---+---+---+
>4  |   | *P|   | *P|   | B | N | P |
>   +---+---+---+---+---+---+---+---+
>3  |   |   |   | P |   | N | P |   |
>   +---+---+---+---+---+---+---+---+
>2  | *Q| P |   |   | Q | P | B |   |
>   +---+---+---+---+---+---+---+---+
>1  |   |   | R | R |   |   | K |   |
>   +---+---+---+---+---+---+---+---+
>     a   b   c   d   e   f   g   h
>
>Weinstein - Elyoseph, Israel 1992
>
>1. Ng5!! hxg5 2. hxg5! Rac8 3. Nf6!! Nb8
>	3. ...gxf6 4. gxf6 Rfe8 5. Qh5 Rg8 6. Rxc5! Bg6! 7. Qh4 Bxc5
>	8. Be4 Ne7 9. Kg2 Qd5 10. Bxd5 +-
>4. Qh5 Bxf6 5. gxf6 gxf6 6. Rxc5 Rxc5 7. Be4 f5 8. Kg2 Rg8 9. Rh1 Rg7
>10. Bh6 Nd7 11. Bxg7+ Kxg7 12. Qxh7+
>
>After 9 minutes, it played 1. Nf6, expecting 1. ...Rfc8 2. Nxh7 Kxh7 3. Ra1.
>The score was slightly nagative for white.  On longer searches, it went up
>to half a pawn and creeping up.
>
>--------------------------------------------------------------------------------
>
>The line with 3. ..gxf6 only ends with +- so it is not an outright win for White
>not even in this side-line. But Howard it seems your gut feelings were not so
>far off!
>
>Elyoseph by the way I think could be a Fide-master from Israel, Yahoo turned up
>this reference in the Fide Elo-list:
>
>2800381  Elyoseph, Harel.................  f  ISR  2310    0  i
>
>No Mr. Weinstein in the Fide list, maybe it was Kasparov travelling in disguise
>under his old name, Harry Weinstein!

2007908  Weinstein, Boaz.................     USA  2180    0
2000466  Weinstein, Norman...............  m  USA  2450    0  i

1958
WEINSTEIN; Raymond Weinstein wins US Jr ch, in Homestead, Florida.

And (of course) your reference is from this:

At age thirteen Garry Weinstein's name was changed Garry Kasparov, based on his
mother’s name Kasparova.



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