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Subject: Re: test position... avoid d7...

Author: John Merlino

Date: 08:47:22 08/17/04

Go up one level in this thread


On August 17, 2004 at 01:39:10, Dan Ellwein wrote:

>On August 16, 2004 at 23:25:18, Albert Silver wrote:
>
>>On August 16, 2004 at 21:56:55, Dan Ellwein wrote:
>>
>>>[Event ""]
>>>[Site ""]
>>>[Date "8-16-2004"]
>>>[Round ""]
>>>[White "Chessmaster"]
>>>[Black "offset.95.5d"]
>>>[Result "0-1"]
>>>[30 min/game]
>>>
>>>P3/850
>>>
>>>  1. e4             c5
>>>  2. Nf3            e6
>>>  3. d4             cxd4
>>>  4. Nxd4           Nf6
>>>  5. Nc3            Bb4
>>>  6. Bd3            d6
>>>  7. O-O            O-O
>>>  8. Bd2            e5
>>>  9. Nf3            Bg4
>>> 10. a3             Bc5
>>> 11. Bg5            Nbd7
>>> 12. h3             Be6
>>> 13. Re1            h6
>>> 14. Bh4            Rc8
>>> 15. Qd2            Qc7
>>> 16. Na4            Nh5
>>> 17. Rad1           Qc6
>>> 18. Nc3            Ndf6
>>> 19. Bf1            a6
>>> 20. Nd5            Bxd5
>>> 21. exd5           Qa4
>>> 22. c4             Rfe8
>>> 23. b4             Ba7
>>> 24. c5             e4
>>> 25. Nh2            dxc5
>>> 26. d6             e3
>>> 27. fxe3           cxb4
>>>
>>>[D]2r1r1k1/bp3pp1/p2P1n1p/7n/qp5B/P3P2P/3Q2PN/3RRBK1 w - - 0 28
>>>
>>> 28. d7?
>>
>>What's the correct move?
>>
>>                  Albert
>
>Albert,
>
>looks like Ng4 puts up better resistance...
>
>analysis by offset.a15
>
>Time	Depth	Score	Positions	Moves
>----	----	----	----		----
>0:00	1/3	0.22	1333		28.d7 Nxd7 29.Qxd7 Bxe3+ 30.Rxe3
>					Qxd7 31.Rxd7 Rxe3 32.axb4
>0:00	1/3	0.55	4191		28.Ng4 Nxg4 29.d7 Bxe3+ 30.Rxe3
>0:00	1/4	-0.50	11345		28.Ng4 Nxg4 29.hxg4 Rxe3 30.Kh2
>0:00	1/4	0.22	12971		28.d7 Nxd7 29.Qxd7 Bxe3+ 30.Rxe3
>					Qxd7 31.Rxd7 Rxe3 32.axb4
>0:00	1/5	0.22	26476		28.d7 Nxd7 29.Qxd7 Bxe3+ 30.Rxe3
>					Qxd7 31.Rxd7 Rxe3 32.axb4
>0:01	1/6	0.43	110345		28.d7 Nxd7 29.Qxd7 Bxe3+ 30.Kh1
>					Qxd7 31.Rxd7 bxa3 32.Rxb7 g5
>0:02	1/7	0.64	193481		28.d7 Nxd7 29.Qxd7 Qxd7 30.Rxd7
>					Rxe3 31.Kh1 bxa3 32.Rxb7 a2 33.Rxe3
>					Bxe3
>0:05	1/8	0.14	471324		28.d7 Nxd7 29.Qxd7 Rxe3 30.Qxa4
>					Rxa3+ 31.Kh1 Rxa4 32.Rd7 b3 33.Ng4
>0:12	1/8	0.18	1122362		28.Qxb4 Bxe3+ 29.Kh1 Qd7 30.Ng4
>					Re4 31.Qb1 Rce8 32.Rxe3 Rxe3 33.Nxe3
>					Rxe3
>0:30	1/9	0.03	2914802		28.Qxb4 Bxe3+ 29.Kh1 Qd7 30.Bd3
>					Rc6 31.Ng4 Nd5 32.Bh7+ Kxh7 33.Qb1+
>					f5 34.Rxd5
>0:48	1/9	0.06	4607799		28.Ng4 Nxg4 29.hxg4 Rxe3 30.Kh2
>					Nf6 31.Bxf6 gxf6 32.Qxb4 Qxa3 33.Qxb7
>
>1:59	1/10	0.12	11164519	28.Ng4 Nxg4 29.hxg4 Rxe3 30.Kh2
>					Nf6 31.Bxf6 gxf6 32.Qxb4 Qd7 33.Bd3
>					Qe6 34.Rxe3 Bxe3 35.Qxb7 Qxd6+
>					36.g3
>2:36	1/10	0.22	15318461	28.Qxb4 Bxe3+ 29.Kh1 Qc6 30.Qb3
>					Bc5 31.Bc4 Qd7 32.Rxe8+ Rxe8 33.Nf3
>					Ne4
>5:07	1/11	-0.06	30118878	28.Qxb4 Bxe3+ 29.Rxe3 Qxd1 30.Rd3
>					Qc1 31.d7 Nxd7 32.Rxd7 Rc7 33.Rxc7
>					Qxc7 34.Nf3 Nf4 35.Bf2 Ne2+ 36.Kh1
>7:13	1/11	0.05	42685533	28.Ng4 Nxg4 29.hxg4 Rxe3 30.Kh2
>					Nf6 31.Bxf6 gxf6 32.d7 Rd8 33.Rxe3
>					Bxe3 34.Qxe3 Qxd1 35.Qe8+ Kg7 36.Qxd8
>					bxa3
>8:25	1/11	0.15	49247573	28.d7 Nxd7 29.Qxd7 Qxd7 30.Rxd7
>					Rxe3 31.Rxb7 Rxe1+ 32.Rxa7 Re4
>					33.Bf2 bxa3 34.Rxa6 Rc3 35.Ra8+
>					Kh7 36.Nf3
>11:52	1/12	0.13	69233170	28.d7 Nxd7 29.Qxd7 Qxd7 30.Rxd7
>					Rxe3 31.Rxb7 Rxe1+ 32.Rxa7 Re4
>					33.Nf3 bxa3 34.Rxa6 Rc3 35.Ra8+
>					Kh7 36.Ra7
>18:27	1/12	0.24	109228205	28.Ng4 Nxg4 29.hxg4 Rxe3 30.Kh2
>					bxa3 31.d7 Rd8 32.Rxe3 Bxe3 33.Qxe3
>					Qxd1 34.Bxd8 Qxd7 35.Qxa3 Qxd8
>					36.gxh5
>Dan

It is possible that Ng4 leads to a draw. This is the best line I could come up
with, but I'm sure somebody could improve for either side:

28.Ng4 Nxg4 29.hxg4 Rxe3 30.Kh2 bxa3 31.d7 Rd8 32.Rxe3 Bxe3 33.Qxe3 Qxd1
34.Qe8+ Kh7 35.Qxd8 a2

Also notice that it took Offset over 18 minutes to see a just a very small
difference between Ng4 and d7.

jm



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