Author: Albert Silver
Date: 09:09:56 01/07/06
Go up one level in this thread
On January 07, 2006 at 11:49:43, John Merlino wrote:
>On January 07, 2006 at 11:16:04, Albert Silver wrote:
>
>>In some testing against Toga in 20 min. games, Rybka played a strong maneuver,
>>and temporary pawn sac that preliminary analysis suggests may have been the
>>winning one.
>>
>>The following position arose after Toga's 36th move:
>>
>>[D]8/1r3q2/2p1p1k1/p1PpBppp/P1nP4/2P2PP1/4R1KP/4Q3 w - - 0 37
>>
>>Here Rybka played 37.h4! gxh4 (37...g4 will need to be better investigated)
>>38.Kh3!! hxg3 39.Qxg3+ Kh7 40.Bf4 Qf6 (I couldn't find any real improvement over
>>this BTW) 41.Qh4 Qxh4+ 42.Kxh4 Re7
>>
>>[D]8/4r2k/2p1p3/p1Pp1p1p/P1nP1B1K/2P2P2/4R3/8 w - - 0 43
>>
>>and now Rybka not only recovers the pawn, but the rook penetration is decisive.
>>
>>43. Kxh5 Kg7 44. Rg2+ Kf7 45. Rg6 Nb2 46. Rh6 Nxa4 47. Bd6 Ke8 48. Rh8+ Kd7 49.
>>Kg6 Nxc3 50. Kf6 Re8 51. Rh7+ Kd8 52. Rb7 Kc8 53. Rc7+ Kd8 54. Rxc6 Rh8 55. Kxe6
>> etc. and 1-0
>>
>>
>>1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5 7. O-O Nc6 8. a3
>>Bxc3 9. bxc3 Ne4 {[%eval 23,13] [%emt 0:00:38]}
>
>This move, 9...Ne4, is a novelty, correct? It didn't come from the book, and
>this position occurs many hundreds of times in a standard database. It seems
>strange that the book would end here when there was still a lot of theory left
>in the line.
>
>For example, the CM9000 database has about 700 games that reach this position,
>and five different moves are played from here, none of them being 9...Ne4.
>9...dxc4 and 9...Qc7 are the most popular moves.
>
>jm
The Noomen Select positions are like the Nunn2 set, except that they are
different. The point is to set up a standard opening position, and let the
engines play it from there.
Albert
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