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Subject: Re: ...Bxh2, a book move?

Author: Robert Hyatt

Date: 19:18:47 02/06/03

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On February 06, 2003 at 17:59:11, GuyHaworth wrote:

>
>Due to a late-running dinner, I linked up with the chess.fm/ICGA broadcasts of
>Game 5 just as 10...Bxh2+ was being played.
>
>Shipov (worldchessrating) says that Junior played this quickly:  timings would
>be interesting - doesn't sound like the regulation 3 minutes.
>
>After 11.Kxh2, I noted chess.fm saying that DJ was now out of book.
>
>

I was in class for the start of the game, but I had a crontab to kick off
Crafty at 2:30 and have it observe the game.  According to its log file,
Bxh2 took about 3 minutes.  Of course, that could be a delay in getting the
move from the playing site to ICC, or lag on ICC, who knows...

But it was almost exactly three minutes...

               11->  54.65   0.00   10. ... Nbd7 11. Ng3 Nb6 12. b3 Qc7
                                    13. a4 Bg4 14. h3 Be6 15. a5 Nbd7 <HT>
                                    (s=3)
               12     1:07   0.04   10. ... Nbd7 11. Ng3 Nb6 12. h3 Qe7
                                    13. Qe2 Bd7 14. Nf5 Bxf5 15. Bxf5 g6
                                    16. Bd3 Rad8 (s=2)
               12->   3:00   0.04   10. ... Nbd7 11. Ng3 Nb6 12. h3 Qe7
                                    13. Qe2 Bd7 14. Nf5 Bxf5 15. Bxf5 g6
                                    16. Bd3 Rad8 (s=5)
Black(9): timeleft 6420;6291
time remaining:   1:02 (crafty).
time remaining:   1:04 (opponent).
Black(10): Bxh2+

Crafty was apparently already out of book, so you can see how long it
"thought" before the Bxh2 move was played according to the chess server.






>Are these two pointers to the fact that 10...Bxh2+ was a book move?
>
>If so, although one cannot assume that all moves left in book are ok for the
>engine, I think the DJ team do a thorough job.  Is it therefore reasonably to
>conclude that it had already been thoroughly analysed and found to be good for
>DEEP JUNIOR?
>
>Is it in any other opening books - part of opening theory - or is it a Boris
>special TN?
>
>
>Presumably, the jury is still out on 16.g3?  Are the lines being collected
>together anywhere?  I'm getting the impression that White might have been up no
>more than a pawn in computer-scoring terms but that it was v much a 'computer'
>type of position afterwards.
>
>g



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