Author: Tom Likens
Date: 06:43:20 05/12/04
Go up one level in this thread
On May 12, 2004 at 02:37:56, Will Singleton wrote:
>[d]rn2k1r1/p4ppp/1pp1p3/8/P1NP2Q1/2B3P1/1P6/R3KB1q w Qq - 0 16
>
>This is Amateur-Djinn, from ICC today.
>
>16. O-O-O! Nd7 (16... Qd5 17. Bb4 h5 18. Qh4 +-) 17. d5! cxd5 18. Bh3 Qxd1+ 19.
>Qxd1! dxc4 20. Qd6 {game over}
>
>Djinn didn't play 18...Qxd1 in the game, but then we wouldn't have the
>opportunity to look at 19.Qxd1. And if 16.O-O-O is too hard, then try 17.d5 and
>19.Qxd1.
Morning Will,
I was only able to give this a cursory glance this morning before heading out to
work,
but what little I did look at was interesting. Djinn had no inkling of either
16 O-O-O
(which seems a natural move to me) or 17 d5. I'm especially impressed by
Amateur's correct evaluation of d5, opening up lines to the black king. These
are
the kinds of moves that programs (materialistic as they are) have trouble
seeing.
After 17... cxd5, Djinn blithely (and incorrectly) thinks it is winning.
>Here's the position from 17.d5, Amateur, on a p4 2.8ghz:
>
>[d]r3k1r1/p2n1ppp/1pp1p3/8/P1NP2Q1/2B3P1/1P6/2KR1B1q w q - 0 17
>
>12 111 5543 19661523 d5 cxd5 Bh3 Qh2 Nd6 Ke7
>13 109 7269 25641213 d5 cxd5 Bh3 Qh2 Nd6 Ke7 Nxf7 Nc5 Bb4 Re8 Ng5 Kd7 Rxd5 Kc6
>Nf3 Qh1 Rd1
>14 200 19349 67027183 d5 cxd5 Bh3 Qxd1 Qxd1 dxc4 Qd6 Rd8
>
>Note: the move 19.Qxd1 (not Kxd1) is critical in the above line.
From the log it looks like Djinn switched back and forth between 18 ... Qxd1+
and
18 .... Qh2, selecting the latter by a hair's breath. When I forced 18 ...
Qxd1+ it sees
the correct white reply 19 Qxd1!
All-in-all an interesting game. I'll probably have a closer look tonight when I
get
home from work.
regards,
--tom
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