Author: Will Singleton
Date: 14:21:00 05/12/04
Go up one level in this thread
On May 12, 2004 at 16:09:39, John Merlino wrote:
>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.
>>
>>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.
>
>Here's what CM_SKR says on an AMD 2500+ for each of the three positions you ask
>about:
>
>16. The King is pretty happy with Qf4
Qf4 is an alternative, but doesn't lead to the kind of convincing scores seen
after castling first. (imvho)
>Time Depth Score Positions Moves
>0:00 1/3 0.85 1823 16.Qf4 f6 17.O-O-O Nd7
>0:00 1/4 1.15 4592 16.Qf4 f6 17.O-O-O Nd7 18.Be2
>0:00 1/5 1.12 18201 16.Qf4 f6 17.O-O-O Nd7 18.Re1 Kf7
>0:00 1/6 0.89 54606 16.Qf4 f6 17.Qg4 Ke7 18.Qf4 Rd8
> 19.O-O-O
>0:01 1/7 1.12 197245 16.Qf4 f6 17.Qc7 Nd7 18.O-O-O Rd8
> 19.Be2 Qh6+ 20.Bd2 Qh2
>0:03 1/8 0.97 711348 16.Qf4 Nd7 17.Nd6+ Ke7 18.Bb4 f6
> 19.Ne4+ Kd8 20.O-O-O g5
>0:07 1/8 1.09 1809117 16.a5 b5 17.Nd6+ Ke7 18.Ne4 Qh6
> 19.Bb4+ Kd8 20.Bd2 f5
>0:10 1/9 1.18 2596916 16.a5 b5 17.Nd6+ Ke7 18.Qf4 Na6
> 19.Ne4 Rgd8 20.O-O-O Kf8 21.Bxb5
> Qxd1+ 22.Kxd1 cxb5
>0:20 1/10 1.10 5361855 16.a5 b5 17.Nd6+ Ke7 18.Qf4 Na6
> 19.Ne4 Rgd8 20.O-O-O f5 21.Bd3 Qh5
>0:38 1/10 1.21 10621921 16.Qf4 f6 17.Qc7 Nd7 18.O-O-O Qd5
> 19.Re1 Rf8 20.Bh3 f5 21.b3 Ke7
>1:17 1/11 1.40 21411519 16.Qf4 Nd7 17.Bb4 f6 18.O-O-O c5
> 19.dxc5 Qh6 20.Qxh6 gxh6 21.c6
> Nc5 22.Nd6+ Ke7
>3:49 1/12 1.81 64823123 16.Qf4 f6 17.Qc7 Nd7 18.O-O-O Qd5
> 19.Ne5 Nxe5 20.dxe5 Qf3 21.Qd7+
> Kf8 22.Bc4 Qe3+ 23.Bd2 Qxe5 24.Bxe6
>
>17. The King never considers d5, and eventually decides upon Qe2 over Be2
Through backwards analysis, d5 appears to be the move. Does CM9000 support the
ability to do backwards analysis? I'm not sure.
>Time Depth Score Positions Moves
>0:00 1/3 0.70 2377 17.Qf4 Qh5 18.Bg2 Rc8
>0:00 1/4 0.04 6589 17.Qf4 Qh6 18.Qxh6 gxh6 19.Bg2 Rc8
>0:00 1/4 0.86 8762 17.Bd3 Nf6 18.Rxh1 Nxg4 19.Rxh7
>0:00 1/5 0.63 26279 17.Bd3 Qd5 18.Qf4 Nf6 19.Qc7 Kf8
>0:00 1/6 0.86 88813 17.Bd3 Nf6 18.Qxe6+ fxe6 19.Rxh1
> Rh8 20.Ne5 Rc8
>0:00 1/7 0.70 180997 17.Bd3 Qd5 18.Qf4 Nf6 19.Bb4 Rd8
> 20.Qc7 Nd7
>0:01 1/7 0.78 396603 17.Be2 Qd5 18.Qf4 Nf6 19.Bb4 Rd8
> 20.Qc7 Nd7 21.Qxa7
>0:02 1/8 0.83 642592 17.Be2 Qd5 18.Qf4 Nf6 19.Bb4 Rd8
> 20.Qc7 Qd7
>0:06 1/9 0.99 1756946 17.Be2 Qd5 18.Bb4 Kd8 19.Nd6 Kc7
> 20.Nxf7 Qf5 21.Bd6+ Kb7 22.Qf4
> Qxf4+ 23.Bxf4
>0:16 1/10 1.01 4301195 17.Be2 Qd5 18.Bb4 Nf6 19.Qf4 Rd8
> 20.Nd6+ Rxd6 21.Qxd6 Qxd6 22.Bxd6
> Kd7 23.Bf4 Nd5
>1:17 1/11 0.98 21299147 17.Be2 Qd5 18.Bb4 Nf6 19.Qf4 Qd7
> 20.Nd6+ Kf8 21.Nb5+ c5 22.dxc5
> Qc6 23.Kb1 bxc5
>2:38 1/11 1.26 44917545 17.Qe2 Rd8 18.Bg2 Qh6+ 19.Bd2 Qg6
> 20.Bxc6 Qxg3 21.Rf1 Rf8 22.Bf4
> Qb3 23.Nd6+ Ke7
>3:54 1/12 1.29 65222502 17.Qe2 Qd5 18.Bg2 Qg5+ 19.Kb1 O-O-O
> 20.Bxc6 Kc7 21.d5 Qxg3 22.Qe4 Nf6
> 23.Be5+ Kc8
>
>19. The King needs 1:36 to switch to Qxd1
>0:00 1/3 0.41 625 19.Kxd1 dxc4 20.Qxc4 Rd8 21.Qh4
>0:00 1/4 0.24 1939 19.Kxd1 dxc4 20.Qxc4 Rd8 21.Qc7
> Ne5+ 22.Bd2
>0:00 1/5 0.51 6532 19.Kxd1 dxc4 20.Qxc4 Rd8 21.Kc2
> Nc5 22.Bg2
>0:00 1/6 0.52 21655 19.Kxd1 dxc4 20.Qxc4 Rd8 21.Qc7
> a6 22.Kc2
>0:00 1/7 0.79 81295 19.Kxd1 dxc4 20.Qxc4 Rd8 21.Kc2
> Nc5 22.b4 Nd7 23.Qh4
>0:00 1/8 0.73 178629 19.Kxd1 dxc4 20.Qxc4 Rd8 21.Kc2
> Nc5 22.b4 Nd3 23.Qc7 Nf2
>0:02 1/9 1.01 727087 19.Kxd1 dxc4 20.Qxc4 Rd8 21.Kc2
> a5 22.Bg2 Ke7 23.b4 Rc8 24.Qf4 axb4
>0:04 1/10 0.97 1269742 19.Kxd1 dxc4 20.Qxc4 Rd8 21.Kc2
> a5 22.Bg2 Ke7 23.b4 Rc8 24.Bc6
>0:10 1/11 1.13 3059696 19.Kxd1 dxc4 20.Qxc4 Rd8 21.Kc2
> a5 22.Bg2 Ke7 23.b4 Rc8 24.Bc6
> Nc5 25.Qh4+ f6 26.Qxh7 axb4 27.Bxb4
>0:23 1/12 1.12 6992140 19.Kxd1 dxc4 20.Qxc4 Rd8 21.Kc2
> g5 22.Bxe6 fxe6 23.Qxe6+ Kf8 24.Qf5+
> Ke7 25.Bb4+ Nc5 26.Bxc5+ bxc5 27.Qxc5+
> Ke8 28.Qxa7 Rd7 29.Qe3+ Kf7 30.b4
>1:11 2/13 1.18 21693821 19.Kxd1 dxc4 20.Qxc4 Nc5 21.Bd4
> Rc8 22.b4 Rd8 23.bxc5 e5 24.Qb5+
> Kf8 25.cxb6 Rxd4+ 26.Kc2 axb6 27.Qxe5
>1:36 2/13 1.32 29051297 19.Qxd1 dxc4 20.Qd6 Rd8 21.Bb4
> Nc5 22.Qc6+ Ke7 23.Bxc5+ bxc5 24.Qxc5+
> Rd6 25.Qxa7+ Kf6 26.Qf2+ Ke7 27.Qc5
> Rd8 28.Bf1 f6 29.Bxc4
>2:52 3/14 1.61 51150154 19.Qxd1 dxc4 20.Qd6 Rd8 21.Bg2
> Nb8 22.Qc7 Nd7 23.Qxa7 h5 24.Qc7
> Ke7 25.Kc2 Ke8 26.Qxc4
>
>jm
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