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Subject: Re: tough stuff

Author: John Merlino

Date: 13:09:39 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.
>
>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
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
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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