Test Position: Bh6!!!

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Moderators: hgm, Rebel, chrisw

JVMerlino
Posts: 1357
Joined: Wed Mar 08, 2006 10:15 pm
Location: San Francisco, California

Re: Test Position: Bh6!!!

Post by JVMerlino »

CM9_R1 finds Bh6 in just under one minute on a P4-3.0:

Code: Select all

Time	Depth	Score	Positions	Moves
0:00	1/3	0.66	1946		1.gxh7+ Kxh7 2.h6 g6
0:00	1/4	0.59	5819		1.gxh7+ Kxh7 2.Qg2 Bf6 3.h6 g6
0:00	1/5	0.27	46412		1.gxh7+ Kxh7 2.Qg2 Bf6 3.h6 g6
					4.Na1 Kh8 5.Nd5 Bxd5 6.exd5
0:00	1/6	0.31	132130		1.gxh7+ Kxh7 2.Rg3 Rxc3 3.Qxc3
					Qxc3 4.bxc3 Rxc3 5.Bd2 Rc8 6.Rhg1
0:02	1/7	0.36	407543		1.gxh7+ Kxh7 2.Qg2 Bf6 3.Bg5 Qd8
					4.Bxf6 Qxf6 5.h6 g6
0:07	1/8	0.42	1230181		1.gxh7+ Kxh7 2.Rg3 Rxc3 3.Qxc3
					Qxc3 4.bxc3 Rxc3 5.h6 g6 6.Bd2
					Rc8 7.Kb1
0:36	1/9	0.26	6027420		1.gxh7+ Kxh7 2.Rh2 Rxc3 3.bxc3
					Qxc3 4.Qxc3 Rxc3 5.h6 g6 6.Kd2
					Rc8 7.c3
0:59	1/9	1.32	9827448		1.Bh6 hxg6 2.hxg6 Rxc3 3.gxf7+
					Kxf7 4.Rxg7+ Ke8 5.bxc3 Bf6 6.Rg6
					Qxc3 7.Qxc3 Rxc3
1:14	1/10	1.09	12156703	1.Bh6 hxg6 2.hxg6 Rxc3 3.gxf7+
					Kxf7 4.Rxg7+ Ke8 5.bxc3 Qxc3 6.Qxc3
					Rxc3 7.Bd2 Rxf3 8.Rhh7 Bf7
2:19	1/11	1.25	24443089	1.Bh6 hxg6 2.hxg6 Rxc3 3.gxf7+
					Kxf7 4.Rxg7+ Ke8 5.bxc3 Qxc3 6.Bg5
					Bxg5 7.Rxg5 Qxf3 8.Rh8+ Nf8 9.Qxd6
5:02	1/12	1.25	56500093	1.Bh6 hxg6 2.hxg6 Rxc3 3.gxf7+
					Kxf7 4.Rxg7+ Ke8 5.bxc3 Qxc3 6.Bg5
					Bxg5 7.Rxg5 Qxf3 8.Rh8+ Nf8 9.Qxd6
18:14	1/13	1.88	208069143	1.Bh6 hxg6 2.hxg6 Rxc3 3.bxc3 Qxc3
					4.gxf7+ Kxf7 5.Rxg7+ Ke8 6.Bg5
					Bxg5 7.Rxg5 Bxb3 8.Qxc3 Rxc3 9.axb3
					Rxf3 10.Rh8+ Kf7 11.Rh7+ Ke6
jm
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swami
Posts: 6640
Joined: Thu Mar 09, 2006 4:21 am

Re: Test Position: Bh6!!!

Post by swami »

JVMerlino wrote:CM9_R1 finds Bh6 in just under one minute on a P4-3.0:

Code: Select all

Time	Depth	Score	Positions	Moves
0:00	1/3	0.66	1946		1.gxh7+ Kxh7 2.h6 g6
0:00	1/4	0.59	5819		1.gxh7+ Kxh7 2.Qg2 Bf6 3.h6 g6
0:00	1/5	0.27	46412		1.gxh7+ Kxh7 2.Qg2 Bf6 3.h6 g6
					4.Na1 Kh8 5.Nd5 Bxd5 6.exd5
0:00	1/6	0.31	132130		1.gxh7+ Kxh7 2.Rg3 Rxc3 3.Qxc3
					Qxc3 4.bxc3 Rxc3 5.Bd2 Rc8 6.Rhg1
0:02	1/7	0.36	407543		1.gxh7+ Kxh7 2.Qg2 Bf6 3.Bg5 Qd8
					4.Bxf6 Qxf6 5.h6 g6
0:07	1/8	0.42	1230181		1.gxh7+ Kxh7 2.Rg3 Rxc3 3.Qxc3
					Qxc3 4.bxc3 Rxc3 5.h6 g6 6.Bd2
					Rc8 7.Kb1
0:36	1/9	0.26	6027420		1.gxh7+ Kxh7 2.Rh2 Rxc3 3.bxc3
					Qxc3 4.Qxc3 Rxc3 5.h6 g6 6.Kd2
					Rc8 7.c3
0:59	1/9	1.32	9827448		1.Bh6 hxg6 2.hxg6 Rxc3 3.gxf7+
					Kxf7 4.Rxg7+ Ke8 5.bxc3 Bf6 6.Rg6
					Qxc3 7.Qxc3 Rxc3
1:14	1/10	1.09	12156703	1.Bh6 hxg6 2.hxg6 Rxc3 3.gxf7+
					Kxf7 4.Rxg7+ Ke8 5.bxc3 Qxc3 6.Qxc3
					Rxc3 7.Bd2 Rxf3 8.Rhh7 Bf7
2:19	1/11	1.25	24443089	1.Bh6 hxg6 2.hxg6 Rxc3 3.gxf7+
					Kxf7 4.Rxg7+ Ke8 5.bxc3 Qxc3 6.Bg5
					Bxg5 7.Rxg5 Qxf3 8.Rh8+ Nf8 9.Qxd6
5:02	1/12	1.25	56500093	1.Bh6 hxg6 2.hxg6 Rxc3 3.gxf7+
					Kxf7 4.Rxg7+ Ke8 5.bxc3 Qxc3 6.Bg5
					Bxg5 7.Rxg5 Qxf3 8.Rh8+ Nf8 9.Qxd6
18:14	1/13	1.88	208069143	1.Bh6 hxg6 2.hxg6 Rxc3 3.bxc3 Qxc3
					4.gxf7+ Kxf7 5.Rxg7+ Ke8 6.Bg5
					Bxg5 7.Rxg5 Bxb3 8.Qxc3 Rxc3 9.axb3
					Rxf3 10.Rh8+ Kf7 11.Rh7+ Ke6
jm
Well it doesn't show Bf6 or Bf8 in the place of hxg6(which loses anyway), Bf6 might let white think for a while to find another strong move with significant eval.
Top
BBauer
Posts: 658
Joined: Wed Mar 08, 2006 8:58 pm

Re: Test Position: Bh6!!!

Post by BBauer »

Hi,
on a fast machine glaurung2.01 found Bf6 in 2:04 min. The score at depth 16 is +1.81
but doesn't go up.

Code: Select all

setboard 2r3k1/1pqnbppp/p2pb1P1/4p2P/2r1P3/1NN1BP2/PPPQ4/2K3RR w - - 0 18
post
analyze
15  +98   1408    63684513 gxh7+ Kxh7 Kb1 Nf6 Qg2 Rg8 Bg5 Kh8 Qg3 Rc6 h6 g6 Qh4 Qd8 h7 Re8
16  +66   2376   115006657 gxh7+ Kxh7 Kb1 Nf6 Qg2 Rg8 Bg5 Kh8 Qg3 Qd8 h6 g6 h7 Re8 Qh2 b6 Rd1
16  +78   2681   131792446 Kb1 Rxc3 gxh7+ Kxh7 bxc3 Qxc3 Qg2 Bf6 h6 g6 Qe2 Kh8 Rd1 Qb4 Qd3 Qa4 Qxd6 b5
16 +182  12402   666077219 Bh6 hxg6 hxg6 Rxc3 bxc3 Qxc3 gxf7+ Kxf7 Rxg7+ Ke8 Bg5 Bxg5 Rh8+ Nf8 Rxg5 Bxb3 
17 +172  13076   702123360 Bh6 hxg6 hxg6 Rxc3 bxc3 Qxc3 gxf7+ Kxf7 Rxg7+ Ke8 Bg5 Bxg5 Rxg5 Bxb3 Qxc3 Rxc3 
18 +143  15865   857153238 Bh6 hxg6 hxg6 Rxc3 bxc3 Qxc3 gxf7+ Kxf7 Rxg7+ Ke8 Bg5 Bxg5 Rxg5 Bxb3 Qxc3 Rxc3 
19 +174  22746  1239336427 Bh6 hxg6 hxg6 Rxc3 bxc3 Qxc3 gxf7+ Kxf7 Rxg7+ Ke8 Bg5 Bxg5 Rh8+ Nf8 Rxg5 Qxf3 
20 +172  32639  1794811101 Bh6 hxg6 hxg6 Rxc3 bxc3 Qxc3 gxf7+ Kxf7 Rxg7+ Ke8 Bg5 Bxg5 Rh8+ Nf8 Rxg5 Bxb3 
21 +176  63003  3515010316 Bh6 hxg6 hxg6 Rxc3 bxc3 Qxc3 gxf7+ Kxf7 Rxg7+ Ke8 Bg5 Bxg5 Rh8+ Nf8 Rxg5 Qxd2+ 
22 +170 121182  6823586091 Bh6 hxg6 hxg6 Rxc3 bxc3 Qxc3 gxf7+ Kxf7 Rxg7+ Ke8 Bg5 Bxg5 Rh8+ Nf8 Rxg5 Qxd2+ 
23 +170 281105 15656673802 Bh6 hxg6 hxg6 Rxc3 bxc3 Qxc3 gxf7+ Kxf7 Rxg7+ Ke8 Bg5 Bxg5 Rh8+ Nf8 Rxg5 Qxd2+ 
24 +152 597558 33322170480 Bh6 hxg6 hxg6 Rxc3 bxc3 Qxc3 gxf7+ Kxf7 Rxg7+ Ke8 Bg5 Bxg5 Rh8+ Nf8 Rxg5 Ke7
kind regards
Bernhard
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Guetti

Re: Test Position: Bh6!!!

Post by Guetti »

swami wrote:
Well it doesn't show Bf6 or Bf8 in the place of hxg6(which loses anyway), Bf6 might let white think for a while to find another strong move with significant eval.
No engines considers Bf6, because it loses immediately.
After 1. Bh6 Bf6

+11.43 16/1 00:01:24 575152 2. gxh7 Kf8 3. h8=Q Ke7 4. Qxc8 Qxc8 5. Bxg7 Rxc3 6. Qxc3 Qd8 7. h6 Bxg7 8. Rxg7

if 2. ... Kxh7

+mate 9 17/24 00:00:03 1111485 3. Bxg7 Bxg7 4. h6 Bf8 5. Qg2 f6 6. Qg6 Kh8 7. h7 Bh6 8. Rxh6 Bg4 9. Rxg4 Nc5 10. Qxf6

Best chance is 1. Bh6 hxg6 followed by Rxc3, Qxc3

-1.65 17/1 00:03:00 565368 1... hxg6 2. hxg6 Rxc3 3. bxc3 Qxc3 4. gxf7 Kxf7 5. Rxg7 Ke8 6. Bg5 Bf8 7. Rh8 Bf7 8. Rgh7 Qc4 9. Bh6 Bg8 10. Bxf8 Bxh7 11. Bxd6 Bg8 12. Qg2 Kf7

after 5. ... Ke8 ist seems that blacks King can escape due to the presence on the c-file

[D]2r1k3/1p1nb1R1/p2pb2B/4p3/4P3/1Nq2P2/P1PQ4/2K4R w - - 1 5[/D]
Top
Andrew
Posts: 231
Joined: Thu Mar 09, 2006 12:51 am
Location: Australia

Re: Test Position: Bh6!!!

Post by Andrew »

Andreas, looks like you're using Hiarcs 12 there :)

After 1 ... Bf8 (and this is on a creaky single cpu 1.9 GHz 512Mb hash
using H12 on defaults but learning off)

HIARCS 12 MP Copyright (c) 2008 Applied Computer Concepts Ltd. All rights reserved. www.hiarcs.com
Engine: HIARCS 12 MP [learn off sharpen off] (512 MB)
by Mark John Uniacke
8/32 0:01 0.00 2.gxh7+ Kxh7 3.Qg5 Rxc3 4.bxc3 Qxc3 5.Rh2 Bxb3 6.axb3 Qa1+ 7.Kd2 Qc3+ 8.Kc1 (179.247) 120
9/33 0:02 +0.25++ 2.gxh7+ (347.972) 131
9/35 0:03 +M12 2.gxh7+ (482.970) 140
9/35 0:03 +M10 2.gxh7+ Kxh7 3.Bxg7 Bxg7 4.h6 Kg8 5.hxg7 f6 6.Qg2 Kf7 7.g8Q+ Rxg8 8.Qxg8+ (523.591) 140
10/35 0:04 +M10 2.gxh7+ Kxh7 3.Bxg7 Bxg7 4.h6 Kg8 5.hxg7 f6 6.Qg2 Kf7 7.g8Q+ Rxg8 8.Qxg8+ Ke7 9.Rg7+ Bf7 10.Rxf7+ (609.300) 151
11/35 0:04 +M10 2.gxh7+ Kxh7 3.Bxg7 Bxg7 4.h6 Kg8 5.hxg7 f6 6.Qg2 Kf7 7.g8Q+ Rxg8 8.Qxg8+ Ke7 9.Rg7+ Bf7 10.Rxf7+ (798.286) 165
12/35 0:06 +M10 2.gxh7+ Kxh7 3.Bxg7 Bxg7 4.h6 Kg8 5.hxg7 f6 6.Qg2 Kf7 7.g8Q+ Rxg8 8.Qxg8+ Ke7 9.Rg7+ Bf7 10.Rxf7+ (1.115.683) 179
13/35 0:08 +M10 2.gxh7+ Kxh7 3.Bxg7 Bxg7 4.h6 Kg8 5.hxg7 f6 6.Qg2 Kf7 7.g8Q+ Rxg8 8.Qxg8+ Ke7 9.Rg7+ Bf7 10.Rxf7+ (1.766.552) 198
14/35 0:14 +M10 2.gxh7+ Kxh7 3.Bxg7 Bxg7 4.h6 Kg8 5.hxg7 f6 6.Qg2 Kf7 7.g8Q+ Rxg8 8.Qxg8+ Ke7 9.Rg7+ Bf7 10.Rxf7+ (3.200.792) 213
15/35 0:25 +M10 2.gxh7+ Kxh7 3.Bxg7 Bxg7 4.h6 Kg8 5.hxg7 f6 6.Qg2 Kf7 7.g8Q+ Rxg8 8.Qxg8+ Ke7 9.Rg7+ Bf7 10.Rxf7+ (5.744.244) 227
16/35 0:43 +M10 2.gxh7+ Kxh7 3.Bxg7 Bxg7 4.h6 Kg8 5.hxg7 f6 6.Qg2 Kf7 7.g8Q+ Rxg8 8.Qxg8+ Ke7 9.Rg7+ Bf7 10.Rxf7+ (10.329.127) 235
17/35 1:11 +M10 2.gxh7+ Kxh7 3.Bxg7 Bxg7 4.h6 Kg8 5.hxg7 f6 6.Qg2 Kf7 7.g8Q+ Rxg8 8.Qxg8+ Ke7 9.Rg7+ Bf7 10.Rxf7+ (16.941.478) 236
best move: g6xh7 time: 1:19.907 min n/s: 234.196 nodes: 18.571.485
Engine: Zappa Mexico II (512 MB)
by Anthony Cozzie
6/20 0:00 +0.07 2.Be3 Rxc3 3.bxc3 Qxc3 4.Qxc3 Rxc3 (22.855) 91
6/22 0:00 +0.07 2.Be3 Rxc3 3.bxc3 Qxc3 4.Qxc3 Rxc3 (52.084) 92
7/22 0:01 +0.02 2.Be3 h6 3.Kb1 Rxc3 4.bxc3 Qxc3 5.Qxc3 Rxc3 (97.615) 91
7/24 0:01 +0.18 2.Qg2 hxg6 3.Bd2 gxh5 4.Rxh5 Nf6 5.Rh2 d5 (161.353) 92
7/24 0:01 +0.18 2.Qg2 hxg6 3.Bd2 gxh5 4.Rxh5 Nf6 5.Rh2 (184.180) 93
8/28 0:03 +0.65 2.Qg2 hxg6 3.hxg6 Rxc3 4.gxf7+ Kxf7 5.Qg6+ Ke7 6.Bg5+ Nf6 7.Bxf6+ Kd7 8.Qxg7+ (318.262) 94
8/28 0:03 +0.65 2.Qg2 hxg6 3.hxg6 Rxc3 4.gxf7+ Kxf7 5.Qg6+ Ke7 6.Bg5+ Nf6 7.Bxf6+ Kd7 8.Qxg7+ (360.360) 95
9/32 0:05 0.00 2.Qg2 Rxc3 3.bxc3 Qxc3 4.gxf7+ Kxf7 5.Bxg7 Bxb3 6.axb3 (473.933) 92
9/32 0:07 +0.02 2.Be3 h6 3.gxf7+ Kxf7 4.Rg6 Rxc3 5.bxc3 Qxc3 6.Qxc3 Rxc3 (705.407) 94
9/32 0:08 +0.15 2.gxh7+ Kxh7 3.Be3 Rxc3 4.Qxc3 Qxc3 5.bxc3 Rxc3 (791.090) 94
9/32 0:10 +0.15 2.gxh7+ Kxh7 3.Be3 Rxc3 4.Qxc3 Qxc3 5.bxc3 Rxc3 (949.315) 94
10/32 0:12 -0.13 2.gxh7+ Kxh7 3.Be3 Rxc3 4.Qxc3 Qxc3 5.bxc3 Rxc3 6.Kd2 Rc8 7.c3 (1.247.452) 97
10/35 0:17 -0.09 2.gxf7+ Kxf7 3.Be3 b5 4.Kb1 Ke8 5.Rh2 Rxc3 6.bxc3 Qxc3 7.Qxc3 Rxc3 (1.709.038) 96
10/38 0:26 +0.11 2.Be3 Rxc3 3.Qxc3 Qxc3 4.bxc3 Rxc3 5.Kd2 Rc8 (2.537.924) 94
10/38 0:30 +0.11 2.Be3 Rxc3 3.Qxc3 Qxc3 4.bxc3 Rxc3 5.Kd2 Rc8 (2.900.996) 93
11/38 0:39 +0.09 2.Be3 fxg6 3.hxg6 h6 4.Kb1 Rxc3 5.bxc3 Qxc3 (3.681.267) 93
11/41 0:47 +M10 2.gxh7+ Kxh7 3.Bxg7 Bxg7 4.h6 Kg8 5.hxg7 f5 6.Qh6 Kf7 7.g8Q+ Rxg8 8.Rxg8 Ke7 9.Qh7+ Bf7 10.Nd5+ Ke6 11.Qxf5+ (4.435.718) 93
11/41 0:48 +M10 2.gxh7+ Kxh7 3.Bxg7 Bxg7 4.h6 Kg8 5.hxg7 f5 6.Qh6 Kf7 7.g8Q+ Rxg8 8.Rxg8 Ke7 9.Qh7+ Bf7 10.Nd5+ Ke6 11.Qxf5+ (4.510.589) 93
12/43 0:49 +M10 2.gxh7+ Kxh7 3.Bxg7 Bxg7 4.h6 Kg8 5.hxg7 f5 6.Qh6 Kf7 7.g8Q+ Rxg8 8.Rxg8 Ke7 9.Qh7+ Bf7 10.Nd5+ Ke6 11.Qxf5+ (4.703.751) 94
12/43 0:50 +M10 2.gxh7+ Kxh7 3.Bxg7 Bxg7 4.h6 Kg8 5.hxg7 f5 6.Qh6 Kf7 7.g8Q+ Rxg8 8.Rxg8 Ke7 9.Qh7+ Bf7 10.Nd5+ Ke6 11.Qxf5+ (4.748.596) 94
13/45 0:53 +M10 2.gxh7+ Kxh7 3.Bxg7 Bxg7 4.h6 Kg8 5.hxg7 f5 6.Qh6 Kf7 7.g8Q+ Rxg8 8.Rxg8 Ke7 9.Qh7+ Bf7 10.Nd5+ Ke6 11.Qxf5+ (5.192.739) 96
13/45 0:54 +M10 2.gxh7+ Kxh7 3.Bxg7 Bxg7 4.h6 Kg8 5.hxg7 f5 6.Qh6 Kf7 7.g8Q+ Rxg8 8.Rxg8 Ke7 9.Qh7+ Bf7 10.Nd5+ Ke6 11.Qxf5+ (5.313.043) 96
14/45 1:00 +M10 2.gxh7+ Kxh7 3.Bxg7 Bxg7 4.h6 Kg8 5.hxg7 f5 6.Qh6 Kf7 7.g8Q+ Rxg8 8.Rxg8 Ke7 9.Qh7+ Bf7 10.Nd5+ Ke6 11.Qxf5+ (6.043.718) 100
14/45 1:02 +M10 2.gxh7+ Kxh7 3.Bxg7 Bxg7 4.h6 Kg8 5.hxg7 f5 6.Qh6 Kf7 7.g8Q+ Rxg8 8.Rxg8 Ke7 9.Qh7+ Bf7 10.Nd5+ Ke6 11.Qxf5+ (6.313.375) 101
best move: g6xh7 time: 1:06.031 min n/s: 134.790 nodes: 6.395.768
www.rybkachess.com
UCI_LimitStrength set to false
UCI_AnalyseMode set to false
setting display pv tips to true
setting preserve analysis to true
Engine: Rybka 2.3.2a 32-bit [PrAn on] (512 MB)
by Vasik Rajlich
UCI_AnalyseMode set to true
7.00 0:01 +0.09 2.gxh7+ Kxh7 3.Qg2 Rxc3 4.bxc3 Qxc3 5.Kb1 Nb6 6.Bc1 Na4 7.h6 g5 8.Rd1 Bxh6 9.Rxh6+ (36.204) 28
8.00 0:01 +0.04 2.gxh7+ Kxh7 3.Qg2 Rxc3 4.bxc3 Qxc3 5.Kb1 Nb6 6.Bc1 Na4 7.h6 g5 8.Rd1 Be7 9.Qf2 (44.430) 27
9.00 0:02 +0.21 2.gxh7+ Kxh7 3.Qg2 Rxc3 4.bxc3 Qxc3 5.Kb1 Nb6 6.Bc1 Na4 7.h6 g5 8.Rd1 Qb4 9.Rd3 Nc3+ 10.Rxc3 Rxc3 11.Bxg5 (71.603) 26
10.00 0:06 +0.95 2.gxh7+ Kxh7 3.Qg5 Qd8 4.Qg2 d5 5.exd5 Bf5 6.Bxg7 Rxc3 7.bxc3 Rxc3 8.Qg5 Ba3+ 9.Kd1 Qxg5 10.Rxg5 Rxf3 11.Ke2 Rf4 12.Na5 (161.622) 24
11.00 0:08 +0.95 2.gxh7+ Kxh7 3.Qg5 Qd8 4.Qg2 d5 5.exd5 Bf5 6.Bxg7 Rxc3 7.bxc3 Rxc3 8.Qg5 Ba3+ 9.Kd1 Qxg5 10.Rxg5 Rxf3 11.Ke2 Rf4 12.Na5 Bg4+ 13.Kd3 Bf5+ 14.Kc3 (197.930) 23
12.01 0:19 +1.76 2.gxh7+ Kxh7 3.Qg5 Qd8 4.Qg2 Qb6 5.Bxg7 Qe3+ 6.Kb1 Be7 7.h6 Rg8 8.Rh5 Nf6 9.Rh4 d5 10.a3 dxe4 11.fxe4 Rxc3 (422.936) 22
13.01 0:28 +1.79 2.gxh7+ Kxh7 3.Qg5 Qd8 4.Qg2 Rxc3 5.bxc3 Bxb3 6.axb3 Qf6 7.Bg5 Qe6 8.Kb2 d5 9.h6 g6 10.exd5 Qxd5 11.Rd1 Qb5 12.Qg4 Nb6 (606.213) 21
14.01 1:16 +1.90 2.gxh7+ Kxh7 3.Qg5 Qd8 4.Qg2 Nf6 5.Bxg7 Be7 6.h6 Qd7 7.Kb1 b5 8.Na5 Rd4 9.a3 Bd8 10.Nb3 Bxb3 11.cxb3 b4 12.axb4 Rxb4 (1.660.931) 22
15.01 1:48 +1.87 2.gxh7+ Kxh7 3.Qg5 Qd8 4.Qg2 Qb6 5.Bxg7 Qe3+ 6.Kb1 Be7 7.Bxe5 Qg5 8.Qxg5 Bxg5 9.Bxd6 Be3 10.Rg2 R4c6 11.Rd1 Nf6 12.Na5 Rb6 13.Rd3 Nxh5 14.Rxe3 Rxd6 15.Nxb7 (2.338.852) 21
16.01 4:50 +3.90 2.gxh7+ Kxh7 3.Bxg7 Bxg7 4.h6 Bf8 5.Qg5 f6 6.Qg6+ Kh8 7.h7 Qd8 8.Qg8+ (5.831.439) 20
16.01 8:10 +M10 2.gxh7+ Kxh7 3.Bxg7 Bxg7 4.h6 Bf8 5.Qg5 f6 6.Qg6+ Kh8 7.h7 Bh6+ 8.Rxh6 Bg4 9.Rxg4 Nc5 10.Qxf6+ Qg7 11.Qxg7+ (14.174.593) 29
17.01 8:18 +M10 2.gxh7+ Kxh7 3.Bxg7 Bxg7 4.h6 Bf8 5.Qg5 f6 6.Qg6+ Kh8 7.h7 Bh6+ 8.Rxh6 Bg4 9.Rxg4 Nc5 10.Qxf6+ Qg7 11.Qxg7+ (14.484.976) 29
18.01 8:31 +M10 2.gxh7+ Kxh7 3.Bxg7 Bxg7 4.h6 Bf8 5.Qg5 f6 6.Qg6+ Kh8 7.h7 Bh6+ 8.Rxh6 Bg4 9.Rxg4 Nc5 10.Qxf6+ Qg7 11.Qxg7+ (15.063.960) 30
best move: g6xh7 time: 8:34.578 min n/s: 30.187 nodes: 15.152.859

Now after 1.. Bf6 we again see how stupid it is to use only one engine for
analysis!!! This is for all those who have been recently salivating over
blitz results.

HIARCS 12 MP Copyright (c) 2008 Applied Computer Concepts Ltd. All rights reserved. www.hiarcs.com
Engine: HIARCS 12 MP [learn off sharpen off] (512 MB)
by Mark John Uniacke
7/29 0:00 +0.32 2.gxh7+ Kxh7 3.Bg5 Rxc3 4.bxc3 Qxc3 5.h6 g6 (124.694) 127
8/29 0:01 +0.08 2.gxh7+ Kxh7 3.Bg5 Rxc3 4.bxc3 Qxc3 5.h6 g6 6.Qxc3 Rxc3 7.Bxf6 Nxf6 8.Rf1 Nh5 9.Kb2 Rc6 10.Rd1 f5 11.a4 (195.357) 134
9/29 0:02 +0.33++ 2.gxh7+ (388.438) 136
9/37 0:10 +8.14 2.gxh7+ Kf8 3.h8Q+ Ke7 4.Qxc8 Qxc8 5.Bxg7 Qb8 6.h6 Rc8 7.Bxf6+ Nxf6 8.Qg5 Qc7 9.h7 Rh8 10.Rh6 (1.437.989) 138
10/37 0:12 +8.29 2.gxh7+ Kf8 3.h8Q+ Ke7 4.Qxc8 Qxc8 5.Bxg7 Qa8 6.h6 Rc8 7.h7 (1.717.444) 140
11/37 0:16 +8.52 2.gxh7+ Kf8 3.h8Q+ Ke7 4.Qxc8 Qxc8 5.Bxg7 Qb8 6.h6 Rc8 7.h7 (2.387.387) 141
12/37 0:25 +8.76 2.gxh7+ Kf8 3.h8Q+ Ke7 4.Qxc8 Qxc8 5.Bxg7 Bxg7 6.Rxg7 (3.719.164) 148
13/37 0:34 +9.01++ 2.gxh7+ (5.095.793) 147
13/41 1:31 +11.36 2.gxh7+ Kf8 3.h8Q+ Ke7 4.Qxc8 Qxc8 5.Bxg7 Qc7 6.h6 (12.929.475) 141
14/41 1:59 +11.37 2.gxh7+ Kf8 3.h8Q+ Ke7 4.Qxc8 Qxc8 5.Bxg7 Bxg7 6.Rxg7 (17.367.902) 145
best move: g6xh7 time: 2:03.859 min n/s: 146.166 nodes: 18.008.442
Engine: Zappa Mexico II (512 MB)
by Anthony Cozzie
6/19 0:00 -0.13 2.gxf7+ Kxf7 3.Be3 Rxc3 4.bxc3 Qxc3 5.Qxc3 Rxc3 (23.454) 83
6/19 0:00 -0.06 2.gxh7+ Kxh7 3.Be3 Rxc3 4.bxc3 Qxc3 5.h6 Qxd2+ 6.Nxd2 (28.560) 86
6/28 0:00 -0.06 2.gxh7+ Kxh7 3.Be3 Rxc3 4.bxc3 Qxc3 5.h6 Qxd2+ 6.Nxd2 (52.115) 90
7/28 0:00 -0.06 2.gxh7+ Kxh7 3.Be3 Rxc3 4.bxc3 Qxc3 5.h6 Qxd2+ 6.Nxd2 (63.578) 92
7/28 0:00 -0.04 2.Be3 Rxc3 3.Qxc3 Qxc3 4.bxc3 Rxc3 5.Kd2 Rc8 (85.086) 92
7/28 0:01 -0.04 2.Be3 Rxc3 3.Qxc3 Qxc3 4.bxc3 Rxc3 5.Kd2 (106.724) 94
8/28 0:02 -0.01 2.Be3 h6 3.Rd1 Be7 4.f4 f5 5.fxe5 dxe5 (194.363) 83
8/28 0:02 -0.01 2.Be3 h6 3.Rd1 Be7 4.f4 f5 5.fxe5 dxe5 (251.489) 87
9/28 0:04 -0.04 2.Be3 h6 3.Rd1 Be7 4.Kb1 Rxc3 5.bxc3 Qxc3 6.Qxc3 Rxc3 (386.357) 89
9/28 0:06 -0.04 2.Be3 h6 3.Rd1 Be7 4.Kb1 Rxc3 5.bxc3 Qxc3 6.Qxc3 Rxc3 (563.797) 92
10/28 0:09 0.00 2.Be3 h6 3.Rd1 Be7 4.gxf7+ Kxf7 5.Rhg1 Rxc3 6.Qxc3 Qxc3 7.bxc3 Rxc3 (835.507) 90
10/30 0:14 +3.13 2.gxh7+ Kxh7 3.Bxg7 Bxg7 4.h6 Bf8 5.Qg2 f6 6.Qg6+ Kh8 7.h7 (1.260.937) 89
10/30 0:14 +3.13 2.gxh7+ Kxh7 3.Bxg7 Bxg7 4.h6 Bf8 5.Qg2 f6 6.Qg6+ Kh8 7.h7 (1.294.012) 90
11/41 0:38 +5.17 2.gxh7+ Kf8 3.h8Q+ Ke7 4.Qxc8 Qxc8 5.Bxg7 Bxg7 6.Rxg7 Nf6 7.h6 b5 8.Nd5+ Bxd5 9.exd5 (3.643.200) 94
11/41 0:38 +5.17 2.gxh7+ Kf8 3.h8Q+ Ke7 4.Qxc8 Qxc8 5.Bxg7 Bxg7 6.Rxg7 Nf6 7.h6 b5 8.Nd5+ Bxd5 9.exd5 (3.683.614) 94
12/41 0:54 +5.36 2.gxh7+ Kf8 3.h8Q+ Ke7 4.Qxc8 Qxc8 5.Bxg7 Bxg7 6.Rxg7 Nf6 7.h6 b5 8.h7 Qh8 9.f4 b4 10.fxe5 dxe5 (5.198.538) 95
12/41 0:54 +5.36 2.gxh7+ Kf8 3.h8Q+ Ke7 4.Qxc8 Qxc8 5.Bxg7 Bxg7 6.Rxg7 Nf6 7.h6 b5 8.h7 Qh8 9.f4 b4 10.fxe5 dxe5 (5.287.429) 96
13/45 1:45 +6.19 2.gxh7+ Kf8 3.h8Q+ Ke7 4.Qxc8 Qxc8 5.Bxg7 Bxg7 6.Rxg7 Nf6 7.h6 b5 8.h7 Qh8 9.f4 b4 10.fxe5 dxe5 (10.347.997) 98
13/45 1:48 +6.19 2.gxh7+ Kf8 3.h8Q+ Ke7 4.Qxc8 Qxc8 5.Bxg7 Bxg7 6.Rxg7 Nf6 7.h6 b5 8.h7 Qh8 9.f4 b4 10.fxe5 dxe5 (10.678.189) 98
best move: g6xh7 time: 4:58.360 min n/s: 95.443 nodes: 29.556.449
www.rybkachess.com
UCI_LimitStrength set to false
UCI_AnalyseMode set to false
setting display pv tips to true
setting preserve analysis to true
Engine: Rybka 2.3.2a 32-bit [PrAn on] (512 MB)
by Vasik Rajlich
UCI_AnalyseMode set to true
7.00 0:01 +0.24 2.Bg5 fxg6 3.hxg6 h6 4.Bxf6 Nxf6 5.Kb1 b5 6.a3 Rc6 7.Rc1 Qb6 8.Ka2 (42.590) 27
8.00 0:01 +0.19 2.Bg5 fxg6 3.hxg6 h6 4.Bxf6 Nxf6 5.Kb1 b5 6.a3 Rc6 7.Rc1 Qb6 8.f4 Bxb3 9.cxb3 exf4 10.Qxf4 (50.762) 27
9.00 0:04 +0.12 2.Bg5 h6 3.gxf7+ Kxf7 4.Be3 Rxc3 5.bxc3 Qxc3 6.Qxc3 Rxc3 7.Kd2 Rc8 8.Rg6 b6 9.Rd1 Bc4 10.Kc1 Ke6 (130.096) 27
10.00 0:09 +0.06 2.Bg5 h6 3.gxf7+ Kxf7 4.Be3 Rxc3 5.bxc3 Qxc3 6.Qxc3 Rxc3 7.Kd2 Rc8 8.Rg2 d5 9.c3 b6 10.Rd1 Be7 11.Kd3 (237.021) 26
10.00 0:10 +0.09 2.gxh7+ Kxh7 3.Be3 Rxc3 4.bxc3 Qxc3 5.Qxc3 Rxc3 6.Kd2 Rc8 7.Bg5 d5 8.h6 g6 9.Bxf6 Nxf6 10.Rh4 dxe4 11.fxe4 Rd8+ 12.Kc3 Rc8+ 13.Kb2 Rd8 (261.839) 25
11.00 0:13 +0.04 2.gxh7+ Kxh7 3.Be3 Rxc3 4.bxc3 Qxc3 5.Qxc3 Rxc3 6.Kd2 Rc4 7.h6 g6 8.Na5 Rc7 9.Rb1 b5 10.a3 d5 11.Kd3 dxe4+ 12.fxe4 Nc5+ 13.Bxc5 Rxc5 14.Rhf1 (370.807) 27
11.02 0:17 +0.09 2.Bg5 h6 3.gxf7+ Kxf7 4.Be3 Rxc3 5.bxc3 Qxc3 6.Qxc3 Rxc3 7.Kd2 Rc8 8.Rg6 b6 9.Rd1 Ke7 10.Rg2 Kf7 11.Kd3 Bc4+ 12.Kd2 (429.423) 25
12.01 0:27 +0.06 2.Bg5 h6 3.Be3 Rxc3 4.bxc3 Qxc3 5.Qxc3 Rxc3 6.Kd2 Rc8 7.Rg2 b6 8.c3 a5 9.gxf7+ Kxf7 10.Rb1 a4 11.Nc1 Bh3 (701.458) 26
13.01 0:39 +0.11 2.Bg5 h6 3.Be3 Rxc3 4.bxc3 Qxc3 5.Qxc3 Rxc3 6.Kd2 Rc8 7.Rg2 b6 8.c3 a5 9.gxf7+ Kxf7 10.Rb1 Ke7 11.a4 Bf7 12.Rh2 Bc4 (992.842) 25
14.01 0:56 +0.08 2.Bg5 h6 3.Be3 Rxc3 4.bxc3 Qxc3 5.Qxc3 Rxc3 6.Kd2 Rc8 7.gxf7+ Kxf7 8.Rg6 b6 9.c3 Rc4 10.Kc2 d5 11.Nd2 Rc8 12.Kb2 Nc5 13.Bxc5 Rxc5 (1.458.941) 26
15.01 2:41 0.00 2.Bg5 h6 3.Be3 a5 4.gxf7+ Kxf7 5.Rh2 Rxc3 6.Qxc3 Qxc3 7.bxc3 a4 8.Na5 Rc7 9.f4 Bxa2 10.f5 a3 11.Kd2 Nc5 12.Bxc5 dxc5 13.c4 b6 14.Nb3 Rd7+ 15.Kc3 (4.498.164) 28
15.02 5:28 +2.11 2.gxh7+ Kxh7 3.Bxg7 Bxg7 4.h6 Bf8 5.Qg5 f6 6.Qg6+ Kh8 7.h7 Rxc3 8.Qg8+ (9.061.775) 28
15.01 31:51 +7.79 2.gxh7+ Kf8 3.h8Q+ Ke7 4.Qxc8 Qxc8 5.Bxg7 Bxg7 6.Rxg7 Qh8 7.h6 Rc8 8.Nd5+ Bxd5 9.Qxd5 Qf8 10.Rd1 Rc6 11.Na5 Rb6 12.Nc4 (50.827.001) 27
16.01 46:06 +7.86 2.gxh7+ Kf8 3.h8Q+ Ke7 4.Qxc8 Qxc8 5.Bxg7 Bxg7 6.Rxg7 Qh8 7.h6 Nf6 8.h7 Rc8 9.Qg5 b5 10.Rh6 Kd7 11.Rxf6 Re8 12.Rxe6 Rxe6 13.Rxf7+ (70.177.510) 25
best move: g6xh7 time: 49:06.984 min n/s: 26.389 nodes: 75.932.818
setting outlook to slightly optimistic
7.00 0:01 +0.14 2.Bg5 h6 3.Bxf6 Nxf6 4.Kb1 b5 5.gxf7+ Kxf7 6.Rh2 b4 7.Nd1 Kf8 8.Ne3 (48.318) 28
8.00 0:02 +0.07 2.Bg5 h6 3.Bxf6 Nxf6 4.Kb1 b5 5.gxf7+ Kxf7 6.Rh2 b4 7.Nd1 Qb6 8.Qg2 Rg8 9.Qg6+ Ke7 (64.173) 28
9.00 0:04 +0.14 2.Bg5 h6 3.gxf7+ Kf8 4.Be3 Kxf7 5.Kb1 Rxc3 6.bxc3 Qxc3 7.Rd1 Be7 8.Qxc3 Rxc3 9.Rd3 Rc8 10.Kb2 (114.314) 26
10.00 0:08 +0.09 2.Bg5 fxg6 3.hxg6 h6 4.Bxf6 Nxf6 5.Kb1 b5 6.Rc1 Rd8 7.a3 d5 8.Rcd1 d4 9.Rh2 Qe7 (195.671) 24
10.00 0:12 +0.14 2.gxf7+ Kxf7 3.Bg5 Rxc3 4.bxc3 Qxc3 5.Bxf6 Nxf6 6.Qxc3 Rxc3 7.Na5 b5 8.Nb7 Rxf3 9.Nd8+ Ke7 10.Nxe6 Kxe6 11.Rxg7 Nxe4 12.Rxh7 Nc3 13.Kb2 e4 14.Rg1 (306.680) 24
11.00 0:22 +0.11 2.gxf7+ Kxf7 3.Bg5 b5 4.Kb1 h6 5.Be3 Rxc3 6.bxc3 Qxc3 7.Rd1 Qxd2 8.Rxd2 Be7 9.Kb2 Nf6 10.c3 d5 11.exd5 Nxd5 (553.940) 25
12.01 0:29 +0.09 2.gxf7+ Kxf7 3.Bg5 b5 4.Kb1 h6 5.Bxf6 Nxf6 6.Rg6 Qd7 7.a3 Kf8 8.Rd1 b4 9.axb4 Rxb4 10.Qxd6+ Qxd6 11.Rxd6 Bxb3 12.cxb3 Rxb3 13.Kc2 Rcb8 (741.140) 25
13.01 0:44 +0.13 2.gxf7+ Kxf7 3.Bg5 b5 4.Kb1 h6 5.Bxf6 Nxf6 6.Rg6 Qd7 7.a3 Kf8 8.Rxf6+ gxf6 9.Rg1 Rxc3 10.bxc3 Ke7 11.Rg6 Qc6 12.Kb2 f5 13.Rg7+ Bf7 (1.107.887) 25
14.01 1:15 +0.08 2.gxf7+ Kxf7 3.Bg5 b5 4.Kb1 h6 5.Be3 b4 6.Nd5 Bxd5 7.Qxd5+ Kf8 8.Na1 Qc6 9.Rd1 Qxd5 10.Rxd5 Be7 11.Ra5 R8c6 12.Rg1 Nc5 (1.935.049) 26
14.03 2:04 +2.16 2.gxh7+ Kxh7 3.Bxg7 Bxg7 4.h6 Bf8 5.Qg2 f6 6.Qg6+ Kh8 7.h7 Rb4 8.Qg8+ Bxg8 9.hxg8Q+ (3.248.991) 26
14.01 3:54 +5.15 2.gxh7+ Kxh7 3.Bxg7 Bxg7 4.h6 Bf8 5.Qg2 f6 6.Qg6+ Kh8 7.h7 Bh6+ 8.Rxh6 Bg4 9.Rxg4 Nb6 10.Qxf6+ Qg7 11.Qxg7+ (7.848.192) 34
15.01 18:27 +7.56 2.gxh7+ Kf8 3.h8Q+ Ke7 4.Qxc8 Qxc8 5.Bxg7 Bxg7 6.Rxg7 Qh8 7.h6 Rc8 8.Nd5+ Bxd5 9.Qxd5 Qf8 10.Rd1 Ke8 11.Qxb7 Rd8 12.Qc7 Nf6 13.Nc5 Qe7 14.Qc6+ Kf8 15.Nb7 (31.705.681) 29
best move: g6xh7 time: 39:03.656 min n/s: 26.529 nodes: 60.719.104
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Guetti

Re: Test Position: Bh6!!!

Post by Guetti »

Andrew wrote:Andreas, looks like you're using Hiarcs 12 there :)
Not Hiarcs 12, I'm still happy with Hiarcs 11.2 MP. :)

Ok, I have to correct, my "No engine would consider..." was a bit prematurely. For Hiarcs it was a matter of seconds, therefore I assumed other engines would find the same. I actually didn't test any other engines.
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User avatar
meschle
Posts: 200
Joined: Tue Apr 01, 2008 11:53 pm

Re: Test Position: Bh6!!!

Post by meschle »

Spike 1.2 turin did well finding in 35secs - amd sempron single cpu

FEN: 2r3k1/1pqnbppp/p2pb1P1/4p2P/2r1P3/1NN1BP2/PPPQ4/2K3RR w - - 0 18

Spike1.2:

8 00:01 760.038 648.496 +1.15 g6xh7+ Kg8xh7 Qd2g2 Be7f6 h5h6 g7g6 Kc1d1 Rc4xc3 b2xc3 Qc7xc3 Rg1e1
9 00:02 1.339.863 686.053 +1.06 g6xh7+ Kg8xh7 Qd2g2 Be7f6 Be3g5 Qc7d8 Qg2d2 Rc4c6 h5h6 g7g6 Kc1d1 Be6xb3 a2xb3
9 00:02 1.731.140 696.916 +1.06 g6xh7+ Kg8xh7 Qd2g2 Be7f6 Be3g5 Qc7d8 Qg2d2 Rc4c6 h5h6 g7g6 Kc1d1 Be6xb3 a2xb3
10 00:03 2.836.466 723.219 +0.96 g6xh7+ Kg8xh7 Qd2g2 Be7f6 Be3g5 Qc7d8 Qg2d2 Rc4c6 h5h6 g7g6 Bg5xf6 Qd8xf6 Nb3a5 Rc6xc3 b2xc3 Qf6xf3
10 00:06 4.468.898 720.441 +0.96 g6xh7+ Kg8xh7 Qd2g2 Be7f6 Be3g5 Qc7d8 Qg2d2 Rc4c6 h5h6 g7g6 Bg5xf6 Qd8xf6 Nb3a5 Rc6xc3 b2xc3 Qf6xf3
11 00:13 9.499.771 733.403 +0.90 g6xh7+ Kg8xh7 h5h6 g7g6 Kc1d1 Rc4xc3 b2xc3 Qc7xc3 Qd2xc3 Rc8xc3 Kd1d2 Rc3c8 c2c3 Be6c4
11 00:19 14.170.568 727.890 +0.90 g6xh7+ Kg8xh7 h5h6 g7g6 Kc1d1 Rc4xc3 b2xc3 Qc7xc3 Qd2xc3 Rc8xc3 Kd1d2 Rc3c8 c2c3 Be6c4
12 00:31 22.985.488 735.912 +0.82 g6xh7+ Kg8xh7 h5h6 g7g6 Kc1d1 Rc4xc3 b2xc3 Qc7xc3 Qd2xc3 Rc8xc3 Kd1d2 Rc3c8 c2c3 d6d5 Be3g5 Be7xg5+ Rg1xg5 d5xe4 f3xe4
12+ 00:35 26.068.260 737.245 +1.20 Be3h6 Be7f6 g6xh7+ Kg8xh7 Bh6xg7 Bf6xg7 h5h6 Bg7f8 Qd2g2 f7f6 Qg2g6+ Kh7h8 h6h7 Rc4xc3 Qg6g8+
12+ 00:35 26.068.260 737.245 +1.20 Be3h6 Be7f6 g6xh7+ Kg8xh7 Bh6xg7 Bf6xg7 h5h6 Bg7f8 Qd2g2 f7f6 Qg2g6+ Kh7h8 h6h7 Rc4xc3 Qg6g8+
12 00:46 34.101.049 738.821 +1.57 Be3h6 h7xg6 h5xg6 Rc4xc3 g6xf7+ Kg8xf7 Rg1xg7+ Kf7e8 b2xc3 Qc7xc3 Rg7g3 Nd7f6 Qd2xc3 Rc8xc3 Rh1g1 Nf6h5 Rg3g6
12 00:51 38.264.576 738.741 +1.57 Be3h6 h7xg6 h5xg6 Rc4xc3 g6xf7+ Kg8xf7 Rg1xg7+ Kf7e8 b2xc3 Qc7xc3 Rg7g3 Nd7f6 Qd2xc3 Rc8xc3 Rh1g1 Nf6h5 Rg3g6
13 01:01 45.437.414 738.447 +1.56 Be3h6 h7xg6 h5xg6 Rc4xc3 g6xf7+ Kg8xf7 Rg1xg7+ Kf7e8 b2xc3 Qc7xc3 Rg7g3 Nd7f6 Qd2xc3 Rc8xc3 Rh1g1 Nf6h5 Kc1b2 Nh5xg3 Kb2xc3
Regards Mark

Quad Q6600 3.0 Ghz, Vista 64bit, 4gb Ram
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swami
Posts: 6640
Joined: Thu Mar 09, 2006 4:21 am

Re: Test Position: Bh6!!!

Post by swami »

Guetti wrote:
swami wrote:
Well it doesn't show Bf6 or Bf8 in the place of hxg6(which loses anyway), Bf6 might let white think for a while to find another strong move with significant eval.
No engines considers Bf6, because it loses immediately.
After 1. Bh6 Bf6

+11.43 16/1 00:01:24 575152 2. gxh7 Kf8 3. h8=Q Ke7 4. Qxc8 Qxc8 5. Bxg7 Rxc3 6. Qxc3 Qd8 7. h6 Bxg7 8. Rxg7

if 2. ... Kxh7
Yes, You are right, I didn't analyze that variation carefully. :)
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