Test Position: Nxg2 followed by d4!

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swami
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Test Position: Nxg2 followed by d4!

Post by swami » Wed Apr 09, 2008 9:13 am

[d]r2qr1k1/p4pbp/bp4p1/3p4/8/BPN1n1P1/P2QN1BP/R2R2K1 b - - 0 18

Does your engine find Nxg2 first, then show Kxg2, d4! in analysis line?

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Ross Boyd
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Re: Test Position: Nxg2 followed by d4!

Post by Ross Boyd » Wed Apr 09, 2008 12:04 pm

Yes...

TRACE 2 needs about 35 seconds on a Q6600 (single threaded)

Code: Select all

FEN: r2qr1k1/p4pbp/bp4p1/3p4/8/BPN1n1P1/P2QN1BP/R2R2K1 b - - 0 18 

TRACE 2.00:
  1/4	00:00.157	       2.537	0	+0.70	Nxd1
  2/11	00:00.157	       2.716	0	+0.70	Nxd1 Rxd1
  3/12	00:00.157	       6.306	5.000	+0.28	Nxd1 Rxd1 Bxe2
  3/13	00:00.157	       8.363	5.000	+0.56	Bxe2 Nxe2 Bxa1
  3/12	00:00.157	       9.444	5.000	+0.61	Rc8 Nd4 Nxd1
  4/13	00:00.157	      15.735	15.000	+0.61	Rc8 Nd4 Nxd1 Rxd1
  5/14	00:00.188	      47.995	1.451.612	+0.28	Rc8 Nd4 Nxd1 Rxd1 Re5
  5/13	00:00.188	      54.019	1.612.903	+0.64	Bxe2 Nxe2 Bxa1 Rxa1 Rc8
  6/15	00:00.219	      99.179	1.532.258	+0.66	Bxe2 Nxe2 Bxa1 Rxa1 Rc8 Nd4
  6/18	00:00.250	     149.144	1.559.139	+0.78	Rc8 Nd4 Bxd4 Qxd4 Nc2 Qa4
  7/19	00:00.313	     230.995	1.474.358	+0.78	Rc8 Nd4 Bxd4 Qxd4 Nc2 Qa4 Nxa1
  8/21	00:00.485	     457.368	1.537.162	+0.78	Rc8 Nd4 Bxd4 Qxd4 Nc2 Qa4 Nxa1 Qxa6
  9/25	00:00.766	     924.762	1.510.673	+0.59	Rc8 Nd4 Bxd4 Qxd4 Nc2 Qa4 Rxc3 Bb2 Rc7
  9/22	00:00.829	   1.024.038	1.520.119	+0.60	Bxe2 Nxe2 Bxa1 Rxa1 Rc8 Nd4 Nxg2 Kxg2 Qf6
 10/22	00:01.579	   2.247.252	1.579.873	+0.60	Bxe2 Nxe2 Bxa1 Rxa1 Rc8 Nd4 Qf6 Re1 Nxg2 Rxe8+ Rxe8
 11/24	00:03.719	   5.613.469	1.574.957	+0.60	Bxe2 Nxe2 Bxa1 Rxa1 Rc8 Nd4 Qf6 Re1 Nxg2 Rxe8+ Rxe8 Kxg2
 11/29	00:05.875	   7.400.751	1.568.461	+0.65	Rc8 Nd4 Nf5 Nxf5 Bxc3 Nh6+ Kg7 Nxf7 Bxd2 Nxd8 Be3+ Kh1 Rexd8
 12/31	00:10.172	  15.843.484	1.581.627	+0.57	Rc8 Nd4 Bxd4 Qxd4 Nc2 Qa4 Rxc3 Bb2 Rce3 Qxa6 Nxa1
 13/38	00:30.922	  47.891.414	1.608.936	+0.55	Rc8 Nd4 Bf6 Rdc1 Nxg2 Kxg2 Bg5 Qb2 Bxc1 Rxc1 Bd3
 13/37	00:35.500	  57.310.278	1.621.537	+1.28	Nxg2 Kxg2 d4 Nxd4 Bb7+ Kf2 Qd7 Bb4 Rad8 Nf3 Qc6 Qf4 Bxc3
 14/38	00:44.782	  72.618.180	1.627.226	+1.54	Nxg2 Kxg2 d4 Nxd4 Bb7+ Kf2 Qd7 Rac1 Rad8 Nf3 Qc6 Qf4 Bxc3 Rxd8 Rxd8

Tony Thomas

Re: Test Position: Nxg2 followed by d4!

Post by Tony Thomas » Wed Apr 09, 2008 12:13 pm

I see that you got Trace 2 almost ready...

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Dr.Wael Deeb
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Re: Test Position: Nxg2 followed by d4!

Post by Dr.Wael Deeb » Wed Apr 09, 2008 12:20 pm

Tony Thomas wrote:I see that you got Trace 2 almost ready...
It seems that you have big eyes Tony and they function well :D
_No one can hit as hard as life.But it ain’t about how hard you can hit.It’s about how hard you can get hit and keep moving forward.How much you can take and keep moving forward….

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Ross Boyd
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Re: Test Position: Nxg2 followed by d4!

Post by Ross Boyd » Wed Apr 09, 2008 12:22 pm

Tony Thomas wrote:I see that you got Trace 2 almost ready...
I wish, I wish...

She usually solves faster than 1.37a but she doesn't play well.
And the search has some 'sticking' points which I haven't solved yet.

Time is very limited here... doing some studies as well as full-time work.... so don't get excited... just yet...

sorry :(

Ross

Guetti

Re: Test Position: Nxg2 followed by d4!

Post by Guetti » Wed Apr 09, 2008 1:31 pm

Hiracs 11.2MP finds it immediately (1s), but then switches moves d4 first followed by Nxg2:

Code: Select all

8 -3 60 325910 Bxe2 Nxe2 Bxa1 Rxa1 Rc8 Nd4 f5 Re1 Nxg2 Kxg2
9 +7 84 475125 Bxe2 Nxe2 Bxa1 Rxa1 Nxg2 Kxg2 d4 Nxd4 Qd5+ Kf2 Rad8 Rd1 Qe4
10 -15 149 989696 Bxe2 Nxe2 Bxa1 Rxa1 Nxg2 Kxg2 Rc8 Nd4 a6 Rf1 f5 Qh6 Qf6
10 -14 164 1125452 Nxg2
10 +32 171 1158335 Nxg2
10 +165 194 1314022 Nxg2 Kxg2 d4 Nxd4 Bb7+ Kf1 Qd7 Ndb5 Qc6 Nd5 Qxb5+
11 +142 249 1743545 Nxg2 Kxg2 d4 Nxd4 Bb7+ Kf2 Qd7 Rac1 Bxd4+ Qxd4
12 +167 336 2527742 Nxg2
12 +219 420 3328467 Nxg2 Kxg2 d4 Nxd4 Bb7+ Kf2 Qd7 Ncb5 Qd5 Rg1 a6 Qf4 axb5 Bb2
13 +244 633 5324368 Nxg2
13 +288 1040 9326798 Nxg2 Kxg2 d4 Bb2 dxc3 Nxc3 Qxd2+ Rxd2 Rac8 Nd1 Bb7+ Kh3 Bxb2 Rxb2 Rc5 g4 f5 Nf2 f4
14 +278 1759 16290675 Nxg2 Kxg2 d4 Bb2 dxc3 Nxc3 Qxd2+ Rxd2 Rac8 Nd1 Bb7+ Kf1 Bh6 Rf2 f5 Bc3 Bf8 a4 Bd6
14 +279 2292 21189014 d4
14 +279 2392 22188084 d4 Nxd4 Nxg2 Kxg2 Bb7+ Kf2 Qd7 Nf3
15 +291 3246 30567428 d4 Nxd4 Nxg2 Kxg2 Bb7+ Kf2 Qd7 Nf3 Qxd2+ Nxd2 Bd4+ Kf1 Bc8 Nce4 Ba6+ Kg2 Bxa1 Rxa1 Bb7 Re1 f5 Kf3 Rad8 Bb4 fxe4+ Nxe4
16 +291 5150 49048660 d4 Nxd4 Nxg2 Kxg2 Bb7+ Kf2 Qd7 Nf3 Qxd2+ Nxd2 Bd4+ Kf1 Bc8 Nce4 Ba6+ Kg2 Bxa1 Rxa1 Bb7 Re1 f5 Kf3 Rad8 Bb4 fxe4+

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