engines & positional play

[Dann Corbit]

A little over ten years ago, another great chess player got a surprise:
[d]r1r1q1k1/6p1/p2b1p1p/1p1PpP2/PPp5/2P4P/R1B2QP1/R5K1 w - - bm axb5; am Qb6;

The computer played axb5. Back in those days, none of the PC programs could find it. I bet that lots of them can find it now.

Hi Dann,
This famous position has been discussed a lot, and I think the consensus these days is that Qb6 is stronger than axb5. axb5 doesn't win against best defense (Kasparov resigned in a drawn position!), while Qb6 very likely might win by force.

I wonder if someone with one of those monster boxes and SMP Rybka cold give it a pounding for a full weekend. I would be keenly interested to see the outcome.
I am giving a bunch of strong programs a one hour each look tonight, but there are machines that can probably duplicate the quality of that analysis in 15 minutes or less.

[menniepals]

Of course, Rybka. Take a look at the latest Christiansen vs Rybka match and you will be amazed with its positional squeezing style. Remember, Fruit is also a positional and technical program but then it turns really tactical whenever it sees an opening. At least, that's how I see.

[Eelco de Groot]

A little over ten years ago, another great chess player got a surprise:
[d]r1r1q1k1/6p1/p2b1p1p/1p1PpP2/PPp5/2P4P/R1B2QP1/R5K1 w - - bm axb5; am Qb6;

The computer played axb5. Back in those days, none of the PC programs could find it. I bet that lots of them can find it now.

Hi Dann,
This famous position has been discussed a lot, and I think the consensus these days is that Qb6 is stronger than axb5. axb5 doesn't win against best defense (Kasparov resigned in a drawn position!), while Qb6 very likely might win by force.

I wonder if someone with one of those monster boxes and SMP Rybka cold give it a pounding for a full weekend. I would be keenly interested to see the outcome.
I am giving a bunch of strong programs a one hour each look tonight, but there are machines that can probably duplicate the quality of that analysis in 15 minutes or less.

The brandnew Toga 3.1.2 Checkov 1f with a minimal margin just has switched from Qb6 to axb5 on my machine, but it is not a deep enough analysis I suppose. My hardware is not competitive with Duals and Quads for that, a really deep analysis if it has not been done already would be nice, but is it not already in the archives somewhere?


r1r1q1k1/6p1/p2b1p1p/1p1PpP2/PPp5/2P4P/R1B2QP1/R5K1 w - -

Engine: Toga II 3.1.2 Checkov 1f (256 MB, single core Athlon 2009 MHz)
by Thomas Gaksch and Fabien Letouzey

1/06 0:00 +0.73 1.axb5 axb5 (8)

2/11 0:00 +0.69 1.axb5 axb5 2.Rxa8 Rxa8 3.Rxa8 Qxa8 (370)

2/12 0:00 +1.13++ 1.Qb6 Qf7 2.Qxd6 Qa7+ 3.Kf1 (937)

3/12 0:00 +0.96 1.Qb6 Bc7 2.Qe6+ Qxe6 3.fxe6 Bb6+
4.Kh2 (1.454)

4/14 0:00 +0.96 1.Qb6 Bc7 2.Qe6+ Qxe6 3.fxe6 Bb6+
4.Kh2 (2.580)

5/18 0:00 +1.30 1.Qb6 Qd7 2.axb5 Rcb8 3.Qc6 (7.330)

6/18 0:00 +1.43 1.Qb6 Qd7 2.axb5 Rcb8 3.Qc6 Qa7+
4.Kh1 (12.066)

7/18 0:00 +1.33 1.Qb6 Qd7 2.axb5 Rab8 3.Qxa6 Rxb5
4.Be4 (25.617)

8/25 0:00 +1.67 1.Qb6 Rd8 2.axb5 Rab8 3.Qxa6 e4
4.Re1 Qe5 5.Bxe4 Qxc3 (80.106)

9/26 0:00 +1.21-- 1.Qb6 Rd8 2.Be4 Be7 3.axb5 Rd6 4.Qc7 Rc8
5.Qb7 axb5 (179.533)

10/26 0:00 +1.41 1.Qb6 Rd8 2.Be4 a5 3.axb5 Rab8
4.Qxa5 Rxb5 5.Qa7 Kh8 6.h4 (364.770)

11/28 0:01 +1.66 1.Qb6 Rd8 2.Be4 a5 3.axb5 Rab8
4.Qxa5 Rxb5 5.Qa6 h5 6.Qc6 Qxc6
7.dxc6 (673.208) 620

12/28 0:01 +1.64 1.Qb6 Rd8 2.Be4 Be7 3.axb5 Rd6 4.Qa5 Bd8
5.Qa4 a5 6.g4 Rb8 7.bxa5 Rxb5 8.Qxc4 (1.090.136) 626

13/29 0:02 +1.64 1.Qb6 Rd8 2.Be4 Be7 3.axb5 Rd6 4.Qa5 Bd8
5.Qa4 a5 6.g4 Rb8 7.bxa5 Rxb5 8.Qxc4 (1.698.758) 630

14/34 0:04 +1.69 1.Qb6 Rd8 2.Be4 Be7 3.axb5 Rd6 4.Qa5 Bd8
5.Qa4 a5 6.bxa5 Bxa5 7.Kh1 Qc8 8.Qd1 Qc7
9.Qg4 (3.095.949) 637

15/49 0:19 +1.72 1.Qb6 Rd8 2.Be4 bxa4 3.Rxa4 Rab8
4.Qxa6 Rbc8 5.Qb7 Rb8 6.Qa7 h5 7.Qf2 Rd7
8.Ra7 Rdb7 9.R7a6 Rd8 (12.365.383) 641

16/59 1:34 +0.91-- 1.Qb6 Qe7 2.axb5 Rab8 3.Qxa6 e4
4.Qa7 Qe5 5.Qe3 Re8 6.b6 Qh2+ 7.Kf1 Bf4
8.Qg1 Qg3 9.Qf2 Qg5 10.h4 Qxf5
11.Kg1 (60.522.429) 637

17/59 2:52 +0.76 1.Qb6 Qe7 2.Be4 Rcb8 3.Qe3 Qe8 4.Qe2 Rd8
5.Ra3 Kh8 6.Qa2 Rac8 7.axb5 axb5
8.Ra7 Bb8 9.Rb7 Bd6 (110.382.443) 638

18/60 7:55 +0.75 1.Qb6 Qe7 2.axb5 Rab8 3.Qxa6 e4
4.Qa7 Qe5 5.Qe3 Re8 6.b6 Qh2+ 7.Kf1 Bf4
8.Qg1 Qg3 9.Qf2 Qg5 10.h4 Qxf5 11.g3 Qh3+
12.Qg2 Qxg3 13.Qxg3 Bxg3 (305.882.857) 643

19/60 12:01 +0.77 1.Qb6 Qe7 2.axb5 Rab8 3.Qe3 axb5
4.Ra6 Qd8 5.Kh2 Ra8 6.Be4 Rcb8 7.Qf2 Rxa6
8.Rxa6 Kh8 9.g4 Bc7 10.Qd2 Qd7
11.Ra7 Re8 12.Qe3 (457.350.975) 634

20/60 15:04 +0.78 1.Qb6 Qe7 2.axb5 Rab8 3.Qe3 axb5
4.Ra6 Qd8 5.Kh2 Ra8 6.Be4 Rcb8 7.Qf2 Rxa6
8.Rxa6 Kh8 9.g4 Rb7 10.h4 Bc7 11.d6 Bb6
12.Qd2 Rd7 13.Ra8 (574.637.851) 635

21/66 22:39 +0.75 1.Qb6 Qe7 2.axb5 Rab8 3.Qe3 axb5
4.Ra6 Qd8 5.Kh2 Ra8 6.Be4 Rcb8 7.Qf2 Rxa6
8.Rxa6 Rb7 9.Qa2 Kh7 10.h4 Kh8
11.Ra8 Rb8 12.Ra7 Qb6 13.g4 (865.367.343) 636

21/75 37:44 +0.76 1.axb5 axb5 2.Be4 Qd8 3.Kh2 Rcb8
4.Ra6 Kh7 5.g4 Rxa6 6.Rxa6 Rb7 7.Qa2 Qd7
8.Ra8 Rb8 9.Ra7 Rb7 10.Ra6 Rb8 11.h4 Kg8
12.Qf2 Kh8 13.Ra7 (1.463.094.392) 646

Eelco

[Eelco de Groot]

Toga stays with axb5 through ply 23. But according to Vas Qb6 is really the best move here:

http://rybkaforum.net/cgi-bin/rybkaforu ... e#pid17184

Deep analysis by Rybka there in that thread goes to +0.88 at 26 ply, analysis by Steinar's Rybka 2.3.2a, with 2 cores but the 32-bit version. So the difference is not very big with axb5 and does not show a winning score at this depth.

FWIW, after 26 ply it still prefers Qb6, although the margin is small:

PV 1 (+0.88) (2349202 kn, 89 kn/s, 26 ply):
Qb6, Qe7, axb5, Rab8, Qxa6, e4, Qa7, Qe5, Qe3, Bc7, Qxe4, Qxc3, d6, Bb6+

PV 2 (+0.71) (2596732 kn, 87 kn/s, 26 ply):
axb5, axb5, Be4, Qd8, Kh2, Rxa2, Qxa2, Rb8, Qa7, Rb6, Kg3, Bb8, Qa5, Kf7

PV 3 (+0.36) (2996342 kn, 83 kn/s, 26 ply):
Qe1, a5, bxa5, Rxa5, axb5, Rxa2, Rxa2, Qxb5, Be4, Qb6+, Kh2, Bc5, Qd2, Be3

I guess neither are bad moves in the end.

/* Steinar */

r1r1q1k1/6p1/p2b1p1p/1p1PpP2/PPp5/2P4P/R1B2QP1/R5K1 w - -

Engine: Toga II 3.1.2 Checkov 1f (256 MB)
by Thomas Gaksch and Fabien Letouzey


21/66 22:39 +0.75 1.Qb6 Qe7 2.axb5 Rab8 3.Qe3 axb5
4.Ra6 Qd8 5.Kh2 Ra8 6.Be4 Rcb8 7.Qf2 Rxa6
8.Rxa6 Rb7 9.Qa2 Kh7 10.h4 Kh8
11.Ra8 Rb8 12.Ra7 Qb6 13.g4 (865.367.343) 636

21/75 37:44 +0.76 1.axb5 axb5 2.Be4 Qd8 3.Kh2 Rcb8
4.Ra6 Kh7 5.g4 Rxa6 6.Rxa6 Rb7 7.Qa2 Qd7
8.Ra8 Rb8 9.Ra7 Rb7 10.Ra6 Rb8 11.h4 Kg8
12.Qf2 Kh8 13.Ra7 (1.463.094.392) 646

22/75 78:21 +0.75 1.axb5 axb5 2.Be4 Qd8 3.Kh2 Rcb8
4.Ra6 Kh7 5.Qe3 Rxa6 6.Rxa6 Bc7
7.Qd2 Qc8 8.Rc6 Qd7 9.d6 Bb6 10.g3 Qa7
11.d7 Rd8 12.Rd6 Be3 13.Qd1 Qa2+
14.Qc2 (3.033.571.306) 645

23/75 150:44 +0.77 1.axb5 axb5 2.Be4 Qd8 3.Kh2 Rcb8
4.Ra6 Kh7 5.Qe3 Rxa6 6.Rxa6 Bc7
7.Qd2 Bd6 8.Qa2 Bc7 9.Rc6 Bb6 10.d6 Be3
11.Qe2 Bb6 12.Bd5 Qd7 13.Qh5 Qa7
14.Qg6+ (5.757.419.227) 636

I thought I vaguely remembered that Fritz also played axb5 at the time but I can be totally wrong about that, it could have been about finding Be4 and Dann says that none of the PC programs played axb5 at the time of the match.

Eelco

[ArmyBridge]

Hey Check this coplue of games, like this there are many, only you must spend time to fin them, CCRL and CEGT have many games like this, Rybka often play this kind of sacrifices, Junior, and Fritz.


Rybka 2.3.2 64-bit 4CPU (3110) - Hiarcs 11.1 4CPU (2981) [A15]
CCRL 40/40 CCRL, 23.06.2007

1.Nf3 0s 1...Nf6 0s 2.c4 0s 2...b6 0s 3.g3 0s 3...e6 0s 4.Bg2 0s 4...Bb7 0s 5.d4 0s 5...c6 0s 6.0-0 0s 6...d5 0s 7.b3 0s 7...Nbd7 0s 8.Bb2 0s 8...Be7 0s 9.e3 0s 9...0-0 0s 10.Nc3 0s 10...Rc8 Both last book move 0s 11.Qc2 +0.15/14 77s 11...dxc4 (h6) -0.15/15 148s 12.bxc4 +0.28/15 17s 12...c5 (b5) -0.11/16 76s 13.d5 +0.34/17 59s 13...exd5 -0.07/16 76s 14.Nd2 +0.31/16 14s 14...Qc7 (Bd6) +0.14/15 139s 15.cxd5 +0.47/16 57s 15...Qb8 +0.28/15 98s 16.Rad1 +0.47/17 78s 16...Rfe8 +0.32/14 60s 17.Nde4 (Nc4) +0.52/17 99s 17...Rcd8 (h6) +0.18/15 67s 18.Rd2 (Rfe1) +0.47/17 271s 18...Nxe4 (h6) +0.25/16 85s 19.Nxe4 +0.48/15 37s 19...f6 (Ne5) +0.57/16 124s 20.Rfd1 (f4) +0.70/16 157s 20...Kh8 (Bf8) +0.79/16 116s 21.a4 (h4) +0.71/17 69s 21...f5 (Ne5) +0.50/16 59s 22.Nc3 +0.66/18 69s 22...Rf8 +0.50/17 60s 23.f4 (Ne2) +0.87/17 64s 23...c4 (Bf6) +0.79/16 116s 24.Nb5 +0.99/16 16s 24...Bb4 (Bc5) +1.00/15 68s 25.Re2 +1.14/17 49s 25...Bc5 (c3) +0.93/15 43s 26.Qxc4 (Nd4) +1.15/17 26s 26...Nf6 +1.28/15 85s 27.Be5 +1.25/18 29s 27...Qc8 +1.41/16 64s 28.Qb3 +1.30/17 26s 28...Ng4 (Rd7) +1.35/16 56s 29.Bd4 (Nxa7) +1.47/18 84s 29...Bxd4 (Rfe8) +1.52/16 158s 30.Nxd4 +1.53/18 17s 30...Rd7 (Rfe8) +1.55/16 48s 31.Bf3 +1.65/18 124s 31...Nf6 (h5) +1.59/15 32s 32.Rc2 (Nxf5) +1.66/17 18s 32...Qe8 (Qa8) +1.89/16 70s 33.Nxf5 +1.95/17 27s 33...Nxd5 +1.92/15 37s 34.e4 +1.83/15 0s 34...Nf6 +2.07/16 57s 35.Nd6 +1.92/18 31s 35...Qa8 (Qe7) +2.53/17 116s 36.Rc4 +2.25/18 37s 36...Bd5 +2.63/16 40s 37.Rxd5 +2.24/20 35s 37...Nxd5 +2.67/18 57s 38.e5 +2.49/20 33s 38...Rxd6 +2.68/17 38s 39.exd6 +2.29/18 0s 39...Qe8 +2.63/17 28s 40.Kf2 +2.70/19 21s 40...Nf6 +2.74/17 53s 41.Rc7 +2.65/19 46s 41...a6 +2.85/16 115s 42.Qb4 (Kf1) +2.66/18 23s 42...Qe6 (Rg8) +2.85/16 176s 43.Re7 +2.81/18 17s 43...a5 (Qh3) +2.85/16 61s 44.Qd4 +2.96/16 27s 44...Qa2+ (Qf5) +3.12/17 194s 45.Re2 +3.12/18 10s 45...Qf7 +3.99/19 211s 46.Bc6 +3.33/18 15s 46...Rd8 +3.75/17 52s 47.d7 +3.59/19 36s 47...Qf8 +3.79/16 36s 48.Re6 (Kg2) +3.25/17 0s 48...h5 (Qf7) +3.69/15 44s 49.Kg2 (Re2) +3.34/15 0s 49...Qf7 +3.68/15 27s 50.Qd6 (Re2) +4.15/17 30s 50...h4 +4.80/16 56s 51.Qe7 +4.66/19 10s 51...Qxe7 +4.96/18 61s 52.Rxe7 +4.29/17 0s 52...hxg3 +6.03/21 77s 53.hxg3 +5.15/21 84s 53...Rf8 (Nxd7) +6.72/23 165s 54.Re8 +4.63/19 0s 54...Nxd7 (Rxe8) +12.70/24 313s 55.Bxd7 +5.54/18 13s 55...Rxe8 +12.71/23 25s 56.Bxe8 +4.63/18 0s 1-0



Naum 2.1 x64 2CPU - Deep Fritz 10 2CPU [C01]
CEGT 40/120 (AMD64 x2 4200+) CEGT (6), 09.02.2007
[-0.07;-0.28]

AMD Athlon(tm) 64 X2 Dual Core Processor 4200+ 2205 MHz W=19.2 ply; 1,621kN/ s; HS-7moves 2.0.ctg B=18.7 ply; 2,792kN/s; 94,133 TBAs; HS-7moves 2.0.ctg 1.d4 [%eval 0,0] [%emt 0:00:00] 1...e6 [%eval 0,0] [%emt 0:00:00] 2.e4 [%eval 0,0] [%emt 0:00:00] 2...d5 [%eval 0,0] [%emt 0:00:00] 3.exd5 [%eval 0,0] [%emt 0:00:00] 3...exd5 [%eval 0,0] [%emt 0:00:00] 4.c4 [%eval 0,0] [%emt 0:00:00] 4...c6 [%eval 0,0] [%emt 0:00:00] 5.Nc3 [%eval 0,0] [%emt 0:00:00] 5...Nf6 [%eval 0,0] [%emt 0:00:00] 6.h3 [%eval 0,0] [%emt 0:00:00] 6...Bd6 [%eval 0,0] [%emt 0:00:00] 7.Nf3 [%eval 0,0] [%emt 0:00:00] 7...0-0 Both last book move [%eval 0,0] [%emt 0:00:00] 8.c5 [%eval -7,20] [%emt 0:03:38] 8...Bc7 (Re8+) [%eval -28,18] [%emt 0:06:39] 9.Bd3 (Be2) [%eval 11,20] [%emt 0:03:38] 9...Re8+ [%eval -11,18] [%emt 0:03:30] 10.Be3 [%eval -11,20] [%emt 0:03:38] 10...Bf4 (Nbd7) [%eval -34,19] [%emt 0:04:29] 11.0-0 [%eval 0,19] [%emt 0:03:38] 11...Bxe3 [%eval -43,18] [%emt 0:02:47] 12.fxe3 [%eval -3,17] [%emt 0:00:10] 12...Rxe3 (Nbd7) [%eval -40,18] [%emt 0:03:44] 13.Ne5 [%eval 49,19] [%emt 0:03:45] 13...Nbd7 [%eval -31,19] [%emt 0:03:12] 14.Qd2 [%eval 27,20] [%emt 0:04:22] 14...Rxe5 [%eval -46,19] [%emt 0:03:08] 15.dxe5 [%eval 27,18] [%emt 0:00:00] 15...Nxe5 [%eval -48,19] [%emt 0:04:32] 16.Rae1 (Bc2) [%eval 3,18] [%emt 0:04:57] 16...Nxd3 [%eval -55,19] [%emt 0:03:29] 17.Qxd3 [%eval 14,16] [%emt 0:00:02] 17...Be6 (b6) [%eval -46,19] [%emt 0:04:19] 18.b4 [%eval 0,18] [%emt 0:04:42] 18...a5 (Qc7) [%eval -52,18] [%emt 0:02:39] 19.a3 [%eval 0,19] [%emt 0:03:58] 19...b6 (Qc7) [%eval -49,19] [%emt 0:03:44] 20.Qd4 [%eval 0,20] [%emt 0:03:58] 20...bxc5 [%eval -50,19] [%emt 0:04:31] 21.bxc5 (Qxc5) [%eval 0,21] [%emt 0:03:58] 21...Nd7 (Qc7) [%eval -39,19] [%emt 0:02:41] 22.Rf3 (Ne2) [%eval 0,17] [%emt 0:03:58] 22...Rc8 (Rb8) [%eval -42,19] [%emt 0:04:47] 23.Kh2 (Rc1) [%eval 0,18] [%emt 0:03:58] 23...Qe7 (Nf6) [%eval -53,20] [%emt 0:05:03] 24.Rg3 [%eval -16,19] [%emt 0:04:57] 24...g6 [%eval -52,19] [%emt 0:03:10] 25.Na4 [%eval -22,19] [%emt 0:03:55] 25...Rb8 [%eval -62,20] [%emt 0:04:12] 26.Rf3 (Qf4) [%eval -22,20] [%emt 0:03:55] 26...Rb5 [%eval -79,20] [%emt 0:04:32] 27.Qf4 [%eval -12,20] [%emt 0:03:55] 27...Qd8 [%eval -89,20] [%emt 0:05:43] 28.Kg1 (Qd4) [%eval -18,20] [%emt 0:04:04] 28...Nxc5 [%eval -56,19] [%emt 0:02:27] 29.Nxc5 [%eval -24,20] [%emt 0:03:54] 29...Rxc5 [%eval -60,19] [%emt 0:01:26] 30.Rb1 (Rb3) [%eval 0,21] [%emt 0:03:54] 30...Rb5 [%eval -56,19] [%emt 0:02:48] 31.Rxb5 [%eval 0,21] [%emt 0:03:54] 31...cxb5 [%eval -46,19] [%emt 0:03:24] 32.Qd4 [%eval 0,21] [%emt 0:03:54] 32...Qc7 (a4) [%eval -50,19] [%emt 0:08:13] 33.Rc3 [%eval 0,21] [%emt 0:03:54] 33...Qb7 (Qb8) [%eval -41,19] [%emt 0:02:22] 34.Rb3 (Rc5) [%eval 0,19] [%emt 0:03:54] 34...Qc6 [%eval -48,19] [%emt 0:04:31] 35.Rc3 [%eval 0,21] [%emt 0:03:54] 35...Qa6 (Qd6) [%eval -54,19] [%emt 0:03:02] 36.Rc7 [%eval 0,18] [%emt 0:04:10] 36...a4 (h6) [%eval -34,19] [%emt 0:04:47] 37.Rc5 (Qc5) [%eval 0,20] [%emt 0:03:50] 37...h6 (h5) [%eval -23,18] [%emt 0:01:49] 38.Qb2 (Qb4) [%eval 3,20] [%emt 0:03:50] 38...Kh7 (Qb6) [%eval -2,17] [%emt 0:01:06] 39.Rxb5 [%eval 54,20] [%emt 0:03:51] 39...Qc6 (Qa7+) [%eval 0,18] [%emt 0:01:41] 40.Rb4 (Ra5) [%eval 54,19] [%emt 0:03:51] 40...g5 (Bd7) [%eval 0,17] [%emt 0:00:53] 41.g4 (Qf6) [%eval 54,15] [%emt 0:03:00] 41...Bd7 [%eval 0,17] [%emt 0:02:44] 42.Rb8 (Qd4) [%eval 58,17] [%emt 0:03:00] 42...Bc8 [%eval 0,18] [%emt 0:02:45] 43.Qf2 [%eval 58,17] [%emt 0:03:00] 43...Be6 (Kg7) [%eval 0,18] [%emt 0:03:57] 44.Qd4 [%eval 59,17] [%emt 0:03:00] 44...f5 (Bc8) [%eval 0,17] [%emt 0:02:38] 45.Qa7+ (gxf5) [%eval 47,16] [%emt 0:03:29] 45...Kg6 [%eval 0,18] [%emt 0:02:53] 46.gxf5+ [%eval 47,17] [%emt 0:02:58] 46...Kxf5 [%eval 0,18] [%emt 0:04:45] 47.Qf2+ (Qh7+) [%eval 42,17] [%emt 0:02:58] 47...Kg6 [%eval 0,19] [%emt 0:06:32] 48.Rb6 (Qe3) [%eval 42,18] [%emt 0:02:58] 48...Qc1+ [%eval 0,18] [%emt 0:02:21] 49.Kg2 [%eval 42,19] [%emt 0:02:58] 49...Qc8 [%eval 0,18] [%emt 0:03:06] 50.Rd6 (Qe3) [%eval 35,17] [%emt 0:02:58] 50...Kg7 (h5) [%eval 0,18] [%emt 0:04:15] 51.Qe3 (Qd4+) [%eval 36,17] [%emt 0:02:58] 51...Kf6 (Kf7) [%eval 0,17] [%emt 0:02:24] 52.Kg1 [%eval 46,18] [%emt 0:02:58] 52...h5 (Kf7) [%eval 0,18] [%emt 0:02:13] 53.Rb6 (h4) [%eval 45,17] [%emt 0:02:58] 53...h4 (Kf7) [%eval 0,18] [%emt 0:03:54] 54.Kh1 (Qf3+) [%eval 67,17] [%emt 0:02:58] 54...Qd7 [%eval 0,17] [%emt 0:02:28] 55.Qc5 (Kg1) [%eval 70,17] [%emt 0:02:58] 55...Ke5 (Kg7) [%eval 0,17] [%emt 0:01:51] 56.Kg1 (Qe3+) [%eval 84,17] [%emt 0:02:58] 56...Qc8 [%eval 30,17] [%emt 0:02:48] 57.Rc6 (Qd6+) [%eval 81,18] [%emt 0:02:58] 57...Qe8 (Qd7) [%eval 52,17] [%emt 0:04:47] 58.Qe3+ [%eval 143,17] [%emt 0:02:58] 58...Kf5 [%eval 67,17] [%emt 0:02:24] 59.Qf3+ [%eval 146,17] [%emt 0:02:58] 59...Ke5 [%eval 67,16] [%emt 0:01:06] 60.Rc2 (Rc1) [%eval 146,17] [%emt 0:02:59] 60...Kd6 (Qd8) [%eval 56,14] [%emt 0:00:18] 61.Qe3 [%eval 147,16] [%emt 0:00:45] 61...Qb5 (Qd8) [%eval 70,16] [%emt 0:01:22] 62.Re2 [%eval 136,15] [%emt 0:00:42] 62...Qb1+ [%eval 82,16] [%emt 0:01:17] 63.Re1 [%eval 136,17] [%emt 0:00:42] 63...Qg6 [%eval 82,16] [%emt 0:01:14] 64.Qb6+ [%eval 137,16] [%emt 0:00:42] 64...Ke7 [%eval 110,16] [%emt 0:02:08] 65.Re2 (Qc5+) [%eval 130,15] [%emt 0:00:41] 65...Qf6 [%eval 95,15] [%emt 0:00:50] 66.Qb7+ [%eval 138,15] [%emt 0:00:40] 66...Ke8 [%eval 95,16] [%emt 0:01:26] 67.Qxd5 [%eval 117,16] [%emt 0:01:09] 67...Kf7 [%eval 74,17] [%emt 0:00:39] 68.Qb5 [%eval 109,15] [%emt 0:00:37] 68...Bf5 (Kg6) [%eval 80,16] [%emt 0:00:37] 69.Rf2 (Qe8+) [%eval 121,16] [%emt 0:00:36] 69...Kg6 [%eval 73,17] [%emt 0:00:33] 70.Qe8+ (Qd5) [%eval 113,17] [%emt 0:00:35] 70...Kh6 (Kg7) [%eval 41,17] [%emt 0:00:29] 71.Qe3 [%eval 113,17] [%emt 0:00:34] 71...Kg6 (Kh5) [%eval 43,17] [%emt 0:00:34] 72.Rd2 [%eval 110,16] [%emt 0:00:34] 72...Qa1+ (Qe6) [%eval 51,16] [%emt 0:00:51] 73.Kh2 (Kg2) [%eval 113,17] [%emt 0:00:33] 73...Qf6 [%eval 51,17] [%emt 0:00:52] 74.Rd4 (Rd1) [%eval 114,16] [%emt 0:00:32] 74...Qc6 [%eval 0,16] [%emt 0:00:26] 75.Rb4 [%eval 112,15] [%emt 0:00:31] 75...Kh5 (Qd6+) [%eval 0,16] [%emt 0:00:23] 76.Kg1 [%eval 113,16] [%emt 0:00:30] 76...Bxh3 (Qd6) [%eval 0,17] [%emt 0:00:26] 77.Qxh3 [%eval 0,20] [%emt 0:02:44] 77...Qc5+ [%eval 0,17] [%emt 0:00:14] 78.Kh2 (Kg2) [%eval 0,23] [%emt 0:00:25] 78...Qc7+ [%eval 0,17] [%emt 0:00:11] 79.Kh1 [%eval 0,25] [%emt 0:00:25] 79...Qc1+ [%eval 0,18] [%emt 0:00:19] 80.Kh2 (Kg2) [%eval 0,25] [%emt 0:00:24] 80...Qc7+ [%eval 0,18] [%emt 0:00:11] 81.Kh1 [%eval 0,31] [%emt 0:00:24] 81...Qc1+ Draw accepted [%eval 0,19] [%emt 0:00:25] ½-½


Sayonara

[Dann Corbit]

For the most part, the eval seems to be dropping, just like the IBM team saw for Deep Blue. Of course, that does not really show anything yet.

Code: Select all

Analysis from E:\axb5.epd   
1/9/2008 3:27:13 AM Level: 3600 Seconds
Analyzing engine: Rybkav2.3.2a.w32

1) axb5; am Qb6;        
    Searching move: a4xb5, Qf2-b6
    Best move (Rybkav2.3.2a.w32): Qf2-b6
    identical moves! Found in: 00:01
      5	00:01	       2.207	6.869	+1.30	Qf2b6 Bd6c7
      6	00:01	       4.518	10.937	+1.18	Qf2b6 Bd6c7 Qb6e6+ Qe8xe6
      7	00:01	       6.546	14.764	+1.15	Qf2b6 Bd6c7 Qb6e6+ Qe8xe6 f5xe6 Ra8b8
      8	00:01	       9.244	18.309	+1.20	Qf2b6 Bd6c7 Qb6e6+ Qe8xe6 f5xe6 Ra8b8 a4xb5 a6xb5 g2g4
      9	00:01	      14.527	24.386	+1.24	Qf2b6 Bd6c7 Qb6e6+ Qe8xe6 f5xe6 Ra8b8 a4xb5 a6xb5 Kg1f2 Kg8f8
     10	00:01	      26.833	32.517	+1.18	Qf2b6 Bd6c7 Qb6e6+ Qe8xe6 f5xe6 Ra8b8 a4xb5 a6xb5 Kg1f2 Kg8f8 Kf2f3
     11	00:03	      88.656	34.783	+1.33	Qf2b6 Rc8d8 Bc2e4 Bd6e7 a4xb5 Rd8d6 Qb6a5 Be7d8
     12	00:04	     113.462	37.358	+1.33	Qf2b6 Rc8d8 Bc2e4 Bd6e7 a4xb5 Rd8d6 Qb6a5 Be7d8 Qa5a4
     13	00:06	     251.373	44.038	+1.47	Qf2b6 Rc8d8 Bc2e4 Ra8c8 Qb6xa6 b5xa4 Qa6xa4 Qe8h5 Qa4a7 Qh5g5 Qa7f2
     14	00:09	     371.900	43.285	+1.46	Qf2b6 Rc8d8 Bc2e4 Ra8c8 Qb6xa6 b5xa4 Qa6xa4 Qe8h5 Qa4a7 Qh5g5 Qa7f2 Rc8c7
     15	00:20	     945.245	49.634	+1.46	Qf2b6 Qe8f8 a4xb5 Ra8b8 Qb6xa6 Qf8d8 Bc2e4 Rb8b6 Qa6a4 Bd6c7 Kg1h2 Qd8d7 Qa4c2
     16	00:30	   1.488.940	51.902	+1.40	Qf2b6 Qe8f8 a4xb5 a6a5 Ra2xa5 Ra8b8 Qb6f2 Bd6c7 Ra5a6 Rb8xb5 Bc2e4 Qf8d8 Qf2e2 Bc7b6+
     17	01:12	   3.542.318	50.686	+1.15	Qf2b6 Qe8e7 a4xb5 Ra8b8 Qb6xa6 e5e4 Qa6a7 Qe7e5 Qa7e3 Rc8e8 b5b6 Qe5xf5 Bc2a4 Bd6f4
     18	01:40	   5.205.178	53.754	+1.08	Qf2b6 Qe8e7 a4xb5 Ra8b8 Qb6xa6 e5e4 Qa6a7 Qe7e5 Qa7e3 Rc8e8 b5b6 Qe5xf5 Bc2a4 Re8d8
     19	02:23	   7.585.109	54.321	+1.12	Qf2b6 Qe8e7 a4xb5 Ra8b8 Qb6xa6 e5e4 Qa6a7 Qe7e5 Qa7e3 Rc8e8 b5b6 Qe5xf5 Bc2a4 Re8d8
     20	03:38	  11.331.412	53.371	+1.16	Qf2b6 Qe8e7 a4xb5 Ra8b8 Qb6xa6 e5e4 Qa6a7 Qe7e5 Qa7e3 Rc8e8 b5b6 Qe5xf5 Bc2a4 Re8d8
     21	05:50	  17.598.270	51.505	+1.16	Qf2b6 Qe8e7 a4xb5 Ra8b8 Qb6xa6 e5e4 Qa6a7 Qe7e5 Qa7e3 Rc8e8 b5b6 Qe5xf5 Bc2a4 Re8d8
     22	11:36	  38.941.565	57.307	+0.98	Qf2b6 Qe8e7 a4xb5 Ra8b8 Qb6xa6 e5e4 Qa6a7 Qe7e5 Qa7e3 Bd6c7 Qe3xe4 Qe5xc3 d5d6 Bc7b6+
     23	21:36	  76.256.211	60.278	+1.01	Qf2b6 Qe8e7 a4xb5 Ra8b8 Qb6xa6 e5e4 Qa6a7 Bd6c7 Ra2a6 Qe7e5 b5b6 Bc7d6 b6b7 Rc8e8
     24	35:51	 124.667.111	59.361	+1.05	Qf2b6 Qe8e7 a4xb5 Ra8b8 Qb6xa6 e5e4 Qa6a7 Bd6c7 Ra2a6 Qe7e5 b5b6 Bc7d6 b6b7 Rc8e8
     25	55:05	 188.933.425	58.544	+1.08	Qf2b6 Qe8e7 a4xb5 Ra8b8 Qb6xa6 e5e4 Qa6a7 Bd6c7 Ra2a6 Qe7e5 b5b6 Bc7d6 b6b7 Rc8e8
   1/9/2008 4:27:18 AM, Time for this analysis: 01:00:01, Rated time: 00:01

1 of 1 matching moves
1/9/2008 4:27:19 AM, Total time: 1:00:05 AM
Rated time: 00:01 = 1 Seconds

--------------------------------------------------------------------------------

Analysis from E:\axb5.epd   
1/9/2008 3:27:13 AM Level: 385 Seconds
Analyzing engine: Hiarcs11.2SPUCI

1) axb5; am Qb6;        
    Searching move: a4xb5, Qf2-b6
    Best move (Hiarcs11.2SPUCI): Qf2-b6
    identical moves! Found in: 00:01
    10/23	00:01	      69.360	126.569	+1.50	Qf2b6 Rc8d8 a4xb5 Ra8b8 Qb6xa6 e5e4 b5b6 e4e3 Qa6xc4 Rb8xb6
    10/23	00:01	     115.690	160.680	+1.56	Qf2b6 Rc8d8 a4xb5 Ra8b8 Qb6xa6 e5e4 Qa6c6 Qe8e5 Qc6xc4 Rd8e8 Ra2a6
    11/23-	00:02	     172.257	180.562	+1.31	Qf2b6
    11/23	00:02	     264.394	214.084	+1.31	Qf2b6 Rc8d8 Bc2e4 Bd6e7 a4xb5 Rd8d6 Qb6e3 Qe8xb5 Ra2a5 Qb5b6 Qe3c5 Ra8b8
    12/27	00:03	     582.680	243.595	+1.13	Qf2b6 Rc8d8 Bc2e4 Ra8b8 Qb6xa6 Qe8h5 a4xb5 Qh5h4 Ra2e2 Qh4g3 Ra1a3 Qg3f4
    13/29	00:09	   1.996.732	244.787	+1.36	Qf2b6 Qe8e7 a4xb5 Ra8b8 Qb6xa6 e5e4 Ra1e1
    14/29-	00:14	   3.479.242	255.338	+1.11	Qf2b6
    14/29	00:15	   3.860.351	259.501	+1.11	Qf2b6 Rc8d8 Bc2e4 Ra8c8 Qb6xa6 b5xa4 Qa6xa4
    15/34	00:25	   6.504.734	267.706	+1.07	Qf2b6 Rc8d8 Bc2e4 Ra8b8 Qb6xa6 Qe8h5 Kg1h2 Qh5g5 Ra1e1 g7g6
    16/38+	00:47	  12.422.081	267.135	+1.32	Qf2b6
    16/38	00:49	  12.912.352	267.347	+1.32	Qf2b6 Rc8d8 Bc2e4 Ra8b8 Qb6xa6 Qe8h5 a4xb5 Qh5h4 Ra2e2 Qh4g3 Be4f3 Bd6c7 Qa6e6+ Kg8h7 Qe6f7
    17/39	01:27	  23.431.557	269.955	+1.45	Qf2b6 Rc8d8 Bc2e4 Ra8b8 Qb6xa6 Qe8h5 a4xb5 Qh5h4 Ra2e2 Qh4g3 Be4f3 Qg3g5 Kg1h1 Qg5xf5 Re2e4 Qf5d7 b5b6 Qd7b7
    18/43-	03:04	  48.412.260	263.982	+1.20	Qf2b6
    18/43	03:24	  53.635.547	263.301	+1.20	Qf2b6 Qe8e7 a4xb5 Ra8b8 Qb6xa6 e5e4 Ra1e1 Qe7e5 Re1xe4 Qe5h2+ Kg1f1 Bd6g3 Qa6a7 Rb8a8 Re4xc4 Rc8e8 Bc2e4 Ra8xa7 Ra2xa7 Qh2h1+
    19/43-	06:25	  97.363.441	253.271	+0.95	Qf2b6
    19/43	09:08	 136.679.236	249.763	+0.85	Qf2b6 Qe8e7 a4xb5 Ra8b8 Qb6xa6 e5e4 Qa6a7 Qe7e5 Qa7e3 Rc8e8 b5b6 Qe5xf5 Bc2a4 Re8f8 Ra1e1 Qf5e5 Qe3xe4 Qe5xc3 Ba4c2 f6f5 Qe4e6+
    20/46	15:46	 233.449.282	246.868	+0.84	Qf2b6 Qe8e7 a4xb5 Ra8b8 Qb6xa6 e5e4 Qa6a7 Qe7e5 Qa7e3 Rc8e8 b5b6 Qe5xf5 Bc2a4 Re8f8 Ra1e1 Qf5e5 Qe3xe4 Qe5xc3 Ba4c2 f6f5 Qe4e6+ Kg8h8
    21/47	37:36	 557.791.406	247.352	+0.64	Qf2b6 Qe8e7 a4xb5 Ra8b8 Qb6xa6 e5e4 Qa6a7 Qe7e5 Qa7e3 Rc8e8 b5b6 Qe5xf5 Bc2a4 Re8f8 Ba4c6 Qf5e5 Kg1f2 f6f5
   1/9/2008 5:27:40 AM, Time for this analysis: 01:00:01, Rated time: 00:01

1 of 1 matching moves
1/9/2008 5:27:42 AM, Total time: 2:00:28 AM
Rated time: 00:01 = 1 Seconds

--------------------------------------------------------------------------------

Analysis from E:\axb5.epd   
1/9/2008 3:27:13 AM Level: 385 Seconds
Analyzing engine: ChessTiger2007UCI

1) axb5; am Qb6;        
    Searching move: a4xb5, Qf2-b6
    Best move (ChessTiger2007UCI): Qf2-b6
    identical moves! Found in: 00:02
      2	00:02	         141	0	-0.56	a4xb5 a6xb5 Ra2xa8 Rc8xa8 Ra1xa8
      3	00:02	         316	15.800	-0.62	a4xb5 a6xb5 Bc2e4 Ra8xa2 Ra1xa2
      4	00:02	         600	30.000	-0.62	a4xb5 a6xb5 Bc2e4 Ra8xa2 Ra1xa2
      4	00:02	       1.042	52.100	+0.28	Qf2b6 Bd6c7 Qb6e6+ Qe8xe6 d5xe6
      4	00:02	       1.544	77.200	+0.30	Qf2b6 Rc8d8 a4xb5 Ra8b8 Qb6xa6 Rb8xb5
      5	00:02	       3.159	157.950	+0.52	Qf2b6 Bd6c7 Qb6e6+ Qe8xe6 f5xe6
      6	00:02	       4.791	239.550	+0.42	Qf2b6 Rc8d8 a4xb5 Ra8b8 Qb6xa6 Rb8xb5 Bc2e4
      7	00:02	      11.522	384.067	+0.06	Qf2b6 Qe8e7 a4xb5 Rc8b8 Qb6e3 Rb8xb5 Bc2e4
      8	00:02	      23.813	476.260	+0.46	Qf2b6 Bd6c7 Qb6e6+ Kg8h7 Qe6xe8 Bc7b6+ Kg1f1 Rc8xe8 a4xb5
      9	00:02	      43.033	537.913	+0.76	Qf2b6 Rc8d8 a4xb5 Ra8b8 Qb6xa6 Qe8xb5 Bc2e4 Rd8d7 Qa6xb5 Rb8xb5 Ra2a8+ Kg8f7
     10	00:02	      68.749	528.838	+0.92	Qf2b6 Rc8d8 a4xb5 Ra8b8 Qb6xa6 Qe8xb5 Bc2e4 Rd8d7 Qa6xb5 Rb8xb5 Ra2a8+ Kg8f7
     11	00:03	     121.106	550.482	+1.00	Qf2b6 Rc8d8 a4xb5 Ra8b8 Qb6xa6 Qe8xb5 Bc2e4 Rd8d7 Qa6xb5 Rb8xb5 Ra2a8+ Rb5b8 Ra8a5
     12	00:03	     223.765	545.768	+1.12	Qf2b6 Rc8d8 a4xb5 Ra8b8 Qb6xa6 Qe8xb5 Bc2e4 Rd8d7 Ra2a5 Qb5xa6 Ra5xa6 Rb8b5 g2g4
     13	00:03	     395.771	573.581	+1.01	Qf2b6 Rc8d8 a4xb5 Ra8b8 Qb6xa6 Qe8xb5 Bc2e4 Bd6c7 Qa6e6+ Kg8f8 Ra2a6 Rd8e8 Qe6c6 Bc7b6+ Kg1f1 Qb5xc6
     14	00:04	     750.348	564.171	+1.05	Qf2b6 Rc8d8 a4xb5 Ra8b8 Qb6xa6 Qe8xb5 Bc2e4 Bd6c7 Qa6e6+ Kg8f8 Ra2a6 Rd8e8 Qe6c6 Rb8b6 Qc6xb5 Rb6xb5
     15	00:05	   1.467.551	601.455	+1.02	Qf2b6 Rc8d8 a4xb5 Ra8b8 Qb6xa6 Qe8xb5 Bc2e4 Bd6c7 Qa6e6+ Kg8f8 Qe6c6 Rd8d7 Qc6xb5 Rb8xb5 Ra2a7
     16	00:07	   3.024.422	644.866	+0.51	Qf2b6 Rc8d8 a4xb5 a6xb5 Ra2xa8 Rd8xa8 Ra1xa8 Qe8xa8 Qb6xd6 Qa8a1+ Kg1h2 Qa1c1 Qd6b8+ Kg8h7 Bc2e4 Qc1f4+ g2g3 Qf4xe4
     17	00:11	   5.930.190	661.114	+0.51	Qf2b6 Rc8d8 a4xb5 a6xb5 Ra2xa8 Rd8xa8 Ra1xa8 Qe8xa8 Qb6xd6 Qa8a1+ Kg1h2 Qa1c1 Qd6b8+ Kg8h7 Bc2e4 Qc1f4+ g2g3 Qf4xe4 Qb8xb5
     18	00:20	  11.958.794	681.413	+0.42	Qf2b6 Rc8d8 a4xb5 a6xb5 Ra2xa8 Rd8xa8 Ra1xa8 Qe8xa8 Qb6xd6 Qa8a1+ Kg1h2 Qa1c1 Qd6b8+ Kg8h7 Qb8xb5 Qc1f4+ Kh2g1 Qf4c1+ Bc2d1 Qc1xd1+ Kg1h2 Qd1d3
     19	00:45	  28.877.444	672.037	+0.87	Qf2b6 Rc8d8 Bc2e4 Bd6e7 a4xb5 Rd8d6 Qb6f2 Be7d8 Ra2xa6 Bd8b6 Ra6xa8 Bb6xf2+ Kg1xf2 Rd6d8 d5d6 Qe8d7 Ra8xd8+ Qd7xd8 Ra1a8
     20	01:04	  40.888.026	665.495	+0.86	Qf2b6 Rc8d8 Bc2e4 Bd6e7 a4xb5 Rd8d6 Qb6f2 Qe8xb5 Qf2c5 Qb5d7 Qc5xc4 Ra8c8 Qc4d3 Qd7c7 Ra2c2 Qc7c4 Ra1a5 Rc8c7 g2g4
     21	01:33	  60.561.921	667.643	+0.89	Qf2b6 Rc8d8 Bc2e4 Bd6e7 a4xb5 Rd8d6 Qb6f2 Qe8xb5 Qf2c5 Qb5b7 Qc5xc4 Be7d8 Qc4d3 Ra8c8 Ra2xa6 Rc8xc3 Qd3xc3
     22	02:53	 116.826.585	682.797	+0.91	Qf2b6 Rc8d8 Bc2e4 Bd6e7 a4xb5 Rd8d6 Qb6a5 Be7d8 Qa5a4 a6a5 Kg1f1 Qe8d7 b5b6 Bd8xb6 Qa4xd7 Rd6xd7 b4xa5 Bb6c5 Ra2a4 Rd7a7 d5d6
     23	04:14	 173.731.999	689.905	+0.94	Qf2b6 Rc8d8 Bc2e4 Bd6e7 a4xb5 Rd8d6 Qb6a5 Be7d8 Qa5a4 a6a5 Kg1f1 Bd8c7 b5b6 Bc7xb6 Qa4xe8+ Ra8xe8 b4xa5 Bb6a7 Ra2a4 Re8c8
     24	07:43	 323.942.847	703.383	+1.00	Qf2b6 Rc8d8 Bc2e4 Bd6e7 a4xb5 Rd8d6 Qb6a5 Be7d8 Qa5a4 a6a5 Kg1f1 Bd8c7 b5b6 Bc7xb6 Qa4xe8+ Ra8xe8 b4xa5 Bb6a7 Ra2a4 Re8c8
     25	13:57	 609.906.692	730.436	+0.96	Qf2b6 Rc8d8 Bc2e4 Bd6e7 a4xb5 Rd8d6 Qb6a5 Be7d8 Qa5a4 a6a5 Kg1f1 Bd8c7 b5b6 Bc7xb6 Qa4xe8+ Ra8xe8 b4xa5 Bb6e3 Ra2a4 Re8c8 a5a6
     26	30:25	1.393.067.387	764.435	+0.81	Qf2b6 Rc8d8 Bc2e4 Bd6e7 a4xb5 Rd8d6 Qb6a5 Be7d8 Qa5a4 a6a5 Kg1f1 Qe8d7 b4xa5 Ra8xa5 Qa4xc4 Qd7xb5 Qc4xb5 Ra5xb5 c3c4 Rb5c5 Ra2a4
   1/9/2008 6:28:00 AM, Time for this analysis: 01:00:01, Rated time: 00:02

1 of 1 matching moves
1/9/2008 6:28:01 AM, Total time: 3:00:48 AM
Rated time: 00:02 = 2 Seconds

--------------------------------------------------------------------------------

Analysis from E:\axb5.epd   
1/9/2008 3:27:13 AM Level: 385 Seconds
Analyzing engine: Fruit-2-3-1

1) axb5; am Qb6;        
    Searching move: a4xb5, Qf2-b6
    Best move (Fruit-2-3-1): Qf2-b6
    identical moves! Found in: 00:01
      2	00:01	       4.387	0	+1.00	Qf2b6 Qe8d7 a4xb5
      3	00:01	       5.031	0	+1.23	Qf2b6 Qe8d7 a4xb5 Ra8b8
      4	00:01	       5.748	0	+1.19	Qf2b6 Qe8d7 a4xb5 Ra8b8 Qb6xa6 Rb8xb5
      5	00:01	       7.546	0	+0.96	Qf2b6 Qe8d7 a4xb5 Rc8b8 Qb6c6 Qd7a7+ Kg1h2
      6	00:01	      10.539	0	+0.94	Qf2b6 Qe8d7 a4xb5 Ra8b8 Qb6xa6 Rb8xb5 Bc2e4
      7	00:01	      21.641	0	+1.24	Qf2b6 Qe8d7 a4xb5 Ra8b8 Qb6xa6 Rb8xb5 Bc2e4 Rc8d8
      8	00:01	      44.320	0	+1.22	Qf2b6 Qe8f8 a4xb5 Rc8b8 Qb6c6 Rb8xb5 Ra2xa6 Ra8xa6 Ra1xa6
      9	00:01	     139.211	0	+1.78	Qf2b6 Bd6c7 Qb6e6+ Qe8xe6 f5xe6 Ra8b8 a4xb5 Rb8xb5 Bc2e4 Bc7b6+ Kg1h2 f6f5 Be4xf5 Rb5xd5 Ra2xa6
     10	00:01	     241.184	0	+1.78	Qf2b6 Bd6c7 Qb6e6+ Qe8xe6 f5xe6 Ra8b8 a4xb5 Rb8xb5 Bc2e4 Bc7b6+ Kg1h2 f6f5 Be4xf5 Rb5xd5 Ra2xa6
     11	00:01	     460.993	0	+1.73	Qf2b6 Rc8d8 a4xb5 Ra8b8 Qb6xa6 Qe8xb5 Qa6xb5 Rb8xb5 Ra2a8 Rd8f8 Ra8xf8+ Kg8xf8 Bc2e4 Rb5b7 Ra1a8+ Kf8f7
     12	00:02	     790.597	690.000	+1.90	Qf2b6 Rc8d8 a4xb5 Ra8b8 Qb6xa6 Bd6c7 Qa6c6 Qe8xc6 d5xc6 Rb8xb5 Ra2a8 Bc7b6+ Kg1h2 Rb5d5 Ra8xd8+ Rd5xd8
     13	00:02	   1.394.041	685.000	+1.46	Qf2b6 Rc8d8 a4xb5 Ra8b8 Qb6xa6 e5e4 Qa6c6 e4e3 Qc6xc4 Rd8c8 Qc4d3 Qe8e5 Ra2a7 Qe5h2+ Kg1f1 Qh2h1+ Kf1e2 Qh1xg2+ Ke2xe3
     14	00:04	   2.582.897	690.000	+1.29	Qf2b6 Rc8d8 a4xb5 Ra8b8 Qb6xa6 e5e4 Qa6c6 e4e3 Qc6xc4 Rd8c8 Qc4d4 e3e2 Bc2e4 Bd6e5 Qd4a7 Be5xc3
     15	00:06	   4.221.083	704.000	+1.31	Qf2b6 Rc8d8 a4xb5 Ra8b8 Qb6xa6 e5e4 b5b6 Qe8e5 Qa6xc4 Qe5h2+ Kg1f1 Qh2h1+ Kf1f2 e4e3+ Kf2f3 Qh1h2 Bc2e4 Rb8xb6 Kf3xe3
     16	00:13	   8.716.336	717.437	+1.28	Qf2b6 Rc8d8 a4xb5 Ra8b8 Qb6xa6 e5e4 b5b6 Qe8e5 Qa6xc4 Qe5h2+ Kg1f1 Qh2h1+ Kf1f2 e4e3+ Kf2f3 Qh1h2 Bc2e4 Rb8c8 Qc4d3 Bd6e5
     17	00:35	  24.829.660	715.524	+1.51	Qf2b6 Qe8e7 a4xb5 Ra8b8 Qb6xa6 e5e4 Ra1e1 e4e3 Bc2e4 Bd6xb4 Qa6e6+ Qe7xe6 f5xe6 Bb4xc3 Re1b1 Rc8c5 b5b6 f6f5 Be4f3 f5f4 b6b7
     18	00:54	  37.976.076	711.958	+1.48	Qf2b6 Qe8e7 a4xb5 Ra8b8 Qb6xa6 e5e4 Ra1e1 e4e3 Bc2e4 Bd6xb4 Qa6e6+ Qe7xe6 f5xe6 Bb4xc3 Re1b1 Bc3d4 Kg1f1 Bd4c5 Kf1e2 Rc8d8 g2g3
     19	01:42	  72.138.805	708.782	+1.36	Qf2b6 Qe8e7 a4xb5 Ra8b8 Qb6xa6 e5e4 Ra1e1 e4e3 Bc2e4 Bd6xb4 Qa6e6+ Qe7xe6 f5xe6 Bb4xc3 Re1b1 f6f5 Be4xf5 Rc8c5 e6e7 Kg8f7 Ra2a3 Bc3e5 Ra3xe3 Rc5xd5
     20	04:08	 176.918.216	715.852	+1.17	Qf2b6 Qe8e7 a4xb5 Ra8b8 Qb6xa6 e5e4 Ra1e1 e4e3 Bc2e4 Bd6xb4 Qa6e6+ Qe7xe6 f5xe6 Bb4xc3 Re1b1 Rc8d8 Ra2c2 Bc3a5 g2g3 f6f5 Be4f3 c4c3 b5b6 Rb8xb6 Rb1xb6 Ba5xb6 Rc2xc3
     21	08:47	 377.468.157	717.488	+1.16	Qf2b6 Qe8e7 a4xb5 Ra8b8 Qb6xa6 e5e4 Ra1e1 e4e3 Bc2e4 Bd6xb4 c3xb4 Qe7xe4 Qa6e6+ Qe4xe6 f5xe6 Rb8xb5 d5d6 Rb5e5 e6e7 Rc8b8 Ra2e2 Kg8f7 Re2xe3 Re5xe3 Re1xe3 Kf7e8 Re3g3
     22	13:47	 592.837.159	717.556	+1.30	Qf2b6 Qe8e7 a4xb5 Ra8b8 Qb6xa6 e5e4 Ra1e1 e4e3 Qa6a7 Rc8e8 Qa7xe7 Re8xe7 Ra2a6 Bd6g3 Re1e2 Rb8d8 b5b6 Rd8xd5 Ra6a7 Re7e8 b6b7 Bg3b8 Ra7a5 Rd5d2 Re2xd2 e3xd2
     23	27:51	1.187.985.468	711.224	+0.97	Qf2b6 Qe8e7 a4xb5 Ra8b8 Qb6xa6 e5e4 Ra1e1 e4e3 Qa6a7 Qe7xa7 Ra2xa7 Rc8e8 b5b6 Bd6e5 Ra7a3 Be5g3 Re1e2 Rb8xb6 Ra3a5 Re8e7 Kg1f1 Kg8f7 Ra5a8 Rb6b8 Ra8xb8 Bg3xb8
     24	58:45	2.531.033,653	718.109	+1.09	Qf2b6 Qe8e7 a4xb5 Ra8b8 Qb6xa6 e5e4 Qa6a7 Qe7e5 Qa7e3 Rc8e8 b5b6 Qe5xf5 Bc2a4 Re8f8 Ba4c6 Qf5e5 Ra2a7 Qe5h2+ Kg1f1 f6f5 Bc6b5 Bd6f4 Qe3c5 Qh2h1+ Qc5g1 Qh1xg1+ Kf1xg1 Bf4e3+ Kg1f1 Be3xb6
   1/9/2008 7:28:21 AM, Time for this analysis: 01:00:01, Rated time: 00:01

1 of 1 matching moves
1/9/2008 7:28:23 AM, Total time: 4:01:09 AM
Rated time: 00:01 = 1 Seconds

--------------------------------------------------------------------------------

Analysis from E:\axb5.epd   
1/9/2008 3:27:13 AM Level: 385 Seconds
Analyzing engine: Gandalf60

1) axb5; am Qb6;        
    Searching move: a4xb5, Qf2-b6
    Best move (Gandalf60): Qf2-b6
    identical moves! Found in: 00:02
     6/17	00:02	      22.532	112.660	+1.08	Qf2b6 Qe8d7 a4xb5 Rc8b8 Qb6c6 Qd7a7+ Kg1h2
     7/23	00:02	      55.398	184.660	+1.37	Qf2b6 Qe8f8 a4xb5 Rc8b8 Qb6c6 Rb8c8 Qc6d7
     8/23+	00:02	     146.457	292.914	+1.88	Qf2b6 Qe8f8
     8/26	00:02	     243.942	348.488	+2.17	Qf2b6 Bd6c7 Qb6e6+ Kg8h7 Qe6xe8 Rc8xe8 a4xb5 Ra8d8 b5xa6 Bc7b6+ Kg1f1 Rd8xd5
     9/29	00:02	     351.546	351.546	+2.17	Qf2b6 Bd6c7 Qb6e6+ Kg8h7 Qe6xe8 Rc8xe8 a4xb5 Ra8d8 b5xa6 Bc7b6+ Kg1f1 Rd8xd5
    10/31	00:04	     803.353	321.341	+1.95	Qf2b6 Rc8d8 a4xb5 a6xb5 Ra2xa8 Rd8xa8 Ra1xa8 Qe8xa8 Qb6xd6 Qa8a1+ Kg1h2 Qa1xc3 Bc2e4 Qc3d4 Qd6d8+ Kg8h7
    11/34	00:05	   1.207.405	377.314	+1.88	Qf2b6 Rc8d8 a4xb5 a6xb5 Ra2xa8 Rd8xa8 Ra1xa8 Qe8xa8 Qb6xd6 Qa8a1+ Kg1h2 Qa1c1 Qd6b8+ Kg8h7 Qb8xb5 Qc1f4+ Kh2g1 Qf4c1+ Bc2d1 Qc1xd1+ Kg1h2
    12/34	00:06	   1.934.225	394.739	+1.88	Qf2b6 Rc8d8 a4xb5 a6xb5 Ra2xa8 Rd8xa8 Ra1xa8 Qe8xa8 Qb6xd6 Qa8a1+ Kg1h2 Qa1c1 Qd6b8+ Kg8h7 Qb8xb5 Qc1f4+ Kh2g1 Qf4c1+ Bc2d1 Qc1xd1+ Kg1h2
    13/35	00:09	   3.318.596	436.657	+1.69	Qf2b6 Rc8d8 a4xb5 a6xb5 Ra2xa8 Rd8xa8 Ra1xa8 Qe8xa8 Qb6xd6 Qa8a1+ Kg1h2 Qa1c1 Qd6b8+ Kg8h7 Qb8xb5 Qc1f4+ Kh2g1 Qf4c1+ Bc2d1 Qc1xd1+ Kg1h2 Qd1d3
    14/40	00:24	  10.522.294	469.745	+1.88	Qf2b6 Rc8d8 Bc2e4 Kg8h7 Kg1h2 Qe8f8 a4xb5 Rd8b8 Qb6a5 Rb8xb5 Qa5xb5 a6xb5 Ra2xa8 Bd6b8 Ra8a5 Qf8e8
    15/43	00:40	  18.375.812	471.174	+1.95	Qf2b6 Rc8d8 Bc2e4 Kg8h7 Kg1h2 Qe8f8 a4xb5 Rd8b8 Qb6a5 Rb8xb5 Qa5xb5 a6xb5 Ra2xa8 Bd6b8 Ra8a5 Qf8e8 Ra5a6
    16/46	01:18	  36.254.749	476.409	+2.04	Qf2b6 Rc8d8 Bc2e4 Ra8b8 Qb6xa6 Qe8h5 a4xb5 Qh5h4 Ra2e2 Qh4g3 Be4f3 Bd6c7 Qa6e6+ Kg8h8 Ra1a6 Rb8xb5 d5d6 Bc7b6+ Kg1h1
    17/49	03:15	  95.608.547	492.827	+2.20	Qf2b6 Rc8d8 Bc2e4 Bd6e7 a4xb5 Rd8d6 Qb6a5 Be7d8 Qa5a4 a6a5 b4xa5 Bd8xa5 Kg1h2 Kg8h7 g2g3 Qe8c8 Qa4c2 Qc8d8
    18/51-	07:22	 210.554.469	477.550	+1.72	Qf2b6 Rc8d8 Bc2e4 Bd6e7 a4xb5 Rd8d6 Qb6a5 Be7d8 Qa5a4 a6a5 b4xa5 Bd8xa5 Kg1h2 Kg8h7 g2g3 Qe8c8 Qa4c2 Qc8d8
    18/53	10:39	 298.018.422	467.479	+1.34	Qf2b6 Qe8e7 a4xb5 Ra8b8 Qb6xa6 e5e4 Bc2xe4 Qe7e5 Be4f3 Rc8d8 Ra2a3 Qe5e3+ Kg1f1 Qe3d3+ Bf3e2 Qd3xf5+ Be2f3 Qf5d3+
    19/57	20:36	 572.130.945	115.577	+1.34	Qf2b6 Qe8e7 a4xb5 Ra8b8 Qb6xa6 e5e4 Bc2xe4 Qe7e5 Be4f3 Rc8d8 Ra2a3 Qe5e3+ Kg1f1 Qe3d3+ Bf3e2 Qd3xf5+ Be2f3 Qf5d3+
    20/57	29:55	 831.546.403	224.157	+1.47	Qf2b6 Qe8e7 a4xb5 Ra8b8 Qb6xa6 e5e4 Bc2xe4 Qe7e5 Be4f3 Rc8d8 Qa6a3 Qe5e3+ Kg1f1 Qe3d3+ Ra2e2 Bd6e5 Bf3e4 Qd3xc3 Qa3xc3 Be5xc3 Ra1c1 Bc3xb4 b5b6 Kg8f8
   1/9/2008 8:28:46 AM, Time for this analysis: 01:00:01, Rated time: 00:02

1 of 1 matching moves
1/9/2008 8:28:47 AM, Total time: 5:01:33 AM
Rated time: 00:02 = 2 Seconds

--------------------------------------------------------------------------------

Analysis from E:\axb5.epd   
1/9/2008 3:27:13 AM Level: 385 Seconds
Analyzing engine: Ktulu_75

1) axb5; am Qb6;        
    Searching move: a4xb5, Qf2-b6
    Best move (Ktulu_75): Qf2-b6
    identical moves! Found in: 00:00
      6	00:00	      19.891	1.989.100	+1.72	Qf2b6 Qe8d7 a4xb5 Rc8b8 Qb6c6 Qd7xc6
      7	00:00	      43.455	1.448.500	+1.67	Qf2b6 Qe8d7 a4xb5 Rc8b8 Qb6c6 Qd7xc6 b5xc6 Rb8b6 g2g4 g7g5
      8	00:00	     111.438	1.013.072	+1.44	Qf2b6 Bd6c7 Qb6e6+ Qe8xe6 f5xe6 Ra8b8 a4xb5 a6xb5 Kg1f1 Kg8f8 Ra2a7 g7g5
      9	00:00	     220.807	960.030	+1.58	Qf2b6 Bd6c7 Qb6e6+ Qe8xe6 f5xe6 Ra8b8 a4xb5 a6xb5 Kg1f1 Bc7d6 g2g4 Bd6f8 Ra1c1 Bf8d6
     10	00:00	     485.910	916.811	+1.54	Qf2b6 Bd6c7 Qb6e6+ Qe8xe6 f5xe6 Ra8b8 a4xb5 a6xb5 g2g4 Kg8f8 Ra2a7 Kf8e7 h3h4 h6h5
     11	00:01	   1.420.551	959.831	+1.72	Qf2b6 Bd6c7 Qb6e6+ Qe8xe6 f5xe6 Ra8b8 a4xb5 a6xb5 Bc2g6 Kg8f8 Ra2a7 Bc7b6+ Kg1h2 Bb6c7 Kh2h1 e5e4 Bg6xe4
     12	00:03	   3.452.623	925.636	+1.86	Qf2b6 Rc8d8 a4xb5 Ra8b8 Qb6xa6 Qe8xb5 Bc2e4 Qb5b6+ Qa6xb6 Rb8xb6 Ra2a8 Rd8b8 Ra8a5 Rb6b5 Ra5a6
     13	00:10	   9.605.639	919.199	+1.67	Qf2b6 Bd6f8 Qb6e6+ Qe8xe6 f5xe6 Ra8b8 a4xb5 Rb8xb5 Ra2a5 Rb5xa5 Ra1xa5 Rc8a8 b4b5 Bf8c5+ Kg1f1 e5e4 Bc2xe4
     14	00:18	  16.324.884	903.924	+1.87	Qf2b6 Rc8d8 a4xb5 Ra8b8 Qb6xa6 Qe8xb5 Bc2e4 Bd6c7 Qa6xb5 Rb8xb5 Kg1f1 Kg8h7 Ra2a6 Bc7b6 g2g3 h6h5 Ra1a2 Kh7h6 Kf1e1
     15	00:32	  29.647.420	922.446	+1.93	Qf2b6 Rc8d8 a4xb5 Ra8b8 Qb6xa6 Qe8xb5 Bc2e4 Bd6c7 Qa6e6+ Kg8f8 Ra2a6 Rd8e8 Qe6c6 Bc7b6+ Kg1h2 Qb5xc6 d5xc6 Bb6c7 Ra6a7 Re8e7 g2g4 Bc7b6 Ra7a2 Bb6c7 Ra1b1
     16	01:09	  66.295.572	951.428	+2.04	Qf2b6 Rc8d8 a4xb5 Ra8b8 Qb6xa6 Qe8xb5 Bc2e4 Qb5b6+ Qa6xb6 Rb8xb6 Ra2a8 Rd8b8 Ra1a6 Bd6c7 Ra8xb8+ Bc7xb8 Ra6xb6 Bb8a7 d5d6 Ba7xb6+ Kg1f1 Kg8f7 Be4d5+ Kf7f8 g2g4 Kf8e8
     17	02:26	 141.691.479	966.253	+2.07	Qf2b6 Rc8d8 Bc2e4 Ra8b8 Qb6xa6 Bd6c7 a4xb5 Qe8xb5 Qa6e6+
     18	04:52	 283.761.771	969.827	+2.13	Qf2b6 Rc8d8 Bc2e4 Ra8b8 Qb6xa6 Bd6c7 a4xb5 Qe8xb5 Qa6xb5 Rb8xb5 Ra2a8 Rd8xa8 Ra1xa8+ Rb5b8 Ra8a6 Rb8b6 Ra6a7 Bc7b8 Ra7a5 Rb6b7
     19	10:06	 587.162.225	968.499	+2.25	Qf2b6 Rc8d8 Bc2e4 Ra8b8 Qb6xa6 Bd6c7 a4xb5 Rb8xb5 Kg1h1 Rd8d6 Qa6a4 Rb5b8 Qa4d1 Bc7b6 Qd1g4 Rb8c8 Ra2a6 Qe8b5 Ra1a5 Qb5d7 Ra5a2 Rc8d8 Qg4g6 Qd7b5 g2g4 Rd6xd5 Be4xd5+ Qb5xd5+ Kh1h2
     20	18:33	1.082.588.680	972.449	+2.18	Qf2b6 Rc8d8 Bc2e4 Ra8b8 Qb6xa6 Bd6c7 a4xb5 Rd8d6 Qa6a4 Rb8xb5 Qa4d1 Rb5b8 Kg1h1 Bc7b6
     21-	47:37	1.543.631.035	973.454	+1.88	Qf2b6
   1/9/2008 9:28:56 AM, Time for this analysis: 01:00:01, Rated time: 00:00

1 of 1 matching moves
1/9/2008 9:28:57 AM, Total time: 6:01:43 AM
Rated time: 00:00 = 0 Seconds

--------------------------------------------------------------------------------

Analysis from E:\axb5.epd   
1/9/2008 3:27:13 AM Level: 385 Seconds
Analyzing engine: Prodeo 1.6

1) axb5; am Qb6;        
    Searching move: a4xb5, Qf2-b6
    Best move (Prodeo 1.6): Qf2-b6
    identical moves! Found in: 00:00
      2	00:00	         302	302	+0.31	a4xb5 Qe8xb5 Bc2e4
      3	00:00	       1.135	1.135	+0.39	a4xb5 Qe8xb5 Ra2a5 Qb5b7
      4	00:00	       2.654	2.654	+0.35	a4xb5 a6xb5 Ra2a7 Ra8xa7 Ra1xa7 Rc8c7
      4	00:00	       4.338	4.338	+0.35	Qf2b6
      4	00:00	       4.897	4.897	+0.59	Qf2b6 Bd6c7 Qb6e6+ Qe8xe6 d5xe6
      5	00:00	      10.276	10.276	+0.53	Qf2b6 Bd6c7 Qb6e6+ Qe8xe6 d5xe6 Bc7b6+ Kg1h2
      6	00:00	      27.847	27.847	+0.81	Qf2b6 Bd6c7 Qb6e6+ Kg8h7 a4xb5 Qe8xb5 Ra1d1 Bc7b6+ Kg1h2
      7	00:00	      64.131	64.131	+0.77	Qf2b6 Bd6c7 Qb6e6+ Kg8h7 Qe6xe8 Rc8xe8 a4xb5 Bc7b6+ Kg1h2
      8	00:00	     256.148	256.148	+1.41	Qf2b6 Rc8d8 a4xb5 Ra8b8 Qb6xa6 Qe8xb5 Qa6xb5 Rb8xb5 Ra2a5
      9	00:00	     525.731	525.731	+1.49	Qf2b6 Bd6c7 Qb6e6+ Qe8xe6 f5xe6 Rc8b8 a4xb5 Rb8xb5 Bc2e4 f6f5 Be4xf5 Bc7b6+ Kg1h2 Rb5xd5 Ra2xa6
     10	00:01	   1.216.312	1.216.312	+1.55	Qf2b6 Rc8d8 a4xb5 Ra8b8 Qb6xa6 Qe8xb5 Ra2a5 Qb5xa6 Ra5xa6 Bd6c7 Ra1d1
     11	00:02	   2.454.042	1.227.021	+1.51	Qf2b6 Rc8d8 a4xb5 a6xb5 Ra2xa8 Rd8xa8 Ra1xa8 Qe8xa8 Qb6xd6 Qa8a1+ Kg1h2 Qa1xc3 Bc2b1 Kg8h7
     12	00:04	   5.718.183	1.270.707	+1.11	Qf2b6 Rc8d8 Bc2e4 Bd6e7 Qb6c6 Rd8d6 Qc6xe8+ Ra8xe8 a4xb5 a6xb5 Ra2a7 Rd6d8
     13	00:11	  15.162.250	1.347.755	+1.09	Qf2b6 Rc8d8 Bc2e4 Bd6e7 Qb6e6+ Kg8h7 Qe6c6 Rd8d6 Qc6xe8 Ra8xe8 a4xb5 a6xb5 Ra2a7
     14	00:30	  41.657.834	1.388.594	+1.10	Qf2b6 Rc8d8 Bc2e4 Bd6e7 a4xb5 Rd8d6 Qb6a5 Be7d8 Qa5a4 Bd8b6+ Kg1h2 a6a5 g2g3
     15	01:09	  98.947.004	1.434.014	+1.14	Qf2b6 Rc8d8 Bc2e4 Bd6e7 a4xb5 Rd8d6 Qb6a5 Be7d8 Qa5a4 Bd8b6+ Kg1h2 a6a5 g2g3
     16	03:16	 283.868.697	1.440.957	+1.14	Qf2b6 Rc8d8 Bc2e4 Bd6e7 a4xb5 Rd8d6 Qb6a5 Be7d8 Qa5a4 Bd8b6+ Kg1h2 a6a5
     17	12:00	1.053.592.744	1.463.323	+1.44	Qf2b6 Rc8d8 Bc2e4 Bd6e7 a4xb5 Rd8d6 Qb6a5 Be7d8 Qa5a4 a6a5 Kg1h2 Qe8d7
     18	32:35	1.384.610.236	-5.225	+1.44	Qf2b6 Rc8d8 Bc2e4 Bd6e7 a4xb5 Rd8d6 Qb6a5
   1/9/2008 10:29:06 AM, Time for this analysis: 01:00:01, Rated time: 00:00

1 of 1 matching moves
1/9/2008 10:29:08 AM, Total time: 7:01:54 AM
Rated time: 00:00 = 0 Seconds

--------------------------------------------------------------------------------

Analysis from E:\axb5.epd   
1/9/2008 3:27:13 AM Level: 385 Seconds
Analyzing engine: Shredder9UCI

1) axb5; am Qb6;        
    Searching move: a4xb5, Qf2-b6
    Best move (Shredder9UCI): Qf2-b6
    identical moves! Found in: 00:00
     2/8+	00:00	         163	186	+0.41	Qf2g3
     2/8	00:00	         231	264	+0.42	Qf2g3 Rc8d8
     3/5	00:00	         677	773	+0.42	Qf2g3 Rc8d8 a4xb5
     4/10	00:00	       2.036	2.326	+0.58	Qf2g3 Rc8d8 Bc2e4 Qe8f8
     5/13	00:00	       4.672	5.249	+0.42	Qf2g3 Bd6c7 Bc2e4 Bc7b6+ Kg1h2 Rc8d8
     5/13+	00:00	       6.346	7.130	+0.43	Qf2e3
     5/13	00:00	       8.664	9.562	+0.58	Qf2e3 Bd6e7 a4xb5 a6xb5 Ra2a6 Ra8xa6
     5/13+	00:00	      10.169	11.224	+0.59	Qf2b6
     5/14	00:00	      12.170	13.432	+0.92	Qf2b6 Bd6b8 Kg1f1 Bb8c7 Qb6e6+ Qe8xe6
     6/14	00:00	      20.709	22.460	+1.08	Qf2b6 Qe8e7 a4xb5 Ra8b8 Qb6xa6 e5e4
     7/17+	00:00	      35.565	37.318	+1.33	Qf2b6 Qe8e7
     7/17	00:01	      59.356	59.356	+1.61	Qf2b6 Qe8d7
     8/17	00:01	      96.351	89.379	+1.69	Qf2b6 Rc8d8 a4xb5 Ra8b8 Qb6xa6 Qe8xb5
     9/19-	00:01	     110.931	98.605	+1.44	Qf2b6 Rc8d8
     9/19	00:01	     152.125	126.454	+1.39	Qf2b6 Rc8d8 a4xb5 Ra8b8 Qb6xa6 e5e4 Qa6c6 e4e3 Qc6xe8+ Rd8xe8
    10/20+	00:01	     243.330	176.967	+1.64	Qf2b6 Rc8d8
    10/20	00:01	     343.233	219.739	+1.86	Qf2b6 Rc8d8 a4xb5 Ra8b8 Qb6xa6 e5e4 b5b6 Qe8e5 Qa6xc4 Qe5h2+ Kg1f1 Qh2f4+ Kf1e1
    11/23	00:02	     676.494	305.001	+1.62	Qf2b6 Rc8d8 Bc2e4 Bd6e7
    12/30	00:02	   1.062.396	357.950	+1.51	Qf2b6 Rc8d8 a4xb5 Ra8b8 Qb6xa6 e5e4 Ra1e1 Qe8e5 Re1xe4 Qe5xc3 Qa6c6
    13/33	00:04	   1.971.361	417.838	+1.63	Qf2b6 Rc8d8 a4xb5 Ra8b8 Qb6xa6 e5e4 b5b6 Qe8e5 Qa6xc4 Qe5h2+ Kg1f1 Qh2f4+ Kf1e2 Qf4xf5 Ra2a7 Qf5h5+ Ke2f1 Qh5f5+ Kf1g1 Rd8e8
    14/33	00:09	   4.271.434	451.860	+1.72	Qf2b6 Rc8d8 Bc2e4 Ra8b8 Qb6xa6 Qe8h5 a4xb5 Qh5h4 Ra2e2 Qh4g3 Be4f3 Qg3f4 b5b6 Qf4xf5 Qa6a7
    15/34	00:15	   7.745.091	485.038	+1.85	Qf2b6 Rc8d8 Bc2e4 Ra8c8 Qb6xa6 b5xa4 Qa6xa4 Qe8h5 Qa4a7 Qh5g5 Ra1e1 Rd8e8 Ra2e2
    16/45	00:29	  14.853.895	512.486	+1.75	Qf2b6 Rc8d8 Bc2e4 Ra8c8 Qb6xa6 b5xa4 Qa6xa4 Qe8h5 Qa4a7 Qh5g5 Ra1e1 Rd8e8 Qa7e3 Qg5xe3+ Re1xe3 Rc8a8 Ra2xa8
    17/47	00:56	  30.048.044	527.741	+1.80	Qf2b6 Qe8e7 a4xb5 Ra8b8 Qb6xa6 e5e4 Ra1e1 Qe7d8 Bc2b1 Rb8a8 Qa6b7 Ra8b8 Qb7a7 Bd6c7 Kg1f1 Bc7b6 Qa7a4 Qd8xd5 Bb1xe4 Qd5e5 Ra2a3
    18/41	01:29	  47.031.702	526.323	+1.70	Qf2b6 Qe8e7 a4xb5 Ra8b8 Qb6xa6 e5e4 Qa6a7 Bd6c7 Ra2a6 Qe7d8 d5d6 Bc7b6+ Ra6xb6 Qd8xb6+ Qa7xb6 Rb8xb6 Ra1a6 Rb6xb5 Bc2xe4 Rc8d8
    19/54	03:19	 106.402.595	533.012	+1.90	Qf2b6 Rc8d8 Bc2e4 Kg8h7 Kg1h2 Qe8f8 a4xb5 Rd8b8 Qb6a5 a6xb5 Qa5xa8 Rb8xa8 Ra2xa8 Qf8f7 Ra1a6
    20/46-	05:33	 177.508.781	532.335	+1.65	Qf2b6 Rc8d8
    20/46	06:34	 208.727.357	529.408	+1.37	Qf2b6 Qe8e7 a4xb5 Ra8b8 Qb6xa6 e5e4 Ra1e1 Qe7d8 Ra2a1 Rb8a8 Qa6b7 Ra8b8 Qb7a7 Bd6c7 Kg1h1 Qd8xd5
    21/49-	10:28	 325.653.579	518.453	+1.12	Qf2b6 Qe8e7
    21/50	15:21	 470.974.914	511.365	+1.12	Qf2b6 Qe8e7 a4xb5 Ra8b8 Qb6xa6
    22/59	25:30	 773.426.271	505.419	+1.14	Qf2b6 Qe8e7 a4xb5 Ra8b8 Qb6xa6 e5e4 Qa6a7 Qe7e5 Qa7e3 Rc8e8 b5b6 Qe5xf5 Bc2a4 Re8e7 Ba4c6 Qf5e5 Ra2a8 f6f5 Ra8xb8+ Bd6xb8 Ra1a8 Qe5h2+ Kg1f2
    23/62	41:00	1.232.038.052	500.787	+1.10	Qf2b6 Qe8e7 a4xb5 Ra8b8 Qb6xa6 e5e4 Qa6a7 Qe7e5 Qa7e3 Rc8e8 b5b6 Qe5xf5 Bc2a4 Re8e7 Ba4c6 Qf5e5 Ra2a8 f6f5 Ra8xb8+ Bd6xb8 Ra1a8 f5f4 Qe3d4
   1/9/2008 11:29:24 AM, Time for this analysis: 01:00:00, Rated time: 00:00

1 of 1 matching moves
1/9/2008 11:29:25 AM, Total time: 8:02:12 AM
Rated time: 00:00 = 0 Seconds

--------------------------------------------------------------------------------

Analysis from E:\axb5.epd   
1/9/2008 3:27:13 AM Level: 385 Seconds
Analyzing engine: TogaIIv3.1.2SE_P4_SSE2

1) axb5; am Qb6;        
    Searching move: a4xb5, Qf2-b6
    Best move (TogaIIv3.1.2SE_P4_SSE2): Qf2-b6
    identical moves! Found in: 00:00
     2/10	00:00	         400	0	+0.84	a4xb5 Qe8xb5 Ra2a5
     2/12+	00:00	         903	0	+1.10	Qf2b6 Kg8f7
     3/12	00:00	       1.385	0	+0.93	Qf2b6 Bd6c7 Qb6e6+ Qe8xe6 f5xe6 Bc7b6+ Kg1h2
     4/13	00:00	       2.614	0	+0.93	Qf2b6 Bd6c7 Qb6e6+ Qe8xe6 f5xe6 Bc7b6+ Kg1h2
     5/16	00:00	       7.305	0	+1.24	Qf2b6 Qe8d7 a4xb5 Rc8b8 Qb6c6
     6/16	00:00	      12.038	0	+1.36	Qf2b6 Qe8d7 a4xb5 Rc8b8 Qb6c6 Qd7a7+ Kg1h2
     7/16	00:00	      26.284	0	+1.27	Qf2b6 Qe8d7 a4xb5 Ra8b8 Qb6xa6 Rb8xb5 Bc2e4
     8/23	00:00	     117.035	0	+1.65	Qf2b6 Bd6c7 Qb6e6+ Qe8xe6 f5xe6 Ra8b8 Kg1f2 Rb8b7 a4xb5 Bc7b6+ Kf2g3 a6xb5
     9/23	00:01	     189.846	0	+1.60	Qf2b6 Bd6c7 Qb6e6+ Qe8xe6 f5xe6 Ra8b8 Kg1f2 Rc8d8 a4xb5 a6xb5 Bc2e4 Bc7b6+ Kf2g3 Rb8b7
    10/26	00:01	     351.946	0	+1.53	Qf2b6 Bd6c7 Qb6e6+ Qe8xe6 f5xe6 Ra8b8 a4xb5 a6xb5 Bc2e4 Rc8d8 Kg1f2 Bc7b6+ Kf2g3 Kg8f8 Ra1f1
    11/26	00:01	     646.364	0	+1.57	Qf2b6 Bd6c7 Qb6e6+ Qe8xe6 f5xe6 Ra8b8 a4xb5 a6xb5 Bc2e4 Rc8d8 g2g4 Bc7b6+ Kg1h2 Kg8f8 Kh2g3 Kf8e7
    12/36	00:05	   2.992.380	695.000	+1.71	Qf2b6 Rc8d8 Bc2e4 b5xa4 Ra2xa4 Ra8b8 Qb6xa6 Rb8c8 Qa6a7 Kg8h8 Qa7e3 Rd8d7 Ra4a7 Rc8b8 Ra7xd7 Qe8xd7
    13/36	00:06	   4.209.261	700.000	+1.61	Qf2b6 Rc8d8 Bc2e4 Bd6e7 a4xb5 Rd8d6 Qb6a5 Be7d8 Qa5a4 a6a5 Kg1h2 Ra8b8 b4xa5 Rb8xb5 Qa4xc4
    14/36	00:08	   5.439.852	704.286	+1.60	Qf2b6 Rc8d8 Bc2e4 Bd6e7 a4xb5 Rd8d6 Qb6a5 Be7d8 Qa5a4 Qe8h5 Kg1h2 Qh5g5 Ra2e2 Qg5h5 g2g4
    15/47	00:24	  16.672.254	706.087	+1.76	Qf2b6 Rc8d8 Bc2e4 Ra8c8 Qb6xa6 b5xa4 Qa6xa4 Qe8h5 Qa4a7 Qh5e8 Qa7e3 Rd8d7 Ra2a7 h6h5 Ra7xd7 Qe8xd7 Ra1a7 Rc8c7 Ra7a8+ Rc7c8 Ra8xc8+ Qd7xc8
    16/48	00:43	  30.732.946	715.952	+1.70	Qf2b6 Qe8f8 a4xb5 a6a5 Ra2xa5 Ra8b8 Qb6e3 Bd6c7 Ra5a6 Rb8xb5 Bc2e4 Rc8b8 Qe3e2 Bc7b6+ Kg1h2 Rb8c8 g2g3 Kg8h7 Qe2g4 Kh7h8
    17/56-	03:24	 142.973.193	700.730	+0.91	Qf2b6 Qe8e7 a4xb5 Ra8b8 Qb6xa6 e5e4 Qa6a7 Qe7e5 Qa7e3 Rc8e8 b5b6 Qe5h2+ Kg1f1 Bd6f4 Qe3g1 Qh2g3 Qg1f2 Qg3g5 Ra2a7 Qg5xf5 g2g4 Qf5g5
    18/56	04:25	 186.764.442	705.788	+1.10	Qf2b6 Qe8e7 a4xb5 Ra8b8 Qb6xa6 e5e4 Qa6a7 Qe7e5 Qa7e3 Rc8e8 b5b6 Qe5h2+ Kg1f1 Bd6f4 Qe3g1 Qh2g3 Qg1f2 Qg3h2 Bc2d1 e4e3 Qf2g1 Qh2g3 Bd1h5 Re8e7
    19/56	07:07	 302.211.938	708.232	+0.88	Qf2b6 Qe8e7 a4xb5 Ra8b8 Qb6xa6 e5e4 Qa6a7 Qe7e5 Qa7e3 Rc8e8 b5b6 Qe5h2+ Kg1f1 Bd6f4 Qe3g1 Qh2g3 Qg1f2 Qg3h2 Bc2d1 e4e3 Qf2g1 Qh2g3 Bd1h5 Re8e5 Ra2a7 Rb8xb6
    20/62	16:44	 724.849.132	722.218	+0.92	Qf2b6 Qe8e7 a4xb5 Ra8b8 Qb6xa6 e5e4 Qa6a7 Qe7e5 Qa7e3 Rc8e8 b5b6 Qe5h2+ Kg1f1 Bd6f4 Qe3g1 Qh2g3 Qg1f2 Qg3h2 Qf2d4 e4e3 Bc2e4 Bf4e5 Qd4xe3 Be5xc3 Qe3xc3 Re8xe4 Ra1e1 Re4f4+ Ra2f2 Qh2h1+ Kf1e2
    21/62	25:03	1.080.245.283	718.990	+0.83	Qf2b6 Qe8e7 a4xb5 Ra8b8 Qb6xa6 e5e4 Qa6a7 Qe7e5 Qa7e3 Rc8e8 b5b6 Qe5h2+ Kg1f1 Bd6f4 Qe3g1 Qh2g3 Qg1f2 Qg3h2 g2g3 Qh2xh3+ Qf2g2 Qh3xg3 Bc2xe4 Qg3xg2+ Be4xg2 Rb8xb6 Ra1e1 Kg8f8 Re1xe8+ Kf8xe8 Ra2a7
   1/9/2008 11:54:53 AM, Time for this analysis: 00:25:21, Rated time: 00:00

[Graham Banks]

I have found some positions that I consider to be purely positional full exchange sacs, and that some programs have no trouble seeing, thus I stand corrected

Hi Robin,

Dadi Jonsson has posted three more examples in the Rybka forum thread that I already gave a link to.
Not sure whether they'll meet your criteria or not because I've not had a chance to scrutinise them.

Regards, Graham.

[smirobth]

I have found some positions that I consider to be purely positional full exchange sacs, and that some programs have no trouble seeing, thus I stand corrected

Hi Robin,

Dadi Jonsson has posted three more examples in the Rybka forum thread that I already gave a link to.
Not sure whether they'll meet your criteria or not because I've not had a chance to scrutinise them.

Regards, Graham.

Hi Graham,
I just looked at the three examples provided by Jonsson. Yes, those meet the criteria I was talking about. When it comes to computer chess one should never say never, since things keep changing.

[Uri]

Computers are good but still they don't know chess or at least they don't play top quality positional chess like humans do. Computers are short-range "thinkers" while humans are excellent at long-range thinking. Humans are excellent pattern recognizers while computers are not. Humans are much better at positional (or strategical) chess while computers are much better at tactical chess.

[Ovyron]

Computers are good but still they don't know chess or at least they don't play top quality positional chess like humans do. Computers are short-range "thinkers" while humans are excellent at long-range thinking. Humans are excellent pattern recognizers while computers are not. Humans are much better at positional (or strategical) chess while computers are much better at tactical chess.

Wasn't it said that after Rybka, this is no longer true?