Winning score?

Discussion of anything and everything relating to chess playing software and machines.

Moderators: hgm, Rebel, chrisw

User avatar
David Dahlem
Posts: 900
Joined: Wed Mar 08, 2006 9:06 pm

Winning score?

Post by David Dahlem »

[D]2r3k1/6pp/3pp1P1/1pP5/1P6/P4R2/5K2/8 w - - 0 1

Interesting position, a "White to Win" study by Skuja & Giese. On my slow machine, Stockfish 1.6.3s takes almost 1-1/2 hours to show a winning score.

What's blacks best response to c6?

Stockfish 1.6.3s:

27 01:43 150.209.556 1.447.802 0.00 c5xd6 h7xg6 Rf3e3 Kg8f7 Re3e5 Rc8c3 Re5xb5 Rc3xa3 Rb5b7+ Kf7f6 b4b5 Ra3d3 d6d7 Kf6e7 d7d8N+ Ke7xd8 Rb7xg7 Rd3b3 Rg7xg6 Rb3xb5 Rg6g3 Kd8e7 Rg3d3 Rb5b8 Kf2e2 Ke7f6 Ke2f2 Kf6e7
27+ 05:00 393.253.849 1.308.665 +0.20 c5c6 e6e5 a3a4 Rc8xc6 Rf3f8+ Kg8xf8 g6xh7 Rc6c2+ Kf2g3
28+ 10:09 768.297.958 1.261.765 +1.01 c5c6 h7h6 Rf3c3
29 1:26:34 6.350.970,250 1.222.718 +4.12 c5c6 h7xg6 Rf3c3 d6d5 a3a4 b5xa4 b4b5 a4a3 Rc3xa3 Kg8f7 Ra3a7+ Kf7e8 Ra7xg7 Ke8f8 Rg7xg6 Kf8f7 Rg6h6 d5d4 c6c7 Kf7e7 b5b6 Ke7d7 Rh6xe6 Kd7xe6 b6b7 Rc8xc7 b7b8Q Rc7c3 Qb8f4 Ke6d5 Qf4f5+ Kd5d6 Kf2e2 Rc3e3+ Ke2d2 Re3c3 Qf5e4 Kd6c5 Qe4e5+ Kc5c4 Qe5d6 Rc3d3+ Kd2e2 Rd3c3 Qd6c6+ Kc4b4
Top
Paloma
Posts: 1167
Joined: Thu Dec 25, 2008 9:07 pm
Full name: Herbert L

Re: Winning score?

Post by Paloma »

Hi David,

how slow is your machine? :-) I know you used a 32-bit OS you mentioned somewhere here, but i don't Ghz and Hash size.
I have 2Core at 3.0 GHz
Top
User avatar
David Dahlem
Posts: 900
Joined: Wed Mar 08, 2006 9:06 pm

Re: Winning score?

Post by David Dahlem »

Paloma wrote:Hi David,

how slow is your machine? :-) I know you used a 32-bit OS you mentioned somewhere here, but i don't Ghz and Hash size.
I have 2Core at 3.0 GHz
My machine is a Dual Intel Pentium D 3.00 GHz with 2048 MB. I was using 1024 mb hash on this position.
Top
Paloma
Posts: 1167
Joined: Thu Dec 25, 2008 9:07 pm
Full name: Herbert L

Re: Winning score?

Post by Paloma »

ah, thx
Top
mhalstern
Posts: 484
Joined: Wed Nov 18, 2009 1:09 am

Re: Winning score?

Post by mhalstern »

Zappa Mexico II I7-920 2.67 ghz 2 gig of hash

New game
2r3k1/6pp/3pp1P1/1pP5/1P6/P4R2/5K2/8 w - - 0 1

Analysis by Zappa Mexico II 64:

1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rd3 Kg6 4.Kf3 Kf5 5.d7 Kf6 6.Ke4
+/= (0.27) Depth: 13/27 00:00:00 1539kN
1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rd3 Kg6 4.Kf3 Kf5 5.d7 Kf6 6.Ke4
+/= (0.27) Depth: 13/29 00:00:01 2781kN
1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rd3 Kg6 4.Kf3 Kf5 5.d7 Kf6 6.Ke4 Ke7 7.Rg3 Kxd7 8.Rxg7+ Kc6 9.Rg5 Rd2
= (0.14) Depth: 14/32 00:00:01 4752kN, tb=2
1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rd3 Kg6 4.Kf3 Kf5 5.d7 Kf6 6.Ke4 Ke7 7.Rg3 Kxd7 8.Rxg7+ Kc6 9.Rg5 Rd2
= (0.14) Depth: 14/32 00:00:02 7624kN, tb=5
1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rd3 Kg6 4.Kf3 Kf5 5.d7 Kf6 6.Ke4 Ke7 7.Rg3 Kxd7 8.Rxg7+ Kc6 9.Rg5 Rd2
= (0.14) Depth: 15/32 00:00:02 9617kN, tb=6
1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rd3 Kg6 4.Kf3 Kf5 5.d7 Kf6 6.Ke4 Ke7 7.Rg3 Kxd7 8.Rxg7+ Kc6 9.Rg5 Rd2
= (0.14) Depth: 15/32 00:00:03 11715kN, tb=6
1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rd3 Kg6 4.Kf3 Kf5 5.d7 Kf6 6.Ke4 Ke7 7.Rg3 Kxd7 8.Rxg7+ Kc6 9.Rg5 Rd2
= (0.14) Depth: 16/37 00:00:04 14374kN, tb=25
1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rd3 Kg6 4.Kf3 Kf5 5.d7 Kf6 6.Ke4 Ke7 7.Rg3 Kxd7 8.Rxg7+ Kc6 9.Rg5 Rd2
= (0.14) Depth: 16/37 00:00:05 20330kN, tb=32
1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rd3 Kg6 4.Kf3 Kf5 5.d7 Kf6 6.Ke4 Ke7 7.Rg3 Kxd7 8.Rxg7+ Kc6 9.Rg5 Rd2
= (0.14) Depth: 17/37 00:00:06 25625kN, tb=41
1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rd3 Kg6 4.Kf3 Kf5 5.d7 Kf6 6.Ke4 Ke7 7.Rg3 Kxd7 8.Rxg7+ Kc6 9.Rg5 Rd2
= (0.14) Depth: 17/53 00:00:10 37244kN, tb=55
1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rd3 Kg6 4.Kf3 Kf5 5.d7 Kf6 6.Kf4 Ke7 7.Rg3 Kxd7 8.Rxg7+ Kc6 9.Ke4 Rd1 10.Rg6
= (0.08) Depth: 18/53 00:00:13 53783kN, tb=99
1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rd3 Kg6 4.Kf3 Kf5 5.d7 Kf6 6.Kf4 Ke7 7.Rg3 Kxd7 8.Rxg7+ Kc6 9.Ke4 Rd1 10.Rg6
= (0.08) Depth: 18/53 00:00:18 79296kN, tb=133
1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rd3 Kg6 4.Kf3 Kf5 5.d7 Kf6 6.Kf4 Ke7 7.Rg3 Kxd7 8.Rxg7+ Kc6 9.Ke4 Rd1 10.Rg6 Ra1
= (0.07) Depth: 19/53 00:00:25 109mN, tb=287
1.c6 d5 2.a4 Rxc6 3.Rf8+ Kxf8 4.gxh7 Rc2+ 5.Kg3 Rc3+ 6.Kg4 Kf7 7.h8Q bxa4 8.Qh5+ Ke7 9.Qg5+ Kf7 10.b5 a3 11.Qf4+ Kg6 12.Qd2 Kf6 13.Qxc3+ Ke7 14.Qxg7+
+- (2.37) Depth: 19/57 00:01:32 370mN, tb=473
1.c6 d5 2.a4 Rxc6 3.Rf8+ Kxf8 4.gxh7 Rc2+ 5.Kg3 Rc3+ 6.Kg4 Kf7 7.h8Q bxa4 8.Qh5+ Ke7 9.Qg5+ Kf7 10.b5 a3 11.Qf4+ Kg6 12.Qd2 Kf6 13.Qxc3+ Ke7 14.Qxg7+
+- (2.37) Depth: 19/57 00:01:32 370mN, tb=473
1.c6 hxg6 2.Rc3 Kf8 3.a4 bxa4 4.b5 Ke7 5.b6 Kd8 6.Ke3 g5 7.b7 Kc7 8.bxc8N Kxc8 9.Ra3 Kc7 10.Rxa4 Kxc6 11.Rg4 Kc5 12.Ke4
+- (2.31) Depth: 20/59 00:03:57 878mN, tb=4051
1.c6 hxg6 2.Rc3 Kf8 3.a4 bxa4 4.b5 Ke7 5.b6 Kd8 6.Ke3 g5 7.b7 Kc7 8.bxc8N Kxc8 9.Ra3 Kc7 10.Rxa4 Kxc6 11.Rg4 Kc5 12.Ke4
+- (2.31) Depth: 20/59 00:04:06 910mN, tb=4121
1.c6 d5 2.a4 Rxc6 3.Rf8+ Kxf8 4.gxh7 Rc2+ 5.Kg3 Kf7 6.h8Q bxa4 7.Qh5+ Ke7 8.Qg5+ Kd7 9.b5 Rc3+ 10.Kf4 Rc4+ 11.Ke3 g6 12.Qf6 e5 13.Qg7+ Kd6 14.b6 Kc6 15.Qc7+ Kb5 16.Qa7 Rc3+
+- (3.32) Depth: 21/61 00:08:40 1919mN, tb=7690
1.c6 d5 2.a4 Rxc6 3.Rf8+ Kxf8 4.gxh7 Rc2+ 5.Kg3 Kf7 6.h8Q bxa4 7.Qh5+ Ke7 8.Qg5+ Kd7 9.b5 Rc3+ 10.Kf4 Rc4+ 11.Ke3 g6 12.Qf6 e5 13.Qg7+ Kd6 14.b6 Kc6 15.Qc7+ Kb5 16.Qa7 Rc3+
+- (3.32) Depth: 21/61 00:08:51 1956mN, tb=7717
Top
mhalstern
Posts: 484
Joined: Wed Nov 18, 2009 1:09 am

Re: Winning score?

Post by mhalstern »

Deep Sjeng WC 2008

New game
2r3k1/6pp/3pp1P1/1pP5/1P6/P4R2/5K2/8 w - - 0 1

Analysis by Deep Sjeng WC2008 x64:

1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rd3 Kg6 4.Kg3 e5 5.Kg4 Kf6 6.Rf3+ Ke6
+/= (0.51) Depth: 6/18 00:00:00 21kN
1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rd3 Kg6 4.Kg3 Kf5 5.d7 e5 6.Rf3+ Ke6
+/= (0.59) Depth: 7/18 00:00:00 29kN
1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rd3 Kg6 4.Kg3 Kf5 5.d7 e5 6.Rf3+ Ke6
+/= (0.61) Depth: 8/21 00:00:00 46kN
1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rd3 Kg6 4.Ke3 Kf5 5.Rd2 Rd7 6.Rd1 g5 7.Rf1+ Ke5
+/= (0.57) Depth: 9/22 00:00:00 86kN
1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rd3 Kg6 4.Ke3 Kf5 5.Rd2 e5 6.d7 Ke6 7.Ke4 Rxd7 8.Rxd7 Kxd7 9.Kxe5 g5
+/= (0.56) Depth: 10/25 00:00:00 159kN
1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rd3 Kg6 4.Ke3 Kf5 5.Rd1 e5 6.Rd5 g5 7.Rd2 Ke6
+/= (0.43) Depth: 11/25 00:00:00 296kN
1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rd3 Kg6 4.Ke3 Kf5 5.d7 e5 6.Rd6 g5 7.Kf3 g4+ 8.Kf2 e4
= (0.14) Depth: 12/26 00:00:00 548kN
1.cxd6 hxg6 2.Rd3 g5 3.Ke3 Kf7 4.Ke4 Rd8 5.Ke5 g4 6.Rg3 g5 7.Rxg4
+/= (0.60) Depth: 12/27 00:00:00 714kN
1.cxd6 hxg6 2.Rd3 Kf7 3.Ke3 Kf6 4.Kf4 e5+ 5.Ke4 Ke6 6.d7 Rd8 7.Rd5 Rxd7 8.Rxe5+ Kf6 9.Rxb5
+/= (0.32) Depth: 13/28 00:00:00 899kN
1.cxd6 hxg6 2.Rd3 Kf7 3.Ke3 Kf6 4.Kf4 e5+ 5.Ke4 Ke6 6.d7 Rd8 7.Rd5 Rxd7 8.Rxe5+ Kf6 9.Rxb5
+/= (0.32) Depth: 14/28 00:00:00 1191kN
1.cxd6 hxg6 2.Rd3 Kf7 3.Ke3 Kf6 4.Ke4 Rc4+ 5.Rd4 Rxd4+ 6.Kxd4 e5+ 7.Kd5 g5 8.d7 Ke7 9.Kxe5 g6 10.d8R Kxd8
= (0.15) Depth: 15/29 00:00:00 2283kN, tb=4
1.cxd6 hxg6 2.Rd3 Kf7 3.Ke3 Kf6 4.Ke4 Rc4+ 5.Kf3 Rc8 6.Rd2 Kf5 7.d7 Rd8
= (0.15) Depth: 16/31 00:00:00 3945kN, tb=6
1.cxd6 hxg6 2.Rd3 Kf7 3.Ke3 Kf6 4.Ke4 Rc4+ 5.Kf3 Rc8 6.Rd2 Kf5 7.d7 Rd8
= (0.11) Depth: 17/32 00:00:01 7374kN, tb=38
1.cxd6 hxg6 2.Rd3 Kf7 3.Ke3 Kf6 4.Ke4 Rc4+ 5.Kf3 Rc8 6.Rd2 Kf5 7.d7 Rd8
= (0.08) Depth: 18/44 00:00:03 21111kN, tb=294
1.cxd6 hxg6 2.Rd3 Kf7 3.Ke3 Rh8 4.Kd4 Rh5 5.Ke4 Kf6 6.Rf3+ Rf5 7.d7 Ke7 8.Rg3 Kxd7 9.Rxg6 Rf7
= (0.00) Depth: 19/44 00:00:09 64760kN, tb=1248
1.cxd6 hxg6 2.Rd3 Kf7 3.Ke3 Rh8 4.Kd4 Rh5 5.Ke4 Kf6 6.a4 bxa4 7.b5 Rh4+ 8.Ke3 Rh3+ 9.Ke4 Rh4+
= (0.00) Depth: 20/49 00:00:18 110mN, tb=5003
1.cxd6 hxg6 2.Rd3 Kf7 3.Ke3 Rh8 4.Kd4 Rh5 5.Ke4 Kf6 6.a4 bxa4 7.b5 Rh4+ 8.Ke3 Rh3+ 9.Ke4 Rh4+
= (0.00) Depth: 21/49 00:00:27 159mN, tb=7939
1.cxd6 hxg6 2.Rd3 Kf7 3.Ke3 Rh8 4.Kd4 Rh5 5.Ke4 Kf6 6.a4 bxa4 7.b5 Rh4+ 8.Ke3 Rh3+ 9.Ke4 Rh4+
= (0.00) Depth: 22/51 00:00:46 243mN, tb=17899
1.cxd6 hxg6 2.Rd3 Kf7 3.Ke3 Rh8 4.Kd4 Rh5 5.Ke4 Kf6 6.a4 bxa4 7.b5 Rh4+ 8.Ke3 a3 9.Rd2 Ke5 10.d7 Rh3+ 11.Ke2 Rh2+ 12.Ke3 Rxd2 13.Kxd2 a2 14.d8Q a1Q 15.Qc7+ Kd4 16.b6 Qa2+ 17.Ke1
= (-0.01) Depth: 23/52 00:01:49 631mN, tb=43620
1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rd3 Kg6 4.Ke3 Kf5 5.d7 g5 6.Kf3 e5 7.Rd5 g4+ 8.Kg3 Ke4 9.Rd1 Kf5 10.Rd5
= (0.00) Depth: 23/53 00:02:44 903mN, tb=109017
1.c6
+/= (0.30 !) Depth: 23/60 00:03:32 1175mN, tb=123206
1.c6 hxg6 2.Rc3 d5 3.a4 bxa4 4.b5 a3 5.Rxa3 Kf7 6.Ra7+ Kf6 7.c7 Ke7 8.b6 Kd6 9.Ke3 Rf8 10.Rb7 Kd7 11.Rb8 Rc8 12.b7 Rxc7 13.Rd8+ Kxd8 14.b8Q+ Kd7
+- (1.43) Depth: 23/61 00:04:30 1504mN, tb=127108
1.c6 hxg6 2.Rc3 d5 3.a4 bxa4 4.b5 a3 5.Rxa3 Kf7 6.Ra7+ Kf6 7.c7 Ke5 8.b6 Rf8+ 9.Ke3 Kd6 10.Rb7 Kd7 11.Rb8 Rc8 12.b7 Rxc7 13.Rd8+ Kxd8 14.b8Q+ Kd7 15.Kd3
+/- (1.36) Depth: 24/61 00:05:15 1764mN, tb=129663
1.c6
+- (1.66 !) Depth: 25/61 00:08:35 2873mN, tb=172031
1.c6 h5 2.Rc3 d5 3.c7 d4 4.Rc5 Kf8 5.a4 Ke7 6.axb5 Rf8+ 7.Ke2 Kd7 8.b6 Kc8 9.Rxh5 Kb7 10.Rc5 Rc8 11.Rb5 e5 12.Kd3 Re8 13.Ke4 Rh8 14.Rc5
+- (2.35) Depth: 25/61 00:15:16 5076mN, tb=224196

Top
mhalstern
Posts: 484
Joined: Wed Nov 18, 2009 1:09 am

Re: Winning score?

Post by mhalstern »

I left gaviota Running for 46 hours to see if it could find a winning score. I finally sees some positive value for c6 after 31 hours with +/= (0.40) after 20 ply. I was going to let it run for a few more days to get another ply or 2, but I accidentally clicked somewhere in the Fritz GUI, causing the search to be started over. Ahhhhhh!!!!!!!!!!!

I am running the Gaviota 0.74.12 64 - The 64 bit Version on my I7-920 2.67 ghz. I was hoping for a better score as I like supporing Gaviota, because of Miguel's Tablebase Work. I'll past the eval, then the Gaviota Log File.

I have a few questions for Miguel:


Also, why does the eval show the same 1406mN searched from ply 18 through ply 20? The log file clearly shows more positions searched with each additional ply.

Also, the final eval, with the score of (0.40), only shows c6 as the starting move. Why dosen't it show the rest of the line it is considering?

As an observation, I know tfrom thje faq, that Gaviota does not use a full 100% cpu, even though it is mpu, however, during the long search, there were many instances (I never checked for more than 2 or 3 minutes of a time) of only 25% usage. I Know that the cores = 4 line in gaaviota.ini.txt works, as I sometimes saw 70% cpu. usage.

I also wonder, have I set a word record for the most plies reached by gaviota?

Eval paste:

New game
2r3k1/6pp/3pp1P1/1pP5/1P6/P4R2/5K2/8 w - - 0 1

Analysis by gaviota64.exe:

1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rh3+ Kg6 4.Rd3 Rf8+ 5.Rf3 Rd8
+/- (0.99) Depth: 6 00:00:01 43kN
1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rh3+ Kg6 4.Rd3 Rf8+ 5.Rf3 Rd8
+/- (0.99) Depth: 6 00:00:01 47kN
1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rd3 Rd7 4.Ke3 g5 5.Ke4
+/- (1.01) Depth: 7 00:00:01 106kN
1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rd3 Rd7 4.Ke3 g5 5.Ke4
+/- (1.01) Depth: 7 00:00:01 121kN
1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rh3+ Kg6 4.Rd3 Kf7 5.Ke2 Ke8 6.Rd1
+/- (0.93) Depth: 8 00:00:01 292kN
1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rh3+ Kg6 4.Rd3 Kf7 5.Ke2 Ke8 6.Rd1
+/- (0.93) Depth: 8 00:00:01 324kN
1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rd3 Rd7 4.Ke3 g5 5.Ke4 g4 6.Ke5
+/- (0.85) Depth: 9 00:00:01 725kN
1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rd3 Rd7 4.Ke3 g5 5.Ke4 g4 6.Ke5
+/- (0.85) Depth: 9 00:00:01 818kN
1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rd3 Kg6 4.Ke3 Kf5 5.Rd1 e5 6.Rd5 g5
+/= (0.52) Depth: 10 00:00:02 1710kN
1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rd3 Kg6 4.Ke3 Kf5 5.Rd1 e5 6.Rd5 g5
+/= (0.52) Depth: 10 00:00:02 2064kN
1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Kf6 4.Ke3 g5 5.Ke4 Rc4+ 6.Kf3 g4+ 7.Ke3 Rc8 8.d7 Rd8
+/- (0.79) Depth: 11 00:00:03 4737kN
1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Kf6 4.Ke3 g5 5.Ke4 Rc4+ 6.Kf3 g4+ 7.Ke3 Rc8 8.d7 Rd8
+/- (0.79) Depth: 11 00:00:03 5223kN
1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Kf6 4.Rd1 g5 5.Ke3 Rd8 6.Ke4 g4 7.Rf1+ Kg5 8.Ke5
+/= (0.57) Depth: 12 00:00:06 10705kN
1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Kf6 4.Rd1 g5 5.Ke3 Rd8 6.Ke4 g4 7.Rf1+ Kg5 8.Ke5
+/= (0.57) Depth: 12 00:00:06 12315kN
1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Rd8 4.Ke3 Kf5 5.Rd2 g5 6.Rd3 e5 7.Rd5 g4 8.d7 g3
+/= (0.48) Depth: 13 00:00:14 28863kN
1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Rd8 4.Ke3 Kf5 5.Rd2 g5 6.Rd3 e5 7.Rd5 g4 8.d7 g3
+/= (0.48) Depth: 13 00:00:17 34828kN
1.gxh7+
= (0.07) Depth: 14 00:00:33 71026kN
1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Rd8 4.Ke3 Kf5 5.d7 Kf6 6.Rd6 Kf7 7.Rb6 Ke7 8.a4 bxa4
= (0.03) Depth: 14 00:01:15 153mN
1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Rd8 4.Ke3 Kf5 5.d7 Kf6 6.Rd6 Kf7 7.Rb6 Ke7 8.a4 bxa4
= (0.03) Depth: 14 00:01:19 163mN
1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Rd8 4.a4 bxa4 5.b5 a3 6.Rxa3 Rxd6 7.Ra6 Rd5 8.Rxe6+ Kf7 9.Re3 Rxb5
= (0.00) Depth: 15 00:02:29 315mN
1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Rd8 4.a4 bxa4 5.b5 a3 6.Rxa3 Rxd6 7.Ra6 Rd5 8.Rxe6+ Kf7 9.Re3 Rxb5
= (0.00) Depth: 15 00:03:31 420mN
1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Rd8 4.Ke3 Kf5 5.d7 Kf6 6.Rd6 g5 7.Ke4 Ke7 8.Rb6 Rxd7 9.Rxb5 g4
= (0.00) Depth: 16 00:07:42 929mN
1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Rd8 4.Ke3 Kf5 5.d7 Kf6 6.Rd6 g5 7.Ke4 Ke7 8.Rb6 Rxd7 9.Rxb5 g4
= (0.00) Depth: 16 00:09:53 1215mN
1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Rd8 4.Ke3 Kf5 5.d7 Kf6 6.Rd2 Ke7 7.Rg2 Kf6 8.Rf2+ Ke7 9.Rg2
= (0.00) Depth: 17 00:23:50 1215mN
1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Rd8 4.Ke3 Kf5 5.d7 Kf6 6.Rd2 Ke7 7.Rg2 Kf6 8.Rf2+ Ke7 9.Rg2
= (0.00) Depth: 17 00:28:08 1215mN
1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Rd8 4.Ke3 Kf5 5.d7 Kf6 6.Rd2 g6 7.Ke4 Ke7 8.Rg2 Rxd7 9.Rxg6 Rd2
= (-0.02) Depth: 18 01:43:49 1215mN
1.c6 Rxc6 2.Rf8+ Kxf8 3.gxh7 Rc2+ 4.Kg3 Rc3+ 5.Kg2 Rc2+ 6.Kg3
= (0.00) Depth: 18 04:38:49 1406mN
1.c6 Rxc6 2.Rf8+ Kxf8 3.gxh7 Rc2+ 4.Kg3 Rc3+ 5.Kg2 Rc2+ 6.Kg3
= (0.00) Depth: 18 04:49:47 1406mN
1.c6 Rxc6 2.Rf8+ Kxf8 3.gxh7 Rc2+ 4.Kg3 Rc3+ 5.Kg2 Rc2+ 6.Kg3
= (0.00) Depth: 19 06:57:21 1406mN
1.c6 Rxc6 2.Rf8+ Kxf8 3.gxh7 Rc2+ 4.Kg3 Rc3+ 5.Kg2 Rc2+ 6.Kg3
= (0.00) Depth: 19 13:45:25 1406mN
1.c6
+/= (0.40) Depth: 20 31:01:20 1406mN

[/code]

gaviota log paste:

Gaviota 0.74.12
Compiled: Jan 5 2010 23:42:50

Playing Session
---------------


learning succesfully loaded from: learn.epd

SEED for rand_table_init(): 1269393638

received <-- xboard
received <-- protover 2
feature done=0
feature ping=1
feature setboard=1
feature playother=1
feature usermove=1
feature time=1
feature reuse=1
feature analyze=1
feature variants="normal"
feature colors=0
feature name=1
feature sigint=0
feature sigterm=0
feature smp=1
feature memory=1
feature egt="gaviota"
feature sn=1
feature nps=1

feature option="Engine -string Gaviota 0.74.12"

feature option="Use Opening Book -check 0"

feature option="Book learning activated -check 1"

feature option="Book file -file book2650.bin"

feature option="Positional learning activated -check 1"

feature option="Learning file -file learn.epd"

feature option="Use learned positions -check 1"

feature option="Resign mode -check 1"

feature option="Own kibitz -check 0"

feature option="Endgame Tablebases -combo *gaviota /// none"

feature option="Tablebase Compressed -check 1"

feature option="Pieces installed -combo none /// 3 /// 4 /// *5"

feature option="Tablebases probing depth -spin 2 0 5"

feature option="Alternative tablebase path 1 -path gtb/"

feature option="Alternative tablebase path 2 -path "

feature option="Alternative tablebase path 3 -path "

feature option="Alternative tablebase path 4 -path "

feature option="Log -check 1"

feature option="Maximum number of log files -slider 20 0 500"

feature option="Log Path -path logs"

feature option="Save -save"

feature myname="Gaviota 0.74.12"

feature san=0

feature done=1

received <-- accepted done
received <-- accepted done
received <-- accepted ping
received <-- accepted setboard
received <-- accepted playother
received <-- accepted usermove
received <-- accepted time
received <-- accepted reuse
received <-- accepted analyze
received <-- accepted variants
received <-- accepted colors
received <-- accepted name
received <-- accepted sigint
received <-- accepted sigterm
received <-- accepted smp
received <-- accepted memory
received <-- accepted egt
received <-- accepted sn
received <-- accepted nps
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted myname
received <-- accepted san
received <-- accepted done
received <-- new


NEW_GAME


SEED for rand_table_init(): 1269393639

received <-- level 0 5 0
level --> 0 moves per 30000, inc=0
received <-- post
received <-- hard
received <-- easy
received <-- new


NEW_GAME


SEED for rand_table_init(): 1269393639

received <-- post
received <-- hard
received <-- easy
received <-- force
received <-- setboard 2r3k1/6pp/3pp1P1/1pP5/1P6/P4R2/5K2/8 w - - 0 1
received <-- analyze
About to launch an engine thread...
About to create a thread...
Decision Phase...

-------------- NEW ITERATION ----------------

Signature[1]: c5de975e
2r3k1/6pp/3pp1P1/1pP5/1P6/P4R2/5K2/8 w - - 0 1
+-----------------+
| . . r . . . k . |
| . . . . . . p p |
| . . . p p . P . |
| . p P . . . . . | Castling:
| . P . . . . . . | ep: -
| P . . . . R . . |
| . . . . . K . . |
| . . . . . . . . | [White]
+-----------------+

legal moves available = 22
deepening call...
Creating thread...
t=0
thread created...
iterative deepening wrapper...
********* Starts iterative deepening, thread = 0
set timer to infinite
13 1 0.0 +0.26 1.cxd6 Rc2+ 2.Ke3 hxg6
57 1 0.0 +1.20 1.gxh7+ Kxh7 2.Rh3+ Kg6 3.cxd6
263 2 0.0 +1.12 1.gxh7+ Kxh7 2.Rh3+ Kg6 3.cxd6 Rc2+
4.Ke3
2815 3 0.0 +0.97 1.gxh7+ Kxh7 2.cxd6 Rc2+ 3.Ke3 g5
4.Rf7+ Kg6
~ +0.56 will fail low? ( 136)
~ +0.90 ok ( 220)
7446 4 0.0 +0.90 1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rh3+ Kg6
4.Rd3
18534 5 0.0 +0.95 1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rd3 Rf8+
4.Ke2 g5
43377 6 0.0 +0.99 1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rh3+ Kg6
4.Rd3 Rf8+ 5.Rf3 Rd8
47448 6: 0.0 +0.99 1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rh3+ Kg6
4.Rd3 Rf8+ 5.Rf3 Rd8
~ +0.58 will fail low? ( 142)
~ +0.82 ok ( 201)
~ +0.58 will fail low? ( 142)
~ +1.25 ok ( 305)
106327 7 0.1 +1.02 1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rd3 Rd7 4.Ke3
g5 5.Ke4
120593 7: 0.1 +1.02 1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rd3 Rd7 4.Ke3
g5 5.Ke4
292489 8 0.2 +0.94 1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rh3+ Kg6
4.Rd3 Kf7 5.Ke2 Ke8 6.Rd1
323709 8: 0.2 +0.94 1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rh3+ Kg6
4.Rd3 Kf7 5.Ke2 Ke8 6.Rd1
~ +0.53 will fail low? ( 129)
~ +0.86 ok ( 209)
724831 9 0.4 +0.86 1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rd3 Rd7 4.Ke3
g5 5.Ke4 g4 6.Ke5
817792 9: 0.4 +0.86 1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rd3 Rd7 4.Ke3
g5 5.Ke4 g4 6.Ke5
~ +0.45 will fail low? ( 109)
~ +0.90 ok ( 220)
1709528 10 1.1 +0.53 1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rd3 Kg6 4.Ke3
Kf5 5.Rd1 e5 6.Rd5 g5
2063564 10: 1.2 +0.53 1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rd3 Kg6 4.Ke3
Kf5 5.Rd1 e5 6.Rd5 g5
4737478 11 2.4 +0.79 1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Kf6 4.Ke3
g5 5.Ke4 Rc4+ 6.Kf3 g4+ 7.Ke3 Rc8 8.d7
Rd8
5222768 11: 2.6 +0.79 1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Kf6 4.Ke3
g5 5.Ke4 Rc4+ 6.Kf3 g4+ 7.Ke3 Rc8 8.d7
Rd8
~ +0.38 will fail low? ( 94)
~ +1.20 ok ( 294)
10704965 12 5.1 +0.58 1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Kf6 4.Rd1
g5 5.Ke3 Rd8 6.Ke4 g4 7.Rf1+ Kg5 8.Ke5
12315137 12: 5.8 +0.58 1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Kf6 4.Rd1
g5 5.Ke3 Rd8 6.Ke4 g4 7.Rf1+ Kg5 8.Ke5
28863312 13 13.4 +0.48 1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Rd8 4.Ke3
Kf5 5.Rd2 g5 6.Rd3 e5 7.Rd5 g4 8.d7 g3
34827803 13: 16.1 +0.48 1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Rd8 4.Ke3
Kf5 5.Rd2 g5 6.Rd3 e5 7.Rd5 g4 8.d7 g3
~ +0.07 will fail low? ( 18)
~ +0.89 ok ( 218)
~ +0.07 will fail low? ( 18)
~ +0.33 ok ( 80)
~ +0.07 will fail low? ( 18)
~ +0.33 ok ( 80)
~ +0.07 will fail low? ( 18)
~ +0.28 ok ( 69)
~ +0.07 will fail low? ( 18)
~ +0.68 ok ( 167)
~ +0.07 will fail low? ( 18)
71025547 14 32.2 :-( 1.gxh7+
~ +0.34 ok ( 82)
~ +0.07 will fail low? ( 18)
~ +0.36 ok ( 87)
~ +0.07 will fail low? ( 18)
~ +0.89 ok ( 218)
~ +0.07 will fail low? ( 18)
115778477 14 60.5 :-(
152627666 14 74.8 +0.03 1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Rd8 4.Ke3
Kf5 5.d7 Kf6 6.Rd6 Kf7 7.Rb6 Ke7 8.a4
bxa4
162753707 14: 78.5 +0.03 1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Rd8 4.Ke3
Kf5 5.d7 Kf6 6.Rd6 Kf7 7.Rb6 Ke7 8.a4
bxa4
~ -0.38 will fail low? ( -92)
~ +0.02 ok ( 6)
315426621 15 148.0 +0.00 1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Rd8 4.a4
bxa4 5.b5 a3 6.Rxa3 Rxd6 7.Ra6 Rd5
8.Rxe6+ Kf7 9.Re3 Rxb5 <=TABLE
419522058 15: 210.9 +0.00 1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Rd8 4.a4
bxa4 5.b5 a3 6.Rxa3 Rxd6 7.Ra6 Rd5
8.Rxe6+ Kf7 9.Re3 Rxb5 <=TABLE
929388214 16 461.7 -0.00 1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Rd8 4.Ke3
Kf5 5.d7 Kf6 6.Rd6 g5 7.Ke4 Ke7 8.Rb6
Rxd7 9.Rxb5 g4 10.Rg5
1215100593 16: 592.3 -0.00 1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Rd8 4.Ke3
Kf5 5.d7 Kf6 6.Rd6 g5 7.Ke4 Ke7 8.Rb6
Rxd7 9.Rxb5 g4 10.Rg5
2929533917 17 1429.8 +0.00 1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Rd8 4.Ke3
Kf5 5.d7 Kf6 6.Rd2 Ke7 7.Rg2 Kf6 8.Rf2+
Ke7 9.Rg2
3472646471 17: 1687.3 +0.00 1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Rd8 4.Ke3
Kf5 5.d7 Kf6 6.Rd2 Ke7 7.Rg2 Kf6 8.Rf2+
Ke7 9.Rg2
12478290017 18 6228.3 -0.02 1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Rd8 4.Ke3
Kf5 5.d7 Kf6 6.Rd2 g6 7.Ke4 Ke7 8.Rg2
Rxd7 9.Rxg6 Rd2 10.Rg7+ Kf6 11.Rc7 Rh2
31470401287 18 16728.1 +0.00 1.c6 Rxc6 2.Rf8+ Kxf8 3.gxh7 Rc2+ 4.Kg3
Rc3+ 5.Kg2 Rc2+ 6.Kg3
32539544774 18: 17386.2 +0.00 1.c6 Rxc6 2.Rf8+ Kxf8 3.gxh7 Rc2+ 4.Kg3
Rc3+ 5.Kg2 Rc2+ 6.Kg3
49395363548 19 25040.5 +0.00 1.c6 Rxc6 2.Rf8+ Kxf8 3.gxh7 Rc2+ 4.Kg3
Rc3+ 5.Kg2 Rc2+ 6.Kg3
93169474945 19: 49524.9 +0.00 1.c6 Rxc6 2.Rf8+ Kxf8 3.gxh7 Rc2+ 4.Kg3
Rc3+ 5.Kg2 Rc2+ 6.Kg3
232885482741 20 111679.3 :-) 1.c6
~ -0.41 will fail low? ( -100)
~ -0.36 ok ( -87)
~ -0.41 will fail low? ( -100)
~ -0.19 ok ( -47)
~ -0.41 will fail low? ( -100)
~ +1.49 ok ( 363)
~ -0.41 will fail low? ( -100)
~ +1.49 ok ( 363)
~ -0.41 will fail low? ( -100)
~ +0.53 ok ( 130)
~ -0.41 will fail low? ( -100)
~ +1.20 ok ( 292)
~ -0.41 will fail low? ( -100)
~ +0.17 ok ( 41)
~ -0.41 will fail low? ( -100)
~ +0.30 ok ( 74)
~ -0.41 will fail low? ( -100)
~ -0.23 ok ( -56)
~ -0.41 will fail low? ( -100)
~ +0.20 ok ( 50)
~ -0.41 will fail low? ( -100)
~ +1.49 ok ( 363)
received <-- exit
Going to stop the engine...
TIME'S EXPIRED
curr part eval: 0
alpha: -100
moves searched: 0
returned eval: -32161

Time's up --> failing: NOT low...
Game Time: 165161.094000

Ply: 20
c5-c6 Rc8xc6 Rf3-f8 Kg8xf8 g6xh7 Rc6-c2 Kf2-g3 Rc2-c3
Kg3-g2 Rc3-c2 Kg2-g3
Score: 0.00 (0) Evals: 200254061572 Time: 165161.1s nps: 2154621 Q/all: 0.37
-------------------------------------------------------------------
nodes cutoffs missed tree_exp
-------------------------------------------------------------------
path 224785215716 32113480480 10740802550 1.33
quies 131074281890 54368674927 5464295741 1.10
all 355859497606 86482155407 16205098291 1.19
-------------------------------------------------------------------
hashtable= attempts: 223572094227 hits: 54.9% perfect: 33.9%

GTB CACHE STATS
probes: 496565739
hard: 14840185
soft: 481725554
hits: 86592683
misses: 5264681
softmisses: 404708375
efficiency: 94.3%
average searches 9860.3
occupancy: 100.0%

go to post Green Lights for n=4 threads
go to join threads
go to destroy mutexes
go to destroy semaphores
go to return

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

Engine has stopped
Exit analysis mode

Code: Select all

Top
User avatar
Arturo Ochoa
Posts: 220
Joined: Wed Mar 08, 2006 9:27 pm
Location: Montréal, Canada

Re: Winning score? .... Now the symmetrical positions...

Post by Arturo Ochoa »

David Dahlem wrote:[D]2r3k1/6pp/3pp1P1/1pP5/1P6/P4R2/5K2/8 w - - 0 1

Interesting position, a "White to Win" study by Skuja & Giese. On my slow machine, Stockfish 1.6.3s takes almost 1-1/2 hours to show a winning score.

What's blacks best response to c6?

Stockfish 1.6.3s:

27 01:43 150.209.556 1.447.802 0.00 c5xd6 h7xg6 Rf3e3 Kg8f7 Re3e5 Rc8c3 Re5xb5 Rc3xa3 Rb5b7+ Kf7f6 b4b5 Ra3d3 d6d7 Kf6e7 d7d8N+ Ke7xd8 Rb7xg7 Rd3b3 Rg7xg6 Rb3xb5 Rg6g3 Kd8e7 Rg3d3 Rb5b8 Kf2e2 Ke7f6 Ke2f2 Kf6e7
27+ 05:00 393.253.849 1.308.665 +0.20 c5c6 e6e5 a3a4 Rc8xc6 Rf3f8+ Kg8xf8 g6xh7 Rc6c2+ Kf2g3
28+ 10:09 768.297.958 1.261.765 +1.01 c5c6 h7h6 Rf3c3
29 1:26:34 6.350.970,250 1.222.718 +4.12 c5c6 h7xg6 Rf3c3 d6d5 a3a4 b5xa4 b4b5 a4a3 Rc3xa3 Kg8f7 Ra3a7+ Kf7e8 Ra7xg7 Ke8f8 Rg7xg6 Kf8f7 Rg6h6 d5d4 c6c7 Kf7e7 b5b6 Ke7d7 Rh6xe6 Kd7xe6 b6b7 Rc8xc7 b7b8Q Rc7c3 Qb8f4 Ke6d5 Qf4f5+ Kd5d6 Kf2e2 Rc3e3+ Ke2d2 Re3c3 Qf5e4 Kd6c5 Qe4e5+ Kc5c4 Qe5d6 Rc3d3+ Kd2e2 Rd3c3 Qd6c6+ Kc4b4
[D]1k3r2/pp6/1P1pp3/5Pp1/6P1/2R4P/2K5/8 w - - 0 1

[D]8/5k2/p4r2/1p6/1Pp5/3PP1p1/6PP/2R3K1 b - - 0 1

[D]8/2k5/2r4p/6p1/5pP1/1p1PP3/PP6/1K3R2 b - - 0 1
Top
User avatar
michiguel
Posts: 6401
Joined: Thu Mar 09, 2006 8:30 pm
Location: Chicago, Illinois, USA

Re: Winning score?

Post by michiguel »

mhalstern wrote:I left gaviota Running for 46 hours to see if it could find a winning score. I finally sees some positive value for c6 after 31 hours with +/= (0.40) after 20 ply. I was going to let it run for a few more days to get another ply or 2, but I accidentally clicked somewhere in the Fritz GUI, causing the search to be started over. Ahhhhhh!!!!!!!!!!!

I am running the Gaviota 0.74.12 64 - The 64 bit Version on my I7-920 2.67 ghz. I was hoping for a better score as I like supporing Gaviota, because of Miguel's Tablebase Work. I'll past the eval, then the Gaviota Log File.

I have a few questions for Miguel:


Also, why does the eval show the same 1406mN searched from ply 18 through ply 20? The log file clearly shows more positions searched with each additional ply.
That must be something related to the GUI. I wonder whether variable of 32 bits in Fritz overflew or something like that. As you say, you can see that the nodes in Gaviota keep increasing in the log. Gaviota has all 64 bit counters, so they are not going to overflow in this millenium. I am still going to check to make sure there is no other problem from Gaviota's side.

Also, the final eval, with the score of (0.40), only shows c6 as the starting move. Why dosen't it show the rest of the line it is considering?
It is "failing high". You may see the score of 0.40 with a smiley, which means that Gaviota is saying, "I know I can get at least 0.40, but it is higher than that, I feel happy, I smell something really good".
Since the evaluation fell out of the window that was expected, It is not possible to know the PV. Those were thrown out in the previous iterations as "too optimistic". Now Gaviota realizes that those lines were not too optimistic (hence, the smiley), but the PVs are lost. Gaviota needs to recalculate them and it was in the process of doing it. From the log, it looks like some potential lines could reach up to ~ +1.49

As an observation, I know tfrom thje faq, that Gaviota does not use a full 100% cpu, even though it is mpu, however, during the long search, there were many instances (I never checked for more than 2 or 3 minutes of a time) of only 25% usage. I Know that the cores = 4 line in gaaviota.ini.txt works, as I sometimes saw 70% cpu. usage.
There are some brief periods of time in which Gaviota uses only one core. That is when it is examining lines close to the principal variation and close to the tips. Generally, it is a short period of time (~5%) compared to the rest of the search, but when you search for such a long time, it could become very visible. It one iteration takes 10 hours, you may see that the first 0.5 hour is using one core. Gaviota's SMP is very simple by design, which helped me to get it up and running with very few growing pains. It is not as elaborated as other people's, but it works and it is clearly better than nothing. The speed up is 1.6x with two cores and it looks like it may increase 60% for each extra core (but this is not tested). Crafty claims 70%, which is one of the most efficient implementations around. So, I am not very disappointed with Gaviota's parallel search. Since it is proving to be stable, I plan in the future to work on improving it. I need to buy quad first :-)

I also wonder, have I set a word record for the most plies reached by gaviota?
You certainly did :-)

Miguel
PS: Thanks for you support!

Eval paste:

New game
2r3k1/6pp/3pp1P1/1pP5/1P6/P4R2/5K2/8 w - - 0 1

Analysis by gaviota64.exe:

1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rh3+ Kg6 4.Rd3 Rf8+ 5.Rf3 Rd8
+/- (0.99) Depth: 6 00:00:01 43kN
1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rh3+ Kg6 4.Rd3 Rf8+ 5.Rf3 Rd8
+/- (0.99) Depth: 6 00:00:01 47kN
1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rd3 Rd7 4.Ke3 g5 5.Ke4
+/- (1.01) Depth: 7 00:00:01 106kN
1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rd3 Rd7 4.Ke3 g5 5.Ke4
+/- (1.01) Depth: 7 00:00:01 121kN
1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rh3+ Kg6 4.Rd3 Kf7 5.Ke2 Ke8 6.Rd1
+/- (0.93) Depth: 8 00:00:01 292kN
1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rh3+ Kg6 4.Rd3 Kf7 5.Ke2 Ke8 6.Rd1
+/- (0.93) Depth: 8 00:00:01 324kN
1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rd3 Rd7 4.Ke3 g5 5.Ke4 g4 6.Ke5
+/- (0.85) Depth: 9 00:00:01 725kN
1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rd3 Rd7 4.Ke3 g5 5.Ke4 g4 6.Ke5
+/- (0.85) Depth: 9 00:00:01 818kN
1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rd3 Kg6 4.Ke3 Kf5 5.Rd1 e5 6.Rd5 g5
+/= (0.52) Depth: 10 00:00:02 1710kN
1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rd3 Kg6 4.Ke3 Kf5 5.Rd1 e5 6.Rd5 g5
+/= (0.52) Depth: 10 00:00:02 2064kN
1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Kf6 4.Ke3 g5 5.Ke4 Rc4+ 6.Kf3 g4+ 7.Ke3 Rc8 8.d7 Rd8
+/- (0.79) Depth: 11 00:00:03 4737kN
1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Kf6 4.Ke3 g5 5.Ke4 Rc4+ 6.Kf3 g4+ 7.Ke3 Rc8 8.d7 Rd8
+/- (0.79) Depth: 11 00:00:03 5223kN
1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Kf6 4.Rd1 g5 5.Ke3 Rd8 6.Ke4 g4 7.Rf1+ Kg5 8.Ke5
+/= (0.57) Depth: 12 00:00:06 10705kN
1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Kf6 4.Rd1 g5 5.Ke3 Rd8 6.Ke4 g4 7.Rf1+ Kg5 8.Ke5
+/= (0.57) Depth: 12 00:00:06 12315kN
1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Rd8 4.Ke3 Kf5 5.Rd2 g5 6.Rd3 e5 7.Rd5 g4 8.d7 g3
+/= (0.48) Depth: 13 00:00:14 28863kN
1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Rd8 4.Ke3 Kf5 5.Rd2 g5 6.Rd3 e5 7.Rd5 g4 8.d7 g3
+/= (0.48) Depth: 13 00:00:17 34828kN
1.gxh7+
= (0.07) Depth: 14 00:00:33 71026kN
1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Rd8 4.Ke3 Kf5 5.d7 Kf6 6.Rd6 Kf7 7.Rb6 Ke7 8.a4 bxa4
= (0.03) Depth: 14 00:01:15 153mN
1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Rd8 4.Ke3 Kf5 5.d7 Kf6 6.Rd6 Kf7 7.Rb6 Ke7 8.a4 bxa4
= (0.03) Depth: 14 00:01:19 163mN
1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Rd8 4.a4 bxa4 5.b5 a3 6.Rxa3 Rxd6 7.Ra6 Rd5 8.Rxe6+ Kf7 9.Re3 Rxb5
= (0.00) Depth: 15 00:02:29 315mN
1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Rd8 4.a4 bxa4 5.b5 a3 6.Rxa3 Rxd6 7.Ra6 Rd5 8.Rxe6+ Kf7 9.Re3 Rxb5
= (0.00) Depth: 15 00:03:31 420mN
1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Rd8 4.Ke3 Kf5 5.d7 Kf6 6.Rd6 g5 7.Ke4 Ke7 8.Rb6 Rxd7 9.Rxb5 g4
= (0.00) Depth: 16 00:07:42 929mN
1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Rd8 4.Ke3 Kf5 5.d7 Kf6 6.Rd6 g5 7.Ke4 Ke7 8.Rb6 Rxd7 9.Rxb5 g4
= (0.00) Depth: 16 00:09:53 1215mN
1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Rd8 4.Ke3 Kf5 5.d7 Kf6 6.Rd2 Ke7 7.Rg2 Kf6 8.Rf2+ Ke7 9.Rg2
= (0.00) Depth: 17 00:23:50 1215mN
1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Rd8 4.Ke3 Kf5 5.d7 Kf6 6.Rd2 Ke7 7.Rg2 Kf6 8.Rf2+ Ke7 9.Rg2
= (0.00) Depth: 17 00:28:08 1215mN
1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Rd8 4.Ke3 Kf5 5.d7 Kf6 6.Rd2 g6 7.Ke4 Ke7 8.Rg2 Rxd7 9.Rxg6 Rd2
= (-0.02) Depth: 18 01:43:49 1215mN
1.c6 Rxc6 2.Rf8+ Kxf8 3.gxh7 Rc2+ 4.Kg3 Rc3+ 5.Kg2 Rc2+ 6.Kg3
= (0.00) Depth: 18 04:38:49 1406mN
1.c6 Rxc6 2.Rf8+ Kxf8 3.gxh7 Rc2+ 4.Kg3 Rc3+ 5.Kg2 Rc2+ 6.Kg3
= (0.00) Depth: 18 04:49:47 1406mN
1.c6 Rxc6 2.Rf8+ Kxf8 3.gxh7 Rc2+ 4.Kg3 Rc3+ 5.Kg2 Rc2+ 6.Kg3
= (0.00) Depth: 19 06:57:21 1406mN
1.c6 Rxc6 2.Rf8+ Kxf8 3.gxh7 Rc2+ 4.Kg3 Rc3+ 5.Kg2 Rc2+ 6.Kg3
= (0.00) Depth: 19 13:45:25 1406mN
1.c6
+/= (0.40) Depth: 20 31:01:20 1406mN

[/code]

gaviota log paste:

Gaviota 0.74.12
Compiled: Jan 5 2010 23:42:50

Playing Session
---------------


learning succesfully loaded from: learn.epd

SEED for rand_table_init(): 1269393638

received <-- xboard
received <-- protover 2
feature done=0
feature ping=1
feature setboard=1
feature playother=1
feature usermove=1
feature time=1
feature reuse=1
feature analyze=1
feature variants="normal"
feature colors=0
feature name=1
feature sigint=0
feature sigterm=0
feature smp=1
feature memory=1
feature egt="gaviota"
feature sn=1
feature nps=1

feature option="Engine -string Gaviota 0.74.12"

feature option="Use Opening Book -check 0"

feature option="Book learning activated -check 1"

feature option="Book file -file book2650.bin"

feature option="Positional learning activated -check 1"

feature option="Learning file -file learn.epd"

feature option="Use learned positions -check 1"

feature option="Resign mode -check 1"

feature option="Own kibitz -check 0"

feature option="Endgame Tablebases -combo *gaviota /// none"

feature option="Tablebase Compressed -check 1"

feature option="Pieces installed -combo none /// 3 /// 4 /// *5"

feature option="Tablebases probing depth -spin 2 0 5"

feature option="Alternative tablebase path 1 -path gtb/"

feature option="Alternative tablebase path 2 -path "

feature option="Alternative tablebase path 3 -path "

feature option="Alternative tablebase path 4 -path "

feature option="Log -check 1"

feature option="Maximum number of log files -slider 20 0 500"

feature option="Log Path -path logs"

feature option="Save -save"

feature myname="Gaviota 0.74.12"

feature san=0

feature done=1

received <-- accepted done
received <-- accepted done
received <-- accepted ping
received <-- accepted setboard
received <-- accepted playother
received <-- accepted usermove
received <-- accepted time
received <-- accepted reuse
received <-- accepted analyze
received <-- accepted variants
received <-- accepted colors
received <-- accepted name
received <-- accepted sigint
received <-- accepted sigterm
received <-- accepted smp
received <-- accepted memory
received <-- accepted egt
received <-- accepted sn
received <-- accepted nps
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted option
received <-- accepted myname
received <-- accepted san
received <-- accepted done
received <-- new


NEW_GAME


SEED for rand_table_init(): 1269393639

received <-- level 0 5 0
level --> 0 moves per 30000, inc=0
received <-- post
received <-- hard
received <-- easy
received <-- new


NEW_GAME


SEED for rand_table_init(): 1269393639

received <-- post
received <-- hard
received <-- easy
received <-- force
received <-- setboard 2r3k1/6pp/3pp1P1/1pP5/1P6/P4R2/5K2/8 w - - 0 1
received <-- analyze
About to launch an engine thread...
About to create a thread...
Decision Phase...

-------------- NEW ITERATION ----------------

Signature[1]: c5de975e
2r3k1/6pp/3pp1P1/1pP5/1P6/P4R2/5K2/8 w - - 0 1
+-----------------+
| . . r . . . k . |
| . . . . . . p p |
| . . . p p . P . |
| . p P . . . . . | Castling:
| . P . . . . . . | ep: -
| P . . . . R . . |
| . . . . . K . . |
| . . . . . . . . | [White]
+-----------------+

legal moves available = 22
deepening call...
Creating thread...
t=0
thread created...
iterative deepening wrapper...
********* Starts iterative deepening, thread = 0
set timer to infinite
13 1 0.0 +0.26 1.cxd6 Rc2+ 2.Ke3 hxg6
57 1 0.0 +1.20 1.gxh7+ Kxh7 2.Rh3+ Kg6 3.cxd6
263 2 0.0 +1.12 1.gxh7+ Kxh7 2.Rh3+ Kg6 3.cxd6 Rc2+
4.Ke3
2815 3 0.0 +0.97 1.gxh7+ Kxh7 2.cxd6 Rc2+ 3.Ke3 g5
4.Rf7+ Kg6
~ +0.56 will fail low? ( 136)
~ +0.90 ok ( 220)
7446 4 0.0 +0.90 1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rh3+ Kg6
4.Rd3
18534 5 0.0 +0.95 1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rd3 Rf8+
4.Ke2 g5
43377 6 0.0 +0.99 1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rh3+ Kg6
4.Rd3 Rf8+ 5.Rf3 Rd8
47448 6: 0.0 +0.99 1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rh3+ Kg6
4.Rd3 Rf8+ 5.Rf3 Rd8
~ +0.58 will fail low? ( 142)
~ +0.82 ok ( 201)
~ +0.58 will fail low? ( 142)
~ +1.25 ok ( 305)
106327 7 0.1 +1.02 1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rd3 Rd7 4.Ke3
g5 5.Ke4
120593 7: 0.1 +1.02 1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rd3 Rd7 4.Ke3
g5 5.Ke4
292489 8 0.2 +0.94 1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rh3+ Kg6
4.Rd3 Kf7 5.Ke2 Ke8 6.Rd1
323709 8: 0.2 +0.94 1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rh3+ Kg6
4.Rd3 Kf7 5.Ke2 Ke8 6.Rd1
~ +0.53 will fail low? ( 129)
~ +0.86 ok ( 209)
724831 9 0.4 +0.86 1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rd3 Rd7 4.Ke3
g5 5.Ke4 g4 6.Ke5
817792 9: 0.4 +0.86 1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rd3 Rd7 4.Ke3
g5 5.Ke4 g4 6.Ke5
~ +0.45 will fail low? ( 109)
~ +0.90 ok ( 220)
1709528 10 1.1 +0.53 1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rd3 Kg6 4.Ke3
Kf5 5.Rd1 e5 6.Rd5 g5
2063564 10: 1.2 +0.53 1.gxh7+ Kxh7 2.cxd6 Rd8 3.Rd3 Kg6 4.Ke3
Kf5 5.Rd1 e5 6.Rd5 g5
4737478 11 2.4 +0.79 1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Kf6 4.Ke3
g5 5.Ke4 Rc4+ 6.Kf3 g4+ 7.Ke3 Rc8 8.d7
Rd8
5222768 11: 2.6 +0.79 1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Kf6 4.Ke3
g5 5.Ke4 Rc4+ 6.Kf3 g4+ 7.Ke3 Rc8 8.d7
Rd8
~ +0.38 will fail low? ( 94)
~ +1.20 ok ( 294)
10704965 12 5.1 +0.58 1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Kf6 4.Rd1
g5 5.Ke3 Rd8 6.Ke4 g4 7.Rf1+ Kg5 8.Ke5
12315137 12: 5.8 +0.58 1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Kf6 4.Rd1
g5 5.Ke3 Rd8 6.Ke4 g4 7.Rf1+ Kg5 8.Ke5
28863312 13 13.4 +0.48 1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Rd8 4.Ke3
Kf5 5.Rd2 g5 6.Rd3 e5 7.Rd5 g4 8.d7 g3
34827803 13: 16.1 +0.48 1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Rd8 4.Ke3
Kf5 5.Rd2 g5 6.Rd3 e5 7.Rd5 g4 8.d7 g3
~ +0.07 will fail low? ( 18)
~ +0.89 ok ( 218)
~ +0.07 will fail low? ( 18)
~ +0.33 ok ( 80)
~ +0.07 will fail low? ( 18)
~ +0.33 ok ( 80)
~ +0.07 will fail low? ( 18)
~ +0.28 ok ( 69)
~ +0.07 will fail low? ( 18)
~ +0.68 ok ( 167)
~ +0.07 will fail low? ( 18)
71025547 14 32.2 :-( 1.gxh7+
~ +0.34 ok ( 82)
~ +0.07 will fail low? ( 18)
~ +0.36 ok ( 87)
~ +0.07 will fail low? ( 18)
~ +0.89 ok ( 218)
~ +0.07 will fail low? ( 18)
115778477 14 60.5 :-(
152627666 14 74.8 +0.03 1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Rd8 4.Ke3
Kf5 5.d7 Kf6 6.Rd6 Kf7 7.Rb6 Ke7 8.a4
bxa4
162753707 14: 78.5 +0.03 1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Rd8 4.Ke3
Kf5 5.d7 Kf6 6.Rd6 Kf7 7.Rb6 Ke7 8.a4
bxa4
~ -0.38 will fail low? ( -92)
~ +0.02 ok ( 6)
315426621 15 148.0 +0.00 1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Rd8 4.a4
bxa4 5.b5 a3 6.Rxa3 Rxd6 7.Ra6 Rd5
8.Rxe6+ Kf7 9.Re3 Rxb5 <=TABLE
419522058 15: 210.9 +0.00 1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Rd8 4.a4
bxa4 5.b5 a3 6.Rxa3 Rxd6 7.Ra6 Rd5
8.Rxe6+ Kf7 9.Re3 Rxb5 <=TABLE
929388214 16 461.7 -0.00 1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Rd8 4.Ke3
Kf5 5.d7 Kf6 6.Rd6 g5 7.Ke4 Ke7 8.Rb6
Rxd7 9.Rxb5 g4 10.Rg5
1215100593 16: 592.3 -0.00 1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Rd8 4.Ke3
Kf5 5.d7 Kf6 6.Rd6 g5 7.Ke4 Ke7 8.Rb6
Rxd7 9.Rxb5 g4 10.Rg5
2929533917 17 1429.8 +0.00 1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Rd8 4.Ke3
Kf5 5.d7 Kf6 6.Rd2 Ke7 7.Rg2 Kf6 8.Rf2+
Ke7 9.Rg2
3472646471 17: 1687.3 +0.00 1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Rd8 4.Ke3
Kf5 5.d7 Kf6 6.Rd2 Ke7 7.Rg2 Kf6 8.Rf2+
Ke7 9.Rg2
12478290017 18 6228.3 -0.02 1.gxh7+ Kxh7 2.cxd6 Kg6 3.Rd3 Rd8 4.Ke3
Kf5 5.d7 Kf6 6.Rd2 g6 7.Ke4 Ke7 8.Rg2
Rxd7 9.Rxg6 Rd2 10.Rg7+ Kf6 11.Rc7 Rh2
31470401287 18 16728.1 +0.00 1.c6 Rxc6 2.Rf8+ Kxf8 3.gxh7 Rc2+ 4.Kg3
Rc3+ 5.Kg2 Rc2+ 6.Kg3
32539544774 18: 17386.2 +0.00 1.c6 Rxc6 2.Rf8+ Kxf8 3.gxh7 Rc2+ 4.Kg3
Rc3+ 5.Kg2 Rc2+ 6.Kg3
49395363548 19 25040.5 +0.00 1.c6 Rxc6 2.Rf8+ Kxf8 3.gxh7 Rc2+ 4.Kg3
Rc3+ 5.Kg2 Rc2+ 6.Kg3
93169474945 19: 49524.9 +0.00 1.c6 Rxc6 2.Rf8+ Kxf8 3.gxh7 Rc2+ 4.Kg3
Rc3+ 5.Kg2 Rc2+ 6.Kg3
232885482741 20 111679.3 :-) 1.c6
~ -0.41 will fail low? ( -100)
~ -0.36 ok ( -87)
~ -0.41 will fail low? ( -100)
~ -0.19 ok ( -47)
~ -0.41 will fail low? ( -100)
~ +1.49 ok ( 363)
~ -0.41 will fail low? ( -100)
~ +1.49 ok ( 363)
~ -0.41 will fail low? ( -100)
~ +0.53 ok ( 130)
~ -0.41 will fail low? ( -100)
~ +1.20 ok ( 292)
~ -0.41 will fail low? ( -100)
~ +0.17 ok ( 41)
~ -0.41 will fail low? ( -100)
~ +0.30 ok ( 74)
~ -0.41 will fail low? ( -100)
~ -0.23 ok ( -56)
~ -0.41 will fail low? ( -100)
~ +0.20 ok ( 50)
~ -0.41 will fail low? ( -100)
~ +1.49 ok ( 363)
received <-- exit
Going to stop the engine...
TIME'S EXPIRED
curr part eval: 0
alpha: -100
moves searched: 0
returned eval: -32161

Time's up --> failing: NOT low...
Game Time: 165161.094000

Ply: 20
c5-c6 Rc8xc6 Rf3-f8 Kg8xf8 g6xh7 Rc6-c2 Kf2-g3 Rc2-c3
Kg3-g2 Rc3-c2 Kg2-g3
Score: 0.00 (0) Evals: 200254061572 Time: 165161.1s nps: 2154621 Q/all: 0.37
-------------------------------------------------------------------
nodes cutoffs missed tree_exp
-------------------------------------------------------------------
path 224785215716 32113480480 10740802550 1.33
quies 131074281890 54368674927 5464295741 1.10
all 355859497606 86482155407 16205098291 1.19
-------------------------------------------------------------------
hashtable= attempts: 223572094227 hits: 54.9% perfect: 33.9%

GTB CACHE STATS
probes: 496565739
hard: 14840185
soft: 481725554
hits: 86592683
misses: 5264681
softmisses: 404708375
efficiency: 94.3%
average searches 9860.3
occupancy: 100.0%

go to post Green Lights for n=4 threads
go to join threads
go to destroy mutexes
go to destroy semaphores
go to return

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

Engine has stopped
Exit analysis mode

Code: Select all

Top
metax
Posts: 344
Joined: Wed Sep 23, 2009 5:56 pm
Location: Germany

Re: Winning score?

Post by metax »

I want a world record, too! :lol:

Code: Select all

FEN&#58; 8/k7/3p4/p2P1p2/P2P1P2/8/8/K7 w - - 0 1 

Gaviota32&#58;
28	01&#58;10	  58.508.520	835.836	+3,47	1.Kb1 Ka6 2.Kc2 Kb6 3.Kd2 Kc7 4.Kd3 Kb7 5.Ke3 Kc7 6.Kf3 Kd7 7.Kg3 Ke7 8.Kh4 Kf6 9.Kh5 Kf7 10.Kg5 Ke7 11.Kxf5 Kf7 12.Kg5 Ke7 13.f5 Kf7 14.f6 Ke8
Top

Return to “Computer Chess Club: General Topics”