#Mat in 14

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

Moderators: bob, hgm, Harvey Williamson

Forum rules
This textbox is used to restore diagrams posted with the [d] tag before the upgrade.
User avatar
gleperlier
Posts: 1033
Joined: Sat Feb 04, 2012 9:03 pm

#Mat in 14

Post by gleperlier » Wed Jan 02, 2013 3:10 pm

[D]8/3R1R2/6p1/6kr/1P2B3/p3P1p1/PbN1q3/1K6 b - - 0 51



Rh4 :!:

Cheers,

Gab

zullil
Posts: 5963
Joined: Mon Jan 08, 2007 11:31 pm
Location: PA USA
Full name: Louis Zulli

Re: #Mat in 14

Post by zullil » Wed Jan 02, 2013 7:56 pm

gleperlier wrote:[D]8/3R1R2/6p1/6kr/1P2B3/p3P1p1/PbN1q3/1K6 b - - 0 51



Rh4 :!:

Cheers,

Gab
Critter-1.6a (8 threads, 4 GB Hash and searchmoves h5h4) sees mate in ≤ 15, but not mate in ≤ 14.

Code: Select all

23/54  10:12    8221M  13415K   +M15 Rh4 Rf4 Rxf4 exf4+ Kxf4 Ba8 Qf1+ Ne1 Qxe1+ Kc2 Qxb4 Rd8 Qa4+ Kd3 Qb5+ Kd2 Qa5+ Kc2 Qxd8 Bg2 Qa5 Kb3 Qb5+ Kc2 Ke3 Bf1 Qa4+ Kb1 Qd1#
With a normal search, Critter finds mate in ≤ 15 starting with g2:

Code: Select all

30/64  10:23    8429M  13524K   +M15 g2 Bxg2 Qxg2 Rd1 Rh2 Rc7 Qe2 Rc5+ Kh6 Rg1 Qd3 Re1 Rd2 Rh1+ Kg7 Rc7+ Kf6 Rc6+ Ke5 Rc5+ Kd6 Rc6+ Kxc6 b5+ Kd6 Rc1 Rd1 Rxd1 Qxd1#
Anyone confirm mate in ≤ 14?

zullil
Posts: 5963
Joined: Mon Jan 08, 2007 11:31 pm
Location: PA USA
Full name: Louis Zulli

Re: #Mat in 14

Post by zullil » Fri Jan 04, 2013 11:12 am

gleperlier wrote:[D]8/3R1R2/6p1/6kr/1P2B3/p3P1p1/PbN1q3/1K6 b - - 0 51



Rh4 :!:

Cheers,

Gab
OK, I don't believe you!:D Several initial moves, including Rh4, lead to mate in ≤ 15. Please provide a mate in ≤ 14.

bnst
Posts: 58
Joined: Tue Sep 11, 2007 10:16 am

Re: #Mat in 14

Post by bnst » Thu Jan 10, 2013 9:09 am

According to Chest it is NOT a mate in 12. My estimate is that to check mate in 13 will take more than a day and mate in 14 will take nearly two weeks so I don't bother.

I have made an updated version of Chest 3.19 which I have called 3.19b with all the fixes on Heiner Maxen's homepage and compiled it for 32 and 64-bit execution, so if anybody is interested tell me.

Regards
Andreas

A Distel
Posts: 3243
Joined: Thu Dec 30, 2010 12:33 pm

Re: #Mat in 14

Post by A Distel » Thu Jan 10, 2013 10:03 am

bnst wrote:According to Chest it is NOT a mate in 12. My estimate is that to check mate in 13 will take more than a day and mate in 14 will take nearly two weeks so I don't bother.

I have made an updated version of Chest 3.19 which I have called 3.19b with all the fixes on Heiner Maxen's homepage and compiled it for 32 and 64-bit execution, so if anybody is interested tell me.

Regards
Andreas
Andreas Stabel,

I'm interested!

Thank You.

Regards,

A Distel.
The road to chaos is filled with political correctness.
― Tadros

User avatar
gleperlier
Posts: 1033
Joined: Sat Feb 04, 2012 9:03 pm

Re: #Mat in 14

Post by gleperlier » Thu Jan 10, 2013 11:31 am

Analysis by Deep Junior 13.3:

51...Rh5-h4 52.Rf7-f4 Rh4xf4 53.e3xf4+ Kg5xf4 54.Be4-b7 Qe2-f1+ 55.Nc2-e1 Qf1xe1+ 56.Kb1-c2 Qe1xb4 57.Rd7-d8 Qb4xb7
-+ (-#14) Depth: 25 00:04:20 1914mN, tb=1437

zullil
Posts: 5963
Joined: Mon Jan 08, 2007 11:31 pm
Location: PA USA
Full name: Louis Zulli

Re: #Mat in 14

Post by zullil » Thu Jan 10, 2013 11:39 am

gleperlier wrote:Analysis by Deep Junior 13.3:

51...Rh5-h4 52.Rf7-f4 Rh4xf4 53.e3xf4+ Kg5xf4 54.Be4-b7 Qe2-f1+ 55.Nc2-e1 Qf1xe1+ 56.Kb1-c2 Qe1xb4 57.Rd7-d8 Qb4xb7
-+ (-#14) Depth: 25 00:04:20 1914mN, tb=1437
Critter thinks that 54. Be4-b7 is weaker than 54. Be4-a8. The latter move avoids mate for one more move. So it seems that Deep Junior's evaluation is wrong. :shock:

User avatar
Michael Diosi
Posts: 672
Joined: Mon Jun 22, 2009 11:37 am

Re: #Mat in 14

Post by Michael Diosi » Thu Jan 10, 2013 12:04 pm

Hi,


yes me...

Michael
http://www.playwitharena.com

Ignacio
Posts: 143
Joined: Wed Mar 08, 2006 7:15 pm

Re: #Mat in 14

Post by Ignacio » Thu Jan 10, 2013 1:23 pm

bnst wrote:I have made an updated version of Chest 3.19 which I have called 3.19b with all the fixes on Heiner Maxen's homepage and compiled it for 32 and 64-bit execution, so if anybody is interested tell me.

Regards
Andreas
I'm interested!

Thank You.

Regards,

Ignacio Santos

User avatar
F.Huber
Posts: 783
Joined: Thu Mar 09, 2006 3:50 pm
Location: Austria
Contact:

Re: #Mat in 14

Post by F.Huber » Thu Jan 10, 2013 1:29 pm

Ignacio wrote: I'm interested!
But be aware that this is not the WinChest version (with all the additional features and special parameters), so you can't use this new(?) Chest in ChestUCI.

Regards,
Franz

Post Reply