Rhetoric

on Wed 04 Apr 2012, 9:08 am by · on Wed 04 Apr 2012, 9:08 am by

Rhetoric

new engine by Alberto Sanjuan

Rhetoric has learned to play chess from a selection of games against Grandmasters Karpov of the global elite (Anand, Kasparov, Adams, Gelfand, Bareev, Polgar, etc). We have followed a semi-assisted learning algorithm using genetic algorithms to try to determine much of the weights of the evaluation function.

That makes your style of play is unique in the world.

http://www.chessrhetoric.com/

on Wed 04 Apr 2012, 9:09 am by · on Wed 04 Apr 2012, 9:09 am by

Rhetoric 0.10.d (UCI)
http://www.chessrhetoric.com/index.php/downloads/viewcategory/1-rhetoric

on Tue 25 Jun 2013, 4:20 pm by · on Tue 25 Jun 2013, 4:20 pm by

Rhetoric 1.0

http://www.chessrhetoric.com/index.php/downloads/viewdownload/1-rhetoric/8-rhetoric

on Sat 21 Dec 2013, 10:15 pm by · on Sat 21 Dec 2013, 10:15 pm by

Rhetoric 1.1

- "it must be around 90 Elo stronger than 1.0 version"
- evaluation correction symmetries
- fixed recognition of some simple end evaluation of passed pawns distant king
- fixed LMR in PV
- correction razoring
- correction in the window treatment in PVS
- correction in management time controls with increment
- change in Hash Table: now stores maximum and minimum value
- using aspiration in root node

http://www.chessrhetoric.com/

on Thu 27 Feb 2014, 11:19 pm by · on Thu 27 Feb 2014, 11:19 pm by

http://www.chessrhetoric.com/

From the author:

I managed to add a lot of elo points with only 3 changes: Singular Extensions, Late Move Pruning, and applying a new learning (or tunning) algorithm.

I hope to see comments about his style. I think it plays "human" moves. I love the Rhetorical style.

Cheers.

on Fri 20 Jun 2014, 1:05 pm by · on Fri 20 Jun 2014, 1:05 pm by

Rhetoric 1.4
http://www.chessrhetoric.com/

on Mon 22 Sep 2014, 1:00 pm by · on Mon 22 Sep 2014, 1:00 pm by

Rhetoric 1.4.1
http://www.chessrhetoric.com

Hello,
I have an improved version of Rhetoric. The tunning algorithm has been changed and corrected, and now the evaluation is quite different.

In fact, the similarity test between the different versions of rhetoric shows something very curious:

Code:

sim version 3
------ Rhetoric 1.4.1 (time: 50 ms scale: 1.0) ------
95.33 Rhetoric 1.4.1 (bis) (time: 50 ms scale: 1.0)
53.87 Rhetoric 1.2 x64 (time: 50 ms scale: 1.0)
47.27 Rhetoric 1.4 x64 (time: 50 ms scale: 1.0)
44.63 Fruit 2.1 (time: 50 ms scale: 1.0)
43.41 RobboLito 0.21Q x64 (time: 50 ms scale: 1.0)

It looks as if it were a completely different program. I ran the similarity test twice for the new version for verification.

Changes:
- Tunning/learning changed. Using self play with time odds.
- Added UCI_LimitStrength and UCI_Elo options. Very simple, adding a delay in eval.
- Added an option to change the material weigth. You can change the style to make it more positional or more materialistic. Changing the material value from 50% to 200%. The very first game that I played using 50% of the material, was a crushing Tal-style game. Really entertaining, believe me.
- Added an evaluation cache.

Regards.
Alberto.

on Thu 26 Nov 2015, 3:25 pm by · on Thu 26 Nov 2015, 3:25 pm by

Alberto Sanjuan wrote:Rhetoric is a chess analysis module developed in C ++. Rhetoric meets the UCI (Universal Chess Interface) protocol analysis engine serves for popular graphical interfaces. It works perfectly under environments Chessbase, Arena and Winboard.

Rhetoric is not the program's strongest chess world, but plays a very interesting chess. In fact, his behavior could be described as little materialistic, so for strong club players, including teachers FIDE, can become a sparring training to keep in mind.

What differentiates Rhetoric from other programs?

Rhetoric has learned to play chess from a selection of Karpov's games against Grand Masters of the global elite (Anand, Kasparov, Adams, Gelfand, Bareev, Polgar, etc). It has followed a semi-assisted learning algorithm using genetic algorithms to try to determine much of the weights of the evaluation function.

That makes your playing style is unique in the world.

Rhetoric 1.4.3
http://www.chessrhetoric.com/

on Fri 27 Nov 2015, 12:48 am by · on Fri 27 Nov 2015, 12:48 am by

Overall elo to compare to v.1.4.1?

on Fri 27 Nov 2015, 11:07 am by · on Fri 27 Nov 2015, 11:07 am by

@chess-forever wrote:Overall elo to compare to v.1.4.1?

40 Elo tops probably.

on Fri 29 Jan 2016, 3:41 pm by · on Fri 29 Jan 2016, 3:41 pm by

Rhetoric 1.4.3

http://www.chessrhetoric.com/