Rodent

on Tue Mar 05, 2013 10:34 pm by · on Tue Mar 05, 2013 10:34 pm by

Rodent 1.0

http://www.pkoziol.cal24.pl/rodent/rodent_download.htm

on Wed Mar 06, 2013 10:06 am by · on Wed Mar 06, 2013 10:06 am by

I do not see any improvements of engine strength. rolleyes

on Wed Mar 06, 2013 12:36 pm by · on Wed Mar 06, 2013 12:36 pm by

can you post your test results please?

on Thu Mar 07, 2013 9:29 am by · on Thu Mar 07, 2013 9:29 am by

Rodent 1.0 JA

- silent update, version number unchanged.
- this is a 64-bit non-popcnt version only.
- the previous non-popcnt was actually a popcnt version.

https://dl.dropbox.com/u/5047625/rodent-64-ja.zip

on Mon Sep 30, 2013 6:47 pm by · on Mon Sep 30, 2013 6:47 pm by

Rodent v1.1 (source code, opening book, personalities, w32/x64)

on Mon Sep 30, 2013 7:25 pm by · on Mon Sep 30, 2013 7:25 pm by

my computer can't run the 32 bit compile

maybe I need a generic 32 bit compile

on Wed Oct 02, 2013 1:08 pm by · on Wed Oct 02, 2013 1:08 pm by

my computer can't run the 32 bit compile

I need a generic or legacy 32 bit compile

then I can run the tourney for this engine

or can anyone of us run the tourney of 100 matches? thumb up

on Thu Oct 03, 2013 11:06 am by · on Thu Oct 03, 2013 11:06 am by

@thorhammer wrote:my computer can't run the 32 bit compile

Same here. confused

on Wed Nov 06, 2013 9:32 pm by · on Wed Nov 06, 2013 9:32 pm by

no one so far mentioned the new release of rodent 1.2 yet

so I'm doing it here

I found out rodent 1.2 is released!

***

engines like rodent
glass
and others are fantastic and amazing
they even come with preset personalities!

rodent32_MSVC10.exe
rodent32.exe

rodent32_MSVC10.exe
this 32 bit version is working on old computers!

on Tue Jan 21, 2014 7:13 pm by · on Tue Jan 21, 2014 7:13 pm by

Rodent 1.3
http://www.pkoziol.cal24.pl/rodent/rodent_download.htm

it includes source code, opening book and Windows compiles. 32-bit version should work even on XP systems, as it was created using older MSVC compiler. as for Linux version, I must rely on external help.

Rodent 1.3 finally comes with a reasonable capability for creating various style settings (older versions were buggy and rather incomplete, missing parameters for pawn structure, passers and contempt). Perhaps the funniest option to expreriment with is the choice between two almost equivalent king safety functions.

There are two new personalities, Monster (mad attacker, using the alternative king safety function to the utmost) and Grumpy (solid but surprisingly relentless player, modelled after some of my elderly OTB opponents).

As for playing strength, previous version has been beaten by 54,2%. This is mainly due some tuning. LMR and move ordering tweaks (refutation and continuation moves).

on Wed Apr 30, 2014 4:35 pm by · on Wed Apr 30, 2014 4:35 pm by

The new version of Rodent by Pawel is out ! thumb up

http://www.pkoziol.cal24.pl/rodent/rodent.htm
Current version 1.4, released 30.04.2014, is mainly a bugfix edition.

on Tue Nov 04, 2014 7:28 am by · on Tue Nov 04, 2014 7:28 am by

Rodent 1.6

- bugfix to prevent hanging in endgame
- root move selection, aspiration window handling and root search are all significantly altered
- hash reuse logic has been improved

http://www.pkoziol.cal24.pl/rodent/rodent_1.6.zip

on Wed Nov 19, 2014 4:18 am by · on Wed Nov 19, 2014 4:18 am by

Rodent 'tunable'

- this is an experimental, pre-beta release not intended for official testing
- this release allows tuning of eval and creation of personalities

http://www.pkoziol.cal24.pl/rodent/tunable.zip

on Thu Mar 19, 2015 6:30 pm by · on Thu Mar 19, 2015 6:30 pm by

Rodent 1.7
http://www.pkoziol.cal24.pl/rodent/rodent_download.htm

on Mon Feb 15, 2016 5:41 pm by · on Mon Feb 15, 2016 5:41 pm by

Rodent II
http://www.pkoziol.cal24.pl/rodent/rodent_download.htm

From the author:

It is a complete rewrite, which I had to do due to some untraceable bug in 1.7 codebase, causing node discrepancies between debug and release compiles. I didn't manage to implement all the functionalities from previous codebase yet. This is actually a good news, because it leaves me with some relatively simple improvements.

Another good news is that current source is Linux compatibile, owing to several hints kindly supplied by Dave Kaye. There is also a Linux executable. Preparing 32-bit Windows version, however, will take me a couple of days.

Due to some other commitments please don't expect new Rodent before September. In the meantime, however, I invite You to create new Rodent personalities. The tuning system has matured (and has been documented), option names are finally readable also for non-programmers. It is likely that one can squeeze some more elo out of it - or some more fun, whatever you fancy. If there is enough interest, I can run a tournament of user-defined personalities.

As for playing strength, the gain over version 1.7 is really modest, something like 25 Elo. Hopefully, code is much more maintainable and will allow firther strength increase, something that has become too difficult with previous codebase.

on Mon May 23, 2016 9:37 am by · on Mon May 23, 2016 9:37 am by

Rodent II 0.9.33
http://www.pkoziol.cal24.pl/rodent/download.htm

I guess it is 2850 Elo on the CCRL scale again (previous version has dived down to 2812). I worked mainly on endgame performance, stabilizing quiescence search, adding more endgame knowledge and improving middlegame positional play, so that Rodent has a chance of surviving till endgame in a slightly better shape than it used to. Nevertheless, this is still the same messy and aggressive engine that it used to be, so have fun!

Beside that there are new parameters for tweaking personalities (preference for keeping given kind of pieces + possibility of setting opening book from personality file).

- more stable quiescence search
- more endgame knowledge, including unstoppable passers
- limiting check extension
- adding recapture extension in pv nodes
- retuning some eval parameters, including passed pawns values
- half-open files are less valuable if enemy pawn on a file is defended
- queen is less valuable with enemy minor pieces on the board
- minor pieces like to be shielded by a pawn
- internal iterative deepening in pv nodes
- mate distance pruning
- opening book can be defined in personality file (depending on basic.ini settings)
- new stylistic parameters for keeping pieces on board

As a bonus, I have changed Rodent's homepage a bit - hope You like it.

on Fri Sep 09, 2016 5:38 pm by · on Fri Sep 09, 2016 5:38 pm by

Rodent II 0.9.63 (development version git rev. 390)
-----------------------------------------------------------------------------

Windows64 and Linux64 binaries download : https://drive.google.com/open?id=0B-PM8aD2-9I4dXVySm9CZVgtRWc

If you use Rodent opening books they must be placed in SAME folder as executable.

Opening book is not included in the download but can be downloaded at Rodent's homepage.

From my tests this version is a little bit stronger than 0.9.33(latest official version).