Deep Saros ver. 4.1.6 released.

After a decent performance obtained in the last tournament of Graham Banks (Don Daley Tribute), I wanted to make more efficient the engine.
DeepSaros wasted many points against weaker opponents, so I implemented a rudimentary function of contempt.

They were also introduced several optimizations, to make the search faster and more efficiently.

The value of the units and the weights of the positional factors have been balanced. The engine now is more balanced and objective in his evaluations.

For installation, follow the instructions in the file 'ReadMe.txt'. To adjust the parameters, read the file 'parameters.txt'. 

For download, see the Downloads Page.

Version 4.1.3c is released.

- correct a serious bug in Time Manager;
- allow the Fisher Random mode (Chess 960);
- correct a bug in Draw Factor.

Go to download page...

Don Dailey Tribute 8CPU (starting soon)

Graham Banks has just started a tournament in memory of the late Don Daley. Deep Saros still suffers of a not optimal Time Manager, but this is a good opportunity to see if he is worthy to aspire to fight with the best engines...

Xeon X5430x2 Octal
ChessGUI
2048mb hash per engine where possible
3-4-5 piece tablebases
Ponder off
ICCFMasters2011.cgb book (limited to 12 move depth)
40 moves in 29 minutes repeating (equivalent to CCRL 40/40)
All engines 64-bit 8CPU where available
2 cycles 26 rounds

Participants

Houdini 4 64-bit 8CPU
Komodo TCEC 64-bit 8CPU
Stockfish DD 64-bit 8CPU
Critter 1.6a 64-bit 8CPU
Rybka 4.1 64-bit 8CPU
Bouquet 1.8 64-bit 8CPU
Gull 2.3 64-bit 8CPU
DeepSaros 4.1.3b 64-bit 8CPU
Sting SF 4 8CPU
Hannibal 1.4b 64-bit 8CPU
Protector 1.5.0 64-bit 8CPU
Chiron 1.5 64-bit 8CPU
Hiarcs 14 8CPU
Deep Junior Yokohama 64-bit 8CPU

Deep Saros ver. 4.1.3b released.

News:

- some experiments in low depth search
- draw factor parameter (contempt)
- PV Hash parameter

Download it in the Download Page...

DeepSaros ver. 4.1.2 it has not been prepared for the challenges against other engines, this is not his goal, but it's a chess engine designed exclusively for chess players who are searching variants and game plans sharp and speculative.
 
Here are some examples of how it is possible, using DeepSaros 4.1.2 to find continuations original and elegantly.

Karpov - Gelfand. Linares, 1993.

In this position, DeepSaros offers immediately the move used by Karpov in the game: 1.Rd1-d5!

Minasian-Jonkman. Anibal op, 2000

Even in this position DeepSaros suggest: 1.Rd1xd6!

Another nice position:

Karpov-Kasparov. New York, 1991

Here, all chess engines suggest the move: 1.Bf8, with draw... But not DeepSaros!
He embraces the choice, brave and speculative, of Gary Kasparov and play 1.Rxe3!


These choices are the best ever?
Probably not. Against a computer, no ... But against a human player, I say yes!
The psychological effect is very important in chess, and that's why the moves unusual and surprising, often have a deadly effect.
Take, eg., the last diagram. Maybe Houdini able to resist the sacrifice of the Black, but a human being? Even a great champion like karpov did not succeed...
 

A small but annoying bug has been detected and corrected.
Our company apologizes to customers. The correct version of the engine can be downloaded HERE, at no additional cost.

This is not a new version, but the necessary replacement.

Our Customer Service apologizes for the inconvenience. The programmer will be punished with 50 lashes on his back.


Signed:
The Galactic General Manager

The national team of Nordic skiing of Western Sahara would like to thank all those who have downloaded DeepSaros.

Thanks for the help, guys!!

Deep Saros ver. 4.1.3

Ok, this version seems quite competitive, and should not make a bad impression...

DeepSaros now supports the new Robbabases through dynamic link library, as in the latest versions of Ivanhoe:

• To use the Robbabases, in windows version, you must put the file "RobboBaseLib.dll" in the same folder of the engine, or in the immediately higher.

• To use the Robbabases, in linux version, you must put the file "RobboBaseLib.so" in the same folder of the engine, or in the immediately higher.

A tip: assign to PawnsHash, about 1/8 of the Hash.

You can also try to assign 1/4 of the Hash...

Download DeepSaros ver. 4.1.3

Price: Deep Saros costs lots of money ... $ 0.000, but the 0, 0001% of revenues will be paid to the Nordic ski team of the Western Sahara.

Aloha!

 

The latest version was a bit "merry". At this moment, I'm testing the new version 4.1.3 which is proving quite competitive.
To check if the engine sounds good, I'm running a match against Stockfish (24 games).

CPU : AMD 8350-FX 8 cores
O.S. : Windows-7 Ultimate Professional (SP-1)
GUI : Arena 3.0
Book: "Libra 8 moves.abk"
Hash : 2048 MBytes
No TB
Time : 60 min. / game


Partial result (after 6 games):

DeepSaros_test-004
ATTILA, 2013.11.27 - 2013.11.28
Punteggio medio: 3000  (Categoria 30)
                                  Rtng    Score     123456   Perf Chg
----------------------------------------------------------------------
 1: DeepSaros_413_popcnt_w64      3000   3.5 /  6   1==0=1   3057  +5
 2: Stockfish_13111017_x64_modern 3000   2.5 /  6   0==1=0   2943  -5
----------------------------------------------------------------------
6 games: +2 =3 -1

The match will continue tonight, with other 6 games...

The engine is doing well! I have not tested it on short time controls (blitz, bullet, etc.), but, frankly, they do not interest me.

Download PGN of first 6 games 

Deep Saros ver. 4.1.2 "Dynamic".

This is an experimental version which focuses on the dynamic game.

It is not suited to the challenges "computer Vs. computer", but I prepared for personal use. The goal of this release is to find sharp and original variations for O.T.B. players.

This version is not appropriate for lovers of exciting tests based on thousands of one-minut-games!

 Download: DeepSaros ver. 4.1.2 "Dynamic"

Haste is a bad counselor...
This version is substantially equal to the previous one, but corrects an annoying defect of the Time Manager.

Download DeepSaros 4.1.1 

Version 4.1.0 is now ready!

• fixed a stupid error in the 32-bit versions;
• correction of some minor bugs (increased playing strength?);
• changed the Time Manager (though, I'm still not satisfied);
• some changes in the evaluation functions (increased playing strength?);

Download ver. 4.1.0

DeepSaros 4.0.0 is an U.C.I. chess engine derived from the free engine Ivanhoe ver. 999952a.
DeepSaros is, for me, essentially a toy to have fun and experiment


New in this version:

• Time Manager completely rewritten;
• Refinement of the evaluation functions;
• some experiments in a search function and in the cutting of nodes;
• Fix some bugs.

Downolad (include 32 bit versions!)