My Xmas gift for CCC

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My Xmas gift for CCC

Post by Sylwy » Fri Dec 27, 2013 8:14 am

Hello folks !

Do you still remember Mr. Ruxy ???

I cut off for a few moments my four months boycott (sorry Robbo-Equinox, Miky & Ochoa team :lol: ) for a little gift: SHUTRANJ the first chess engine coming from Pakistan (via Leicester - United Kingdom).
The author is Mr. Okash Khawaja - Senior Software Engineer at Draycir Ltd Leicester.
Shutranj is a chess engine written is C# 5.0. Like features:

• evaluates over 119 million positions in ~1.4 seconds;
• bitboards for board representation, NegaMax search with Alpha-Beta pruning;
• lockless parallelised search including a shared hash table;
• search optimisations: Aspiration Windows, Killer Heuristic, Transposition Tables, Move Ordering, Iterative Deepening;
• basic Universal Chess Interface (UCI) support.

The engine has around 1800 ELO.

I received also the binaries (working only on Win Vista, 7 & 8) from its author like a Xmas gift !

Maybe somebody here will build a binary working also on Win XP (Mr. Tony Mokonen, Mr. Velmarin ???...........).

The source code is here:

The Ruxy's copyrighted logo for this engine is:


Have a nice day !
SilvianR :wink:


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Re: My Xmas gift for CCC

Post by Adam Hair » Fri Dec 27, 2013 7:07 pm

Thank you for the information, Mr. Ruxy!

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Re: My Xmas gift for CCC

Post by bhlangonijr » Fri Dec 27, 2013 10:27 pm

119 million positions in 1.4 seconds?! Does it run on quantun computers? :lol:

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Re: My Xmas gift for CCC

Post by michiguel » Fri Dec 27, 2013 11:15 pm

bhlangonijr wrote:119 million positions in 1.4 seconds?! Does it run on quantun computers? :lol:
From here ... uation2.cs

Looks like the evaluation is only material and PST. Then, I guess it may be possible that the time spent in eval is very very short. Maybe the author measured eval() it in a loop.


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Re: My Xmas gift for CCC

Post by fern » Fri Dec 27, 2013 11:23 pm

Thanks Ryx!!


so many moves examined for such a paltry Elo!!

Perhaps too much brute force approach


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