Simple open source program wanted

[rreagan]

I am looking for a simple open source chess engine. The goal is to port it to other languages, as a learning exercise to learn other languages.

So the main criteria is that it should be simple. The fewer features the better. A minimal perft calculator would be sufficient.

I would like it if I could find several simple engines to work from. Maybe one written in a procedural style, and another written in a more object oriented style.

[silentshark]

I am looking for a simple open source chess engine. The goal is to port it to other languages, as a learning exercise to learn other languages.

So the main criteria is that it should be simple. The fewer features the better. A minimal perft calculator would be sufficient.

I would like it if I could find several simple engines to work from. Maybe one written in a procedural style, and another written in a more object oriented style.

tscp? http://www.tckerrigan.com/Chess/TSCP

[JVMerlino]

Firstchess is another good choice.

http://www.devweb.cl/atari/cc65/FirstChess.c

[alpha123]

Micro-Max (I forget the link).

Peter

[schlucke]

Micro-Max (I forget the link).

Peter

Here you go: http://home.hccnet.nl/h.g.muller/max-src2.html

[schlucke]

I am looking for a simple open source chess engine. The goal is to port it to other languages, as a learning exercise to learn other languages.

So the main criteria is that it should be simple. The fewer features the better. A minimal perft calculator would be sufficient.

I would like it if I could find several simple engines to work from. Maybe one written in a procedural style, and another written in a more object oriented style.

And this one is my favourite, but without perft and comments

http://www.glaurungchess.com/viper/

[Dann Corbit]

I am looking for a simple open source chess engine. The goal is to port it to other languages, as a learning exercise to learn other languages.

So the main criteria is that it should be simple. The fewer features the better. A minimal perft calculator would be sufficient.

I would like it if I could find several simple engines to work from. Maybe one written in a procedural style, and another written in a more object oriented style.

This is a much better design than TSCP, MSCP and far easier to understand than programs designed for maximal terseness.
http://www.3dkingdoms.com/chess/sam/samchess.html

Another good choice would be Olithink. Before embarking on the project I would consult with the authors of the programs.

[bhlangonijr]

In my opinion the best one is Sungorous, written by Pablo Vasques:
http://sites.google.com/site/sungorus/

It is written with a very clean and straightforward C code. The entire search code has only 154 lines of code. Although the code base of Sungorus is relatively small, it has a lot of important features such as a good move ordering function, hash tables, null move pruning (the version 1.2 had also LMR, but it seems the author removed it for some reason), fast move generation, etc

Currently the engine is #142 on CCRL with 2350 ELO.

[Dann Corbit]

In my opinion the best one is Sungorous, written by Pablo Vasques:
http://sites.google.com/site/sungorus/

It is written with a very clean and straightforward C code. The entire search code has only 154 lines of code. Although the code base of Sungorus is relatively small, it has a lot of important features such as a good move ordering function, hash tables, null move pruning (the version 1.2 had also LMR, but it seems the author removed it for some reason), fast move generation, etc

Currently the engine is #142 on CCRL with 2350 ELO.

I just took a look, and you are right. This program is an excellent starting point.

[WinPooh]

You can take a look at GreKo. Some people say it is relatively readable.