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Lichess is built on Symfony2, which is under heavy development and has very few documentation at the moment.
It requires APC. It's a free and open opcode cache for PHP.
Get the code
git clone git://github.com/ornicar/lichess.git cd lichess git submodule init git submodule update
Create data folder
Open your browser at http://myhostname/index_dev.php
Configure Artificial Intelligence
The default AI is crafty, a opensource program written in C.
Install crafty on Debian based distros:
sudo apt-get install crafty
If you can't or don't want to install crafty, you can use a
# lichess/config/lichess.yml parameters: lichess.ai.class: "Bundle\LichessBundle\Ai\Stupid"
Before doing any modification to the code, you should be able to run the test suite. You need PHPUnit 3.5 installed.
Run all unit and functional tests
phpunit -c lichess