fairymax software package provides xboard compatible chess and chess-variant engine, you can install in your Debian 7 (Wheezy) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install fairymax
fairymax is installed in your system.
Make ensure the fairymax package were installed using the commands given below,
$ sudo dpkg-query -l | grep fairymax *
You will get with fairymax package name, version, architecture and description in a table
| Distro | Debian 7 wheezy |
| Section | Games |
| Package | fairymax |
| Version | 4.8q-2 |
| Description | xboard compatible chess and chess-variant engine |
| Sub Section | Games |