user7441: Fairy-Max (which ships with the XBoard package) can play variant chess. Is there any other XBoard-compatible engine that also plays variant chess (and runs on Linux or *BSD)?

user9926: The XBoard Alien GUI is reputedly better suited to playing chess variants than the standard XBoard is, but that's just an observation. There are many engines that play only a few variants.
     Here's a list of engines (other than Fairy-Max) that have been noted as playing a large selection of variants and working with XBoard (Linux environment being implicit):

ChessV (plays over 50 variants)
Nebiyu Alien (a score of variants tested in homepage; many additional [user defined] .ini files available as a collective package or individually)
Pulsar
Sjaak II (Glebbeek's, not de Man's)
SMIRF


7441: <p>Fairy-Max (which ships with the XBoard package) can play variant chess. Is there any other XBoard-compatible engine that also plays variant chess (and runs on Linux or *BSD)?</p>
 9926: <p>The <b><a href="http://hgm.nubati.net/alien.html">XBoard Alien GUI</a></b> is reputedly better suited to playing chess variants than the standard XBoard is, but that's just an observation. There are many engines that play only a few variants.<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Here's a list of engines (other than Fairy-Max) that have been noted as playing a large selection of variants and working with XBoard (Linux environment being implicit):</p>

<ul>
<li><p><b><a href="http://samiam.org/chessv/">ChessV</a></b> (<i>plays over 50 variants</i>)</p></li>
<li><p><b><a href="https://sites.google.com/site/dshawul/">Nebiyu Alien</a></b> (<i>a score of variants tested in homepage; many additional [user defined] .ini files available as a <a href="http://www.solidfiles.com/d/67f321a0a9/">collective package</a> or <a href="http://immortalchess.net/forum/showthread.php?t=12308">individually</a></i>)</p></li>
<li><p><b><a href="http://www.lanternchess.com/pulsar/">Pulsar</a></b><br></p></li>
<li><p><b><a href="http://www.eglebbk.dds.nl/program/chess-">Sjaak II</a></b> (<i>Glebbeek's, not de Man's</i>)<br></p></li>
<li><p><b><a href="http://www.chessbox.de/chess/SMIRF.html">SMIRF</a></b><br></p></li>
</ul>
