user5861: I use the LokaSoft web service for 5-piece endgames, but cannot find one for 6 pieces.
BTW, by web service I mean a software function capable of being called over the internet (see http://en.wikipedia.org/wiki/Web_service), not simply a service being offered on the web.

user3357: Nalimov tablebases allow up to 6 pieces including the Kings,http://www.k4it.de/?topic=egtb&lang=en

user3480: We can find several website giving 6-piece endgame tablebase, the tricky part is probably the way you want the information back.
Here is 2 examples of endgame tablebase :

http://www.shredderchess.com/online-chess/online-databases/endgame-database.html
http://chessok.com/?page_id=361

In both of this example you can ask a position by putting FEN code, so there is probably a way to use it as a webservice. (Perhaps you'll have to use a script)
Also another suggestion, on the link section of http://en.wikipedia.org/wiki/Endgame_tablebase you can find Nalimove database and try to make it communicate with your software.

5861: <p>I use the LokaSoft web service for 5-piece endgames, but cannot find one for 6 pieces.</p>

<p>BTW, by web service I mean a software function capable of being called over the internet (see <a href="http://en.wikipedia.org/wiki/Web_service" rel="nofollow">http://en.wikipedia.org/wiki/Web_service</a>), not simply a service being offered on the web.</p>
 3357: <p>Nalimov tablebases allow up to 6 pieces including the Kings,<a href="http://www.k4it.de/?topic=egtb&amp;lang=en" rel="nofollow">http://www.k4it.de/?topic=egtb&amp;lang=en</a></p>
 3480: <p>We can find several website giving 6-piece endgame tablebase, the tricky part is probably the way you want the information back.
Here is 2 examples of endgame tablebase :</p>

<ul>
<li><a href="http://www.shredderchess.com/online-chess/online-databases/endgame-database.html" rel="nofollow">http://www.shredderchess.com/online-chess/online-databases/endgame-database.html</a></li>
<li><a href="http://chessok.com/?page_id=361" rel="nofollow">http://chessok.com/?page_id=361</a></li>
</ul>

<p>In both of this example you can ask a position by putting FEN code, so there is probably a way to use it as a webservice. (Perhaps you'll have to use a script)</p>

<p>Also another suggestion, on the link section of <a href="http://en.wikipedia.org/wiki/Endgame_tablebase" rel="nofollow">http://en.wikipedia.org/wiki/Endgame_tablebase</a> you can find Nalimove database and try to make it communicate with your software.</p>
