The link doesn't work for me.
I put up a page where people can practice checkmating with an Elephant (as well as many other unorthodox pieces). It can be found at http://hgm.nubati.net/rules/EGT.html.
Have fun!
Musketeer Chess Endgame, King + Elephant vs King
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http://musketeerchess.net/forum/viewtopic.php?f=5&t=478