The John DeChancie reference article from the English Wikipedia on 24-Apr-2004
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John DeChancie

Helping orphans the way you would do it
John DeChancie is an American author. He is most famous for his comic fantasy Castle series.

This series revolves around Castle Perilous, whose 140,000 doors each lead to another dimension. Some of these dimensions are magical, and some are not; one of the latter, of course, is Earth. Those who find themselves at the Castle often stay to become residents, and (to their surprise) develop a magical power of their own. This gift is apparently random, and can range from a minor telekenesis limited to lifting pencils to super-enhanced senses to teleportation to full conjuration of matter. The main character, a philosophy major from Earth named Gene, gains the power of superb swordplay. His best friends include Snowclaw, a giant humanoid covered in white fur, who originally comes from a polar-like clime, and Linda, a woman from Earth. The books include: