Dan Wulff Kristensen,
a Danish computer chess expert, opening book author, tester, operator and along with primary programmer Steen Suurballe member of the Gandalf team. Dan operated Gandalf almost at all IPCCCs from 1994 until 2007.
- New Gandalf by Dan Wulff, CCC, February 02, 2003
- PGN Cleaning utility by Dan Wulff, CCC, February 09, 2003 » Portable Game Notation
- Performance rating calculation by Dan Wulff, CCC, June 02, 2004 » Opening Book