King, Bishop, and Knight against King

Black to play and checkmate in three moves

This is the hardest of the elementary mates.  If you're stuck, let International Master Jan Van de Mortel help you with the first move (there's more than one way to do it).  Van de Mortel led the Chicago Blaze to a blowout 3.5-0.5 win over the Dallas Destiny last Wednesday.  Tom Panelas provided his usual excellent coverage on the Illinois Chess Association website.  The Blaze plays its final U.S. Chess League match of the season tonight: please feel free to stop by the Holiday Inn Chicago North Shore (5300 W. Touhy in Skokie: 1/2 mile west of the Edens) to spectate.