White to move!
Great puzzle. Took me longer than 15 seconds :) a tangential question: I would love to be able to include this black and white style board on web pages or social media. Can you advise as to tools?
a) 1...Kb8, 2. Na6+ Ka8, 3. Nb6#
b) 1...Kxc7, 2. Be5+! Kc8, 3. Nb6#