Through the years of teaching logic, one of our most popular and requested lessons is one where we teach students to solve The Shady Puzzle™.

Devised by Dr. Mark Nowacki, to teach logic to university students, The Shady Puzzle™ has been part of the LogicMills curriculum from the very beginning.

These puzzles are now under the care of game development and consulting firm LambdaMu Pte Ltd, who create new puzzles everyday, and aim to promote these thinking games all over the world.

Try your hand at solving these unbelievably addictive puzzles and find out why it's been one of our most requested lessons. LambdaMu posts new puzzles every single weekday on the official Shady Puzzle™ website.

Be part of The Shady Puzzle Project and show it to your friends. Help us spread logic around in a fun way!