Today’s brain-manglers come from Tadao Kitazawa, a prolific creator of maths and logic puzzles from Japan. Over the last two decades he has introduced many original ideas, and given new twists to established genres.
Puzzles, he writes, are about having fun with limited information. He tries to devise problems that look complicated at first sight, but that are very simple once you are on the right track. Are you feline lucky?
