What is the name of this book?

by Raymond M. Smullyan

"In his most critically acclaimed work, a well-known mathematician, magician, and author spins a logical labyrinth of more than 200 increasingly complex and challenging problems - puzzles that delve into some of the deepest paradoxes of logic and set theory. Solutions."The most original, most profound, and most humorous collection of recreational logic and math problems ever written." - Martin Gardner"--