Raymond Smullyan

Raymond Smullyan (1919-2017) was a mathematician, concert pianist, magician, and author of numerous books of logic puzzles, chess puzzles, mathematics, philosophy and memoir. His startlingly brilliant and original puzzle books, of a genre largely invented by him, won him a global following. They are both delightfully approachable and devilishly challenging, leading the reader by degrees from elementary puzzles to deep results in mathematical logic.