In 1996, the mathematical logician George Boolos (above) published a paper describing “the hardest logic puzzle ever” which he attributed to the logician Raymond Smullyan. The puzzle has ...

American philosopher and logician George Boolos invented the above riddle, published in the Harvard Review of Philosophy in 1996, and called it “The Hardest Logic Puzzle Ever”. The original ...

Here’s a fairly recent twist on an old type of logic puzzle. A logician vacationing in the South Pacific finds himself on an island inhabited by the two proverbial groups of liars and truth-tellers.

It was dreamt up—and solved—by US logician George Boolos shortly before his death in 1996. What makes it so difficult is it’s incredible amount of problems, all squeezed into one puzzle ...

NEW YORK — Raymond Smullyan, whose merry, agile mind led him to be a musician, a magician, a mathematician, and, most cunningly, a puzzle-creating logician, died Feb. 6 in Hudson, N.Y. He was 97.

The logician puzzle above resurfaced (slightly repackaged) in the Pyramids of Mars episode of Dr Who, from October 1975. Maths writer Simon Singh, meanwhile, says some of the Simpsons writers ...