Main content
Puzzle for Today
Puzzle No. 4 – Thursday 6 July
John says that Justin is a liar.
Justin says that Tom is a liar.
Tom says that Justin and John are liars.
Who is telling the truth?
Clarification: for the purposes of this puzzle all persons involved either always tell the truth, or always lie.
Puzzle set by Alex Bellos
-
![]()
Puzzle for Today – Index
Find all of the currently available Puzzles for Today, with answers.
More fiendish brain-teasers and quizzes on BBC Radio...
-
![]()
Radio 4 Quizzes
From autumn leaves to the magic roundabout: test yourself with our favourite quizzes.
-
![]()
Pit yourself against the GCHQ Puzzle Master...
We asked the intelligence agency to set our listeners a code-cracking challenge... Can you solve it?
-
![]()
Quiz: How many of these Mastermind music questions can you answer?
Here's a chance to find out whether your specialist subject on Mastermind could be the entire history of music.
-
![]()
Can you solve six great riddles?
Six conundrums to grapple with, including the Riddle of the Sphinx. Try not to forfeit your life...
