Logic puzzles
Get cracking: work as a team to solve our festive puzzle, says GCHQ
The signals intelligence agency has sent out a challenge aimed at secondary school children on its Christmas card
Dan Sabbagh Defence and security editor
14, Dec, 2022 @12:01 AM
Did you solve it? Could it be logic?
The answers to today’s puzzles
Alex Bellos
22, Aug, 2022 @4:00 PM
Can you solve it? Could it be logic?
(Solving) it only takes a minute, girl
Alex Bellos
22, Aug, 2022 @6:11 AM
Can you solve it? Intrigue at the pet hotel
Purr-plexing problems from Japan
Alex Bellos
30, May, 2022 @6:10 AM
Can you solve it? An Oxford University admissions question
Hands on buzzers
Alex Bellos
21, Feb, 2022 @7:10 AM
Did you solve it? Gödel’s incompleteness theorem
The solution to today’s puzzle
Alex Bellos
10, Jan, 2022 @4:59 PM
Can you solve it? Gödel’s incompleteness theorem
The proof that rocked maths
Alex Bellos
10, Jan, 2022 @7:10 AM
Did you solve it? Logical philosophers
The solutions to today’s puzzles
Alex Bellos
23, Aug, 2021 @4:00 PM
Did you solve it? Oxford university admissions questions
The answers to today’s logical conundrums
Alex Bellos
12, Jul, 2021 @4:00 PM
Did you solve it? A head for hats
The solution to today’s problem
Alex Bellos
11, Jan, 2021 @5:00 PM
Can you solve it? A head for hats
A Q about a queue
Alex Bellos
11, Jan, 2021 @7:13 AM
Can you solve it? The colourful truth about elves
Logic with Santa’s little helpers
Alex Bellos
14, Dec, 2020 @7:13 AM
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