Who have more sisters: boys or girls?22 December 16
If you are spending time with siblings this Christmas, ponder this question: on average who have more sisters, boys or girls?
Fifty-two of you have been captured by an evil tyrant with a taste for Russian Roulette. Can you escape?
The puzzle of the two Black Queens4 September 15
A puzzle with an answer many people will find counterintuitive.
A real life puzzle with an answer that isn't obvious.
Cheryl and the Perfect Logicians13 April 15
The Cheryl birthday puzzle that recently went viral has opened a can of worms.
A trivia question that led to the pastime of Tubewhacking
The Irksome Tuesday Boy Problem3 November 13
The answer to this 'classic' puzzle depends entirely on the motives of the person who poses it.
The Sloppy Monty Hall Puzzle9 September 13
The Monty Hall puzzle is rarely presented properly
The Ice Cream Puzzle22 July 13
Teenagers and students understandably find this puzzle hard. What's worrying is they don't check their answer makes sense.