Puzzle 1: You are given nine gold coins that look identical. You are told that one of them is fake, and that this coin weighs ...

This holiday-themed brainteaser looks simple, but it's quietly tripping up adults everywhere. A math teacher walks us through ...

What’s more, doing maths is often a collaborative endeavour – and can be a great source of fun and fulfilment when people ...

The rules of Sudoku dictate that every row, column and 3×3 bolded box in the completed grid must contain the digits 1 through 9 exactly once. A surprising fact emerges from these simple rules. In ...

This is a judgement-free zone for those of us who suck at Blue Prince, the hit puzzle game about exploring a weird mansion. Critics and puzzle fans say it might be one of the best games this year, ...

A classic puzzle conundrum goes like this: You’re in a room with two ropes and a box of matches. Each rope takes exactly an hour to burn all the way across, but it might burn faster through some ...