puzzle

Part 1 — Ten coins in five lines of four From Enigma — the big book of brain-teasers and games of logic (2008), Fabrice Mazza, Sylvain Lhullier, p. 90: Arrange these ten coins into five lines, each ...

Solve the math puzzle from our June 2026 issue, where an ant navigates the surface of various objects to find the shortest path to her dinner.

I recently sent this killer sudoku to my dad and he managed to solve it fully before realising that one of his sums was off by one (think 7+7=13). All other rules and constraints were followed in his ...

Solve the math puzzle from our April 2026 issue, where we plant floras to celebrate an upcoming nuptial.

Solve the math puzzle from our December 2025 issue, in which a holiday gift exchange occurs.