4 by 4

Sixteen squares, four hidden groups of four, four mistakes — in the style of the New York Times Connections, but built from words you choose. Your inputs flavour the grid rather than the answers, so the groups you spot first are usually the wrong ones.

Your inputs — all optional

Your inputs steer the subject matter and the traps — they need not appear in the grid. The same inputs give a different puzzle every time.

Sample puzzle

Play this one to see the shape of it, then generate your own.

Mistakes left