550 puzzles · no guessing, ever

Nonograms

Picture logic — you may know them as griddlers, hanjie or paint-by-numbers. Every board here has exactly one solution and gives way to pure logic.

How it works

3
Numbers are block lengthsA "3" means three filled cells in a row, somewhere in that line.
2 1
Blocks keep their order — and a gap"2 1" is a block of two, at least one empty cell, then a single.
4
Start with what's certainA "4" in five cells can sit left or right — but the middle three are filled either way. No guessing, ever.

New to these? The five-technique guide covers everything a board here can ask of you.