Two discoveries in Japan
According to a history by the puzzle publisher Conceptis, in 1987 Non Ishida in Japan got the idea from grid pictures made with lit windows on a building. Around the same time, puzzle author Tetsuya Nishio independently came up with the same kind of puzzle. Both ideas appeared in Japanese puzzle publications in 1988. Source: Conceptis history ↗
The name “nonogram”
In 1990, James Dalgety in the UK named them Nonograms after Non Ishida, and the puzzles were introduced in the British newspaper The Sunday Telegraph. This helped grid pictures that began in Japan reach readers in other languages. Source: Conceptis ↗
Different names, familiar rules
In Korea you’ll find them as Nemonemo Logic; in English, as Nonograms or Paint by Numbers, among other names. Whatever the name, the core is the same: fill runs of squares to match the numbers, find the empty squares between runs, and complete the picture.
Empty squares are part of the picture
In this puzzle, an × isn’t a mark of failure. It’s an important discovery: “nothing gets filled here.” Each certain empty square narrows the space where the numbers can go, so you can work out the next square.
Your own play routine
- Start slowly with big numbers and lines that fit exactly.
- Leave an × on settled empty squares to keep your thinking tidy.
- Don’t stick to one direction — switch between rows and columns.
- When you finish, take a moment to enjoy your little picture.