Free Triangle Nonogram Generator

A nonogram in which a square may also be half filled, cut along a diagonal (◢ ◣ ◤ ◥). The clues list numbers — blocks of full squares, as in a classic nonogram — and small triangles, each one half square of that shape. It is also called a trianogram; it comes from Slovak puzzle magazines.

Like a black and white nonogram, with one difference: two blocks of full squares always have an empty square between them, but a triangle may touch a block or another triangle, or stand apart. A square can only hold a triangle when both its row and its column list that triangle, so the shapes narrow things down fast.

Yes. No account, no credit card and no watermark across the puzzles — just a small source line at the bottom of the page.

Yes. A solver works out each puzzle with the triangle rules before it goes on the page. If the clues would allow two pictures, a few squares are printed as givens.

Not the free ones — they are for personal and classroom use only. Triangle nonogram books for sale are part of the Publisher plan, with a full commercial license.

Yes. Every PDF is generated from a new random code, so each download gives you new pictures or patterns.