Nonogram Picross — Griddly

Ten thousand nonograms, and not one needs a guess. Every board was proved solvable by reasoning alone before it shipped. No timers, no connection.

Ten thousand nonograms, and not one of them needs a guess.

Griddly is a nonogram — a logic puzzle on a grid. The numbers beside each row and column tell you how many squares to fill and in what runs; the rest is deduction. No timers pushing you, no lives to run out of, no connection required.

WHAT IS IN IT • 10,000 machine-verified puzzles — 3,000 at 10×10, 4,000 at 15×15, 3,000 at 20×20 • Four difficulty levels, from a few quiet minutes to a proper sit-down • A new daily puzzle, a streak to keep, and a calendar to fill • Works with no connection, on a plane, underground, anywhere

EVERY PUZZLE HAS ONE SOLUTION Every board was solved twice by two independent programs before it shipped — once to prove it has exactly one answer, once to prove that answer can be reached by reasoning alone. You will never be asked to guess and hope.

MADE TO BE PUT DOWN Your board is saved where you left it. Undo as far back as you like. Ask for a hint when a line will not come, or check your work when something feels wrong — both are there when you want them and quiet when you do not.