Nonogram — Endless Picture Logic

Every number beside a row or column is a run of filled squares, in order, with at least one gap between runs. That is the entire rule, and everything else follows from it by pure logic — no guessing is ever required. Levels are generated, not hand-placed, so they never run out. Level 47 is the same puzzle for every player, and the grid grows from 5×5 up to 15×15 along a difficulty curve that rises fast at first and then flattens, so early levels teach and late levels stay hard without becoming unfair. A clue is struck through the moment its line is satisfied, so what is left to work out is always the only thing still legible. Filling a square that should be empty costs a point; a flawless clear is three stars. Stars accumulate into a rank — Novice, Bronze, Silver, Gold, Platinum, Diamond — and your progress never goes backwards, no matter how badly you replay an old level.