Rat's House - Nonogram

Rat's House - Nonogram is a straightforward nonogram, one of the purest deduction puzzle formats there is: numbered clues along each row and column tell you exactly how many filled cells appear in that line and how they're grouped, and from those numbers alone you work out which cells to fill to reveal a hidden picture. There's no guessing built into a well-formed nonogram — every cell's state can, in principle, be deduced logically from the clues surrounding it, which is why the format is a favorite among players who want pure logic with no luck involved. Working room by room keeps each puzzle a manageable size, building up technique gradually instead of an intimidating full grid. It's an excellent entry point if you've heard of nonograms (sometimes called Picross) but haven't tried one yet. Free to play in the browser, no download required.