A grid-based logic puzzle
Color each cell black or white… and give your brain a workout.
Get Some Puzzles
The Open page
The Open page is where you pick what to play. At the top, the Collection dropdown lists the
difficulty levels (Easy → Mad), followed by your own puzzles and any playlists you have created. Next to it,
the + button creates a new playlist, the file button imports puzzles from a file, and the trash
button deletes the current playlist if you own it.
The Shuffle toggle plays puzzles in random order. Below it, filters let you narrow the list: grid size, the constraint types you want to see or avoid, and whether to keep puzzles you have already played or skipped. The number shown above the Play button tells you how many puzzles match the active filters, and a small reset button next to each filter brings the default value back.