Light Up (Akari)

Easy Light Up uses a 5×5 grid with roughly 30% wall density. Most walls are numbered, giving you direct information about how many bulbs belong next to each one. If this is your first akari puzzle, start here — the small grid means light rays are short and conflicts are easy to spot.

Start with 0-walls to eliminate adjacent cells, then look for walls whose number matches their open neighbor count. On a 5×5 grid, one or two forced walls usually cascade into a full solution. Use the light-ray visualization to track which cells are already illuminated.

Easy puzzles are ideal for learning the three rules: illumination, no mutual visibility, and numbered wall constraints. Once you solve these consistently in under 2 minutes, move to medium (7×7).