Place bulbs, light every white square, and satisfy numbered walls in this daily Akari logic puzzle.
How to play
Place bulbs in white squares to light the entire board. Each bulb shines horizontally and vertically until a black wall blocks it.
No bulb may shine directly on another bulb. Conflicting bulbs are highlighted in red.
A number on a black wall tells you exactly how many bulbs touch it above, below, left, or right. Diagonal bulbs do not count. Unnumbered walls have no bulb-count requirement.
Tap or click to add or remove a bulb. Select Mark ×, shift-click, or right-click to note a square without a bulb. Notes are optional and can still be lit.
Use arrow keys to move between white cells, B to toggle a bulb, X to toggle a note, or Delete to erase. Undo and Redo let you revisit moves; Reset clears the board and can be undone.
Daily puzzles reset at midnight UTC and save progress in this browser. Mild is 5×5, Medium is 7×7, and Picante is 9×9. Practice lets you choose a size and generate another puzzle.
A quick example
A wall marked 0 forbids bulbs in its neighboring squares. A bulb lights every square along its row and column until it reaches a wall.