Blackout

Classic game of blackout (lights out), make all the squares black!

Every puzzle is solvable.

Interface explanation:

• The dot button in the top left resets the puzzle
• The menu button in the top right lets you change the size of the board
• The H button in the bottom left is the hint button: it makes the optimal move to solve the board
• The S button in the bottom right is the skip button: it generates another puzzle
• The squares at the bottom become grey when you don't make an optimal move

Source code: https://github.com/jacopograndi/blackout