Light Burst-Puzzle Game

The game consists of a grid of lights. When the game starts, a sequence of these lights is switched on. Pressing any of the lights will toggle it and the four adjacent lights.
The goal of the puzzle is to switch all the lights off, preferably in as few button presses as possible.
This will restart the current game. Note, it does not re-set your score, or the number of tiles pressed so far. Those continue from when the game was first started.
You can click on the solution button to see which tiles are part of the solution. This will display for a few seconds and then disappear. Each time you use this however, your score will be significantly reduced.
Click on the settings button to change the size and color of the grid. You can also change the difficulty level of the puzzle by increasing the sequence length.