XL 25 Knights Game

Instructions
Clicking on a button will toggle the state of that button and of all the buttons that a knight could move to in a game of chess (any buttons that are on will turn off and vice versa). The aim of the game is to switch all of the lights on.

If you want to start the current game again, press the reset button

To see the shortest solution, press the solve button. The highlighted buttons are the ones you need to push. To resume play, press the solve button again.

To play a new, random puzzle - press the New Game button

Enter Your Own Puzzle
Press the mode button to change to "create" mode. You can then turn the lights on and off individually. You can check if your puzzle is solvable by pressing the solve button. If a solution is shown - you're OK. To clear the board, press the clear button. To change back to "play" mode, press the mode button again.