Today, Ame made a puzzle. She wasn't sure if it was solvable.   Being the maths nerd that I am, she asked if I would help figure out if and how it could be solved.   I couldn't figure it out, so I wrote a program to do it instead.   It took the program 3 minutes and 5 million 'moves' to solve the puzzle.   We decided to put the puzzle in game.   I hope you're all looking forward to E18.