Advent of Code 2021 - Day 23

Controls Click a cell: Select cellArrow Keys: Move selected cellA, B, C, D: Change selected cell to a new valueZ: Undo moves P: Show replay of your moves R: Reset the game. Modified cells keep their new values. This implementation does not enforce all of the games movement rules. Detailed rules can be found here: https://adventofcode.com/2021/day/23