██╗ ██╗███╗ ██╗██╗ ██╗████████╗██╗ ██╗
██║ ██╔╝████╗ ██║██║ ██║╚══██╔══╝██║ ██║
█████╔╝ ██╔██╗ ██║██║ ██║ ██║ ███████║
██╔═██╗ ██║╚██╗██║██║ ██║ ██║ ██╔══██║
██║ ██╗██║ ╚████║╚██████╔╝ ██║ ██║ ██║
╚═╝ ╚═╝╚═╝ ╚═══╝ ╚═════╝ ╚═╝ ╚═╝ ╚═╝
Interactive backtracking demo