Map Colouring Puzzles: How to Use the Fewest Colours
Colour every region so neighbours differ, with as few colours as possible. Dots and lines, greedy colouring, backtracking, a worked map and a practice puzzle.
Riddle10 blog
Riddle10 blog
Colour every region so neighbours differ, with as few colours as possible. Dots and lines, greedy colouring, backtracking, a worked map and a practice puzzle.