Arukone ("Number Link") consists of a rectangular or square grid with numbers in some cells. The goal is to connect each pair of numbers with single continuous lines. The lines must neither cross nor touch each other. logic brain teasers with answers - puzzles and brain teasers - math brain teasers for adults - mind challenging games - mind twisters - math riddles and answers - puzzles and games for adults - brain challenge - good brain teasers - funny puzzles - brain puzzles with answers - puzzle and brain games - mental puzzles - fun brain games for adults - easy brain teasers - brain twister puzzle - riddles and brain teasers with answers - best brain teaser games - logic puzzles with answers - challenging puzzle games