Connect every circle with exactly one star by a path along the grid lines. The number in a circle indicates the lengths of the longest straight line of the path. All the intersections of the dotted lines must be visited exactly once. Each star must be connected to exactly one circle.
(Rules and example from WPC 2016 IB)
History of the puzzle
Invented by Naoki Inaba (Japan) in 2001 under the name MAXレングス (lit. "MAX Length"). First appeared on his website.
Appearances in the past WPCs
- WPC 2016/Round 8 by Matúš Demiger