Land and Sea
Rules[edit]
Draw a single, non-intersecting loop that passes orthogonally through all cells. The loop must not go through 3 or more white cells consecutively.
(Example from WPC 2018 IB)
History of the puzzle[edit]
Invented by Naoki Inaba (Japan) in 2006. [1] The name is a literal translation of the original "海と陸".
Appearances in the past WPCs[edit]
- WPC 2018/Round 7 by Jan Zvěřina