Crossing Lines

Rules

Draw two lines with ends on the marked points on the grid border and crossing cells diagonally. The lines may not touch the grid border except on the end cells. The lines cannot pass through the grey cells and may intersect only in the marked cells. Clues show the number of turns lines have along the grid line.

(Rules and example from WPC 2015 IB)

History of the puzzle

This puzzle can be seen as a variant of Laser with two lines. Probably first appeared on WPC 2015/Round 4. Author of the puzzle was Svetlozar Stefanov (Bulgaria).

Appearances in the past WPCs

• WPC 2015/Round 4 by Svetlozar Stefanov