Blacken some cells and draw a closed loop that passes each of the remaining cell exactly once. The loop goes from the center of one cell to the center of a horizontally or vertically adjacent cell.
Numbers to the left of the grid and above indicate the number of black cells in the respective row or column. Numbers to the right and below determine how often the loops crosses the respective line of the grid.
No two black cells must share an edge.
Solution code: For every row from top to bottom the length of the longest horizontally line
on 26. January 2023, 06:00 by TJReds
penpa: https://tinyurl.com/2jsw58su
on 7. March 2014, 07:08 by ibag
Sehr schön!