Logic Masters Deutschland e.V.

Thanks to all the testers, and especially gdc for feedback about fog and formatting.

Rules:

Normal sudoku rules apply in the main 9x9 grid.

• DYNAMIC FOG:
  • The grid is covered in fog. Placing a correct digit in a cell (either inside the 9x9 grid or the outside clues) lifts fog from that cell and possibly others.
  • All clued outside cells must be filled.
• SKYSCRAPERS:
  • Clued digits outside the grid count how many digits are 'seen' looking into the grid in the row/column. Digits are visible when they are larger than all digits before them.
• AMBIGUOUS ARROW LINES:
  • Purple lines move orthogonally through the grid and do not cross, branch or share cells with other lines.
  • For each line, one of its digits (not necessarily an end) is the sum of all its other digits.

All feedback (positive or critical) appreciated!