SudokuPad link (via tinyURL)
F-puzzles link
Normal Sudoku rules apply. Place the digits 1 through 6 in each empty cell. Digits must not repeat within the same row, column, or box.
Renban: digits along a purple line form an unordered set of consecutive digits (note, purple 'X' shapes are two intersecting renban lines, not 4-cell renban);
Odd/Even: digits on grey circles are odd
Solution code: column 6 (top to bottom) followed by row 6 (left to right), no spaces.
on 30. November 2022, 04:30 by wisty
Really neat concept!
on 23. October 2022, 22:09 by mormagli
Fixed typo in rules re. Intersecting renban lines.