New Site https://blog.stimim.tw (under construction)
2023-09-07
Normal sudoku rules apply.
Circled cells: For digit in any kind of circle, it indicates exactly how many circles contain that digit. For example, if there is a 5 in any circle, then there are five 5s in circles.
Between Lines: The ends of between lines are marked with gray circles. Digits along a between line must be between the digits in the gray circles on both ends.