Theme: Logical (originally in Ashish’s book “Enthralling Sudoku“)
Author/Opus: This is the 40th puzzle from our contributing puzzlemaster Ashish Kumar.
Rules: Standard Sudoku rules. Also, cells with a square contain an even digit; cells with a circle contain an odd digit.
Answer String: Enter the 5th row from left to right, followed by a comma, followed by the 9th row from left to right.
Time Standards (highlight to view): Grandmaster = 7:00, Master = 9:30, Expert = 19:00