Theme: Waves
Author/Opus: This is the 5th puzzle from guest contributor Rajesh Kumar.
Rules: Standard Sudoku rules. Also, cells with a square contain an even digit; cells with a circle contain an odd digit.
Difficulty: 3 stars
Time Standards (highlight to view): Grandmaster = 3:15, Master = 5:45, Expert = 11:30
Solution: PDF
Note: Follow this link for other Even/Odd Sudoku. Follow this link for classic Sudoku.
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
Solution: PDF
Note: Follow this link for other Even/Odd Sudoku. Follow this link for classic Sudoku.
Theme: In Memory of Florian Kirch (FK)
Author/Opus: This is the 278th puzzle from our contributing puzzlemaster Serkan Yürekli.
Rules: Standard Tight Fit Sudoku rules. Also, digits within a grey square must be even and digits within a grey circle must be odd. The range of this puzzle is 1-9.
Answer String: Enter the 1st row from left to right, followed by a comma, followed by the 6th row from left to right. (Note: for the tight fit cells, enter the top before the bottom as would be normal for the read order.)
Time Standards (highlight to view): Grandmaster = 2:45, Master = 5:45, Expert = 11:30
Solution: PDF
Note: Follow this link for other Tight Fit Sudoku puzzles on this website. If you are new to this puzzle type, here are our easiest Tight Fit Sudoku to get started on.
Theme: Odd Box
Author/Opus: This is the 34th 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 3rd row from left to right, followed by a comma, followed by the 6th row from left to right.
Time Standards (highlight to view): Grandmaster = 4:30, Master = 8:00, Expert = 16:00
Solution: PDF
Note: Follow this link for other Even/Odd Sudoku. Follow this link for classic Sudoku.
Theme: Even Box
Author/Opus: This is the 33rd 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 3rd row from left to right, followed by a comma, followed by the 7th row from left to right.
Time Standards (highlight to view): Grandmaster = 3:00, Master = 3:30, Expert = 7:00
Solution: PDF
Note: Follow this link for other Even/Odd Sudoku. Follow this link for classic Sudoku.
Theme: 23
Author/Opus: This is the 21st puzzle from guest contributor 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 1st row from left to right, followed by a comma, followed by the 5th row from left to right.
Time Standards (highlight to view): Grandmaster = 6:45, Master = 8:30, Expert = 17:00
Solution: PDF
Note: Follow this link for other Even/Odd Sudoku. Follow this link for classic Sudoku.
Theme: Nothing in the Middle
Author/Opus: This is the 1st puzzle from guest contributor Akash Doulani.
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 3rd row from left to right, followed by a comma, followed by the 6th row from left to right.
Time Standards (highlight to view): Grandmaster = 3:00, Master = 4:45, Expert = 9:30
Solution: PDF
Note: Follow this link for other Even/Odd Sudoku. Follow this link for classic Sudoku.