Normal Sudoku rules apply
Even Knights: Even digits must be a knights move away from an identical digit.
Cages: The digits in a cage must sum to the number printed in its corner. Digits may not repeat within a cage.
Odd Balls: Cells with a filled circle must be odd.
Inequality: R5C7 must be less than R5C8.
Solution code: row 2
on 22. December 2021, 09:22 by Chelo
Very nice puzzle, thank you!..
on 18. December 2021, 20:30 by Arlo Lipof
The knight constraint on even digits is a very nice idea, thank you!