Normal Sudoku rules: Each row, column and 3x3 box must contain the digits 1-9 once only.
Normal Knight's constraint: Cells that are a chess Knight's move apart from each other cannot contain the same digit.
Normal Arrows: Digits along arrow paths must sum to the total in their circle.
Normal Thermometers: Digits along the thick grey line must increase from the bulb (circle) end of the line.
Normal Little Killer clues: A number outside the grid indicates the sum of the digits along its diagonal.
f-puzzles: https://f-puzzles.com/?id=yazzecmg
CtC: https://tinyurl.com/3xw7afhj
Solution code: Row 5, Row 8 (18 digits)
on 18. March 2022, 00:06 by antiknight
Nice logic and puzzle apiyo ! Thanks for setting it up.