Normal Sudoku rules apply.
Killer Sudoku rules apply: The sum of all digits in a cage must match the number printed in its corner, if given. Digits may not repeat within a cage.
Disjoint Group rules apply: cells with the same position in 3x3 boxes contains number from 1 to 9 i.e. no number can repeat in the same position in 3x3 boxes.
Kropki rules apply: Cells joined by a white dot must be in consecutive. Cells joined by a black dot must be in a ratio 1:2. (No negative constraint applies).
Finally, cells containing the same colour must contain the same digit.
This puzzle can be found online at F-Puzzles.
Solution code: Column 1
on 28. December 2020, 20:34 by MrBeachHut
Absolutely brilliant! Monstrous (in a good way) epic, took a while and I solved it in a very inefficient way but a brilliant puzzle nonetheless. Well done.