Logic Masters Deutschland e.V.

This sudoku is inspired by Md88keys’ puzzle Monster Muddle. I’ll leave the link to that puzzle below if you want to check it out

Monster Muddle

This sudoku was quite difficult to construct, so hopefully there are no mistakes on my part — but if you do find any, please let me know :)

I also hope I’ve done a good enough job explaining the rules

Colour the 3×3 regions so that four separate sudokus appear:

One green XV-pair sudoku

One blue black kropki-dot sudoku

One red white kropki-dot sudoku

One yellow quadruple + positive/negative diagonal sudoku

Two regions of the same colour cannot appear next to each other in the 6×6 region grid. Each sudoku variant should be treated as an independent sudoku, and the constraints only apply within that sudoku type.

For clarification: a clue on the border between two regions only applies to the sudoku type with that constraint and only connects to a region of the same colour. The clue does not apply to the entire 6×6 region grid. It’s up to the solver to deduce the correct placement of each region within its sudoku.

Cages indicate orthogonally connected identical digits between different sudoku types. All possible cages are given.

For all four coloured sudokus, normal sudoku rules apply: the digits 1–9 must appear exactly once in every row, column, and region.

XV pairs:

Cells separated by a V sum to 5.

Cells separated by an X sum to 10.

All Vs and Xs are given.

Black kropki dots:

Cells separated by a black dot must have a 1:2 ratio.

All possible dots are given.

White kropki dots:

Cells separated by a white dot must be consecutive.

All possible dots are given.

Diagonals:

Digits along both the positive and the negative diagonal cannot repeat.

Quadruple clues:

Digits shown in a white circle must appear at least once in the four surrounding cells.

Solve online:Sudokupad

Happy solving!