Logic Masters Deutschland e.V.

Rules:

-Normal sudoku rules apply: In every row, column and 3x3 box, all digits 1-9 appear exactly once.

-Kropki Pairs rules apply: On a black dot, numbers have to be in a 1:2 ratio. On a white dot, numbers have to be consecutive.

-XV rules apply: On an X, digits have to sum to 10. On a V, digits have to sum to 5.

-Neither Kropki Pairs nor XV has a negative constraint. Dominoes without X, V or dot may still sum to 5 or 10, be consecutive, or be in a 1:2 ratio.

This puzzle has two possible break-ins that, despite being completely different, are of similar difficulty and give the same initial digits.

Click here to play this puzzle on f-puzzles.

NOTE: This puzzle initially had incorrect instructions for the solution code. This has now been fixed.