Logic Masters Deutschland e.V.

I believe that is a hard puzzle and it must be resolved with caution because it is easy to make a false conclusion.

Rules:

• Normal Sudoku rules apply.
• Digits in a cage cannot repeat and must sum to the small clue in the top left corner of the cage.
• Blue lines are '2-union equal sum lines', and for each line has a cell that acts as a pivot(to be discovered by the solver), that will split the line in 2 'equal sum lines' and the value of the pivot will count for both lines, each 'equal sum lines' will pass for at least 2 boxes and can have different sum than the other line. A 'equal sum lines' is a line that, the digits along these line must have the same sum in each 3x3 box entered by the line. The sum applies to each individual visit a line makes to a box.
• The grid contains nine 'multipliers', one in each row, column and 3x3 box, each digit from 1-9 is a 'multiplier' exactly once. Odd digits will be multiplied by two and the even digits will be multiplied by half for the purposes of the lines.

A small exemple of grid with this rules:

The red circles are the multipliers and the blue square is the pivot of the line.

Solve online:

• CtC Link
• F-Puzzles Link