Logic Masters Deutschland e.V.

Normal sudoku rules apply.

All lines are REGION SUM LINES (blue): box borders separate blue lines into segments with the same sum.
Each line also has one additional constraint.

• Box 1 has a MODULAR (teal) line: any sequence of three digits along the line must contain a digit from {1,4,7}, one from {2,5,8}, and one from {3,6,9}.
• One line is ENTROPIC (orange): any sequence of three digits along the line must contain a digit from {1,2,3}, one from {4,5,6}, and one from {7,8,9}.
• One line is PARITY (red): adjacent digits along the line alternate even/odd.
• One line is PALINDROME (gray): digits on the line read the same in both directions.
• One line is GERMAN WHISPER (green): adjacent digits along the line must differ by 5 or more.
• And finally, one line is RENBAN (pink): digits along the line must be a non-repeating set of consecutive digits, in any order.

It is up the solver to determine which constraints go on each line. Color the remaining five lines {orange, red, gray, green, pink}. All lines are region sum and each additional constraint is used once.

https://sudokupad.app/yphfw367a2