Logic Masters Deutschland e.V.

The final Grand Tour of the cycling season is underway—the 2025 Vuelta a España kicked off this Saturday, and this puzzle was created to celebrate the race.
I hope you enjoy the ride!

Solve online: SudokuPad

Rules:

Normal Sudoku rules apply. Place the digits 1-9 once in each row, column, and 3X3 box.

Stage Rules:

Each line in the grid represents the path of a different rider. Riders earn 1 point for every even digit on their path.
Digit in a cell with a rider indicates the amount of points earned by that rider.

Stage Results:

The Red rider scored more than the Green rider, who scored more than the Blue rider, who scored more than the Gray rider.

Parity line: Adjacent digits along the Red line have a different odd/even parity.
German whisper: Two cells connected by a Green line must have a difference of at least 5.
Region Sums Line: Box borders divide the Blue line into segments with the same sum.
Palindrome: Digits on a Gray line must read the same from both directions.