Logic Masters Deutschland e.V.

The Sudoku was featured in the following videos:
Unshackling Sudokus & Puzzles
Cracking the Cryptic (older version of the puzzle)
Michael’s Miscellaneous Media (older version of the puzzle)

Rules:

• Sudoku: Place the digits 1-9 once each in every row, column and box.
• Fog-of-War: The grid is partially covered in fog. Placing correct digits will clear the fog from surrounding cells.
• Sandwich Sums: Clues outside the grid show the sum of the digits between 1 and 9 in that row or column.
• XV: Digits in cells separated by X sum to 10.
• Unique Arrows: Digits on an arrow sum to the digit in the arrow's circle. Different circles may not contain the same digit.

Solve the sudoku here:
Sudokupad