Logic Masters Deutschland e.V.

Happy solving!!

===Rules for this puzzle:===

Normal Sudoku rules apply.

Lines: The sum of the digits in each line is a Unique prime number. Digits do not repeat on a line.

Sandwich: The clues outside the grid give the sum of the digits sandwiched between 1 and 9 in the respective row or column. Each sandwich clue represent a unique prime number.

Notes: There may be common prime numbers between sandwich and Killer sum clues. But within one type of clue, they are unique. Dont count zero as prime number.

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f-puzzle link:

f-puzzle-(Primes are Unique)