This puzzle has been created by Yu Lia and BoaConstructor.
Normal sudoku rules apply.
In addition, an arrow pointing at a diagonal indicates
how many two-digit prime numbers can be found in this
reading direction on the diagonal.
Example:
The two arrows in this example point at the following two-digit prime numbers:
In bottom right reading direction: 73, 97
In top left reading direction: 67, 79, 37
All two-digit prime numbers are:
The "Diagonal Primes II" Puzzle:
Penpa-Link