SudoKanard

 Multiples Sudoku "Primes" Standard Sudoku rules apply. Also, some numbers are given on the edges between two adjacent cells. Treating those cells as a two-digit number (reading left to right or top to bottom), the two-digit number must be a multiple of the clue. (For example, near a 7 clue, the two digits can be 14, 21, 28, 35, etc.)   Solve online on Penpa: https://tinyurl.com/25kmjpy2 Video solution: https://www.youtube.com/watch?v=d-ozH6l-aMs

  Prime Sum Sudoku   Standard Sudoku rules apply. Additionally, every diamond symbol between two cells means that the corresponding digits add up to a prime number (3, 5, 7, 11, 13 or 17). Conversely, the lack of a diamond symbol between two orthogonally adjacent cells means that the corresponding digits do not add up to a prime number. Penpa link: https://git.io/JDvcN