Odd River - Prime Whispers Sudoku
(Published on 20. July 2020, 14:43 by ibn Muhyiddin)
Rules:
- Normal Sudoku rules apply
- All odd numbers in the grid have to form a single orthogonally connected region
- Adjacent pairs of numbers on a line must sum to a prime number
- Not all possible lines are given
Link for solving: Penpa
The following table may help you solve it: it shows for each pair of odd numbers what even numbers sum to a prime with both numbers, and similarly for pairs of odd numbers.
Solution code: Please enter the digits from the bottom row as a single number (e.g. 123456789).
Comments
on 21. July 2020, 07:16 by henrypijames
The key logic in the first puzzle was very neat, but worth little if reused. It's therefore only right - and impressive - that this puzzle uses the same rules but different logic.
And the aesthetics is just great (something Simon A. also remarked on with the first puzzle).
on 20. July 2020, 22:40 by SudokuExplorer
Nice variation of your previous puzzle!
on 20. July 2020, 14:50 by ibn Muhyiddin
Add Penpa link
on 20. July 2020, 14:47 by Madmahogany
Nice one!
