Puttering With Prime Sandwiches
(Published on 5. July 2024, 15:01 by RockyRoer)
Combines putteria, sandwich, and finding distinct primes sums -- what more could one ask for?
The Rules:
- [Sudoku] Normal sudoku rules apply.
- [Putteria Variant] Shade exactly two cells in every row, column, and 3x3 box such that:
- No shaded cells are orthogonally connected.
- There is only one shaded cell per killer cage
- The shaded cell contains the size of the killer cage.
- [Killer] Digits in killer cages cannot repeat.
- [Sandwich Variant] Question marks outside the grid indicate that the sum of the digits between the shaded cells in that row or column must be a distinct prime value (no repeats allowed)
Solution code: The row or column containing the smallest sandwich sum, clued or unclued, from left to right or top to bottom
Comments
on 6. July 2024, 20:52 by misha
Excellent multi-stage puzzle! Requires some thought, but solves smoothly the entire way.
Reply: Thanks! I especially enjoyed speed running the first stage during the multiple times I tested and retested this puzzle :-)
on 6. July 2024, 10:44 by Franjo
Very nice mathpuzzle with a wonderful presentation. Thank you so much for sharing this gem.
on 6. July 2024, 03:43 by rameshsrivats
Terrific puzzle.
on 5. July 2024, 23:34 by marcmees
genius construction. Thanks
on 5. July 2024, 16:25 by RockyRoer
Updated solution code
on 5. July 2024, 15:43 by sanabas
Elegant & great fun, as always.
Maybe mention the solution code is the smallest of the sums, whether clued or unclued? I assumed it was smallest of the clued ones.
REPLY: Thanks for the solve! I've updated the solution code description.
