Vampires' Secret
(Published on 27. January 2023, 07:37 by lepton)
Normal sudoku rules apply.
Digits in a cage cannot repeat and all cages sum to the same total. However the value a digit contributes to the cage sum can be altered by the Vampire rule.
Each row, column, 3x3 box and cage contains one vampire cell and one prey cell. Each digit 1-9 appears once in both roles and a cell can't have both roles. In cages prey cells contribute 0, and vampire cells contribute the sum of its own digit and the digit of prey cell in the same 3x3 box.
Play this puzzle on CtC web app
Alternative version where 4 given digits are marked with smaller font is here. This allows one to use center or corner marks on these cells.
4x4 Example
Vampire cells are circled. Prey cells are crossed. All cages sum to 11. link
Solution code: Row 4 followed by row 8
Comments
on 16. August 2023, 10:33 by SquaringSquirrel
What a wonderful puzzle! So thrilling to chase the poor victims around the grid, once you got your head around the concept. Thank you!
on 1. February 2023, 01:27 by Jds2
It has a really beautiful solution path once I (finally) found it.
on 27. January 2023, 22:10 by SenatorGronk
Wow, this one was insane. Great job!
