Happy 23rd
- Killer cages
- XV and number dots
- Palindromes
The brief
Normal sudoku rules apply. The grey lines are palindromes that read the same in both directions. Digits in cages sum to 12; negative constraint applies -- no unmarked dominoes sum to 12. Digits separated by a V sum to 5, digits separated by X sum to 10, (not all V’s and X’s are shown).