Palindrome Sudoku Snack
- Kropki dots
- XV and number dots
- Palindromes
- Negative constraint
The brief
Normal (irregular) 6x6 sudoku rules apply, i.e. each row, column and region has to contain the digits from 1 to 6. Digits joined by a V sum to 5. Digits joined by X sum to 10. NEGATIVE CONSTRAINT: All V and X are given. Digits NOT joined by V or X never sum to either 5 or 10. The digits on the gray line form a palindrome, i.e. the string reads the same forwards and backwards. Digits joined by a white dot are consecutive. (Not all dots are given.)