Killer Sudoku help! I can't get the online answer for this but have been dying to solve it but keep going wrong. If anyone is happy to help please let me know! :
Printable Killer Sudoku
Printable Killer Sudoku
Killer Sudoku - puzzlephil
Killer Sudoku Daily 1271 Tips and Strategies
Killer Sudoku : Number Puzzles - Apps on Google Play