Killer Sudoku CTC

- Start by understanding the basic rules of Sudoku: each number from 1 to 9 must appear once in every row, column, and 3x3 grid. - Use the given sums in outlined areas to deduce number placement. Each outlined area provides the sum of its numbers. - Be strategic: consider both the sums and Sudoku rules to fill in the grid accurately. - Utilize logic, elimination, and arithmetic to progress through the puzzle, carefully checking potential placements. - Continue solving until all numbers are correctly placed, completing the puzzle.