Killer Sudoku is a variation of Sudoku that adds an extra challenge by using cages to restrict the placement of numbers.
The basic rules of Killer Sudoku are the same as standard Sudoku:
Each row, column, and 2x3 block must contain the numbers 1-6 exactly once.
*The new rule in Killer Sudoku is that there are cages in the puzzle. Each cage has a number in its corner that tells you the sum of the numbers in that cage.
Killer Sudoku can be a challenging puzzle, but it can also be a lot of fun. By adding this extra layer of complexity, Killer Sudoku forces you to think more strategically about the placement of numbers.
Here are some tips for solving Killer Sudoku puzzles:
Look for patterns and eliminate any numbers that cannot be in a particular square.
Use the cage numbers to your advantage. If you know that the numbers in a cage must add up to a certain number, you can rule out any other numbers that do not fit that pattern.
Be patient and persistent. Killer Sudoku puzzles can be challenging, but they are also very rewarding.