Killer Sudoku by Sudoku.com

Killer Sudoku offers an exciting experience for puzzle enthusiasts. This game combines elements of classic Sudoku and Kakuro, creating unique number challenges. You need to fill the grid with digits, ensuring the sum of numbers in each outlined cage matches the given value. The game suits both beginners and advanced players with multiple difficulty levels: easy, medium, hard, and expert.

The rules are simple: fill all rows, columns, and 3x3 blocks with numbers 1 to 9, just like in classic Sudoku. Pay attention to the cages indicated by dotted lines and make sure the sum of numbers in each cage equals the number in its upper left corner. The basic rule is that the sum of all numbers in each block, row, or column always equals 45. Numbers cannot repeat within cages, rows, columns, or blocks.

The game includes daily challenges and seasonal events with unique rewards. You can use hints, notes, and auto-check to find mistakes. Features include statistics, unlimited undo, multiple color themes, and auto-save. Killer Sudoku is available for free on most devices, helping you train your brain and have fun.