Killer Sudoku

Come to play this new Killer Sudoku game.You can exercise your brain, also have fun in the game. Killer Sudoku is more suitable for romance and high-end players. Novice players can start from the difficulty and understand rules of sudoku; High-level players can challenge expert difficulty and challenge yourselves! How to play: -The goal is to fill all the numbers in the blanks. -Light up each different area, the sum of the numbers contained in the area is equal to the number in the upper left...