Sudoku Killer Game

Sudoku Killer" game is a logic puzzle with digits, which has almost the same rules as the classic Sudoku. The only difference is summing up the numbers in separate groups consisting of several cells in random order. Otherwise, the game has already known rules. The game board is square and consists of 81 cells, 9 cells high and 9 wide. As always, the entire game board, divided into 9 mini-squares, which have 9 digits each. The player has to fill the whole game board with digits from 1 to 9 so that in one column, one row and one mini-square no digits are repeated.