CalcuDoku (CalcuDoku)
An incredibly interesting puzzle, which was created on the basis of Sudoku, we present to your attention in the CalcuDoku game. According to the rules, you must fill in the cells with numbers that should not be repeated vertically or horizontally. But at the same time, you need to take into account the numbers that are located in the upper left corners of the cells, they are circled with a bold line. There are math signs next to them, which means that the number you place in the cell in the CalcuDoku game will be different.