hello everyone,
i found the Sudoku puzzle in newspapper and find it interesting, so i wrote a Excel macro that lists possible candidates or even the answer in the cells! (i am just putting my thinking and logics into the excel'a VBA macro)
sometimes however the puzzle can not be completely solved, as i am stuck on determining when a candidate number appears in the cell only once. because if it happens, then that cell in the 3x3 block is solved!
any help/ideas please
Thanks