>>11050345why are you talking to me about the 5th row, I said in the 6th row you already have a pair of 5 and 9 so the other two spaces have to be a pair of 2s and 3s making the 8row 9column only place for the potential 9 in that column
yours works by the same logic though, I always try to group the numbers into sets and usually something doesn't fit