Solve Method C

sweepers · Posted: Wed Jun 01, 2005 7:14 pm Post subject: Solve Method C

Looking here
http://www.sudokusolver.co.uk/solvemethods.html

and using this input string
34_____16+__63__7__+8__6_5___+5___3_29_+___52____+_28_9___5+___8619_7+__92_36__+68_____23

The 3rd move suggested is
Found a multicount set [67] (in column 8).

I can see how this has been derived as the unsolved cells are
458 34 4678 3467 45 458
i.e. in the column there are exactly 2 6's and exactly 2 7's both occurring in the same cell, so they both get to 67

however if you had 2 unsolved cells in a column which were say 267 267, and the numbers 2,6 and 7 occurred exactly twice in that column, how are you supposed to deal with those cells