Step 3. If exactly one row or column is left uncrossed out, stop. Otherwise, move to the cell to the right if a column has just been crossed out or below if a row has been crossed out. Go to step 1.
Step 3. If exactly one row or column is left uncrossed out, stop. Otherwise, move tothe cell to the right if a column has just been crossed out or below if a row hasbeen crossed out. Go to step 1.