hi people, can someone please help me with this prob? doing the simple suduko program puzzles and have got to swordfish 004.ss ! been doing ok with the other swordfish puzzles so far (001 to 003 plus others ) but find that 004 has a swordfish in the 7's candidates but cannot understand why/how it is supposed to work! the 'hint' says use a swordfish to erase a total of eight candidates (7's) in diff rows/cols but i just cannot fathom why! as it is the puzzle has a total of 25 candidate sevens!, -- before applying the swordfish!---and i also just cannot see whether the swordfish is in the cols or in the rows--- pleeeeease could someone look at this puzzle and explain to me (in idiots language plse) the reasoning behind the erasure of the eight 7's and just how this particular swordfish works
to enable the erasure of the specific eight candidate sevens?? many thanks in advance and cheers goldie