with 1 given in the bottom middle box, you can scratch the possible 1 in the field above.
next you can fill the second last row with few possibilities.
it will be 1, 2, 5, 7 for all four fields in that row, but in every column there are already two of those numbers. that leaves two remaining in every field.
notice there is only one field, where another 1 is possible, it is the mid-right field in the bottom left box.
there you got your next number... plus there is only one number left in this column.
and with this field filled with the remaining number for that column, there is only one field empty for the top-left box, too!
ok, were just two automatic follow-ups.
the rest should be a piece of cake now. was already... :twisted:
nerdcore! :mrgreen:
