I cannot find where to post the "subject" for new topic! Quick question, how is the answer B and not D? If, J is in 3 then J is also in 8, but this violates constraint 4... Am I missing something? my setup is like this: _ _ _ _ _ _ _ _ _ _ 1 6 2 7 3 8 4 9 5 10 I put O is 4 and O in 9, so t...