[error] DEADLOCK/NODUP: no remaining values
            8988
      +---------
47664 | 76948081
       -85668
        =====
        489460
       -482669
        ======
          36958
         -85668
          =====
           89561
          -85668
           =====
            4563

base: 10
letters: 0123456789
difficulty: intermediate
restrictions: no multiplication