[error] DEADLOCK/NODUP: no remaining values
            A646
      +---------
51520 | 73938267
       -51520
        =====
        AA8662
       - 33378
        ======
         A80916
        -A154A5
         ======
          A56457
         - 33378
          ======
           56480

base: 11
letters: 0123456789A
difficulty: intermediate
restrictions: no multiplication