[error] DEADLOCK/NODUP: no remaining values
        ?????????
      +----------
73038 | 5D32D5DBA
       -585888
        ======
         05D13D
        -0158AD
         ======
          22956B
         -2030BA
          ======
           1D019A
          -158570
           ======
           ??????

base: 14
letters: 0123456789ABCD
missing: C 4
difficulty: hard