[error] DEADLOCK/NODUP: no remaining values
[error] DEADLOCK/NODUP: no remaining values
            067
      +--------
43237 | B237903
       -9B4A4
        =====
         AB460
        -31605
         =====
         40AC93
        -4207AA
         ======
          401A8

base: 13
letters: 0123456789ABC
difficulty: hard
missing: 8