[error] DEADLOCK/NODUP: no remaining values
[error] DEADLOCK/NODUP: no remaining values
            2E51
      +---------
0D3E6 | 3D27C86B
       -9EBCE
        =====
        2C6078
       -25221C
        ======
         AEA296
        -AC3CCA
         ======
          29C67B
         -20E561
          ======
           27D63

base: 15
letters: 0123456789ABCDE
difficulty: hard
missing: 4