????????
      +---------
RNHNW | LNRRWJJM
       -XMNYXN
        ======
         LRHJJJ
        -LCNRXW
         ======
          LLWLRM
         -XMNYXN
          ======
          ??????

base: 10
letters: CHJLMNRWXY
difficulty: intermediate