WNYN
      ----------
CXXTR ) MXTRYNTM
       -NXXMW
        =====
        WXCCPN
       -RMXWTN
        ======
         WCRRXT
        -WRXWMY
         ======
          WXMRYM
         -RMXWTN
          ======
           WYHCW

base: 10
symbols: CHMNPRTWXY
difficulty: intermediate
restrictions: no multiplication