YQYQ
       ------------
PQYJEY ) GWWPQMYGMY
        -GGQYJQY
         =======
          YEEPYJG
         -XQMYEJY
          =======
           GREGRWM
          -GGQYJQY
           =======
            YGWRJQY
           -XQMYEJY
            =======
             PPGRQJ

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