????????
      ----------
EEEPW ) YXWHPRRX
       -EEEPW
        =====
        XRPPHR
       -XHHJXG
        ======
         XXJYRR
        -XGGXTH
         ======
          XJTEXX
         -XHHJXG
          ======
          ??????

base: 10
symbols: EGHJPRTWXY
difficulty: hard