XRW
      ---------
XPJAW ) GPRGEGG
       -AXRQR
        =====
        PWQERG
       -PGQGRX
        ======
         PWWQAG
        -PWXPJP
         ======
           EWPE

base: 9
symbols: AEGJPQRWX
difficulty: intermediate
restrictions: no multiplication