????????
      +---------
FYQGQ | LEEHFXYW
       -XRJWY
        =====
        FEQYGX
       -FXLWNH
        ======
         FYFPLY
        -FWERPL
         ======
           UFLXW
          -QWLHP
           =====
           ?????

base: 14
letters: EFGHJLNPQRUWXY
difficulty: medium