????????
      +---------
KRLKC | YYGRLKTY
       -TEYQQ
        =====
        RKCRLK
       -RQTEKC
        ======
         RECGLT
        -RCKQLC
         ======
          RPGQPY
         -RPQPCQ
          ======
          ??????

base: 10
letters: CEGKLPQRTY
difficulty: hard