ENHT
      +---------
YUEQH | LNNLXQJX
       -YUEQH
        =====
        YYUGQQ
       -YTWWEW
        ======
         YFXXLJ
        -YFXXLE
         ======
              NX

base: 13
letters: EFGHJLNQTUWXY
difficulty: hard