????????
      ----------
PXLHL ) URLWCYCC
       -PXLHL
        =====
        QPLTCY
       -QTHQRL
        ======
         QPLWYC
        -QTHQRL
         ======
          QPHPCC
         -QTHQRL
          ======
          ??????

base: 11
symbols: CHLPQRTUWXY
difficulty: medium
hints: X << R