XHQ
       -----------
HPTWXT ) YJQYHXYXX
        -QPGYPFG
         =======
          XJWFHYX
         -XGTTHPG
          =======
           JXQWHXX
          -JYTJFWG
           =======
             PPPTX

base: 10
symbols: FGHJPQTWXY
difficulty: intermediate
restrictions: no multiplication