var correctchoices=new Array()
correctchoices[1]='a1a4'
correctchoices[2]='d1d6'
correctchoices[3]='a5d5'
correctchoices[4]='c6a6'
correctchoices[5]='f6e6'
correctchoices[6]='f1f4'
correctchoices[7]='b1b7'
correctchoices[8]='d1d6'
correctchoices[9]='a8a6'
correctchoices[10]='g5e5'
var correctanswer=new Array()
correctanswer[1]='Ra1xa4'
correctanswer[2]='Rd1xd6'
correctanswer[3]='Ra5xd5'
correctanswer[4]='Rc6xa6'
correctanswer[5]='Rf6xe6'
correctanswer[6]='Rf1xf4'
correctanswer[7]='Rb1xe7'
correctanswer[8]='Rd1xd6'
correctanswer[9]='Ra8xa6'
correctanswer[10]='Rg5xe5'