var correctchoices=new Array()
correctchoices[1]='c4a6'
correctchoices[2]='e3f4'
correctchoices[3]='b3d5'
correctchoices[4]='f4b8'
correctchoices[5]='f2d4'
correctchoices[6]='e4b7'
correctchoices[7]='f3g4'
correctchoices[8]='d2c1'
correctchoices[9]='f4g5'
correctchoices[10]='d5e4'
var correctanswer=new Array()
correctanswer[1]='Bc4xa6'
correctanswer[2]='Be3xf4'
correctanswer[3]='Bb3xd5'
correctanswer[4]='Bf4xb8'
correctanswer[5]='Bf2xd4'
correctanswer[6]='Be4xb7'
correctanswer[7]='Bf3xg4'
correctanswer[8]='Bd2xc1'
correctanswer[9]='Bf4xg5'
correctanswer[10]='Bd5xe4'