Edit chess opening

remove chess line
remove chess line
remove chess line
remove chess line
remove chess line
remove chess line
remove chess line
remove chess line
remove chess line
remove chess line
remove chess line
remove chess line
remove chess line
remove chess line
remove chess line
remove chess line
remove chess line
remove chess line
remove chess line
remove chess line
remove chess line
remove chess line
remove chess line
remove chess line
remove chess line
remove chess line
remove chess line
remove chess line
remove chess line
remove chess line
remove chess line
remove chess line
remove chess line
remove chess line
remove chess line
remove chess line
remove chess line
remove chess line
remove chess line
remove chess line
remove chess line
remove chess line
add chess line