giai van nay nhu sau
p4-8 tg4.1
c8-7 tg4.1
x3-6 tg4-5
c3-4 tg5-6
x6/2 t7/5
c2-3 tg6/1
p8/1 tg6/1
x6.2
do thua.dung khong ong ban