lời giải đây
1.V7.9
X5-1
2.V5.7
X1/1
3.S5/6
X1-2
4.S6.5
X2-3
5.S5/6
x3/2
6.S6.5
X3-4
7.Tg6-5
X4.2
8.V9/7
X4-3
9.V7.9
X3/1
10.S5.6
X3-2
11.V9/7
X2/1
12.S6/5
X2.3
13.V7.9
X2/2
14.S5.6
X2-3
15.Tg/1
X3-4
0-1