this is a sure-win endgame, there are many ways to win as long as red does not make any critical mistakes
the solution offered is the most direct and efficient

chariot (R) 2+1 king (k) 6+1
if on 3rd move red R2+1 black has elephant (e) 5+7 (if e5-7 then R2=3, k6=5, H3+4 red wins by capturing black's chariot) it may take a longer time for red to win although should still win the the end =)

example of another way to win is:
R2+1 k6+1
H3+4 e5-7
R2=5 r7+6
A5-4 r7=6
K5+1 r6-6
H6-4 r6=4
R5=3
Red wins by trading horse with chariot
But the original solution offered is more elegant

I'm writing this at my work place. I may have missed some moves so do let me know if there are any mistakes.

I'm solving this from my hospital computer, so cannot type Chinese, sorry.

Question 9
PAO 5 jin 4, che 3 ping 4 (if pao 7 tui 1, PAO 9 ping 7, ma 1 tui 3, CHE 8=7, red wins), CHE 8 tui 1, pao 7 tui 1, CHE 4 ping 5, jiang 5 ping 6, CHE 5 jin 1.

Question 11
MA 5 jin 6, che 8 jin 1 (if pao 2 tui 6, CHE 4 jin 1, ma 7 tui 6, PAO 2 ping 8, red wins), CHE 4 ping 2, red has winning advantage. Is there any direct kill method?

Question 12
CHE 5 jin 3, jiang 5 jin 1, CHE 8 jin 1, jiang 5 tui 1, MA 6 jin 5, red wins no matter what black moves

Question 15
CHE 6 jin 4, jiang 5 jin 1, CHE 6 tui 1, jiang 5 tui 1, hou PAO ping 2, ma 5 tui 7, PAO 2 ping 5, qian pao ping 5, qian PAO ping 3, shi 6 jin 5, CHE 6 jin 1

Question 17
CHE 8 ping 7! xiang 5 tui 3 (if ma 3 tui 1, CHE 7 tui 1, ma 1 tui 3, CHE 4 jin 6! alternatively, if che 7 tui 4, CHE 7 tui 2, xiang 5 tui 3, CHE 7 ping 3), PAO 3 ping 5, shi 5 tui 6, PAO 5 tui 3, pao 9 ping 5, CHE 4 jin 7, jiang 5 jin 1, CHE 4 tui 1, jiang 5 tui 1, pao 5 JIN 3, red has winning advantage

CHE 4 jin 4, che 8 ping 4, CHE 8 jin 4, che 4 tui 3, CHE 8 tui 2, che 4 jin 2, PAO 7 ping 5, red has winning advantage.