Chess and coordinates

圖:http://photo.pchome.com.tw/sinyee/121828412462/

○ is the red side and ● is the black side. The red side takes the move first.

Write down the coordinates of the chessmen so thaat the red side could defeat(checkmate) the black side in a few moves(Hint: Every move is in check):

Red side○ Black side ●
(3,8)→(3,9) (4,9)→(3,9)
(a)→(b) (c)→(d)
(e)→(f) (g)→(f)
(i)→(j) (k)→(l)
(m)→(n) LOSE