Wild Wild West - The Steel Assassin

Hints:
———
Be sure to check slain bad guys for much-needed items such
as bandages, ammo, and other handy objects.
Keep an eye on how much ammo you have remaining in your
current weapon, and always reload before you leave one
scene and enter another.
Remember to use all the gadgets aboard the Wanderer.
If you leave the train for West’s second mission without
checking out the info Gordon has assembled on the Bull,
for instance, you might not be able to solve a crucial
puzzle.
Chess board puzzle solution:
——————————————
Refer to the board as a battleship board.
E1
C2
A3
B1
D2
F1
G3
H1
F2
D1
B2
A4
C5
A6
B8
A10
B12
D11
E9
F11
H12
Then, click on the horse symbol