How did the end transpire

1. Play first
2. Place your first two pieces on the middle square at the top left and bottom right corners
3. Switch to blocking the opponent from getting 3 in a row (a 'mill') for a couple of moves
4. When you get a free move (i.e. you don't have to block) try to make a mill (line of 3)
5. During steps 3 and 4 keep blocking/moving with a view to getting two mills that you can move between.
6. Don't lose any pieces.
7. If you get to a place where you can keep moving to complete a mill (ideally between two) you can use it to mop up all his pieces.
8. You can break a mill and then re-complete it in two moves - if your opponent is more than 2 moves away from completing a mill you can use this to stop him too.

Here's a winning set up:

The top middle white piece can move up and down between two mills - at this point they can keep repeating to remove all black's pieces.

Here is a video with more detail.

I literally just did this!

The clues are in a letter you find, and they are as follows:

UNDER ALL CIRCUMSTANCE-OBEY AND BALANCE THE MORAL LAW
THE GLOBE OVER
BE IT CHRISTIANITY OF THE WEST
BUDDHISM OF THE EAST

The BALANCE is represented by the scales of justice. The globe is the GLOBE, obviously. The cross symbolizes CHRISTIANITY, and the steering wheel is a symbol for BUDDHISM.

Based on the last two lines, Christianity is of the West, so the cross goes on the left. Buddhism is of the East, so the wheel goes to the right.

Then, for the first two lines, the moral law is to be obeyed under all circumstances, so the scales are on the bottom. Furthermore, the moral law must be obeyed all over the globe, so the globe is on top.