Go Rin No Sho: A Book Of Five Rings To Move The Shade
To move the shade is used when you cannot see the enemy's spirit.
In large−scale strategy, when you cannot see the enemy's position, indicate that you are about to attack
strongly, to discover his resources. It is easy then to defeat him with a different method once you see his
resources.
In single combat, if the enemy takes up a rear or side attitude of the long sword so that you cannot see his
intention, make a feint attack, and the enemy will show his long sword, thinking he sees your spirit.
Benefiting from what you are shown, you can win with certainty. If you are negligent you will miss the
timing. Research this well.