Form I, also known as Shii-Cho, The Way of the Sarlacc, or The Determination Form, was the oldest and most rudimentary form of lightsaber combat developed by the Jedi Order. After the creation of other combat styles, the first form was often used when all the others had failed.
- Star Wars: Absolutely Everything You Need to Know (First identified as Form I)
- Star Wars: The Visual Encyclopedia
- Star Wars: Lightsaber Battles
- Knights of Fate (First identified as Way of the Sarlaac) (First identified as The Determination Form)