Sai cha

In lightsaber combat, a sai cha was an instance when a Jedi beheaded their opponent. In general, sai cha was reserved for either droids or biological opponents that presented a great danger and resisted non-lethal subduing attacks (such as cho mai). Only individuals like Simus with great strength in the Force were able to survive it, and even in his case it may have been impossible without the particular physiology of the Sith species.

It was one of the lightsaber techniques known as The Marks of Contact. It considered the second-most appropriate way of killing, if a Jedi was obliged to end a life with a lightsaber.

Text and facts from the “Sai cha/Legends” article on Wookieepedia, licensed under CC BY-SA 3.0. Modified for this site.