Shotokan Kata: Bassai Dai (Penetrate the Fortress)
The originator of this kata is unknown, but likely was of the Tomari-te school of Okinawa. It exhibits characteristics of the Tiger style. Bassai Dai is the major form of the kata. Power and dynamic counter-attacks are its features, hence it is one of the essential Shotokan katas.
Execution
Video reference
Karate Union of Australia: Basai Dai
See also
Bunkai, Kata, Shotokan