I started learning Karate in 2007 at Alan Thilak Shitoryu Karate School with Sensei Abraham John (late) and Sensei Prabhu, they not only taught me Karate but also many things essential in life like discipline, the correct use of this Art during necessary time only etc.
Karate has two parts one is Kata and other is Kumite which means to fight in a tournament with other opponents, it is essential for a student to do good in both.
This stance is known as Neko Ashi Dachi in Japanese. This Shotokan stance is used primarily in katas. FYI – Neko Ashi Dachi translates to Cat Foot Stance – Cat (Neko) Foot (Ashi) Stance (Dachi). Nekoashi-dachi (猫足立, cat foot stance)
All weight rests on the back leg, which is bent at the knee. The rear foot is turned at about 20-30 degrees out and the knee sits at the same angle. Only the toes of the front foot rest on the ground, positioned in front of the back heel at about the same distance as the front foot of moto-dachi. There is no weight on the front foot, and there is no bent in the ankle joint - front knee, front shin, and the rise of the foot (but not the toes) form a single line, vertical in Shitō-ryū, tilted in Shotokan.
If the Yama-tsuki is supposed to serve to attack one opponent, then the alignment and point of impact will be in the center, the elbow is attached to the body, lowering the shoulder corresponding to it, and placing the head between both arms while the Body leans forward, providing more force to attack the move forward movement. Bust at Hanmi. Both hands are in the same vertical plane. Whereas if Yama-tsuki is to attack two opponents, the alignment and point of impact will be one that matches the width of the shoulders, with the elbow abducted from the body, the chest tilted forward, and an additional movement guiding the head. The fact of inserting the head is such that it is between two opponents, and both ura tsuki and gyaku tsuki have more penetration.
Yama Tsuki Known as "rock kick", or "U" kick, putting the head. Yama-tsuki is a variant of Awase tsuki and belongs to the Morote Tsuki group. Yama-tsuki is a double tsuki in which the fist corresponding to the hind leg hits a gyaku-tsuki with a slightly curved trajectory and the arm is not fully extended, as in a normal tsuki. While the hand corresponding to the front leg hits Ura Tsuki with the elbow attached to the body. In terms of alignment and anchor point, there are discrepancies between schools and even between teachers belonging to the same school or style.
According to some reports, the alignment and point of impact should go towards the center, while others argue that it should be at shoulder level. This discrepancy usually arises from the assumption that if Yama-tsuki serves to hit an opponent, or its function is to hit two opponents that are together.