Kouchi Gari (小内刈?), is one of the original 40 throws of Judo as developed by Jigoro Kano. It belongs to the second group, Dai Nikyo, of the traditional throwing list, Gokyo (no waza), of Kodokan Judo. It is also part of the current 67 Throws of Kodokan Judo. It is classified as a foot technique, Ashi-waza.
This technique involves throwing your opponent by clipping the back of their heel. In right side kouchi gari you use your right foot against their right heel from the inside. ko uchi gari
Attacking
1.)After your opponent takes a big step forwards with their right foot and before they put that foot to the floor pivot on your left foot, open your body to the left and bend your right toes well to the inside. Put your right foot (big-toe side bent in) on the inside of your opponent's right foot so that it strikes the back of their heel.
2.)Sliding your foot along the floor, clip their heal in the direction of their toes.
3.)Push out with your right hand, do not relax the pull of your left hand, clip your opponent, and down them.