Seiken Chudan Gyaku Tsuki is a technique in Kyokushin karate. It translates to 'Forefist Middle-Level Reverse Punch.' This technique involves delivering a punch with the lead hand (seiken) aimed at the opponent's midsection or torso. The term 'Chudan' refers to the middle level, 'Gyaku' indicates reverse, and 'Tsuki' denotes the punch. It is a fundamental technique used to generate power and penetrate the opponent's defenses, often employed as a primary attacking move in Kyokushin sparring and kata.