背手押さえ受け、中段手刀打ち 
Haishu osae uke, chūdan shutō uchi
Back of hand pressing block, mid-level sword-hand strike

 

Bunkai for Sēpai 十八
Kyokushinkai

盧山 初雄, 空手道型教範人巻之 
Royama Hatsuo, Karatedō Kata Kyohan