In order to put the person into an unstable state in which he balances on one toe or heel, 'sankaku giho[triangle technique]' is very effective. The secrets of nagewaza[throwing] with 'sankaku giho[triangle technique]' were unlocked!! Written in two languages( Japanese and English).　
「相手をつま先立ちあるいはかかとで身体を支えている不安定な状態にする」ための「三角技法」を用いた投げ技の秘訣を解明！！ この本は2つの言語（日本語と英語）で書かれています。