Still others have suggested that he intended to reverse his strategy at the Battle of Kawanakajima as he was aware that Tadatsugu SAKAI's detachment force of 3,000 men made a detour to Mt. Tobigasu.
また鳶ヶ巣山に酒井忠次の別働隊3000が迂回した事を武田軍は察知しており、川中島の合戦の逆説的な再来を狙ったという説などもある。