User blog comment:Hayashi H/Spring 2016 Event Guide/@comment-11937523-20160510124119/@comment-11937523-20160510145446

Yep, I put all my best green planes (rep601,iwamoto and such) in Land bases and cover air raid and boss node. Put everything into boss support(Yamato class, Shoukaku class), and the second best into node support(Kirishima, Roma, Hiryu class)

Whenever support kills the one or both BB on boss node, you win. If not, you will have 6 red ships.(At least in my case)