Nice puzzles, but the "Correct Solution" and "Alphabet Soup" one's can be solved by systematically going through all the possible combinations, as opposed to figuring them out.
There should be an 'Ohka pact' taken by all who fly the Ohka; which states that no two, or more, Ohkas should attempt to destroy each other while 'normal' aircraft remain in the match. Only once all 'normal' aircraft have rage-quit are the Ohkas allowed to engauge each other.
+ So that all Ohka pilots may read and follow this pact.