Dieter: to reduces White to one eye.
Tapir: I believe the idea is similar to the previous problems, play the first wedge asking for an answer and then you have an answer to both, with move order being crucial (don't play a follow up before you asked otherwise your opponent will choose differently). This only looks so complicated because most of us are trained not to consider wedges at all.
Dieter: Indeed! I consider these problems a great antidote to that heuristic.
Tapir: A cut produced by a wedge won me a game yesterday :) It helps.