Feature request: good move puzzles

Given an arbitrary chess position. Find a good move, i.e. such that grow up my advantage (in computer analysis).

I think such puzzles will be useful for beginners (like me) which makes too many mistekes and blunders while playing chess.

Thought about this. Pretty complicated. It'd tie in with an opening trainer. But chesscademy is also a good source for this kind of stuff.