İn the puzzles part if you click on game link before solving the puzzle you can see the solution and if you play it it says correct and you get points. (Sorry for bad english)
Amazing, and apparently true! BUT... I think that most of the lichess community doesn't want to cheat, and the puzzles are just a tool to help us improve. Puzzle ratings don't seem to grant any status or priviledge. Still, many of us tend to focus on our ratings, so it would be nice to have lichess disallow rating points for a puzzle where we have clicked the link. But someone could probably still cheat.... btw: your English is fine.