I wonder where I can find good solutions of previous problems?I think I can learn from that
Players can share screenshots using the chat camera icon. It's voluntary so you'll only see a small number of player solutions.
Within a group, you can share solutions with your teammates.
You can also download solutions your teammates have shared.
When you improve on a shared solution, you are said to "evo"
it, and this can help your team.
Thanks for your question. I added it in the FAQ on the Wiki here: