Minecraft offers players a nearly limitless number of ways to challenge themselves, both in the normal game features, and in user-created tools and challenges. This particular map is an exceptional example!
Noobcrew has come up with a deceptively difficult challenge map. At first glance, it seems easy to meet some of the requirements listed (such as making a furnace). However, it shares a similarity with a number of time-tested games - it is very easy to begin this challenge, but surprisingly hard to master. Overcoming all 20 separate goals requires an amazing amount of patience, skill and determination. The author of this challenge has provided two separate maps, each with its own unique difficulties.
Think you can overcome the challenges? Try it for yourself!