I recently decided to give the speedrun challenge of getting to the core the fastest and I sliced 7-8 minutes off a time of 31 minutes.
See for yourself in this video:
Anyway, if you would like to participate in this challenge. Feel free to post your videos with times of how long it took you to get to the core. If you manage to beat my time please tell me.
This must be a completely vanilla! (Or Expert) world, random seed. No custom rules allowed! And you must show yourself creating the world, otherwise it will not count.