Santa's fired his elves, and he needs help assembling some production lines to sort his presents! Can you create complex conveyor systems capable of sending the correct presents in the correct order?

This map requires Minecraft 1.9 - Snapshot 15w50a.

Map Info:
This map is part of the Map Advent Calendar. A special holiday event comprising 24 maps, one everyday until Christmas.

The map is designed to be a mixture of Infinifactory and Human Resource Machine. Your goal is to arrange blocks on a factory floor in such a way that you turn a series of inputs (stacks of presents) into a desired series of outputs. For instance, you might have a system that only sends presents to the output if they are larger than the previous stack, or one that only sends the largest stack of presents.

There are a set of 15 puzzles of more-or-less increasing difficulty, starting at the absolutely easy first puzzle and ending at the fiendishly difficult fifteenth puzzle (I'm not kidding, I wasn't even able to solve that one myself. Had to pass it around a few friends until one of them solved it for me just to prove it was possible).

Should any puzzles prove too difficult for you, there is a built-in hint system which will provide you two hints per puzzle, as well as a free solution if one is required.

Server Info:
The map is designed for singleplayer, but it will work in multiplayer. If you are using it in multiplayer, you will need to add the resource pack to server.properties:

http://www.mediafire.com/download/g14hgkv37gw1a3y/SantasWorkshopRP.zip

Also, if you are playing on a server, ensure that command blocks and mobs are enabled (as usual).

If you are recording this map for YouTube, kindly include this information somewhere in your description:

Map Download: https://www.minecraftmaps.com/puzzle-maps/santas-workshop
Map Creator: QwertyuiopThePie
YouTube: https://www.youtube.com/user/Temporarily9

Contact Me:
If you want to contact me (to say you enjoyed the map, request additional puzzles, report bugs, whatever really), the best method would probably be my Twitter.

You can go to my YouTube Channel if you want, but it is currently in a state of sad disuse.

Lastly, my preferred method of broadcasting, Twitch.