Instructions: Push all of the gifts onto the the socks into the corner of the screen. Click on the space you want Santa to move to, then press the arrow key on your keyboard to move Santa to this location.

Rules: Santa  is only allowed to get behind the gifts and push them, not pull. Only one gift can be pushed at a time.  All gifts must be moved onto socks to win.

Hints:

• Don't move too quickly, you might get into a no-way-out-move.
• Sometimes it is necessary, to push gifts around in order to make room for other gifts.
• Think about which places are easy to reach and which are not. Push gifts that are in hard-to-reach places first
• Sometimes you have to place gifts near target-positions, then make other moves before pushing the gift into the position.
• Trial and error will not give you many wins. Analyze the problems thoroughly before moving.
• Patience and practice are the most valuable abilities when solving 21st Sokoban problems.