Force Field Sokoban

You need to make sure that the boxes are in there correct places and make sure to get to the escape ladder in time before the sanitizing force fields close in. Normally a robot does this job, but unfortunately they're all broken down at the moment. The force fields will annihilate anything organic (that's you) but will try to push you out of the way first. It's like Sokoban but:

• Boxes fall into holes when placed properly so no longer get in the way
• There are two force fields slowly advancing!

Use arrow keys to move around and push boxes. You can also undo moves if you get stuck.