Yikes and sorry. Looks like level 12 is currently NOT solvable. I guess I changed the logic where you can't bring previously acquired bombs into the next level with you. So this level can't be solved without that. You would need to have some bombs to open up the path to the key, but since bombs to pick up are not carried into this level from the previous, it isn't solvable. There are still tons of more levels by the way, you can find them at the 'More Levels' link on the levels page. You can even make your own levels using the level editor. (Just press ESCAPE in game mode and you'll be able to adjust what tiles are where, etc). You can load and save these levels, so feel free to give that a try.