No More Gridlock

Woohoo! I beat level 40 -- the last level of online flash board game Gridlock and the only level that I took many days to solve. I tried so many days and got stuck in the same situation -- the targeted block (see picture) is at the top-right corner. Finally, almost giving up, I searched for a guide. Thanks to a screenshot that looks like the picture above. Got hinted that the targeted block was actually supposed to be at the top-left corner. Then within a few minutes, the puzzle was solved. It was so easy but I took so many days...