Yeah, by the end of the jam I didn't have much time left for testing, so the levels aren't as tight as they could be. There's a couple more levels like that too. I don't mind so much, but thanks for letting me know.
Thanks for the feedback, I'm glad you got something out of it.
It did take a little bit of testing to get the balance right on the number of bombs to prevent it from being too easy or too reliant on random guessing.