What happen to the logic?

The Easy level is very enjoyable for awhile, but then you need to move on. It may be just me, but the logic, on the Medium level, seems to break down. You seem to be left with two options. Either get a Hint or make a guess. After you block out any 0s and block in behind the parallel arrows in the 1s, you are done. At that point you usually must guess. Guessing ruins it for me. I have paid 5 bucks for a game that exhausts itself quickly.

Nanomeister about Jabeh