User blog comment:LucasH181/Level Ideas/@comment-24332555-20140728002224

4 is easy--just defuse 6 of 8 bombs. Or, use a color bomb booster to cheat.

5 is also easy because the target score is incredibly low for 50 moves, even more so if there is a color bomb available to be made. Hitting 1 bomb with color bomb will get it done.