Level 1051 is the eleventh level in Mellow Marshmallow and the 482nd jelly level. To pass this level, you must clear 4 single and 33 double jelly squares in 50 moves or fewer.
When you complete the level, Sugar Crush is activated and will score you additional points.
Your focus early on needs to be on the candy bombs.
Note that the columns of three candy bombs on each side have hidden exits diagonally below the columns - if you blast those cells a candy bomb or two will spill out. This might help you clear some of those bombs, although you still need to clear the jelly from those columns. But most bombs are in really pesky corners, along with dispensers for fresh bombs.
You will need colour bombs, the frogtastic and/or well-positioned combinations to attack those hard to reach places. There are four blockers near the centre, making it much harder to make special candies and combinations until they are gone.
With only 20 moves until one or more bombs get you, you will need to plan moves that ideally do more than one thing in the early stages - e.g. attack a blocker while feeding the frog.
Once most of the blockers are gone, you have a good chance to make the special candies you need. A colour bomb is mighty helpful, especially if you can combination it with a striped candy.
If you place your frogtastic well, probably towards a corner to clear one of those hard-to-reach bombs, you might get a second go with "Frogtastic" to help clear the final jellies.