This level is currently nearly impossible to beat without boosters (or even with boosters). This is likely caused by a level buff, lack of moves, an objective which requires insane luck to fulfill, a level glitch, or a design error. This level is currently, or likely one of the hardest levels of the game.
Level 660 is the tenth level in Fizzy Falls and the 136th mixed mode level (95th jelly-order). To pass this level, you must clear 284 single jelly squares, collect 16 jelly jars and 64 toffee swirl layers in 20 moves or fewer.
When you complete the level, Sugar Crush is activated and will score you additional points.