Candy Crush Saga level 421 is now easier!
The orders have been reduced from 7 combos to only 5 on PC.. Mobiles will be updated later.
The whole strategy for this level rides upon exactly when you destroy the cakes. The ideal situation is to destroy two on the same side, then work exclusively on one side making striped candy before destroying the other two. This narrows the field a little, meaning striped candies end up closer to each other. Or, failing that, destroy the two at the top and use the 'ledge' on the remaining cakes to build striped combos.
You just have to remain aware of exactly when the next cake is going to 'blow' because it will destroy everything on the board, including your striped candy. As always matches are easiest to make in the bottom row, but try to make them wherever you can. Colour bombs can help by reducing the number of candy colours on the board, so don't always overlook them in favour of a striped candy.