Level 594 is the fourth level in Wafer Windmill and the 263rd jelly level.
To pass this level, you must clear 9 single and 16 double jelly squares in 30 moves or fewer.
When you complete the level, Sugar Crush is activated and will score you additional points.
The level used to look like a windmill, which is a reference to the episode itself. But, it got changed.
The old shape also looked like a swastika, so the designers changed the level so they will be no misunderstandings.
The current web version was used firstly in mobile version while the web version had the windmill/swastika version. But then, the mobile version got the old windmill/swastika design back, while in the web is now the version that was formerly on mobile. It's unknown why they switched the versions, or why there isn't the same version for both mobile and web. Now both platforms have the same board and moves.