This design renders the strokes from flow fields as a series of dots. The colours of the dots correspond to the orientation of the stroke, the total length of the stroke, and how far through the stroke the dot is.
This was a terrifically difficult and unenjoyable puzzle to solve because there was very little continuity of the strokes between the pieces, and the colours aren't significantly distinguished across the design to be able to group in any meaningful way.
Each jigsaw is designed and developed entirely in the browser. Above are some random outputs generated on the fly just for you – crack open the explorer for finer control of the parameters.