A puzzle with plenty of pieces but with no box to glance at to get a view of the finished product.

And as that puzzle is coming together, suddenly the pieces may not fit anymore. All the while the puzzle has a definite time in which it needs to be completed.

That is the challenge Wisconsin high school athletic directors are encountering this winter as they strive to piece together schedules for the prep sports teams at their schools amid the ongoing COVID-19 pandemic.