Warm-up
The gentlest set in Filoop: eight boards from 5×5 up to 8×8, two of each size, with 3 to 8 threads.
Nothing here needs guessing. Look around and there is always a thread with only one way to go: a button in a corner, a cell squeezed between two threads, a narrow corridor along the edge. Lay that piece, look again, repeat. The whole board falls into place this way.
Play it if you are new to the game, or if you want to warm up before the daily puzzle. If you get stuck, the trick is in forced moves and corners and edges. The basic rules are on How to play.