Each puzzle opens with a fixed ring of decagons. Fill the enclosed region using only Bobbins and Bowties — no gaps, no overlaps.
1. First Circuit
Easy4 decagons · circuit (1, 2, 1, 2)
2. Five Around
Easy5 decagons · circuit (2, 2, 2, 2, 2)
3. The Narrow Turn
Medium6 decagons · circuit (1, 2, 3, 2, 1, 5)
4. Tall Circuit
Medium6 decagons · circuit (1, 2, 4, 1, 2, 4)
5. Zigzag Circuit
Medium–Hard6 decagons · circuit (1, 3, 3, 1, 3, 3)
6. Wide Six
Hard6 decagons · circuit (2, 2, 3, 2, 2, 3)
7. Seven Around
Hard7 decagons · circuit (1, 2, 4, 2, 2, 2, 5)
8. Large Circuit
Very Hard7 decagons · circuit (2, 2, 3, 3, 2, 2, 4)