Serpents' Nest

Stretch the serpents to fill the board. Each serpent must be exactly the length shown in its starting circle. The only other rule is that a serpent cannot double back or touch itself. Each puzzle has only one solution.

The game contains hundreds of puzzles, with a range of difficulties. (Select puzzle size in the Settings screen.)

Controls: just drag the serpents. The buttons at the bottom are Retry, Undo, Hint and Settings. You can press Hint several times to get more of the solution.