Screw Puzzle
Planks are held by screws. Pick up a screw and put it into another free hole — you can never throw one away. A plank with no screws falls; a plank held by just one screw swings down around it. Drop every plank to win. Planks lie in layers and lock the screws beneath them, and a swinging plank can hook onto another screw — the order of your moves is the puzzle.
4–5 planks and plenty of free holes.
6–8 planks, shared screws and fewer holes.
8–10 planks and only one or two spare holes.
PlayHow to play Screw Puzzle →Free online screw puzzle
Screw Puzzle is inspired by the popular wood nuts & bolts games: wooden planks are pinned to a board with screws and the only thing you can do is move a screw into another empty hole. Each move changes the board — planks fall away or swing down and cover or uncover holes.
Every level on PuzzleWorld is generated and checked by a solver, so it can always be cleared; your score is best when you need no more moves than the shortest solution. Free holes are scarce, so think about which plank should go first and where a swinging plank will end up.