This puzzle is designed by Stewart Coffin too. The aim of this puzzle also moving one of the beads to the other loop and putting two beads on same loop.This puzzle is a more complex version of “Sleeper stopper“. Rope arrangement is visible from photo but you can find also this puzzle in his 1985 edition puzzle craft book. Both end of the rope are fixed to the wooden block. For this you must drill a small hole according to your rope dimension and glue the rope ends into this hole. I made this puzzle from 20×20 mm ready stock. Wooden part dimensions 20x20x100 mm and rope hole is 10 mm. I advise making wooden block larger and holes bigger than mine. 20x40x100 mm wooden block and 20 mm holes may be a better dimension. Wooden beads are from a craft store. I decorated wooden block by painting with acrylic paint. I rounded corners of wooden block by sanding. You can see original puzzle made by Stewart Coffin from here. This puzzle also looks impossible to solve.
This puzzle consist of four pentomino pieces and a tetramino “L”. You can read more about this puzzle and you can see the beautiful original craft example of this puzzle from this article “What’s new in Polyomino Puzzles and Their Design” written by Stewart Coffin and Jerry Slocum.
The original of this puzzle has a two sided tray. I saw on internet some commercial productions also made with a two sided tray. I am a lazy craftsman and for this reason making a two sided tray was too much work for me. When I decided to make this puzzle, the origial shape of this puzzle inspired me a house shape. Instead of making a two sided tray, I made a simple chimney. The aim of this puzzle removing the small cube from the chimney and putting it into the house.
Before long years ago, people was using stoves for heating their houses. When the spring arrive, people was dismounting that stoves and putting them to the basement. This design theme fits to this old tradition. I made puzzle pieces from 20×20 mm ready stock. I advise making the box approx. 2-3 mm bigger than pieces total dimensions. As you can see from photo, roof angle is 45°. I made the box frame from 20×10 mm ready stock. The base of the box is 3 mm plywood. Small cube on the chimney is a 20×20 mm block. The hole is 6 mm.
Thanks to Mr.Stewart Coffin from here for this nice puzzle design. To the base of the box two 20x20x30 mm pine (yellow) block fixed.