Dreiecksbeziehung. Now that's a mouthful! Can you pronounce it?
Dreiecksbeziehung (German for triangle relationship) is another great design by Constantin.
The name of the puzzle is a well fitting description to understand how the triangle properties relate to the actual solution.
This is a great packing problem puzzle.
Inside the frame there are eight triangles and there's a slot in the frame's border to store the extra triangle. The goal, as it would be expected, is to try packing the ninth triangle inside the tray as well.
Note that the pieces won't fill the entire tray area. Pretty simple, but it can be rather tricky.
This is an elegant design for a great desktop puzzle.
Handmade by Jean Claude Constantin, puzzles designer, inventor, and artist.