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With this sophisticated interlocking puzzle, two pieces of the same color with different designs have to be puzzled out of a three-dimensional grid frame and later put back into the puzzle. For the first wooden part, 21 steps are required for the removal, and 3 more for the second. There is only one solution.Playing time: 10 - 15 minutesLearning objective: spatial thinking are written in GermanAuthor: Dr. Christoph Lohe, Germany, 2018Design: ROMBOLMaterial: Helvea wood, Samena wood
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