The pieces of this puzzle have engraving on one side only. There are 42 solutions with all of the pieces facing up. There are an additional 858 solutions with some of the pieces flipped upside down. A moderate challenge.
- red alder and black walnut wood
- 17 pieces
- 900 solutions
- 6″ x 6″ (15cm x 15cm)
- difficulty level: 3 out of 10
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