Einstein's Puzzle Box — open the secret wooden box to find a hidden compartment inside. Size: 8 × 8 × 5 cm. Solve without force. Not for children under 3.
Open the secret wooden box — that is your challenge! Size: 9.9 × 9.9 × 5.5 cm. Solve it without force. Not for children under 3 — contains small parts.
The spring on the lid connects to an internal mechanism — your task is to release it and open the secret wooden box. Size: 11 × 11 × 7.5 cm. Not for children under 3.