Product Specification: Product Name: Solving the Wooden Block Puzzle Challenge Material: Wooden Approximate Size: 14 x 7cm/5.5 x 2.75 inches Product Type: Jigsaw Puzzles Package Includes: 1 PC * Wooden Block Puzzle Challenge Note: 1.Due to the lighting effect and shooting Angle, the picture may not show the actual situation of the item, please refer to the actual product. 2.Since the test conditions may be slightly different from your actual situation, please allow the effect to be slightly different, thank you for your understanding. After-sales service: If you encounter any problems or disputes in the purchase process, please communicate with us in time, we will actively cooperate to solve your problems. Mind-Challenging Puzzle Design: Experience the fascinating disappearing square and triangle optical illusions that will test your spatial reasoning and problem-solving skills through unique shape-shifting mechanisms Five Different Geometric Patterns: Enjoy varied challenges with five distinct configurations including Square, Trilateral, Rhombus, Rectangle and Quadrilateral designs, each offering unique solving experiences Premium Safety Craftsmanship: Features smoothly sanded wooden pieces with rounded edges and burr-free surfaces, ensuring safe handling for both adults and children during extended play sessions Brain-Teasing Educational Fun: Perfect for developing logical thinking, concentration and patience while providing hours of engaging entertainment for puzzle enthusiasts of all age groups Quality Construction: Made from solid wood materials with multi-layer water-based paint that maintains vibrant colors through repeated use, backed by precise cutting for perfect piece alignment