Feature:1. Improve Ability: Can help everyone learn to think calmly, relieve stress, enhance analytical skills, and improve logical thinking skills.2. Drawer Design: The built in slide out drawer allows easy storage of game parts when not in use, so that they can be easily accessed and not easily lost.3. Suitable For The Elderly To Play: Prevent senile dementia, help the elderly kill time, relieve boredom, entertain and invigorate the brain.4. High Quality Material: Using natural wood materials, dense and clear texture, anti impact, not easy to crack, safe and eco friendly, durable for use.5. Wonderful Gift: Compact and portable, suitable for different occasion, such as family gathering. Perfect gift for elders, leaders, colleagues, children, etc.Specification:Item Type: Math PuzzleMaterial: New Zealand PineScope of Application: To send elders to relieve boredom and improve their brains, to send leaders and colleagues to relieve work pressure, and to send children to promote wisdom. Package List:1 x Chessboard100 x Chess Pieces1 x Manual