{"product_id":"order-21-perfect-square-puzzle","title":"Order 21 Perfect Square Puzzle |  Mathematical Brain Teaser","description":"\u003cp\u003e\u003cstrong\u003eDiscover the beauty of geometric dissections with the Order 21 Perfect Square Puzzle.\u003c\/strong\u003e Based on a groundbreaking mathematical discovery by A. J. W. Duijvestijn in 1978, this unique puzzle challenges you to arrange 20 wooden squares inside a frame, leaving an opening for the smallest 21st square, which is laser-engraved on the frame.\u003c\/p\u003e\n\u003c!-- Embedded Video --\u003e\n\u003cdiv style=\"text-align: center; margin-bottom: 20px;\"\u003e\u003ciframe title=\"Order 21 Perfect Square Puzzle\" src=\"https:\/\/www.youtube.com\/embed\/-6AV3xTz7b4\" height=\"315\" width=\"560\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch3\u003eA Historic Mathematical Challenge\u003c\/h3\u003e\n\u003cp\u003eThis puzzle represents the only known perfect square dissection of order 21, an important mathematical achievement. It provides an engaging way to explore geometry, logic, and spatial reasoning.\u003c\/p\u003e\n\u003ch3\u003ePremium Handcrafted Design\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMade from high-quality hardwood\u003c\/strong\u003e for durability and a beautiful finish.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLaser-etched precision\u003c\/strong\u003e ensures each piece fits perfectly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrame size:\u003c\/strong\u003e The completed puzzle forms a square with a side length of 112 units.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWho Will Love This Puzzle?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMath Enthusiasts:\u003c\/strong\u003e A must-have for those fascinated by geometric dissections.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePuzzle Lovers:\u003c\/strong\u003e A unique and rewarding challenge for serious solvers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEducators \u0026amp; Students:\u003c\/strong\u003e A hands-on tool for teaching math and logic in an interactive way.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy Choose This Puzzle?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEducational Value:\u003c\/strong\u003e Encourages critical thinking and problem-solving skills.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHistorical Significance:\u003c\/strong\u003e Based on the only known perfect square dissection of order 21.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGreat Gift Idea:\u003c\/strong\u003e Ideal for puzzle collectors, math teachers, and anyone who loves a challenge.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eMade in the USA\u003c\/h3\u003e\n\u003cp\u003eDesigned and handcrafted by \u003cstrong\u003eCreative Crafthouse\u003c\/strong\u003e in Hudson, FL.\u003c\/p\u003e","brand":"Creative Crafthouse","offers":[{"title":"Default Title","offer_id":50680645058744,"sku":"Order21","price":30.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0642\/1125\/5480\/files\/order-21-perfect-square-puzzle-mathematical-brain-teaser-creative-crafthouse-876108.jpg?v=1762105096","url":"https:\/\/www.creativecrafthouse.com\/es\/products\/order-21-perfect-square-puzzle","provider":"Creative Crafthouse","version":"1.0","type":"link"}