{"product_id":"hanayama-keyhole-metal-brainteaser-puzzle-mensa-rated-level-4-ages-12","title":"Hanayama Keyhole Metal Brainteaser Puzzle – Mensa Rated Level 4, Ages 12+","description":"\u003cp\u003eThe Hanayama Keyhole is a cast metal brainteaser puzzle rated Level 4 (moderate challenge) by Mensa, suitable for ages 12 and up. Designed by master puzzle inventors, it requires disassembly and reassembly. Made in Japan with high-quality finish.\u003c\/p\u003e\u003ch2\u003eWhat makes the Hanayama Keyhole puzzle different?\u003c\/h2\u003e\u003cp\u003eThis brainteaser combines an intricate design with a satisfying tactile feel. Its keyhole shape adds a touch of sophistication to any desk or shelf. Once solved, it works as a display piece and a conversation starter. The puzzle's elegant appearance hides a clever mechanism that challenges your logic and patience.\u003c\/p\u003e\u003ch2\u003eWhat is the difficulty level of the Hanayama Keyhole puzzle?\u003c\/h2\u003e\u003cp\u003eHanayama rates each puzzle from 1 (easy) to 6 (expert). The Keyhole is a Level 4, which means it offers a moderate challenge. It is one of the most popular ratings for puzzlers who want something harder than basic but not frustratingly difficult. Mensa, the high-IQ society, has rated this puzzle as a recommended mental workout. You first take the pieces apart, then figure out how to put them back together in the original state.\u003c\/p\u003e\u003ch2\u003eProduct specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHanayama (by BePuzzled \/ University Games)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCast metal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDifficulty Level\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4 (out of 6)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRecommended Age\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e12 years and up\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDesigner\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMaster puzzle inventors, Japan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePuzzle Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAssembly \u0026amp; Disentanglement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSafety\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNo warning applicable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\u003ch3\u003eIs the Keyhole puzzle hard to solve?\u003c\/h3\u003e\u003cp\u003eIt is rated Level 4, so it is more challenging than entry-level puzzles but not among the hardest. Most adults can solve it with persistence. The process involves disassembling the metal pieces and then reassembling them – a test of spatial reasoning and patience.\u003c\/p\u003e\u003ch3\u003eWhat age group is this puzzle for?\u003c\/h3\u003e\u003cp\u003eThe manufacturer recommends ages 12 and up. Teenagers and adults alike enjoy it. It makes a good gift for puzzle enthusiasts or anyone looking for a screen-free mental break.\u003c\/p\u003e\u003ch3\u003eAre there other Hanayama puzzles like the Keyhole?\u003c\/h3\u003e\u003cp\u003eYes, Hanayama produces over 60 different cast metal puzzles, with new ones released each year. Each has a unique design and difficulty rating from 1 to 6. Collectors often try to solve all of them.\u003c\/p\u003e\u003cp\u003eThe Hanayama Keyhole puzzle is a portable, durable brainteaser that fits in a pocket. It is perfect for fidgeting, travel, or as a desk accessory. Whether you are new to puzzles or a seasoned solver, this level 4 challenge offers a rewarding experience.\u003c\/p\u003e","brand":"Bepuzzled","offers":[{"title":"Default Title","offer_id":58074778403119,"sku":null,"price":24.59,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0986\/4478\/7503\/files\/hanayama-keyhole-metal-brainteaser-puzzle-mensa-rated-level-4-ages-12-1.jpg?v=1781474842","url":"https:\/\/toysforkid.co.uk\/products\/hanayama-keyhole-metal-brainteaser-puzzle-mensa-rated-level-4-ages-12","provider":"Toys For Kid","version":"1.0","type":"link"}