{"title":"Ivan Moscovich's Mastermind Collection S","description":"\u003cp\u003eChallenge your mind with Ivan Moscovich's Mastermind Collection. Packed with puzzles, illusions and mathematical recreations, these books offer hours of engaging fun for puzzle enthusiasts of all ages. Explore now!\u003c\/p\u003e","products":[{"product_id":"loopy-logic-problems-and-other-puzzles-book-ivan-moscovich-9781402727443","title":"Loopy Logic Problems and Other Puzzles","description":"Calculate velocity; explain the Maltese cross mechanism that's the basis of the motion picture projector; and work out the ways different pendulums (including Foucault's famous version) swing. This eleventh collection offers puzzle to discern the logic of a number pattern in a partially filled-out grid and discover the missing numerals.","brand":"WoB","offers":[{"title":"GB \/ VERY_GOOD \/ INTERNAL","offer_id":49549838221585,"sku":"GOR002451468","price":0.0,"currency_code":"GBP","in_stock":true},{"title":"GB \/ GOOD \/ INTERNAL","offer_id":49649872339217,"sku":"GOR004831476","price":0.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4072\/6801\/files\/1402727445.jpg?v=1751440162"},{"product_id":"tough-topology-problems-and-other-puzzles-book-ivan-moscovich-9781402727320","title":"Tough Topology Problems and Other Puzzles","description":"Colorful geometrical pentagons, composed of pentagons and triangles and dissected into pieces: Can you put the shapes together again to form a whole? A classic paradox about the nature of motion from a famous Greek mathematician: Can you see what's wrong with it? Put on your thinking cap and prepare to give your math and logic abilities a workout, because these super-looking puzzles demand real brainpower. Solve a graphic problem that involves the calculation of a square root. Examine six linear processions of egg-carrying ants, and figure out which lines are \"surprising\" and which ones aren't. Go step by step through a multihued grid and try to find 32 different configurations within. These puzzles are challenging, entertaining, and satisfying to unravel.","brand":"WoB","offers":[{"title":"GB \/ VERY_GOOD \/ INTERNAL","offer_id":49573898453265,"sku":"GOR004134620","price":0.0,"currency_code":"GBP","in_stock":false},{"title":"GB \/ GOOD \/ INTERNAL","offer_id":49916510765329,"sku":"GOR004928523","price":0.0,"currency_code":"GBP","in_stock":false},{"title":"US \/ GOOD \/ SBYB","offer_id":49989800624401,"sku":"CIN1402727321G","price":0.0,"currency_code":"GBP","in_stock":false},{"title":"US \/ VERY_GOOD \/ SBYB","offer_id":51325806117137,"sku":"CIN1402727321VG","price":0.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4072\/6801\/files\/1402727321.jpg?v=1751018731"},{"product_id":"brain-flexing-balance-problems-and-other-puzzles-book-ivan-moscovich-9781402727337","title":"Brain-flexing Balance Problems and Other Puzzles","description":"Presents puzzles in perpetual motion brought to you from the prolific puzzle-master Ivan Moscovich. This book contains brainteasers that focus on ingenious, moving mechanisms. It also includes problems that deal with gears and levers, while still more shift to number, counting, and calculation challenges.","brand":"WoB","offers":[{"title":"GB \/ VERY_GOOD \/ INTERNAL","offer_id":49618414534929,"sku":"GOR004358410","price":0.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4072\/6801\/files\/140272733X.jpg?v=1751051195"},{"product_id":"peerless-probability-problems-and-other-puzzles-book-ivan-moscovich-9781402727450","title":"Peerless Probability Problems and Other Puzzles","description":"Contains puzzles that illustrate some of the classic theories in math, logic, and perception. Stare at hued concentric circles, inspired by the \"video active\" paintings of the Parisian artist Isia Leviant; if you continue to look long enough, a spinning white blur will appear.","brand":"WoB","offers":[{"title":"GB \/ VERY_GOOD \/ INTERNAL","offer_id":51421069410577,"sku":"GOR004426095","price":0.0,"currency_code":"GBP","in_stock":true},{"title":"US \/ GOOD \/ SBYB","offer_id":51423725158673,"sku":"CIN1402727453G","price":0.0,"currency_code":"GBP","in_stock":false},{"title":"US \/ VERY_GOOD \/ SBYB","offer_id":51424316031249,"sku":"CIN1402727453VG","price":0.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4072\/6801\/files\/1402727453.jpg?v=1751444481"}],"url":"https:\/\/www.worldofbooks.com\/collections\/ivan-moscovich-s-mastermind-collection-s-book-series.oembed","provider":"World of Books ","version":"1.0","type":"link"}