Dic Sonneveld Książki

The 15 Puzzle Book contains an illustrated history of one of the most popular and important mechanical puzzles of all time. It can be argued that the 15 Puzzle in 1880 had the greatest impact on American and European society of any mechanical puzzle the world has ever known. Books by famous mathematicians tell that a deaf mute invented the 15 Puzzle but other sources claim it was invented by Sam Loyd, who Martin Gardner called, "America's greatest puzzle designer." Or has Sam Loyd, who claimed to invent the puzzle, continued to fool the world for more than 100 years?The true story of the puzzle is told here for the first time:- The real inventor and his patent application records were found.- The story of how the puzzle came to be manufactured.- Proof that the 15 Puzzle is mathematically impossible to solve.- How a young New Yorker solved it.- The worldwide puzzle craze that it created.Distributed for Slocum Puzzle Group

This book presents a little-known and ingenious artifact of the Roman world: a small puzzle padlock whose font plate bears a face or 'mask' of 'Celtic' style. The padlocks were designed to secure small bags or pouches and their distribution extended across Europe with the majority found in the Danubian region and in the vicinity of Aquileia. The authors examine the cultural context, the origins and uses of the padlocks, and provide detailed solutions to the puzzle mechanisms. The publication provides a fully illustrated catalog of the known 156 examples, categorizes their types according to construction and style, and explores the technicalities of the subject by the process of constructing replica mask puzzle padlocks.