![This is THE DISAPPEARING BICYCLIST puzzle by 18th Century mathematician Sam Loyd. In position 'A' 13 boys are visible, but in position 'B' - only 12. One is invited to determine which This is THE DISAPPEARING BICYCLIST puzzle by 18th Century mathematician Sam Loyd. In position 'A' 13 boys are visible, but in position 'B' - only 12. One is invited to determine which](https://external-preview.redd.it/6q2rOUSJjSHmCwWLay06nxbqDRCLvXU3Udr3gykAW98.png?format=pjpg&auto=webp&s=15a5df5f67c7f246c37228a893adcd218e9f175b)
This is THE DISAPPEARING BICYCLIST puzzle by 18th Century mathematician Sam Loyd. In position 'A' 13 boys are visible, but in position 'B' - only 12. One is invited to determine which
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The Puzzle King: Sam Loyd's Chess Problems and Selected Mathematical Puzzles by Pickard, Sid, Editor - 1996
![9781886846050: The Puzzle King: Sam Loyd's Chess Problems and Selected Mathematical Puzzles: 1886846057 - AbeBooks 9781886846050: The Puzzle King: Sam Loyd's Chess Problems and Selected Mathematical Puzzles: 1886846057 - AbeBooks](https://pictures.abebooks.com/isbn/9781886846050-us.jpg)
9781886846050: The Puzzle King: Sam Loyd's Chess Problems and Selected Mathematical Puzzles: 1886846057 - AbeBooks
![Map, Novelty, Get Off the Earth Puzzle, Cartographic Curiosity, Antique, 1918 – George Glazer Gallery, Antiques Map, Novelty, Get Off the Earth Puzzle, Cartographic Curiosity, Antique, 1918 – George Glazer Gallery, Antiques](https://www.georgeglazer.com/wpmain/wp-content/uploads/2018/05/getoffearth1.jpg)