Before revision: Some notable creators of puzzles are: Ernő Rubik Sam Loyd Henry Dudeney Boris Kordemsky David J. Bodycombe Will Shortz Oskar van Deventer Lloyd King Martin Gardner Raymond Smullyan History of puzzles The nine linked-rings puzzle, an advanced puzzle device that requires mathematical calculation to solve, was invented in China during the Warring States period (475-221 BCE).
After revision: Some notable creators of puzzles are: Ernő Rubik Sam Loyd Henry Dudeney Boris Kordemsky Will Shortz Oskar van Deventer Lloyd King Martin Gardner Raymond Smullyan History of puzzles The nine linked-rings puzzle, an advanced puzzle device that requires mathematical calculation to solve, was invented in China during the Warring States period (475-221 BCE).