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Huarong Sliding-Block Puzzle

Mobile Science Museum · Mathematics

Operation: Slide the blocks as required to rescue "Cao Cao". Function Overview: This exhibit mainly consists of a display stand, a rectangular groove (chessboard), and 10 thin blocks of varying sizes. Visitors move the blocks using the empty spaces on the board, aiming to let Cao Cao exit through the opening in as few steps as possible, thereby exercising their independent thinking ability. Scientific Principle: Klotski is an ancient Chinese folk puzzle game. With its ever-changing and endlessly enjoyable characteristics, it is called one of the "three incredible puzzles in the puzzle world" by foreign intelligence experts, along with the Rubik's Cube and the Diamond Solitaire. Together with traditional Chinese puzzles such as the Tangram and the Nine Linked Rings, it is also known as "China's Difficult Puzzle". According to the annotations in Zizhi Tongjian, "from this path one can reach Huarong." Huarong Dao was originally a place name in ancient China. Legend has it that Cao Cao once fled in defeat through this area. At that time, Huarong Dao was a swamp, so Cao Cao's army had to cut grass to fill the ground, and many soldiers were tragically buried alive—it was extremely brutal. By moving the pieces, help Cao Cao move from the initial position to the bottom center of the board and escape through the exit. It is not allowed to jump over pieces, and one must try to move Cao Cao to the exit in the fewest steps. The biggest obstacle for Cao Cao to escape from Huarong Dao is Guan Yu. Guan Yu stands on Huarong Dao, and one man guarding the pass can hold off ten thousand. Guan Yu and Cao Cao are certainly the key to solving this game. The four soldiers of Liu Bei are the most flexible and easiest to deal with, and how to make use of them must also be fully considered. "Huarong Dao" has a board with twenty small squares, representing Huarong Dao.

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