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Sliding Block Puzzles - Century Puzzle


The object of this puzzle is very simple, it is to get the red square block, which is currently in the middle at the top of the frame, down to the middle at the bottom of the frame.

It is not easy!

Ma's Puzzle This puzzle was invented by John Horton Conway, a mathematician, in about 1975, when he was at Cambridge University.

He called it The Century Puzzle because it can be done in 100 moves.

Each of the ten pieces is made up of 1, 2 or 4 squares.


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