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Frans de Vreugd and the Hardest Board Burr Ever...
A board burr hides nothing. You can look straight through it and watch every piece move. Frans de Vreugd still built one that takes 70 moves to come apart, and...
Frans de Vreugd and the Hardest Board Burr Ever...
A board burr hides nothing. You can look straight through it and watch every piece move. Frans de Vreugd still built one that takes 70 moves to come apart, and...
How to Get the Hedgehog Out of the Cage
A spiked ball in a slotted barrel. It moves freely the whole time, which is exactly why people shake it for an hour and get nowhere. The Hedgehog in a...
How to Get the Hedgehog Out of the Cage
A spiked ball in a slotted barrel. It moves freely the whole time, which is exactly why people shake it for an hour and get nowhere. The Hedgehog in a...
The Soma Cube: 240 Solutions and the Ones That ...
Piet Hein worked it out during a physics lecture in 1933. Seven pieces, twenty-seven cubes, and 240 different ways to finish - which is exactly why the modern versions take...
The Soma Cube: 240 Solutions and the Ones That ...
Piet Hein worked it out during a physics lecture in 1933. Seven pieces, twenty-seven cubes, and 240 different ways to finish - which is exactly why the modern versions take...
Two Chess Puzzles You Solve With Your Hands
A chess puzzle usually means a diagram and a tactic. These two are objects on your desk, where the pieces move by chess rules and the real problem is that...
Two Chess Puzzles You Solve With Your Hands
A chess puzzle usually means a diagram and a tactic. These two are objects on your desk, where the pieces move by chess rules and the real problem is that...
How to Solve the Three-Piece Block
Ten cubes in three pieces, and a target you can picture perfectly. The Three-Piece Block still takes most people an hour, and the reason is the grid you are assuming.
How to Solve the Three-Piece Block
Ten cubes in three pieces, and a target you can picture perfectly. The Three-Piece Block still takes most people an hour, and the reason is the grid you are assuming.
Osanori Yamamoto and the Apparent Cube
Osanori Yamamoto builds cubes that are not there. Solved, you see a solid block; apart, two small pieces and a lot of empty air. A guide to the apparent cube.
Osanori Yamamoto and the Apparent Cube
Osanori Yamamoto builds cubes that are not there. Solved, you see a solid block; apart, two small pieces and a lot of empty air. A guide to the apparent cube.