グレッグ パズル ブログ

ZigZag separated board burr assembled from six flat boards

フランス・デ・フルーフトと史上最難の板組木

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...

フランス・デ・フルーフトと史上最難の板組木

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...

A spiked ball inside a metal cage, with one gap wider than the rest

ハリネズミを檻から出す方法

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...

ハリネズミを檻から出す方法

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...

Soma Cube assembled as a 3x3x3 cube

ソーマキューブ:240通りの解と、その先の難問

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...

ソーマキューブ:240通りの解と、その先の難問

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...

Queen's Attack chess puzzle on a marble surface

手で解くチェスパズル

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...

手で解くチェスパズル

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...

Three-Piece Block puzzle assembled into a pyramid of ten cubes

3ピースブロックパズルの解き方

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.

3ピースブロックパズルの解き方

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.

Lucida by Osanori Yamamoto

山本長徳と「見かけのキューブ」

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.

山本長徳と「見かけのキューブ」

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.