JP3241064U - A regular tetrahedral three-dimensional puzzle composed of spheres - Google Patents

Abstract

[Problem] To provide a three-dimensional puzzle that can be enjoyed for a long period of time, in which it is difficult to determine the position where each piece is to be assembled, and there are many ways to assemble the puzzle. SOLUTION: A three-dimensional puzzle that can be enjoyed repeatedly for a long period of time has many pieces including complicated shapes as constituent elements of the puzzle. Combining all or part of 25 types of 30 pieces in which 4 spheres are arranged two-dimensionally or three-dimensionally in a close-packed structure, one side is composed of 8, 4, 6, or 7 spheres. It is a puzzle that creates a regular tetrahedron-shaped three-dimensional object. [Selection drawing] Fig. 1

Description

The present invention relates to a regular tetrahedral three-dimensional puzzle made by combining various pieces in which spheres are arranged in a close-packed structure.

Conventionally, two to five spheres are joined together to assemble a regular tetrahedral three-dimensional figure (hereafter referred to as a "tetrapyramid") consisting of several spheres on each side. "(Non-Patent Document 1), "Devil's Pyramid" (Non-Patent Document 2), "Wooden Pyramid Puzzle", "Ball Pyramid", "Glass Ball Pyramid Puzzle", "Pyramid Ball Puzzle", "Kolossal Pyramid", " Giant Pyramid" and other trade names. The three-dimensional objects to be assembled have a structure called close-packed sphere packing, and the three dimensional axes intersect at 60 degrees. can.

"004 Difficult Pyramid Puzzle" Biweekly Puzzle Collection Revised Edition No. 4 "056 Devil's Pyramid" Biweekly Puzzle Collection Revised Edition No. 56

In conventional 3D puzzles that assemble the Tetra Pyramid, most of the pieces are two-dimensional, and the number of pieces is small, and in many cases there are multiple pieces of the same shape, so it is relatively easy to find the solution. . There are few assembly procedures and not many solutions, and the procedures can be easily memorized without repeating them.

An object of the present invention is to provide a three-dimensional puzzle in which it is difficult to determine the position of each piece to be assembled, there are many ways of assembling, and even adults can enjoy it for a long time.

In order to solve the above problems, the present invention further adds 25 types of pieces in which 4 spheres are arranged two-dimensionally or three-dimensionally in a structure called close-packed sphere packing, and 5 of the 25 types of pieces. It is a three-dimensional puzzle with a high degree of difficulty that uses all or part of these 30 pieces to assemble a "Tetra Pyramid".

Since the present invention uses a large number of two-dimensional or three-dimensional pieces as constituent elements, the assembly procedure becomes complicated and the difficulty of the puzzle increases. Also, since there are many ways to build, you can try many times to find various solution procedures. In particular, the puzzle that uses all 30 pieces to create an 8-level "Tetra Pyramid" is highly difficult and can be enjoyed for a long time.

If you feel it is too difficult to assemble an 8-stage "tetra-pyramid" with 30 pieces, you can combine some pieces to make a smaller "tetra-pyramid". If you choose 5 out of 30 pieces and combine them, you can make a 4-tiered "Tetra Pyramid". Similarly, 14 pieces and 21 pieces can be combined to make a "tetra pyramid" with 6 steps and 7 steps, respectively.

Shapes and symbols of the 25 pieces that make up the puzzle Perspective view of the answer example of the 8-level "Tetra Pyramid" combining 30 pieces and the 4-level "Tetra Pyramid" combining 5 pieces Perspective view of the answer example of the 7-tiered "Tetra Pyramid" combining 21 pieces and the 6-tiered "Tetra Pyramid" combining 14 pieces

Hereinafter, an example of a form for carrying out the puzzle of the present invention will be described based on the drawings. In FIG. 1, 25 types of pieces in which four spheres are arranged in a close-packed structure and their symbols are indicated by a to y. Of these, 14 types of pieces a to e, p to w, and y, which have three-dimensional and three-dimensional structures, are shown in front and side views.

Since a total of 30 pieces are required to assemble the 8-stage "Tetra Pyramid", the entire puzzle is composed of 2 of each of the 5 kinds of pieces and 1 of each of the other 20 kinds of pieces. In the example of Fig. 1, in order not to make the puzzle too difficult, the pieces that are used two by two have a planar shape represented by symbols f, h, i, j, and k that make it easy to grasp the shape and the position to be placed. Five types of two-dimensional pieces are selected. Each of the other 20 types of pieces a to e, g, and l to y is a component of the puzzle.

手順で新たに加えたピースには、符号および隣接する他のピースと区別するための模様を付けている。前の手順で配置済みのピースは実線、模様無しで示している。

Newly added pieces in the procedure are labeled and marked to distinguish them from adjacent pieces. Pieces that have been placed in the previous step are shown with solid lines and no pattern.

配置している。

are placed.

でｆを配置しており、これで全体で３０個のピースを組合せた８段の「テトラピラミ

トラピラミッド」の解答例にもなっている。

In this way, 30 pieces in total are combined to form an eight-tiered tetrapyramid.

It is also an example of an answer to the Tiger Pyramid.

る点線は、テトラピラミッドの最低部（１段目）の球の配置予定位置である。

The dotted line in the figure is the planned placement position of the sphere at the lowest part (first stage) of the tetrapyramid.

ている。

ing.

Each piece that constitutes the puzzle of the present invention has a structure in which four spheres are connected, and the material can be wood, metal, various plastics, etc., and can be manufactured by industries that handle these materials. In the case of wood, it is possible to connect four wooden balls with glue or by embedding a shaft. When manufacturing with metal or plastic, the shape is deformed so that the joints of the four spheres that make up the piece touch not at points but at surfaces. There is no limit to the size of the spheres that make up the pieces, but since wooden balls with a size of about 2 to 3 cm are widely available on the market, this size is considered appropriate for manufacturing. It becomes a regular tetrahedral solid of about 20 cm and can be used as an interior.

The puzzle of the present invention requires a long trial period and has many solutions, so it is highly entertaining, and can be used as rental equipment for customers at lodging facilities such as hotels and various entertainment facilities, and for entertainment at home. It can be applied for use as articles and gifts.

Code description

25 types of pieces that make up a to y puzzles

Claims (4)

A sphere with one side made by combining 25 types of pieces in which 4 spheres are arranged in a close-packed structure in 2D or 3D, and 5 of the 25 types are added for a total of 30 pieces. A tetrahedron-shaped three-dimensional puzzle consisting of eight pieces. A regular tetrahedral three-dimensional puzzle composed of four spheres on each side, made by combining five of the above twenty-five kinds of pieces. A regular tetrahedron three-dimensional puzzle made by combining 14 of the 25 types of pieces and having 6 spheres on each side. A regular tetrahedral three-dimensional puzzle made by combining 21 of the 25 types of pieces and having seven spheres per side.

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