『2025 January 5th "Igo Day" SALE』 3-piece Go set for 15mm Diameter Go stones 412-IG15-05

Go Board：Hyuga Kaya table Go board with 0.9-Sun Masame made for 15mm diameter Go stones.
The board is made of Tachimori-finished with Japanese lacquer.
Beautiful board with straiht grain patterns.
The top, the bottom, and the both sides have some intergrown knots.
Please check the picture.
Please check the size comparison image.

Go stone：These are Clamshell White Go stones and Nachiguro black Go stones with a diameter of 15 mm, about 30% smaller than regular Go stones (21.9 mm in diameter).
The thickness of the Go stones is about 15 mm in diameter, and the ratio of diameter to thickness is about the size of a typical size 32.
Please check the size comparison image.
Clamshell White Go Stones are made from Mexican clam shells.
Nachiguro Black Go Stone is made from Nachiguro Black Stone produced in Kumano City, Mie Prefecture.

Clamshell Go stones are manufactured by Go stones craftsmen one by one through more than 20 manufacturing processes. It takes about 2 to 6 months from the
Clamshell materials to the product.
Please experience the brilliance of Go stones carved by traditional Go stones craftsmen, the techniques of making Go stones that have been handed down for over 100 years.

Go Bowls：Miniature Go Bowls made of Honkuwa[Mountain mulberry] for 15mm diameter Go stones by Kaishi.
Go bowls are made from Honkuwa [Mountain mulberry], that is very popular and highest quality material to make bowl.
Mulberry wood has a beautiful yellowish wood color, and when polished, it appears golden with a unique texture. The wood is extremely hard and is even used to make walking sticks, which require great strength.
*There are miniature Go Bowls for 15mm diameter Go stones.
Please check the size comparison images.

"Kaya" is regarded as one of the best materials to make Go and Shogi boards, because of its good sound and feel when placing the stones, moderate elasticity, beautiful grain, color, gloss and luster, and aroma.

"Hyuga kaya" is a special type of close-grained Japanese nutmeg tree grown and harvested in a mountainous area in the southern part of Kyushu, Japan.

The reason why Hyuga kaya from Miyazaki Prefecture is of the highest quality is because of the natural environment in which the tree grows.
The climate in southern Kyushu and the Miyazaki area has relatively big temperature differences between daytime and night time, a lot of rainfall, and strong direct sunlight, all of which help trees to produce clear-grain grains.
The wood grows on rocky terrain and requires several hundred years to grow into a tree large enough to be used as Go board material.
This is why it is considered a top-quality product, due to its rarity as well as its wood quality.
The grain of the wood is very fine and dense, so it rarely causes warpage or distortion.

Hyuga kaya boards are used in various title matches and famous tournaments.
The sound of the placing of stones on the board is very clear. Moreover, as it is used over the years, it will take on a refined candy-colored luster, further enhancing its maturity.

*Go board materials are explained detail in "How to choose a board".
Please take a look.
Go to "How to choose a board".

"Masame" cutting style has masame (straight grain) only on the top surface of the board.
The bottom surface has "Itame (flat grain)".
The general "Masame" boards belong to this type.
The top surface is beautifully finished so the "Masame" board is highly valued.

*Go board cutting styles are explained detail in "How to choose a board".
Please take a look.
Go to "How to choose a board".

When the material itself is too large in diameter to make a one-piece board, or when the board cannot be made from a single piece of wood for any reason, it is sometimes made by joining pieces of wood together.

A board made in this way is called a "tsugi-ban" or "hagi-ban" (joined or composite board).
There are several types of these boards and the ones with a fewer number of pieces, with less variation in color and grain, are regarded as more valuable.
When using a composite board, we collect material wood that is as close as possible in wood color and grain in order to make the board as consistent as possible.
Then, the joints are precisely calculated and bonded together so that the lines are placed right over the joints as much as possible. (Not ensured in some cases)

In fact, we spend more time and effort to produce tsugi-ban boards, which are slightly less valuable than one-piece boards.
The composite board also has some advantages: since multiple pieces of material are joined in parallel, each piece is narrower and less prone to warping.

* "composition board" is explained detail in "How to choose a board".
Please take a look.
Go to "How to choose a board".

• Go Board：Hyuga Kaya table Go board 0.9-Sun Masame 5-piece composition
  Product No：NO.76921
  Size：316 ㎜ × 291 ㎜ × 30 ㎜
  Weight：abot 1.3㎏
  
• Go stone：Clamshell White Go stones and Nachiguro black Go stones with a diameter of 15 mm
  *It is about 15mm in diameter, which is smaller than the normal Go stones (21.9mm in diameter).
  Diameter：about 15㎜
  Thickness：about 6.2～6.5mm　＊It is about the thickness of size 32 in terms of normal size Go stones (ratio of diameter to thickness).
  Materials：White Go stones／Mexican clamshell, Black Go Stones／Nachi-guro Slate from Kumano City, Mie Pref., Japan
  Spare Go stones (2 for each)
  *Wooden Go stones box, Fabric Go stones bag are not included.
  
• Go Bowls：Miniature Go Bowls made of Honkuwa[Mountain mulberry] for 15mm diameter Go stones by Kaishi.
  Size：Diameter About 90㎜ × Height About 70㎜
  Weight：About 240ｇ
  *Please check the comparison image.
  

• 1,000 JPY flat rate shipping within Japan, free shipping for purchases totaling 20,000 JPY or more.
  Please bear the actual cost for shipping charges outside Japan.

You may find small knots, burrs, rolled-in bark as all these products are made of natural trees.
There may be some small flaw or scratch, dent, chipping.