OSHIRO Game 35 (Three Five)
The 'OSHIRO' game addresses the lengthiness and lack of action in traditional Othello by using a 5x5 grid board and rice sack-shaped pieces, resulting in quicker and more thrilling gameplay.
Patent Information
- Application Number
- JP2024003920U
- Authority / Receiving Office
- JP · JP
- Patent Type
- Utility models
- Current Assignee / Owner
- Filing Date
- 2024-11-07
- Publication Date
- 2025-05-23
- Estimated Expiration
- 2034-11-07
AI Technical Summary
Traditional Othello games are lengthy and lack thrilling action.
A modified table game, 'OSHIRO,' played on a 5x5 grid board with rice sack-shaped pieces, where the first half is played in a 3x3 inner moat and the second half on the outer perimeter, allowing for quicker gameplay and increased speed.
The game is significantly faster than traditional Othello, with enhanced speed and excitement due to the smaller board and unique piece design.
Smart Images

Figure 0003251382000001_ABST
Abstract
Description
[Technical field]
[0001] This invention is a table game that adds elements of 5 in a row to the traditional Othello game and can be enjoyed in a small space. The 5x5 grid board is likened to a castle, with a moat around the perimeter and the 3x3 squares inside the castle as the interior, making it an "OSHIRO game." [Background technology]
[0002] The game is called Othello, and involves competing to see who can capture the most pieces on an 8x8 board, using circular pieces of white and black on one side, with the other piece being a piece of your own color. Summary of the Invention [Problem to be solved by the invention]
[0003] Traditional Othello games took a long time to reach a conclusion and didn't offer much thrilling action. [Means for solving the problem]
[0004] In this game, players move rice sack-shaped pieces with different colors on the front and back alternately, and can flip the opponent's pieces over to become pieces of their own color by sandwiching them between their own pieces. The game is played on a 5x5 board, but the first half is played in the 3x3 inner moat (within the castle). The first player must place their first move on the central arrow (Ichi no Ya), and the second player must place their piece in the 3x3 inner moat (within the castle). After that, the second half begins in a game of 3x3, when all 9 squares of the 3x3 inner moat (within the castle) are filled. The second half is played in a game of 5x3, where players place their pieces on the outer moat (perimeter). Players can choose to add 3, 5, or 7 pieces. In other words, if 3 pieces are added, the total number of pieces is 12, if 5 pieces are added, the total number of pieces is 14, and if 7 pieces are added, the total number of pieces is 16. Once all the pieces are in place, all the pieces on the board can be moved. The first person to line up five colored pieces in a straight line is the winner. Effect of the Invention
[0005] It is similar to the traditional game in which two colored pieces are sandwiched, flipped over, and arranged, but the small 5x5 space means that games can be played in the blink of an eye, and by making the pieces shaped like rice bags, they are easier to grasp and increase the sense of speed. [Brief description of the drawings]
[0006] [Figure 1] This is the board of this invention. The area within the thick line is the inner moat (within the castle), and the area around it is the outer moat. In the center square, there is a picture of a bow and arrow. [Diagram 2] A piece of this invention. It is shaped like a rice bale. [Diagram 3] This is a winning / losing table for this invention.
Claims
[Claim 1] This invention is a table game that uses two-colored rice bale-shaped pieces in a 5x5 grid, where players place their pieces between their opponents' pieces, flipping them over and arranging them upside down, adding an element of 5 in a row to enjoy the speed and thrills. The title of the game, "OSHIRO Game," comes from the game content, which imagines the outer perimeter as a moat and the area inside as a castle, where players attack and defend.