Student Tournament Practice
Practice with the rules of the 全日本学生連珠選手権 — Japan's student Renju competition. 15×15 board with Black forbidden moves (禁手) — 三三, 四四, 長連. For elementary, middle, and high school students.
The 全日本学生連珠選手権 (Japan Student Renju Championship) is Japan's premier student Renju competition, organized by the Japan Renju Federation. Below are the core rules used in the competitive divisions, which this practice board enforces automatically.
Played on a 15×15 grid. One player uses black stones, the other white stones. Black always moves first.
The first player to form an unbroken line of five stones horizontally, vertically, or diagonally wins. White may also win with five or more (overline allowed for White). Black must form exactly five — six or more is a forbidden move.
To balance Black's first-move advantage, Black is forbidden from creating three patterns. If Black plays a forbidden move, Black loses immediately:
Black can only win by a 四三 (Four-Three) — one four and one three from the same move.
The championship features divisions for elementary school (小学生), middle school (中学生), and high school (高校生) students. Each division lets students compete against peers of similar age and experience.
Note on the rule system: The student championship follows standard Japanese Renju rules. Some younger divisions may use simplified rules, but the competitive divisions use the full 禁手 rules (三三, 四四, 長連). This practice board enforces the full 禁手 rules so students can train against the competitive standard.
The 全日本学生連珠選手権 (Japan Student Renju Championship) is Japan's premier student Renju competition. It is organized by the Japan Renju Federation and held annually, providing a national stage for young Renju talent.
The championship exists to promote Renju among young players. By offering divisions for elementary, middle, and high school students, it gives players a clear path from their first games to competitive play against peers nationwide.
Strong student performers often go on to compete in the All Japan Renju Meijinsen, Japan's most prestigious Renju title. The student championship is therefore an important stepping stone toward the highest levels of Japanese Renju.
Black has three types of forbidden moves: 三三禁手 (double three) — creating two or more live threes in one move; 四四禁手 (double four) — creating two or more fours in one move; and 長連禁手 (overline) — forming six or more consecutive stones. If Black makes any of these moves, Black loses the game.
No. White has no forbidden moves. White can win with five, six, or more consecutive stones. The restrictions apply only to Black to compensate for the first-move advantage.
The championship features divisions for elementary school (小学生), middle school (中学生), and high school (高校生) students. Each division lets students compete against peers of similar age and experience.
No. In Renju rules, Black can only win with exactly five consecutive stones. Six or more is a 長連禁手 (overline) and results in an immediate loss for Black. White, however, can win with five or more.
Yes. Strong student performers often go on to compete in the All Japan Renju Meijinsen, Japan's most prestigious Renju title. The student championship is therefore an important stepping stone toward the highest levels of Japanese Renju.