Master Renju Fouls.
Command Every Move.
Black is bound by renju fouls (double three, double four, overline, and five first). Play, study lessons, analyze setups, and review matches powered by one unified judge.
Seven Integrated Modules
Point reading, setup, shapes, and review all use the exact same strict renju foul judge.
Play
Notice, Even, and Trap can all be chosen before the first stone. You play Black; White answers and uses any foul you miss.
Lessons
Structured progression across Basics, Shapes, and Forcing chapters to sharpen your foul recognition.
Setup
Place Black or White stones freely on the board, then read whether any intersection is a foul.
Review
Inspect completed games move by move to verify whether Black made an exact five or fell into a foul.
Notes
Every missed lesson or foul committed in a match is automatically saved on your device for focused review.
Shapes
Six classic renju shapes with fouls marked under the exact same rules as a live match.
Rules
Clear reference covering Overline, Double Four, Double Three, and the Five-First priority rule.
Four Crafted Board & Stone Themes
Click any theme card below to preview the board and stone style above.
Cypress Hall
Wood grain, thin lines, matte round stones.
Midnight Ink
Ink slate, glowing lines, glossy hex stones.
Jade Pavilion
Lacquer board, brass lines, rimmed square stones.
Coral Dawn
Carved wood, soft lines, octagon cream stones.