Try to form four in a row in a game without forming five in a row, but not all spaces are equal and opposing pieces can change side.

• Designer: Mitsuo Yamamoto
• Coder: Aaron Dalton (Perlkönig)
• Yonmoque rules at Logy Games (HTML)
• Yonmoque at BoardGameGeek

Place or slide on a two-coloured 5×5. Convert enemies. Four in a row wins; five in a row loses.

Inventor: Mitsuo Yamamoto

See Logy Games: Yonmoque.

A line of five of the player who just moved is a loss. Otherwise a line of four through a cell they moved to or converted is a win.

Empty 5×5. Cells are white, black, or neutral. Each player has 6 stones in hand.

Place a stone from hand on an empty cell, or slide a stone on the board: always to an empty neighbour, and further along a diagonal while staying on tiles of your effective colour.

Landing or a conversion can flip enemy stones according to the tile colours.

No engine variants.

• Current engine version: 20250126 (2025-01-26). On Abstract Play since 2025-01-27.

• http://www.logygames.com/english/yonmoque.html
• https://boardgamegeek.com/boardgame/86170/yonmoque