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.
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.
20250126 (2025-01-26). On Abstract Play since 2025-01-27.