A connection game on a modified snub-square board with a capture rule.

Inventor: Larry Back

See BoardGameGeek: Onyx. Default size-12 Onyx graph (snub-square with extra vertices). Pie rule.

Larger boards.

Two stones on each opponent edge (head-start).

• Current engine version: 20240929 (2024-09-29). On Abstract Play since 2024-10-06.

• Threatened pieces can be highlighted; a display option hides them.

• https://boardgamegeek.com/boardgame/11375/onyx