Stiletto

Five-in-a-row where players alternate the dagger — the option to place two stones. White starts with the dagger to offset Black’s first-move advantage.

Inventors: Bill Taylor, João Pedro Neto

See World of Abstract Games: Dagger Gomoku and BoardGameGeek.

Illegal to create an open four using both dagger stones together (open4).

• Current engine version: 20260221 (2026-02-21). On Abstract Play since 2026-03-07.

• Power sits between Gomoku and Connect6 because the double move is not shared every turn.

• https://boardgamegeek.com/boardgame/465550/stiletto
• https://jpneto.github.io/world_abstract_games/dagger_gomoku.htm