Play five in a row against the computer on a 15 × 15 board. Choose a difficulty and rules, or defend against the first-player winning strategy. Free to play in your browser.
Five or more allows overlines. Exactly five requires exactly five for either color. Black forbidden moves reject double-three, double-four and overlines; white wins with five or more. Tournament opening protocols are not included.
The computer plays black, opens in the center and uses a prepared winning strategy with continued search. Both colors must make exactly five. Difficulty, colors and forbidden moves are fixed. If a continuation cannot be calculated, retry or undo.
Yes. Play against the computer on desktop or mobile. Your game and settings stay in this browser; clearing site data deletes them.
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