Start
One white stone, one liberty
Black is above, to the left, and below. Only the right point is empty. The green ring is that last liberty.
Board game
Go (Baduk)
19×19 · casual Go · Chinese area scoring
Board game
19×19 · casual Go · Chinese area scoring
Playfulo Go is casual 19×19 baduk. Practice against AI or invite a friend with no sign-up.
The board appears first; the AI loads in the background. Captures, simple ko, and no suicide. After two passes we use Chinese-area scoring with 7.5 komi.
Practice rules may differ from tournament Japanese scoring or handicap games.
Black moves first. Capture by filling the last liberty. After consecutive passes, we score the board.
Practice AI has easy, normal, and hard. Easy picks loosely among candidates, normal among top picks, hard takes the heuristic best move. A stronger neural engine can replace the same deferred-load slot later.
Near a corner. White's stone has one liberty, on its right. If Black plays there, White is captured. A move anywhere else leaves the atari. Each difficulty played this position 40 times.
Start
Black is above, to the left, and below. Only the right point is empty. The green ring is that last liberty.
Line 1 / 4
The left move fills the liberty and takes the stone. The right move adds a stone while White is still there.
All three, 40/40
When the last empty point is Black, the white stone is removed. Filling the middle of your own territory is scored differently.
Not a capture
The marked empty point is still White's liberty. A stone in atari is captured by playing that point now, not later.
The practice AI is not a neural net. It scores nearby points, and difficulty is only how far from the best score it may wander. On an empty board the first move is random among the four corner star points and the center.
11 Oct 2026: Playfulo's Go practice AI, 40 calls per difficulty, and every trial played the last liberty. The windows, and the random first move among star points and tengen, are what the engine does.
Black first, captures, simple ko, no suicide. After two consecutive passes we use casual Chinese-area scoring and White receives 7.5 komi. Life-and-death and seki may differ from tournament rules.
The board UI loads first. The practice AI module loads in the background and shows as ready in the status line before it replies.
Yes. Create a room and share the invite link. You do not need the same browser — the link is enough.
Yes — baduk is the Korean name for Go, the ancient board game known as weiqi in Chinese and igo in Japanese. Two players place black and white stones to surround territory and capture stones. Korea has a strong professional baduk scene, which is why many players search for a baduk game online; on Playfulo the baduk game uses the same 19×19 Go rules.
One liberty means the group can be captured on the next turn. Connect to a friendly group to add liberties, or capture the attacking stone first if that stone is itself short of liberties. Filling your own last liberty is suicide and is not allowed. If neither side can capture the other, leave that shape and defend the larger territory elsewhere.