【Overview】
An online browser game of Go (aka Igo, Baduk, Weiqi). Board size 9x9. Player vs player or computer, watching games. Japanese Go rule. Free & No membership registration. PC & Smartphone.

【How to play】
1. This game is based on the Japanese Go rule. (Text for inexperienced persons)
2. The default handicap (komi) is 6.5: Black gives to White in an even game.

Rank difference	Handicap
0	Komi 6.5
1	Komi 3.5
2	Komi 0.5
3	Reverse komi 2.5
4	Reverse komi 5.5
5	Reverse komi 8.5
6	Reverse komi 11.5
7	Reverse komi 14.5
8	Reverse komi 17.5
9	Reverse komi 20.5
10	Reverse komi 23.5
11	Reverse komi 26.5
12	Reverse komi 29.5
13	Reverse komi 32.5
14	Reverse komi 35.5
15	Reverse komi 38.5
16	Reverse komi 41.5
17	Reverse komi 44.5
18	Reverse komi 47.5
19	Reverse komi 50.5
20	Reverse komi 53.5
21	Reverse komi 56.5
22	Reverse komi 59.5
23	Reverse komi 62.5
24	Reverse komi 65.5
25	Reverse komi 68.5
26	Reverse komi 71.5
27	Reverse komi 74.5
28	Reverse komi 77.5
29	Reverse komi 80.5
∞	Reverse komi 80.5

3. The time limit is 2 minutes and 30 seconds (that can be changed). It is not counted within 5 seconds. (Simple delay system)
4. An illegal point: foul defeat (9D-18K), warning dialog (19K-30K).
5. The match is stopped by both passes. If there are stones that can be taken in seki, please take them beforehand. "■" "□" are enabled territories, "×" "＋" are disabled territories. If you have changed a match preference from "Auto agree" to "Manual agree", you can correct the result of automatic judgment. Please correct by clicking (or tapping) stones or territories on the board.
6. At rank match, players can rank up by points; 200 (8D-5D), 100 (4D-1D), 70 (1K-9K), 50 (10K-18K), 20 (19K-25K), 10 (26K-30K).

Rank difference	Handicap game	Even game
		Higher win	Lower win
0	±10	±10	±10
1	±10	±5	±15
2	±10	±1	±19
∞	±10	±1	±19

7. Abbreviations used in the game.

Abbreviation	Meaning
RH	Rank match and Handicap game
RE	Rank match and Even game
FH	Free match and Handicap game
FE	Free match and Even game
RK	Reverse Komi

8. Please see also the Q&A.

【For inexperienced persons】
This game competes for the number of territories (intersections). Black gives handicap (komi) 6.5 to White in an even game.



BlackTerritories: BlackIntersections－TakenBlackStones＝36－0＝36
WhiteTerritories: WhiteIntersections－TakenWhiteStones＝27－0＝27
SurfaceOfBoard: BlackTerritories－WhiteTerritories＝36－27＝9 (●Lead)
Result: SurfaceOfBoard－Handicap＝9－6.5＝2.5 (●Win)

1. You can take opponent's stones by surrounding.



2. You cannot move to the place which becomes same shape repetition. Once it is necessary to move to other places. This state is called "ko".



3. If you cannot take opponent's stones, you cannot move to the place where your stones are taken.



4. Stones which have two eyes are not taken.



5. Black and White cannot move to "・". Because even if you want to take opponent's stones, your stones are taken first. This state is called "seki".



6. If you have filled in all places that do not become a territory such as "・", please pass. The judgment of territories is started by both passes.



7. After the judgment of territories started, stones which cannot make two eyes are removed as taken stones.



【Version】


【Information】
SAKURA-ENT.NET
The terms of use, privacy policy, Q&A, system requirements and contact information are here.