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19×19 Go (Igo, Baduk, Weiqi) game.

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

Rank differenceHandicap
0Komi 6.5
1Komi 0
2Reverse komi 13
3Reverse komi 26
4Reverse komi 39
5Reverse komi 52
6Reverse komi 65
7Reverse komi 78
8Reverse komi 91
9Reverse komi 104
10Reverse komi 117
11Reverse komi 130
12Reverse komi 143
13Reverse komi 156
14Reverse komi 169
15Reverse komi 182
16Reverse komi 195
17Reverse komi 208
18Reverse komi 221
19Reverse komi 234
20Reverse komi 247
21Reverse komi 260
22Reverse komi 273
23Reverse komi 286
24Reverse komi 299
25Reverse komi 312
26Reverse komi 325
27Reverse komi 338
28Reverse komi 351
29Reverse komi 360.5

3. An illegal point: foul defeat (9D-18K), warning dialog (19K-30K).
4. The match is stopped by both passes. If the automatic designation of dead stones is wrong, please correct by clicking. If there is a seki, please change enabled territories (■or□) into disabled territories (×or+) by clicking.
5. Players can rank up by points; 20 (8D-5D), 10 (4D-1D), 7 (1K-9K), 5 (10K-18K), 2 (19K-25K), 1 (26K-30K).
6. If the user data is not saved, it is necessary to set the DOM storage effective.

【For inexperienced persons】
This game competes for the number of territories (intersections).



BlackTerritories: BlackIntersections-BlackDeadStones=36-0=36
WhiteTerritories: WhiteIntersections-WhiteDeadStones=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. Black and White cannot move to "・". Because their stones will be taken. This state is called "seki".



5. Stones which have two eyes are alive and are not taken.



6. After the match stopped, stones which cannot make two eyes are taken as dead stones.



【Information】
Online Labo
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