Handicaps beyond nine stones
Extra handicap stones can be added according to the diagrams below. I think this might be the Chinese pattern. (The Japanese pattern is given below). Most people who need such handicaps would probably prefer to play small board Go such as 9x9 and 13x13.
Table of contents | Table of diagrams Handicaps up to 17 Handicaps up to 25 Japanese Handicap stones Gene Fellner, stones 1-25 25 stones, another variation Handicaps up to 29 Gene Fellner, stones 1-41 41 stones |
up to 17
Handicap stones 10 through 17 are at R13, C7, N3, G17, N17, G3, C13, and R7.
PlatinumDragon: In my personal opinion, having the stones on the fourth line is stronger than the third line. I change my opinion after looking at the influence. I heard that 17 stones is enough for equal players to not let a single live group. Is there anyone who can explain it to me?
tapir: Living by 3-3 invasions doesn't look particularly difficult here.
up to 25
In fact a game Nemesis vs Janice Kim almost 20 years ago at this handicap is recalled.
Rich: Robert Jasiek's page shows the official Japanese rules for placement of handicap stones. They agree in large part with the diagram, although they don't have the 10-3 points.
Gene Fellner, USA, 1965:
10-13: G7,G13,N7,N13 14-17: C3,C16,R3,R16 18-25: D7,D13,G16,N16,Q7,Q13,G4,N4 26-29: K3,C10,K17,R10 30-33: F6,F14,O6,O14 34-41: C7,C13,G17,N17,R7,R13,G3,N3
[erratum?: K3, K17 instead of J3, J17?]
Crimson: I'm sure I saw that somewhere. Is it impractical, or why isn't it listed here?
agro1986: That configuration is used when Akari fought Hikaru in Hikaru no Go volume 6. Hikaru said "Use as many stones as you want" to Akari before the match.
Tas: How was the result?
C.S. Graves: Akari got trounced. Hikaru was, after all, an insei at the time.
up to 29
juste: Does this mean that a 30k can beat a 9d most of the time?
OneWeirdDude: As long as Black makes an effort to attack White, I don't see why not.
AxSqrd: But how would white make eyes when black so obviously has everything blocked out?
RolandIllig: The same as usual: try to separate the black stones, surround them and finally capture them to make eyes. If Black can defend appropriately, giving that many handicap stones wasn't correct, and Black can no longer be called a 30k.
Tapir: If one handicap stone is worth 13 points, than 41 * 13 = 533 with 533 >> 361. So black should not lose here. It maybe the range of go skill just isn't wide enough for 41 stones. No? Incidently you start as 20k at several places (EGF rating, IGS etc.) 20k to 7d range (EGF) gives 26 maximum handicap (26 * 13 = 338).