(;GM[1]FF[4]SZ[19]
GN[27 stones, invasions possible?]
PC[http://senseis.xmp.net/?EntireBoardTerritoryProblem]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?EntireBoardTerritoryProblem

27 stones, invasions possible?]
PL[B]

AB[cc][gc][mc][qc][dd][jd][pd][cg][hg][lg][qg][dj][gj][jj][mj][pj][cm][hm][lm][qm][dp][jp][pp][cq][gq][mq][qq]


;
)
