(;GM[1]FF[4]SZ[19]
GN[White 1 seems produce overconcentration.]
PC[http://senseis.xmp.net/?OverconcentratedShape/Discussion]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?OverconcentratedShape/Discussion

White 1 seems produce overconcentration.]
PL[W]

AB[nd][pd][pe][qe][pf][on][pn][po][qo][pp][nq][qq]
AW[of][qf][pg][qg][pm][rm][qn][ro][qp][rp]
LB[mg:a][om:b]

;W[pj]C[W1]MN[1]

;LB[mg:a][om:b]
)
