(;GM[1]FF[4]SZ[19]
GN[S7 does it efficiently while solidifying against approaches on the side]
PC[http://senseis.xmp.net/?WuRenGo2/White]AP[GoWiki:2009]
DT[2009-11-03]
C[Diagram from http://senseis.xmp.net/?WuRenGo2/White

S7 does it efficiently while solidifying against approaches on the side]
PL[B]

AB[on][po][pp][pq]
AW[rm][qn][qp][qq]
CR[rm]
LB[rn:a]

;B[qo]C[B1]MN[1]
;W[ro]C[W2]MN[2]

;CR[rm]
LB[rn:a]
)
