(;GM[1]FF[4]SZ[19]
GN[Diagram 21.1: Black to play]
PC[http://www.go4go.net/]
AP[GoWiki:2009]
DT[2023-12-04]
C[Diagram from http://www.go4go.net/

Diagram 21.1: Black to play]
PL[B]

AB[qo][qp][pq][pr]
AW[ql][pn][qn][rn][op][pp][lq][oq][or]
SQ[pp]
MA[rn]


;SQ[pp]
MA[rn]
)
