(;GM[1]FF[4]SZ[19]
GN[Take 4th corner?]
PC[http://senseis.xmp.net/?DoublePurposePlays]AP[GoWiki:2009]
DT[2014-03-16]
C[Diagram from http://senseis.xmp.net/?DoublePurposePlays

Take 4th corner?]
PL[B]

AB[gc][nc][dd][kd][dj][jj][cp][dp][dr]
AW[pb][pd][pf][cn][en][gn][in][gq]
LB[ce:a][fj:b][qj:d][nn:c]

;B[pp]C[B1]MN[1]
;W[np]C[W2]MN[2]
;B[pn]C[B3]MN[3]

;LB[ce:a][fj:b][qj:d][nn:c]
)
