(;GM[1]FF[4]SZ[19]
GN[Last defense?]
PC[http://senseis.xmp.net/?XuanxuanQijingProblem20/Attempts]AP[GoWiki:2009]
DT[2013-04-01]
C[Diagram from http://senseis.xmp.net/?XuanxuanQijingProblem20/Attempts

Last defense?]
PL[B]

AB[hp][ip][fq][gq][jq][kq][lr]
AW[ep][fp][gp][eq][hq][iq][jr]
LB[fs:a]

;B[gr]C[B1]MN[1]
;W[ir]C[W2]MN[2]
;B[hs]C[B3]MN[3]
;W[is]C[W4]MN[4]
;B[er]C[B5]MN[5]
;W[dr]C[W6]MN[6]
;B[hr]C[B7]MN[7]

;LB[fs:a]
)
