(;GM[1]FF[4]SZ[19]
GN[white is trapped]
PC[http://senseis.xmp.net/?GokyoShumyoSection3Problem40/Attempts]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?GokyoShumyoSection3Problem40/Attempts

white is trapped]
PL[B]

AB[da][cb][dc][gc][kc][lc][mc][dd][ed][fd][gd][jd]
AW[fa][db][eb][gb][ec][fc][ic]

;B[ha]C[B1]MN[1]
;W[ia]C[W2]MN[2]
;B[ib]C[B3]MN[3]
;W[jb]C[W4]MN[4]
;B[ja]C[B5]MN[5]
;W[jc]C[W6]MN[6]
;B[kb]C[B7]MN[7]
;W[id]C[W8]MN[8]
;B[ie]C[B9]MN[9]
;W[je]C[W10]MN[10]

;
)
