(;GM[1]FF[4]SZ[19]
GN[]
PC[http://senseis.xmp.net/?GokyoShumyoSection3Problem31/Attempts]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?GokyoShumyoSection3Problem31/Attempts

]
PL[B]

AB[bb][jb][ac][ec][kc][bd][ed][fd][hd][jd][ce][de][he][ke][bf]
AW[cb][db][eb][gb][bc][cc][fc][gc][ic][cd]

;B[ca]C[B1]MN[1]
;W[da]C[W2]MN[2]
;B[fa]C[B3]MN[3]
;W[ab]C[W4]MN[4]
;B[aa]C[B5]MN[5]
;W[ba]C[W6]MN[6]

;
)
