(;GM[1]FF[4]SZ[19]
GN[continuation]
PC[http://senseis.xmp.net/?GokyoShumyoSection4Problem12/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?GokyoShumyoSection4Problem12/Solution

continuation]
PL[B]

AB[aa][ba][ca][ab][cb][fb][bc][gc][bd][cd][dd][fd][ee][df][ef]
AW[db][cc][dc][ec][ad][ed][ae][be][ce][de][cg]

;B[da]C[B1]MN[1]
;W[ac]C[W2]MN[2]
;B[eb]C[B3]MN[3]
;W[bb]C[W4]MN[4]

;
)
