(;GM[1]FF[4]SZ[19]
GN[solution?]
PC[http://senseis.xmp.net/?GokyoShumyoSection4Problem21/Attempts]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?GokyoShumyoSection4Problem21/Attempts

solution?]
PL[B]

AB[eb][fb][cc][dc][gc][cd][ce]
AW[cb][db][bc][ec][dd][ed][bf][df][cg]

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

;
)
