(;GM[1]FF[4]SZ[19]
GN[(W10 at B7)]
PC[http://senseis.xmp.net/?GokyoShumyoSection5Problem20/Solution]AP[GoWiki:2009]
DT[2014-01-29]
C[Diagram from http://senseis.xmp.net/?GokyoShumyoSection5Problem20/Solution

(W10 at B7)]
PL[B]

AB[gb][jb][bc][dc][ec][fc][gc][hc][ic][jc][ed][be][ce][de]
AW[ba][da][ea][ga][ja][bb][db][eb][fb][hb][ib][kb][cc][kc][cd][dd][jd][kd][ee][fe][he]

;B[cb]C[B7]MN[7]
;W[ca]C[W8]MN[8]
;B[bd]C[B9]MN[9]
;W[cb]C[W10]MN[10]
;B[ab]C[B11]MN[11]

;
)
