(;GM[1]FF[4]SZ[19]
GN[White to play and live by [oiotoshi\]]
PC[http://senseis.xmp.net/?GokyoShumyoSection5Problem17/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?GokyoShumyoSection5Problem17/Solution

White to play and live by [oiotoshi\]]
PL[W]

AB[ha][cb][db][fb][gb][ib][jb][dc][ec][kc][fd][id][kd][fe][he]
AW[ba][bb][hb][cc][fc][gc][hc][ic][jc][cd][dd][ed]

;W[ga]C[W1]MN[1]
;B[fa]C[B2]MN[2]
;W[da]C[W3]MN[3]
;B[eb]C[B4]MN[4]
;W[ca]C[W5]MN[5]
;B[lb]C[B6]MN[6]
;W[ea]C[W7]MN[7]

;
)
