(;GM[1]FF[4]SZ[19]
GN[variation]
PC[http://senseis.xmp.net/?GokyoShumyoSection5Problem13/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?GokyoShumyoSection5Problem13/Solution

variation]
PL[W]

AB[ia][eb][hb][jb][ec][gc][hc][jc][cd][fd][gd][jd][ie][df][if][jf][fg][hg]
AW[ib][fc][ic][kc][ed][hd][id][kd][ee][fe][ge][he][je][ke]

;W[ga]C[W1]MN[1]
;B[gb]C[B2]MN[2]
;W[kb]C[W3]MN[3]
;B[ja]C[B4]MN[4]
;W[ka]C[W5]MN[5]

;
)
