(;GM[1]FF[4]SZ[19]
GN[White 4 necessary]
PC[http://senseis.xmp.net/?GokyoShumyoSection1Problem97/Attempts]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?GokyoShumyoSection1Problem97/Attempts

White 4 necessary]
PL[W]

AB[ma][mb][kc][lc][kd][md][nd][pd][jf][lf][mf]
AW[nb][hc][jc][mc][nc][qc][jd][qd][je][qe][kf][nf][pf][kg][ng][mh]

;W[kb]C[W1]MN[1]
;B[lb]C[B2]MN[2]
;W[jb]C[W3]MN[3]
;B[pc]C[B4]MN[4]
;W[pb]C[W5]MN[5]
;B[ob]C[B6]MN[6]
;W[oc]C[W7]MN[7]
;B[od]C[B8]MN[8]
;W[oa]C[W9]MN[9]
;B[na]C[B10]MN[10]

;
)
