(;GM[1]FF[4]SZ[19]
GN[First variation. B6 @ W3; Black can chose to play ko by not connecting at B6. W9 is the tesuji]
PC[http://senseis.xmp.net/?XuanxuanQijingProblem103/Solution]AP[GoWiki:2009]
DT[2013-04-01]
C[Diagram from http://senseis.xmp.net/?XuanxuanQijingProblem103/Solution

First variation. B6 @ W3; Black can chose to play ko by not connecting at B6. W9 is the tesuji]
PL[W]

AB[ck][ek][cl][el][bm][cn][fn][gn][bo][gp][cq][fq][cr][fr][ds]
AW[bi][cj][bk][bl][cm][dm][dn][do][ho][dp][hp][dq][hq][dr]

;W[bp]C[W1]MN[1]
;B[cp]C[B2]MN[2]
;W[bn]C[W3]MN[3]
;B[an]C[B4]MN[4]
;W[co]C[W5]MN[5]
;W[bq]C[W7]MN[7]
;B[br]C[B8]MN[8]
;W[ap]C[W9]MN[9]

;
)
