(;GM[1]FF[4]SZ[19]
GN[Main line]
PC[http://senseis.xmp.net/?GokyoShumyoSection1Problem90/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?GokyoShumyoSection1Problem90/Solution

Main line]
PL[W]

AB[go][io][cp][ep][gp][ip][kp][dq][cr][ir][kr]
AW[fq][gq][hq][lq][dr][er][hr][lr]

;W[hs]C[W1]MN[1]
;B[ds]C[B2]MN[2]
;W[jr]C[W3]MN[3]
;B[jq]C[B4]MN[4]
;W[js]C[W5]MN[5]

;
)
