(;GM[1]FF[4]SZ[19]
GN[Main line]
PC[http://senseis.xmp.net/?GokyoShumyoSection1Problem2/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?GokyoShumyoSection1Problem2/Solution

Main line]
PL[B]

AB[bp][cp][bq][cr]
AW[bo][co][dp][cq][dq][fq]
LB[ap:a][bs:b]

;B[ar]C[B1]MN[1]

;LB[ap:a][bs:b]
)
