(;GM[1]FF[4]SZ[19]
GN[Main line]
PC[http://senseis.xmp.net/?GokyoShumyoSection1Problem40/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?GokyoShumyoSection1Problem40/Solution

Main line]
PL[B]

AB[dq][gq][cr][dr][gr][hr][ir]
AW[co][ep][fp][gp][bq][cq][hq][iq][jq][br][jr]

;B[fs]C[B1]MN[1]
;W[cs]C[W2]MN[2]
;B[ds]C[B3]MN[3]

;
)
