(;GM[1]FF[4]SZ[19]
GN[Black to live]
PC[https://senseis.xmp.net/?GokyoShumyoSection1Problem40/Solution]AP[GoWiki:2009]
DT[2023-01-14]
C[Diagram from https://senseis.xmp.net/?GokyoShumyoSection1Problem40/Solution

Black to live]
PL[B]

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

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

;CR[es][gs]
)
