(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]
RU[Japanese]SZ[19]KM[0.00]
PB[Black to play]C[Just play through the moves to move 18 which is the problem position. These do not represent a game sequence!]
;B[bq]
;W[bp]
;B[cp]
;W[bo]
;B[co]
;W[cn]
;B[dp]
;W[do]
;B[cr]
;W[dq]
;B[ap]
;W[bn]
;B[]
;W[eo]
;B[]
;W[fq]
;B[]
;W[hq]C[This is the problem position. Black to play.])
