(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]
RU[Japanese]SZ[19]KM[0.00]
PW[]PB[Black to Play]C[Just play through the moves to move 16 which is the problem
position. These do not represent a game sequence!]
;B[bp]
;W[bq]
;B[cp]
;W[cq]
;B[dp]
;W[dr]
;B[dq]
;W[cs]
;B[er]
;W[ap]
;B[bn]
;W[ar]
;B[fq]
;W[]
;B[fs]
;W[]C[This is the problem position. Black to play.]
)