(;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 20 which is the problem position. These do not represent a game sequence!]
;B[sr]
;W[rr]
;B[rq]
;W[qr]
;B[qq]
;W[pr]
;B[or]
;W[pq]
;B[oq]
;W[op]
;B[pp]
;W[oo]
;B[qp]
;W[po]
;B[qo]
;W[qn]
;B[np]
;W[ro]
;B[mq]
;W[pm]C[This is the problem position. Black to play.]
)
