(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]
RU[Japanese]SZ[19]KM[0.00]
PB[Black to play]
AB[pr][rq][sp][oq][op][np][no][nn][on][pn][po][pm][qm][ql][rl][sl]
AW[qr][pq][or][nr][nq][mp][mo][mn][mm][pp][qo][qn][ro][rm][sm][sn][ol][pk][qk][rk][sk][rp]
C[This is the problem position. Black to play.]
(;B[qq]C[So where should black add a stone on the inside?]
;W[qp]
;B[sq]
;W[rr]
;B[so]
;W[sr]C[Black easily gets captured. ])
(;B[qp]
;W[qq]
;B[sq]
;W[rr]C[The throw in didn't help.])
(;B[rr]
;W[qq]
;B[sq]
;W[rs]C[Nor does this move.])
(;B[so]
;W[sq]
;B[sp]
;W[qq]C[This sequence is clearly doomed.])
(;B[sq]C[Connecting must be the answer as it threatens the
atari on the 3 white stones.]
(;W[qp]
;B[so]C[Connecting the 2 and 4 stones is not fast enough.]
(;W[rn]
;B[qq])
(;W[qq]
;B[rn]
;W[sn]
;B[sm]C[Two eyes]))
(;W[so]C[This makes an eye for white which is usually good.]
;B[qq]C[However black plays here.]
(;W[qp]
;B[rn]C[White cannot connect.])
(;W[ps]
;B[qp]
;W[pr]
;B[rn]C[Nor does taking the one stone work.]))
(;W[qq]
;B[so]
;W[qp]
;B[rn]C[This fails for white also.])))
