(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]
RU[Japanese]SZ[19]KM[0.00]
PB[Black to play]AW[rl][qm][rn][po][ro][pp][qp][nq][oq][mr][or][ms][ns]AB[om][pn][qn][oo][qo][np][op][rp][lq][mq][lr][ls]C[The white group looks like it has weaknesses - the question is where to start?]
(;B[pq]
;W[qq]
;B[qr]
;W[pr]
;B[rq]
;W[pq]
;B[ps]
;W[rr]
;B[rs]
;W[sr]C[White is okay this way.])
(;B[rq]
;W[qr]C[This patches all white's problems.])
(;B[ps]C[Oddly this is the best move.]
(;W[os]C[This makes an eye but leaves problems.]
;B[pq]
;W[qq]
;B[pr])
(;W[qr]C[This does not help white.]
;B[os]
(;W[nr]
;B[pr])
(;W[pr]C[White must give up three stones by playing here.]
;B[nr]
;W[rq]))
(;W[pq]C[Nor does this.]
;B[os]
;W[nr]
;B[qq])
(;W[pr]C[This is the strongest defence.]
;B[qr]
;W[rq]C[It looks like white has solved his problems with this....]
;B[qs]C[... but black calmly connects and white is trouble again.]
(;W[qq]
;B[os])
(;W[pq]
;B[os])
(;W[os]
;B[qq]
;W[sp]
;B[pq]))))
