(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]
RU[Japanese]SZ[19]KM[0.00]
PB[Black to play and damage White's area]AW[ko][kp][mp][np][op][jq][lq][pq][pr][qr]AB[lo][mo][no][oo][lp][pp][qp][qq][rr][rs]
(;B[oq]C[Playing one of the cuts may be tempting but White has too many liberties. Also pushing along the edge is too small.]
;W[or])
(;B[nr]C[This is the weak spot in White's shape.]
(;W[or]
(;B[mq]C[This threatens the snap-back.]
(;W[oq]
;B[os]
;W[ps]
;B[ns]
;W[mr]
;B[qs]C[White is short on liberties and gets captured.]
;W[nq]
;B[mq])
(;W[mr]C[But white can play here and it is not a snap-back.]
;B[nq]
;W[oq]))
(;B[os]C[So Black has to play here to reduce White's liberties.]
(;W[ps]C[If White here...]
;B[mq]C[.. then this does threaten the snap-back and now White is short of liberties.]
(;W[mr]
;B[nq])
(;W[oq]
;B[nq]))
(;W[mq]C[If white connects here Black escapes.]
;B[qs])))
(;W[oq]C[White's strongest answer is connecting.]
;B[ps]C[However Black plays here and it is too dangerous for White to cut this stone off.]
(;W[mr]
;B[qs]C[White rescues the stones but loses the area.])
(;W[qs]
;B[mq]
;W[mr]
;B[nq]
;W[os]
;B[lr]C[White loses even more.]))))
