(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]
RU[Japanese]SZ[19]KM[0.00]
AW[bo][bp][cq][dq][br][dr]AB[cp][dp][aq][bq][eq][er][es]C[If Black simply ataris at the bottom, White will connect and win the capturing race.]
(;B[ds]
;W[cr]
(;B[cs]C[For instance ..]
;W[ar]
;B[bs]
;W[ap])
(;B[ar]C[White has to be careful.]
;W[ap]
;B[bs]
;W[as]
;B[ar]))
(;B[cr]C[This is the solution, reducing White's liberties and setting up a squeeze.]
;W[cs]
;B[ds]
;W[cr]
;B[ar]
;W[ap]
;B[bs]))
