(;GM[1]FF[3]
RU[Japanese]SZ[19]HA[0]KM[5.5]
PW[White]
PB[Black]
GN[White (W) vs. Black (B)]
DT[2001-07-18]
SY[Cgoban 1.9.5]TM[-];
AW[ca][ea][fa][ga][ha][ia][ka][cb][gb][ib][jb][lb][pb][qb][cc][jc][kc][lc][mc][qc][dd][kd][ld][qd][rd][pe][re][df][dg][dh][fh][ri][dj][rj][gk][cl][il][pl][ql][mm][nm][om][qm][mn][nn][rn][no][oo][ro][dp][ip][jp][np][rp][sp][fq][nq][oq][pq][sq][pr][ps][rs]
AB[da][la][ma][db][eb][hb][mb][ob][dc][ec][fc][gc][hc][ic][nc][pc][fd][id][jd][md][nd][pd][ke][le][oe][qe][ff][jf][qf][rf][eg][qg][gh][gi][qi][ij][pj][kk][ok][ml][nl][ol][lm][pm][cn][ln][on][pn][lo][po][kp][op][pp][qp][jq][lq][qq][rq][hr][mr][nr][qr][sr][os][qs]
TR[os]LB[lc:A]
C[White has foolishly ignored the marked ko threat in favor of saving her group
up top. Make some noise black.
]
(;B[cp];W[cq];B[do];W[ep];B[bq];W[bp];B[bo];W[co]
(;B[or]
C[RIGHTNow the capture race means something and black will probably end up either winning, or with a settled strong group in the lower left.
])
(;B[mq]
C[RIGHTNow the capture race means something and black will probably end up either winning, or with a settled strong group in the lower left.
])
(;B[mp]
C[RIGHTNow the capture race means something and black will probably end up either winning, or with a settled strong group in the lower left.
])
(;B[mo]
C[RIGHTNow the capture race means something and black will probably end up either winning, or with a settled strong group in the lower left.
])
)
(;B[or]LB[qn:A][qo:B]
C[White can still pull ahead in the capturing race by playing at a or b.
])
(;B[mq]LB[qn:A][qo:B]
C[White can still pull ahead in the capturing race by playing at a or b.
])
(;B[mp]LB[qn:A][qo:B]
C[White can still pull ahead in the capturing race by playing at a or b.
])
(;B[mo]LB[qn:A][qo:B]
C[White can still pull ahead in the capturing race by playing at a or b.
])
(;B[cq];W[cp]TR[cn]
C[Playing the 3-3 invasion will get you sealed in, and the marked stone will be
left stranded. It also does not take advantage of the ko threat that was played
at a. You can do better.
]
LB[os:A])
)