(;GM[1]FF[4]CA[UTF-8]AP[CGoban:2]ST[2] RU[Japanese]SZ[19]KM[0.00] PW[White]PB[Black]AW[ln][mn][nn][on][pn][qn][rn][sn][lo][lp][lq][lr][ls][ms]AB[mo][no][oo][po][qo][ro][so][mp][mq][mr]LB[ms:1]C[White 1 is huge and black should have not allowed it, if possible. However, now that it's done, minimize the damage.] (;B[or]CR[or] ;W[os]CR[os] (;B[ps]CR[ps] ;W[ns]LB[ms:1]CR[ns]C[RIGHT This minimizes the damage, but white got at least 6 points in sente (black still has to defend the Q2 cutting point, plus white can still push at O2, getting an extra point). This is why white 1 is so dangerous.]) (;B[pr]CR[pr] ;W[ps]CR[ps]) (;B[nr]CR[nr] ;W[ns]CR[ns]C[Black can't block at Q1 anymore.]) (;B[ns]CR[ns] ;W[nr]CR[nr] (;B[nq]CR[nq] ;W[ns]CR[ns]C[Black can't block at Q1 anymore.]) (;B[ps]CR[ps] ;W[ns]CR[ns] (;B[pr]CR[pr] ;W[nq]CR[nq]C[Too good for white.]) (;B[nq]CR[nq] ;W[pr]CR[pr]) (;B[pq]CR[pq] ;W[oq]CR[oq]C[Too good for white.]) (;B[qr]CR[qr] ;W[oq]CR[oq]C[Too good for white.]) (;B[oq]CR[oq] ;W[pr]CR[pr])) (;B[oq]CR[oq] ;W[pr]CR[pr]))) (;B[ns]CR[ns] ;W[nr]CR[nr] (;B[or]CR[or] ;W[os]CR[os] (;B[ps]CR[ps] ;W[pr]CR[pr]C[This hanami-ko is too good for white (the worst-case scenario is that the whole black corner dies, while white does not risk anything at all).]) (;B[nq]CR[nq] ;W[ns]CR[ns]C[Black can't block at Q1 anymore.]) (;B[oq]CR[oq] ;W[pr]CR[pr]) (;B[pr]CR[pr] ;W[ps]CR[ps]C[Too good for white.])) (;B[os]CR[os] ;W[or]CR[or]) (;B[nq]CR[nq] ;W[or]CR[or])) (;B[os]CR[os] ;W[or]CR[or] (;B[nr]CR[nr] ;W[ns]CR[ns]C[Too good for white.]) (;B[pr]CR[pr] ;W[nr]CR[nr]C[Too good for white (white reduced more than necessary and there's really bad aji at Q3).]) (;B[ps]CR[ps] ;W[pr]CR[pr]) (;B[ns]CR[ns] ;W[nr]CR[nr])) (;B[nr]CR[nr] ;W[ns]CR[ns]C[This helps nothing. It's the same situation, but losing 2 extra points.]) (;B[pr]CR[pr] ;W[os]CR[os]C[Interesting attempt, but this is not the best answer.]) (;B[ps]CR[ps] ;W[or]CR[or]C[Interesting attempt, but this is too good for white.]))