(;GM[1]FF[4]CA[UTF-8]AP[CGoban:2]ST[2]
RU[Japanese]SZ[19]KM[0.00]
PW[Xavier]PB[Nicolas]
;B[dp]
;W[qd]
;B[dc]
;W[pq]
;B[oc]
;W[pe]
;B[ld]
;W[ce]
;B[cg]
;W[ed]
(;B[fc]C[wrong choice.
sv]
;W[ec]
;B[eb]
(;W[db]C[not bad, sv]
;B[cb]
(;W[fb]C[overplay. sv]
;B[da]
;W[gc]
;B[dd]
;W[fd]
;B[de]C[good for b. ]
(;W[fq]C[sv]
(;B[dn]C[sv]
;W[jp]
;B[qk]
;W[pc]
;B[od]
;W[qm]
;B[qg]
(;W[om]C[sv]
(;B[pi]C[sv]
;W[pb]
;B[oe]
(;W[of]C[don't cut two living groups. sv]
;B[pf]
;W[nf]
;B[jc]C[this is no good for white. the cutting stones  are becoming a weak group. b is alive both sides, so useless to cut.]
;W[ni]C[good move.]
(;B[ok]C[sv]
;W[nk]C[very good. stop the river!]
;B[nl]
;W[ol]
;B[nj]
;W[mk]
;B[oj]
;W[mj]C[yes!]
;B[mi]
(;W[nh]C[heavy. sv]
;B[li]
;W[kf]
;B[lg]
;W[pg]C[this hurts the corner.]
;B[qf]
;W[ph]
;B[qh]
;W[lf]
;B[jh]
;W[if]
(;B[mp]C[sv]
;W[mm]
;B[oq]
;W[pp]C[good.]
;B[pr]
;W[qr]
;B[nr]
;W[ps]
;B[kq]
;W[jq]
;B[kr]
;W[or]
;B[hq]
(;W[hp]C[sv]
;B[jr]
;W[gp]
;B[dq]
;W[hh]C[good move.]
;B[ll]
;W[ml]
;B[ij]
;W[gj]C[yes!]
;B[il]
(;W[ci]C[sv]
(;B[ck]C[sv]
;W[cf]
;B[df]
;W[bg]
;B[cd]
;W[dg]
;B[eg]
;W[ch]C[p18 is very important for both w and b. ])
(;B[gm]CR[gm]
;W[]
;B[iq]CR[iq]
;W[ip]CR[ip]
;B[ko]CR[ko]))
(;W[gl]CR[gl]C[the vital point. how should black live?]
;B[kn]CR[kn]
;W[lo]CR[lo]
;B[in]CR[in]
;W[gn]CR[gn]
;B[lk]CR[lk]
;W[ir]CR[ir]C[black suffers.]))
(;W[jr]CR[jr]C[F3 is light, the corner is still open. now b has to take care of his group. how to live is a good question.]))
(;B[ob]CR[ob]C[sente. ]
;W[]
;B[re]CR[re]
;W[rd]CR[rd]
;B[rb]CR[rb]TR[pd]C[dead. when the shouder is open, the corner is dead.]))
(;W[le]CR[le]
;B[md]CR[md]
;W[li]CR[li]
;B[mh]CR[mh]
;W[lh]CR[lh]
;B[mg]CR[mg]
;W[lg]CR[lg]
;B[mf]CR[mf]
;W[me]CR[me]
;B[ne]CR[ne]
;W[lf]CR[lf]
;B[og]CR[og]
;W[kj]CR[kj]C[white is very efficient. ]))
(;B[nj]CR[nj]C[must get out.]
(;W[mj]CR[mj]
;B[nk]CR[nk]
;W[oi]CR[oi]
;B[pj]CR[pj])
(;W[mi]CR[mi]
;B[oi]CR[oi])))
(;W[jc]CR[jc]C[more important here, this move give a lot of points and eye shape.]))
(;B[pd]CR[pd]
;W[qc]CR[qc]
;B[qe]CR[qe]C[:-(]))
(;W[pb]CR[pb]C[the shape. necessary to defend here. ]))
(;B[ic]CR[ic]C[vital point. white is not even alive. ]))
(;W[jc]CR[jc]C[vital point. ]))
(;W[dd]CR[dd]C[the shape.]
;B[da]CR[da]
;W[cc]CR[cc]
;B[fd]CR[fd]
;W[db]CR[db]
;B[ff]CR[ff]
;W[bb]CR[bb]
;B[dc]CR[dc]C[less good than the other variation.]))
(;W[dd]CR[dd]C[the shape.]
;B[cb]CR[cb]
;W[cc]CR[cc]
;B[db]CR[db]
;W[gd]CR[gd]
;B[gc]CR[gc]
;W[hd]CR[hd]))
(;B[dd]CR[dd]
;W[de]CR[de]
;B[ee]CR[ee]
;W[ef]CR[ef]
;B[fe]CR[fe]
;W[dg]CR[dg]
;B[fd]CR[fd]
;W[ch]CR[ch]C[this joseki would be better for black.]
;B[id]CR[id]C[big territory.]))
