(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2] RU[Japanese]SZ[19]KM[6.50]TM[900]OT[1x12 byo-yomi] GN[Friendly Match]PW[patlee]PB[slashpine]WR[8k]BR[10k]DT[2019-12-27]PC[OGS: https://online-go.com/game/21073493]RE[W+52.50] ;B[pd] ;W[pp] ;B[dd] ;W[cp] ;B[jd] ;W[nd] ;B[dj] ;W[dh] ;B[jq] ;W[fd] ;B[df] ;W[fg] ;B[ff] ;W[gf] ;B[fe] ;W[ge] ;B[gd] ;W[gc] ;B[hd] ;W[ed] ;B[de] ;W[dc] ;B[cc] ;W[ec] (;B[hc]C[See variation.] ;W[cb] ;B[bc] ;W[gb] ;B[hb] ;W[fb] ;B[bb] ;W[db] ;B[qk]LB[gg:A]TR[ge][gf][fg][dh]C[There is a proverb which tells you to play urgent moves before big moves. Urgent refers to defending one of your weak groups, or attacking a weak group of your opponent. The triangled group is weak. You should attack it. One way to attack a group is to split it into two parts, for instance by cutting at A.] ;W[pe] (;B[od]C[See variation.] ;W[oe] ;B[ne] ;W[nc]TR[od][pd]C[The two stones are already hane'd on their head. They need liberties! You on't need to defend O15 immediately, this stone cannot be captured yet.] (;B[me]C[See variation.] ;W[qd] ;B[pc] ;W[qc] ;B[pb] ;W[qb] ;B[nb] ;W[ob] ;B[mc] ;W[pa] ;B[md] ;W[oc] ;B[qh]TR[ge][gf][fg][dh]C[Small. Again, you should have attacked the triangled group.] ;W[gh] ;B[cm] ;W[cj] (;B[ci]C[Are you trying yo kill the white stone? This doesn't work. See variation.] ;W[di] ;B[ck] ;W[bj] ;B[bi] ;W[bk] ;B[bl] ;W[dk] ;B[aj] ;W[cl] ;B[ak] ;W[ej] ;B[bm] ;W[dm] ;B[co]C[What does this move achieve? You are only strengthening White's corner while making 2-3 points.] ;W[dp] ;B[bp] ;W[bq] ;B[bo] ;W[do] ;B[cg]C[This is almost game over now. Black took gote to secure a small amount of points, while White got a very strong center as well as the lower left corner. *** end of comments ***] ;W[hq] ;B[mq] ;W[oq] ;B[qn] ;W[qo] ;B[pn] ;W[qq] ;B[fq] ;W[gp] ;B[fp] ;W[fo] ;B[gq] ;W[hp] ;B[hr] ;W[ir] ;B[gr] ;W[iq] ;B[dr] ;W[cq] ;B[cr] ;W[cn] ;B[bn] ;W[dn] ;B[fs] ;W[jp] ;B[kq] ;W[rn] ;B[rm] ;W[ro] ;B[lo] ;W[in] ;B[jj] ;W[hj] ;B[mj] ;W[oh] ;B[oj] ;W[nf] ;B[mf] ;W[ng] ;B[mg] ;W[pi] ;B[qj] ;W[qi] ;B[ri] ;W[pj] ;B[pk] ;W[oi] ;B[nj] ;W[qg] ;B[rg] ;W[ph] ;B[rh] ;W[qf] ;B[jm] ;W[hl] ;B[ig] ;W[kn] ;B[mm] ;W[ln] ;B[mn] ;W[kl] ;B[km] ;W[lm] ;B[ll] ;W[jl] ;B[jn] ;W[ko] ;B[kp] ;W[jo] ;B[io] ;W[im] ;B[mo] ;W[lk] ;B[ml] ;W[kj] ;B[ki] ;W[ji] ;B[jh] ;W[ii] ;B[lj] ;W[kk] ;B[lh] ;W[mb] ;B[lb] ;W[na] ;B[ep] ;W[eo] ;B[dq] ;W[ap] ;B[jr] ;W[al] ;B[am] ;W[ao] ;B[ai] ;W[ch] ;B[bg] ;W[bh] ;B[ah] ;W[ba] ;B[ab] ;W[hs] ;B[er] ;W[nr] ;B[mr] ;W[ms] ;B[nq] ;W[ns] ;B[ls] ;W[or] ;B[oo] ;W[op] ;B[np] ;W[rf] ;B[sf] ;W[sg] ;B[se] ;W[sd] ;B[sh] ;W[re] ;B[rj] ;W[sg] ;B[sf] ;W[la] ;B[kb] ;W[ia] ;B[ib] ;W[ka] ;B[ha] ;W[ja] ;B[jb] ;W[ma] ;B[ga] ;W[fa] ;B[hf] ;W[ee] ;B[ef] ;W[he] ;B[ie] ;W[gg] ;B[be] ;W[hg] ;B[if] ;W[ih] ;B[mi] ;W[sm] ;B[sl] ;W[rl] ;B[sn] ;W[qm] ;B[sm] ;W[sk] ;B[pm] ;W[ql] ;B[pl] ;W[so] ;B[sj] ;W[rk] ;B[eg] ;W[eh] ;B[js] ;W[is] ;B[br] ;W[ar] ;B[bs] ;W[se] ;B[sg] ;W[ni] ;B[al] ;W[ca] ;B[gs] ;W[aq] ;B[dg] ;W[an] ;B[ag] ;W[aa] ;B[mk] ;W[po] ;B[mh] ;W[nh] ;B[] ;W[]C[patlee: ty ]) (;B[ck] ;W[ci] ;B[dk]C[You probably can't kill the white group, but you can try to surround it: build strength while attacking, it will payoff 30-40 moves later.])) (;B[qd])) (;B[qe]C[This is safer because it defends the corner.] (;W[oe] ;B[qf]) (;W[pf] ;B[od] ;W[ne]))) (;B[cb]C[You should remember this kind of shape. You get a big corner, and you remove the base of your opponent.]))