(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]RU[Japanese]SZ[19]KM[6.50]TM[60]GN[Enamano-dividesby0(B) IGS]PW[Enamano]PB[dividesby0]WR[8k]BR[8k]DT[2018-11-26]CP[  Copyright (c) PANDANET Inc. 2018  Permission to reproduce this game is given, provided proper credit is given.  No warrantee, implied or explicit, is understood.  Use of this game is an understanding and agreement of this notice.]EV[Internet Go Server game: Enamano vs dividesby0]PC[IGS:  igs.joyjoy.net 6969]US[Brought to you by IGS PANDANET]C[ dividesby0 8k+: Hi!]RE[W+9.50]LT[]NB[21]NW[21]RR[Normal];B[pd]BL[57];W[pp]WL[57];B[cd]BL[54];W[dp]WL[54];B[ic]BL[50];W[cj]WL[50];B[qn]BL[45];W[mq]WL[48];B[rp]BL[42];W[qq]WL[47](;B[pj]BL[37]C[Q10 is playable, if S4-R3 exchange is not played. White got nice invasion here](;W[nc]WL[43](;B[oc]BL[34];W[nd]WL[41];B[qf]BL[30];W[pe]WL[40];B[qe]BL[28];W[oe]WL[39];B[og]BL[600];W[ie]WL[23](;B[gd]BL[580];W[jc]WL[21];B[jb]BL[575];W[kc]WL[17];B[id]BL[568];W[jd]WL[12];B[he]BL[564];W[kb]WL[10];B[je]BL[559];W[if]WL[9];B[jf]BL[555];W[ib]WL[597];B[hb]BL[553];W[ja]WL[596];B[gc]BL[545];W[ig]WL[593];B[jg]BL[541];W[ff]WL[590](;B[ih]BL[530];W[gf]WL[586];B[hf]BL[527];W[hg]WL[584];B[gg]BL[525];W[hh]WL[580];B[gh]BL[523];W[hi]WL[579];B[gi]BL[519];W[ii]WL[575];B[dh]BL[515];W[gj]WL[570];B[ei]BL[510];W[hd]WL[567]C[After connecting and squeezing black got unpleasant position. Maybe you could sacrifice these two stones?](;B[hc]BL[504];W[ge]WL[564];B[hd]BL[502];W[fd]WL[563];B[fc]BL[500];W[ed]WL[562](;B[ec]BL[498];W[dd]WL[561];B[dc]BL[496];W[ce]WL[560](;B[cc]BL[483]C[C17 is probably a wasted move. Now white lives. You took less than a second before connecting. This is blacks area. White is weak. In such situations spend some time to convince yourself, that you REALLY need passive defensive move. ];W[df]WL[557];B[ee]BL[480]C[Here are some fancy variations.](;W[cg]WL[548];B[ef]BL[473];W[eg]WL[536];B[fg]BL[598];W[ch]WL[516];B[ci]BL[592];W[bi]WL[514];B[di]BL[591];W[dj]WL[491];B[fj]BL[579];W[fk]WL[488];B[hj]BL[569];W[gk]WL[485];B[ij]BL[556];W[ji]WL[481];B[jj]BL[553];W[ki]WL[597]LB[ca:10][lb:4][ag:4][rh:20][or:4]C[Assess the board. 1) do I have any weak groups?2) do my opponent has any weak groups?3) what are the big areas?4) what is the estimated score?Its around 30-12 for black, however white got huge area in the bottom and two weak groups. Its time for strategical decision. Usually you want to take care of weak groups, but any wasted move right now can give white advantage.]MA[ak][bk][ck][dk][ek][hl][im][jn][ko][lp][lq][lr][ls](;B[mf]BL[548];W[kj]WL[594];B[il]BL[542];W[jh]WL[592];B[lg]BL[537];W[lh]WL[590];B[mh]BL[534];W[mi]WL[588];B[nh]BL[532];W[mk]WL[585];B[kl]BL[525];W[ej]WL[572]C[F11 saves1 stone.., I believe that there are larger points on the board](;B[fi]BL[513](;W[hl]WL[557];B[im]BL[481];W[hn]WL[551];B[kn]BL[474];W[pl]WL[545];B[ql]BL[466];W[pk]WL[537];B[qk]BL[464];W[oj]WL[536];B[pi]BL[462](;W[mn]WL[532];B[in]BL[418];W[ho]WL[528];B[jp]BL[411];W[iq]WL[525];B[jq]BL[409];W[ip]WL[524];B[cq]BL[383](;W[cp]WL[521];B[dq]BL[381];W[eq]WL[520];B[er]BL[374];W[fq]WL[518];B[bp]BL[594];W[bo]WL[516];B[bq]BL[592];W[cn]WL[515];B[fr]BL[590];W[gr]WL[513];B[lp]BL[571];W[fs]WL[510];B[dr]BL[569];W[ob]WL[503];B[pb]BL[553];W[nb]WL[502]C[R17 aji is left.];B[on]BL[538];W[nm]WL[596];B[rq]BL[534];W[rr]WL[592];B[qp]BL[521];W[pr]WL[590];B[po]BL[510];W[op]WL[582];B[fe]BL[484];W[de]WL[577];B[dg]BL[482];W[be]WL[573];B[bd]BL[476];W[jr]WL[554];B[kr]BL[474];W[ir]WL[552];B[lq]BL[470];W[mr]WL[550];B[lr]BL[463];W[ke]WL[539];B[kf]BL[460];W[le]WL[538];B[oi]BL[454];W[nj]WL[527];B[me]BL[449];W[md]WL[524];B[pm]BL[428];W[om]WL[521];B[ml]BL[419];W[nl]WL[517];B[lk]BL[410](;W[lj]WL[514];B[kk]BL[404];W[qc]WL[499];B[pc]BL[397];W[qb]WL[497];B[qd]BL[385];W[pa]WL[496];B[rc]BL[597];W[rb]WL[494];B[rd]BL[591];W[sb]WL[493];B[mp]BL[580];W[np]WL[490];B[nr]BL[574];W[nq]WL[476];B[ms]BL[572];W[or]WL[474];B[ns]BL[570];W[os]WL[469];B[ls]BL[568];W[mo]WL[559];B[hm]BL[540];W[gm]WL[557];B[hk]BL[538];W[gl]WL[549];B[sr]BL[528];W[rs]WL[536];B[ae]BL[525];W[af]WL[528];B[ad]BL[522];W[bg]WL[523];B[ne]BL[512];W[od]WL[516];B[of]BL[510];W[pf]WL[510];B[pg]BL[508];W[sc]WL[508];B[sd]BL[506];W[mm]WL[491];B[lm]BL[502];W[io]WL[486];B[jo]BL[499];W[oo]WL[483];B[lf]BL[487];W[gs]WL[471];B[es]BL[482];W[nn]WL[465];B[pn]BL[474];W[lo]WL[462];B[ko]BL[471];W[js]WL[460];B[ha]BL[465];W[ia]WL[456];B[ao]BL[455];W[an]WL[453];B[ap]BL[453];W[br]WL[450];B[cs]BL[592](;W[cr]WL[445]C[White mistake.](;B[bs]BL[589];W[ar]WL[443];B[ll]BL[538];W[ss]WL[440];B[sq]BL[534];W[kh]WL[437];B[]BL[508];W[]WL[432];B[]BL[508]C[ dividesby0 8k+: dividesby0 dead @ E13 Enamano done];TW[ka][la][ma][na][oa][qa][ra][sa][jb][lb][mb][lc][mc][kd][ld][bf][cf][ag][ah][bh][ih][ai][li][aj][bj][mj][ak][bk][ck][dk][ek][nk][ok][al][bl][cl][dl][el][fl][ol][am][bm][cm][dm][em][fm][bn][dn][en][fn][gn][co][do][eo][fo][go][no][ep][fp][gp][hp][gq][hq][oq][pq][hr][qr][hs][is][ps][qs]TB[aa][ba][ca][da][ea][fa][ga][ab][bb][cb][db][eb][fb][gb][ac][bc][ge][re][se][ff][gf][nf][rf][sf][eg][mg][ng][qg][rg][sg][eh][fh][oh][ph][qh][rh][sh][qi][ri][si][qj][rj][sj][ik][jk][rk][sk][jl][rl][sl][jm][km][qm][rm][sm][jn][rn][sn][qo][ro][so][kp][sp][kq][ds]OS[])(;B[ar]C[Alive]))(;W[ar](;B[cr];W[bs]C[Seki])(;B[bs];W[cr]C[Seki])))(;W[jk];B[ik];W[kk]C[Squeeze it :)]))(;W[lp];B[cp];W[jk];B[ik];W[kk];B[jl];W[io];B[jo];W[ko]C[Is this so alive? ])(;W[bp]C[That's a hard move but playable IF white is extra strong around. Intention is to kill black invasion.];B[cp];W[bo];B[co];W[cn]C[Use with caution - leads to crazy fight. With enough support on the outside may be nice for white.];B[do];W[ep];B[bq];W[dr]))(;W[fq]C[White should probably start securing the points. ]))(;W[fq]C[Good enough for white/]))(;B[fq]TR[fi]C[First ignore.];W[fi]TR[eh]C[White takes?];B[fe]C[Now would white let you play second move in sente? He must spend one more move to kill D11 :) And his three stones are in atari... ](;W[de];B[eh];W[dg];B[fh]C[If both players save their stones - black played F3 for free!])(;W[fh]C[White want to kill 4 stones. Ok.];B[dn]C[Still three white stones are in atari. Sente has great value and often you can give away many stones to keep it. ])))(;B[kj];W[li];B[lj];W[lg]C[This is one possible scneario - strengthen group which can have impact on whites area and force weak white group to defend. In exchange for second weak gorup (still not totaly dead and giving some ko threats for black). From now all reducing operations will be much easier.]MA[bp][lp][cq][fq][dr]))(;W[ef];B[cg];W[eh](;B[eg](;W[fh](;B[fg];W[dg];B[fi];W[ch];B[ci];W[bh];B[bg];W[bi];B[be](;W[bf];B[af];W[cf];B[ag];W[ah];B[ae];W[bd])(;W[di](;B[eh];W[ej])(;B[ek];W[eh])))(;B[dg];W[fg];B[fi];W[di];B[be];W[cf];B[bg];W[bf]))(;W[di];B[fh]))(;B[fh];W[eg];B[di];W[fj];B[fi];W[bf]C[Difficult])))(;B[df](;W[cc];B[bd](;W[de];B[bc])(;W[bc];B[be](;W[cf];B[de];W[bf];B[fe];W[ee];B[ef];W[fe];B[fg])(;W[de];B[cf]))(;W[be];B[bc];W[cb];B[de];W[bb];B[fe];W[ee];B[ef];W[fe];B[fg]))(;W[bd];B[cc];W[de];B[bf](;W[cf];B[cg])(;W[cg];B[cf];W[dg];B[eg];W[ef];B[be];W[fg];B[eh];W[ch];B[ee]))))(;B[dc]C[Being ahead is important. Hard for white.]))(;B[ge]C[Now should white kill these two stones? Is this that big right now?]))(;B[gg];W[gf];B[hf](;W[ih];B[hg]C[Divide and conquer :)])(;W[hg];B[hh]C[You can read this ladder out.])))(;B[lc]C[If you play P17 kick, you should be prepared to push around the white group. J15 is not doing much.];W[le]C[White owns black moves to get healthier shape. This may look like influence, but P13 and Q10 erase it quite effectively.];B[gd]C[Move from the game still playable.]))(;B[lc];W[qc];B[qd];W[pc];B[od];W[nb];B[me]C[I like the black influence after closing white in the corner.]))(;W[ql];B[pl];W[pk];B[ok];W[qk];B[pm];W[qj];B[pi];W[qh]C[Now black would like to have R3 invasion open. ]))(;AB[qk]C[Usual and better move.]PL[B]))