(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]RU[Japanese]SZ[19]KM[6.50]PW[kentL]PB[6keys]WR[11k]BR[16k]DT[2014-09-27]CP[online-go.com]PC[OGS: http://online-go.com/game/921165]C[6keys: hi, glkentL: hi]RE[W+74.50];B[pd]C[kentL: hi];W[dd]C[**Commentary starts here**Hey Harry, I took a look at your game, I tried to make the explanations as simple as possible. I hope it's not too confusing or I added too many variations :-)It seems to me that you need to work on the fundamentals and on life and death.];B[qp];W[dq];B[oq](;W[qk]LB[qj:A]C[White makes a mistake of playing here instead of A - see variation.](;B[do];W[co];B[cn];W[cp];B[dn];W[fq](;B[dk]C[Too close. The stronger a group is, the further you should extend from it.];W[qn];B[fc];W[id];B[cc];W[dc](;B[db]C[This move is not the best.];W[eb];B[cb];W[ec];B[be];W[cf];B[ce];W[de];B[nc];W[lc];B[qg];W[qc];B[qd];W[rd];B[re](;W[rc](;B[pc]C[This is what white wants];W[pb];B[ob];W[qa]LB[sb:A]C[White is not yet alive.It's a little complicated but A makes a ko.](;B[ch]C[Too soft];W[dh];B[di];W[eh](;B[ei]C[Not the best];W[fh];B[kp];W[qq];B[pq];W[rp];B[rq];W[ro](;B[po]C[This leaves a weakness.](;W[ip](;B[io]C[I dont understand this move at all, seems to have no purpose. See variations for other options];W[hp];B[ho];W[jo];B[jp];W[ko];B[lo];W[in](;B[jn]C[This fight seems hard and for what? You picked a fight without a reason];W[kn];B[jm];W[ln];B[mo];W[im];B[jl];W[il](;B[mm]C[A mistake];W[go];B[hn];W[gm];B[ik]C[You don't need this move, and its not sente](;W[hm](;B[jk]C[Seems a bit slow];W[lf];B[ig];W[gf];B[ld];W[kc];B[kd];W[jd];B[kf];W[md];B[me];W[ke];B[le];W[je];B[jf];W[lg];B[ng];W[nk](;B[oj]C[Seems like the wrong side to peep from];W[ok];B[pm]C[Nothing here];W[qm];B[pl];W[pk];B[ql];W[rl];B[mj];W[nj];B[ni];W[oi](;B[pj]C[Seems bad to try and save this stone];W[pi](;B[oh];W[mi];B[nh];W[ml];B[ph];W[qi](;B[li]C[This is OK but];W[lj];B[mh];W[ll];B[lm];W[pn](;B[on]C[You dont have to give up the stones];W[om];B[nm];W[ol];B[nn];W[km];B[kl];W[gn];B[lk];W[mk];B[kj];W[hh];B[ih];W[ii];B[hi];W[gi];B[hj];W[hg](;B[gj]C[A mistake];W[if];B[ji];W[jg];B[jh];W[kg];B[mc];W[mf];B[ne];W[nf];B[of];W[rg];B[rh];W[rf](;B[se]C[Seems OK but];W[qh](;B[qf]C[A mistake];W[ri]LB[sb:A]C[A makes ko];B[sd]C[Bad because there is still a Ko before this];W[rb];B[sg];W[sh];B[sf];W[rh];B[iq];W[hq](;B[jq]C[This is gote, always look for sente moves];W[bn];B[bm];W[bo];B[em]LB[ea:B][cg:A]C[Gote again, should be at A or B];W[bf]C[Huge move](;B[af]C[A mistake](;W[cd]C[White can play something better];B[bd];W[ae];B[ad](;W[ab];B[bg]C[You got lucky :)];W[da](;B[ca]C[Too risky](;W[ea];B[bc];W[bb]C[A terrible move](;B[ba]C[You should not answer, his move doesnt do anything];W[dg];B[cg];W[df](;B[oa]C[You have a chance to use this aji];W[pa](;B[sc]C[Very bad move, forces you to take gote];W[sb];B[qe];W[mb];B[nb];W[lb];B[fi];W[ir];B[jr];W[is];B[js];W[hr];B[ep];W[eq];B[an];W[ao];B[am](;W[qr]C[This shouldnt work for white](;B[pr]C[Bad reading, maybe? :)];W[rr];B[qs];W[rs];B[ps];W[qo];B[pp];W[gh];B[fl];W[gl];B[gk];W[fp];B[fn];W[eo];B[fo];W[dp];B[en];W[fm](;B[ep]C[too risky, should defend**This is the last comment**Mostly the game had 3 problems:1) Bad reading - study life and death problems2) No purpose - all your moves should have a clear aim3) No sente - always look for moves that your opponent must respond to, so you can continue elsewhere ];W[oe];B[nd];W[eo];B[mn];W[io];B[ep];W[lh];B[kh];W[eo];B[ma];W[la];B[ep];W[jj];B[ij];W[eo];B[na];W[el];B[fk];W[cm];B[ep];W[dm];B[cl];W[eo];B[dl];W[bl];B[ek];W[bk];B[bj];W[cj];B[ci];W[bi];B[bh];W[aj];B[ah];W[ai];B[dj];W[ck];B[em];W[en];B[el];W[nl];B[];W[]C[6keys: thanks for the game kentL: ty])(;B[el]C[Should defend]))(;B[rr]C[White is captured - always extend from the weakest stone]))(;W[rr]C[This is better for white];B[qr];W[sq]))(;B[ka]))(;B[lb];W[kb];B[na]C[this threatens a ko in the corner](;W[la]C[if here];B[pa]C[ko])(;W[pa]C[if white defends];B[ka](;W[ja];B[la];W[ib]C[Sente])(;W[mb];B[la];W[ja];B[ma];W[ib]C[Sente]))))(;B[df]C[Better capture here]))(;W[bc]C[White can cause trouble here still];B[ea];W[ba];B[df];W[bb]TR[ca][cb][db][cc]C[Black is captured]))(;B[bc]C[Its better to defend here]))(;W[bg]LB[ab:A]C[better for white, black must defend at A])(;W[bh]C[Also possible]))(;W[ag]C[This is better for white](;B[ae]C[If black connects];W[cd];B[bg];W[bd];B[ah];W[ad];B[ag];W[cg]TR[bi]C[the corner is captured in sente])(;B[cd]C[best for black ];W[ae];B[ad];W[ab]C[Some life and death trouble here for black])))(;B[cd]C[The correct move for black]))(;B[ea]C[This is sente];W[fa];B[da];W[fb])(;B[cg]C[This is sente too];W[df]))(;B[ri]C[Black can atari first];W[qj];B[qf]C[White is captured]))(;B[qf]C[This looks best];W[se];B[qe](;W[qh]C[white can't cut];B[ri];W[qj];B[sg]C[White is captured])(;W[sf];B[sd];W[sc];B[ri]LB[rb:A]C[Black threatens to kill at A];W[rb];B[jr]C[Sente];W[ir];B[cg];W[df];B[ea]C[Always look for sente])))(;B[if]C[Here, although ugly, is better];W[ji];B[kh]LB[kg:A][jh:B]C[Black has miai - two way - connection])(;B[ji]C[This is also possible];W[if];B[jg]))(;B[om]C[You can save the stones](;W[on];B[nn])(;W[nm];B[nn])))(;B[lj]C[Here is better]))(;B[mi]C[Still defending is better]))(;B[mi]C[Better defend here]))(;B[pl]C[This looks better](;W[pk];B[rm](;W[ql];B[qm];W[pm];B[pn];W[om];B[rn];W[qo];B[qr]C[White is captured])(;W[qm];B[ql];W[rl];B[rk];W[ol];B[pm]C[White is cut])(;W[pm]C[The best move for white];B[ql];W[ol];B[rk];W[rj];B[ri](;W[sk];B[sl]C[Ko])(;W[qj];B[sj]LB[om:A]C[White has little eyespace and there's still a cut at A])))(;W[ql];B[oj]C[White is cut](;W[pk];B[ok];W[ol];B[nl];W[om];B[mn])(;W[ok];B[pk];W[pj];B[pi];W[qj];B[om];W[oi];B[nj];W[ni];B[mj];W[ph];B[mi]))))(;B[cg]C[This is still big])(;B[jc]C[Maybe invading here is possible]))(;W[jq]C[White can ignore]))(;B[gp]C[This one first, to prevent the geta](;W[jk];B[kl](;W[ij];B[mm]C[White is captured.])(;W[mm];B[ik]C[Possible]))(;W[ll];B[jk];W[gq];B[gn];W[ik];B[jj];W[ij];B[ji](;W[ii];B[mm];W[kl];B[mk]C[Black could capture])(;W[nm];B[ii];W[hi];B[hj]C[Could capture this group])))(;B[go]C[This looks possible];W[jk];B[kl](;W[ij];B[mm]C[White is captured])(;W[mm];B[ik]C[Possible])))(;B[hn]C[Maybe this];W[im];B[hm]C[white has a weak group];W[il](;B[km];W[jn];B[gk]C[Maybe this is OK];W[ln];B[mo])(;B[ln]C[or here];W[km];B[gk])))(;B[jq]C[Seems OK to make territory on the bottom])(;B[iq]C[Possible]))(;W[rr]C[Later (in yose) white can play this];B[qr];W[sq]C[It's big later]))(;B[qr]C[Its better to capture]))(;B[cg]C[This is important: When this type of shape occurs, this move is usually DOUBLE SENTE - that is, sente for both players - so it's important to play it first.This move stayed unplayed for a long time, later it became very big.];W[df]LB[bf:A]C[Black can connect at A now or later, securing the left side]))(;B[df]LB[fb:A]C[Should cut and try to play A later])(;B[fb]C[This directly also looks OK.](;W[fd];B[ea]C[Good for black])(;W[fa];B[df]C[Black can cut now];W[cg](;B[ef]TR[cf][cg]SQ[fa][eb][dc][ec][dd][de]C[Here to threaten both groups])(;B[dg]C[Also here is good]))))(;B[pb]LB[qg:A]C[This works because of A];W[pc];B[oc];W[qe];B[pe];W[qf];B[rf];W[pf];B[ne];W[pg];B[qh];W[qb];B[ob];W[ph];B[qi]C[White should die in the corner.]))(;W[rb]C[White should try to get a ko instead](;B[sd];W[sc];B[rc]C[Ko])(;B[pb];W[pc];B[ob];W[od]C[More complicated but could also work])))(;B[cd]C[This is normal in this situation.](;W[de];B[db];W[eb];B[cb];W[ec];B[cf]C[The normal sequence here seems OK for black.])(;W[ce]LB[fc:A]C[White can't hane here because of A.](;B[cb]C[This is the simplest refutation.](;W[de]C[White must connect.];B[db]TR[dc][dd][id][ce][de]C[White's group is floating.])(;W[db]C[If white goes here];B[de]C[Black can cut](;W[cf];B[ed]C[White is captured])(;W[fd];B[ee];W[ed];B[cf]C[Black gets a good result])(;W[ee];B[df];W[fd];B[cf]C[Also good for black])(;W[df];B[ee];W[be];B[ed]C[White captured again.])))(;B[db]C[Another possible refutation];W[eb];B[cb];W[ec];B[cf](;W[be];B[de];W[df];B[ee];W[cg];B[ef];W[dg];B[fb]C[White is captured])(;W[de];B[be]C[OK for black])))))(;B[cj]C[This move would be normal.The rule of thumb is: Extensions should always be the height of your wall+1. In this case, the "wall" is 2 stones high, so an extension of 3 is correct.]))(;B[qm]C[Black can play here and](;W[qh]LB[pd:A]C[The normal extension does not threaten A.];B[do];W[nc];B[qf])(;W[qg];B[mc]LB[qi:A]C[This extension leaves a hole at A])(;W[qf]C[This would simply be too far.];B[ph];W[of];B[nd];W[rd];B[qc];W[rh]LB[ph:A]C[Black can leave A as aji and use it later.];B[do])))(;W[qj]C[This move is no longer popular, but was used extensively in the past.];B[ql];W[qf];B[qh];W[of];B[nc];W[rd]LB[qc:A][pi:B](;B[pi];W[qc];B[kc]C[Black makes an exchange.])(;B[qc];W[pi]C[Black gets the corner in sente.]))(;W[qf]C[Today, this move is much more popular.]))