Your analysis is again correct and I just want to hand a mental device to you on how to evaluate such situations. It's really like a detective: what's the situation, what's my weapon, where's the weakness?
(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]
RU[Japanese]SZ[19]KM[6.50]TM[300]OT[5x30 byo-yomi]
PW[Jefe]PB[hl782]WR[5k]BR[6k]DT[2015-09-14]PC[The KGS Go Server at http://www.gokgs.com/]RE[W+Resign]
;B[pd]BL[297.663]
;W[dp]WL[296.531]
;B[pq]BL[295.382]C[Jefe [5k\]: hi - hf
hl782 [6k\]: hi gg
]
;W[dd]WL[291.536]
;B[qk]BL[292.159]
;W[qo]WL[287.588]
;B[qp]BL[289.911]
;W[po]WL[286.088]
;B[np]BL[287.91]
;W[mq]WL[281.281]
;B[nq]BL[284.234]
;W[mp]WL[278.822]
;B[no]BL[278.722]
;W[mo]WL[276.198]
(;B[nn]BL[258.247]
;W[pl]WL[274.712]
;B[pk]BL[253.545]
;W[ol]WL[273.17]
;B[nj]BL[250.571]
;W[nk]WL[267.368]
;B[mj]BL[246.427]
;W[mk]WL[265.483]
;B[lk]BL[239.96]
;W[ll]WL[262.348]
(;B[lj]BL[236.666]
;W[kl]WL[260.392]
;B[fq]BL[196.715]
;W[hq]WL[257.098]
;B[cq]BL[194.108]
;W[dq]WL[254.468]
;B[cp]BL[191.847]
;W[do]WL[252.235]
;B[dr]BL[190.757]
;W[er]WL[250.85]
;B[cr]BL[189.754]
;W[eq]WL[250.101]
;B[cn]BL[188.053]
;W[mn]WL[248.504]
;B[jd]BL[172.861]
;W[qf]WL[246.316]
;B[qe]BL[169.526]
;W[pf]WL[244.418]
;B[nd]BL[168.115]
;W[qi]WL[243.628]
;B[oi]BL[162.413]
;W[ok]WL[241.431]
;B[pj]BL[156.894]
;W[pi]WL[238.545]
;B[oj]BL[112.669]
;W[oh]WL[232.416]
;B[nh]BL[110.527]
;W[og]WL[231.377]
;B[ng]BL[104.243]
;W[nf]WL[229.779]
;B[mf]BL[100.178]
;W[rj]WL[228.652]
;B[rk]BL[80.442]
;W[rh]WL[222.353]
;B[fc]BL[59.129]
;W[lc]WL[215.89]
;B[mc]BL[51.338]
;W[ld]WL[212.912]
;B[ne]BL[34.687]
;W[of]WL[203.531]
;B[le]BL[30.104]
;W[ic]WL[196.243]
;B[jc]BL[24.828]
;W[id]WL[193.14]
;B[cc]BL[12.45]
;W[dc]WL[190.886]
;B[cd]BL[9.011]
;W[ke]WL[182.347]
;B[je]BL[30]OB[5]
;W[ie]WL[176.581]
;B[kf]BL[30]OB[5]
;W[qc]WL[170.238]
(;B[re]BL[30]OB[5]
;W[oc]WL[166.69]
;B[pe]BL[30]OB[5]
;W[mb]WL[159.58]
;B[pc]BL[30]OB[5]
;W[nc]WL[151.947]
;B[pb]BL[30]OB[5]
;W[md]WL[149.171]
(;B[me]BL[30]OB[5]
;W[kb]WL[147.574]
;B[jb]BL[30]OB[5]
;W[ob]WL[145.333]
;B[de]BL[30]OB[5]
;W[ib]WL[143.15]
;B[ed]BL[30]OB[5]C[So ]
;W[ce]WL[60.039]
;B[cf]BL[30]OB[5]
;W[ja]WL[47.336]
;B[if]BL[30]OB[5]
;W[bm]WL[30.008]
(;B[co]BL[30]OB[5]
;W[ck]WL[26.953]
(;B[bi]BL[30]OB[5]
;W[cg]WL[25.239]
;B[bf]BL[30]OB[5]
;W[bg]WL[17.276]
;B[dg]BL[30]OB[5]
;W[ci]WL[14.909]
;B[bh]BL[30]OB[5]
;W[ch]WL[13.564]
;B[ag]BL[30]OB[5]
;W[bj]WL[12.069]
;B[ah]BL[30]OB[5]
;W[ee]WL[10.926]
;B[be]BL[30]OB[5]
;W[fd]WL[8.856]
;B[ec]BL[30]OB[5]
;W[ge]WL[6.49]
;B[ff]BL[30]OB[5]
;W[fe]WL[1.714]LB[ma:C][qh:B][io:A]TR[aa][ba][ca][da][ra][sa][ab][bb][cb][db][qb][rb][sb][ac][bc][dc][rc][sc][ad][bd][dd][qd][rd][sd][ae][lf][kg][lg][mg][kh][lh][mh][li][mi][ni][bq][qq][ar][br][pr][qr][rr][as][bs][ps][qs][rs][ss]C[Let's pause here and count
Black has 4 corners and a centre territory.
I count 52 points
White has 5 points at B and C
White has a moyo at A.
At first sight the moyo is about 50 points max, so probably rather half of that, say 30
And komi 6,5
So it's a close game.
Where are the weaknesses?
Black must be careful about the lower left corner
White is weak at the left.
Strategy: strengthen lower left, threaten left side, so as to reduce the moyo]
(;B[fr]BL[30]OB[4]
;W[es]WL[30]OW[5]C[So i got greedy here - and I thought white's territory on the bottom was so big I felt a compelling need to save my group. Well it ended up in costing me the game.]
(;B[fo]BL[30]OB[4]
;W[en]WL[30]OW[4]
;B[fn]BL[30]OB[4]
;W[em]WL[30]OW[4]
;B[fm]BL[30]OB[4]
;W[fl]WL[30]OW[4]
(;B[gl]BL[30]OB[4]
;W[gm]WL[30]OW[4]
;B[hm]BL[30]OB[4]
;W[gn]WL[30]OW[4]
;B[ho]BL[30]OB[4]
;W[hl]WL[30]OW[4]
;B[hn]BL[30]OB[4]
;W[gk]WL[30]OW[4]
;B[go]BL[30]OB[4]
;W[gl]WL[30]OW[4]
;B[jm]BL[30]OB[3]
;W[jp]WL[30]OW[4]
;B[jl]BL[30]OB[3]
;W[jk]WL[30]OW[4]
;B[ik]BL[30]OB[3]
;W[il]WL[30]OW[4]
;B[kk]BL[30]OB[3]
;W[jj]WL[30]OW[4]
;B[ij]BL[30]OB[3]
;W[ji]WL[30]OW[4]
;B[ii]BL[30]OB[3]
;W[im]WL[30]OW[4]
;B[jn]BL[30]OB[3]
;W[jh]WL[30]OW[4]
;B[ih]BL[30]OB[3]
;W[in]WL[30]OW[4]
;B[jo]BL[30]OB[1]
;W[io]WL[30]OW[4]C[GG...]
;B[rg]BL[30]OB[1]
;W[rf]WL[30]OW[4]
;B[sf]BL[30]OB[1]
;W[qg]WL[30]OW[4]
;B[sh]BL[30]OB[1]
;W[si]WL[30]OW[4]
;B[nm]BL[30]OB[1]
;W[mm]WL[30]OW[4]
;B[mr]BL[30]OB[1]
;W[lr]WL[30]OW[4]
;B[nr]BL[30]OB[1]
;W[kq]WL[30]OW[4]
;B[ro]BL[30]OB[1]
;W[rn]WL[30]OW[4]
;B[rp]BL[30]OB[1]
;W[sg]WL[30]OW[4]
;B[se]BL[30]OB[1]
;W[pa]WL[30]OW[4]
;B[qa]BL[30]OB[1]
;W[oa]WL[30]OW[4]
;B[rb]BL[30]OB[1]
;W[gc]WL[30]OW[4]
;B[db]BL[30]OB[1]
;W[ef]WL[30]OW[4]
;B[df]BL[30]OB[1]
;W[eg]WL[30]OW[4]
;B[dh]BL[30]OB[1]
;W[di]WL[30]OW[4]
;B[eh]BL[30]OB[1]
;W[ao]WL[30]OW[4]C[This really hurt - not playing b6 got me here.]
;B[ar]BL[30]OB[1]
;W[ds]WL[30]OW[4]
;B[bs]BL[30]OB[1]
;W[jg]WL[30]OW[4]
;B[jf]BL[30]OB[1]
;W[ig]WL[30]OW[4]
;B[gh]BL[30]OB[1]
;W[fh]WL[30]OW[4]
;B[fi]BL[30]OB[1]
;W[fg]WL[30]OW[4]
;B[ei]BL[30]OB[1]
;W[ej]WL[30]OW[4]
;B[fj]BL[30]OB[1]
;W[ek]WL[30]OW[4]
;B[bq]BL[30]OB[1]
;W[hh]WL[30]OW[4]
;B[hi]BL[30]OB[1]
;W[hg]WL[30]OW[4]
;B[hf]BL[30]OB[1]
;W[gf]WL[30]OW[4]
;B[gb]BL[30]OB[1]
;W[hb]WL[30]OW[4]
;B[fa]BL[30]OB[1]
;W[rm]WL[30]OW[4]
;B[pm]BL[30]OB[1]
;W[om]WL[30]OW[4]
;B[cm]BL[30]OB[1]
;W[cl]WL[30]OW[4]
;B[bn]BL[30]OB[1]
;W[an]WL[30]OW[4]
;B[dn]BL[30]OB[1]
;W[eo]WL[30]OW[4]
;B[lh]BL[30]OB[1]
;W[ms]WL[30]OW[4]
;B[ns]BL[30]OB[1]
;W[ls]WL[30]OW[4]
;B[sk]BL[30]OB[1]
;W[kg]WL[30]OW[4]
;B[lg]BL[30]OB[1]
;W[gg]WL[30]OW[4]
;B[gi]BL[30]OB[1]
;W[so]WL[30]OW[4]
;B[sp]BL[30]OB[1]
;W[sn]WL[30]OW[4]
;B[pp]BL[30]OB[1]
;W[oo]WL[30]OW[4]
;B[on]BL[30]OB[1]
;W[pn]WL[30]OW[4]
;B[op]BL[30]OB[1]
;W[qm]WL[30]OW[4]
;B[ql]BL[30]OB[1]
;W[ki]WL[30]OW[4]
;B[kd]BL[30]OB[1]
;W[ap]WL[30]OW[4]
;B[aq]BL[30]OB[1]
;W[am]WL[30]OW[4]
;B[aj]BL[30]OB[1]
;W[ak]WL[30]OW[4]
;B[he]BL[30]OB[1]
;W[hd]WL[30]OW[4]
;B[ha]BL[30]OB[1]
;W[li]WL[30]OW[4]
;B[mi]BL[30]OB[1]
;W[ia]WL[30]OW[4]
;B[ga]BL[30]OB[1]
;W[qb]WL[30]OW[4]
;B[rc]BL[30]OB[1]
;W[ra]WL[30]OW[4]
;B[qd]BL[30]OB[1]
;W[qa]WL[30]OW[4]
;B[sb]BL[30]OB[1]
;W[ai]WL[30]OW[4]
;B[af]BL[30]OB[1]
;W[aj]WL[30]OW[4]
;B[nl]BL[30]OB[1]
;W[ml]WL[30]OW[4]
;B[dm]BL[30]OB[1]
;W[dl]WL[30]OW[4]
;B[qj]BL[30]OB[1]
;W[sj]WL[30]OW[4]
;B[sl]BL[30]OB[1]
;W[fk]WL[30]OW[4]
;B[]BL[30]OB[1]
;W[]WL[30]OW[4]TW[ka][la][ma][na][lb][nb][hc][mc][gd][ff][pg][rg][ph][qh][sh][ri][cj][dj][bk][dk][al][bl][el][jl][fm][hm][jm][km][lm][pm][fn][hn][jn][kn][ln][qn][fo][go][ho][jo][ko][lo][ep][fp][gp][hp][ip][kp][lp][fq][gq][iq][jq][lq][fr][gr][hr][ir][jr][kr][fs][gs][hs][is][js][ks]TB[aa][ba][ca][da][ea][ab][bb][cb][eb][fb][ac][bc][dc][sc][ad][bd][dd][rd][sd][ae][ce][ke][lf][mg][mh][ni][oq][qq][rq][sq][br][or][pr][qr][rr][sr][as][os][ps][qs][rs][ss]C[Left with almost nothing at the end. I had such a great start to the game - I thought the game was surely sealed when i took the corner on the upper left. A few mistakes here and there compounded into a tough loss to take.])
(;B[hp]C[I missed this move.]
;W[ip]
;B[gl]C[Now white cannot cut.]
(;W[gk]
;B[fk]
(;W[dl])
(;W[el]
;B[hk]
;W[gj]
;B[hm]C[If i did this i was surely alive.]))
(;W[gm]
;B[hm]
;W[gn]
;B[hn]
;W[go]
;B[gp])))
(;B[dj]
;W[cj]
;B[hl]C[A variation like this was so much better...]
;W[hn]
;B[im]
;W[in]
;B[jm]
;W[jn]
;B[fl]C[The whole center is starting to look like mine now, and white's territory looks hardly bigger than 30 points.]))
(;B[cm]
(;W[bl]C[White defends]
;B[em]C[Black reduces and ...]
;W[fn]
;B[dj]C[Threatens again]
;W[cj]
;B[ek]LB[hi:A][hm:B]C[Black is connecting his corner stones to his centre, influencing his own potential at A, decreasing White's potential at B and still the left side is not safe.]
;W[dl]
;B[en]
;W[el]
;B[fm])
(;W[em]C[This would be a gamble for White]
(;B[dl]C[White's left will come under pressure. White can't have both and the sacrifice would be too big.])
(;B[bl]C[Black can even play peacefully]
;W[ek]
;B[ik]
;W[im]
;B[mr]
;W[lr]
;B[nr]C[It's really hard to make something of that moyo]))
(;W[el]C[If White comes from above ...]
;B[em]
;W[fm]
;B[en]
;W[fl]
;B[fo]
;W[fr]
;B[ho]C[unacceptable])))
(;B[ci]C[That was another mistake]))
(;B[bn]C[not playing this really big my butt later on in the game.]))
(;B[kb]C[RIP white... shame I didn't see this in game.]))
(;B[pc]C[Secure the top for myself...]
;W[re]
;B[qd]
;W[rd]
;B[rc]C[I still get the corner as well so this was most definitely the better variation.]))
(;B[kl]C[More severe.]
;W[lj]
;B[kk]
;W[mm]C[Would be a fight here if i played the double hane.]))
(;B[om]C[This was probably a good option to play here]))
RU[Japanese]SZ[19]KM[6.50]TM[300]OT[5x30 byo-yomi]
PW[Jefe]PB[hl782]WR[5k]BR[6k]DT[2015-09-14]PC[The KGS Go Server at http://www.gokgs.com/]RE[W+Resign]
;B[pd]BL[297.663]
;W[dp]WL[296.531]
;B[pq]BL[295.382]C[Jefe [5k\]: hi - hf
hl782 [6k\]: hi gg
]
;W[dd]WL[291.536]
;B[qk]BL[292.159]
;W[qo]WL[287.588]
;B[qp]BL[289.911]
;W[po]WL[286.088]
;B[np]BL[287.91]
;W[mq]WL[281.281]
;B[nq]BL[284.234]
;W[mp]WL[278.822]
;B[no]BL[278.722]
;W[mo]WL[276.198]
(;B[nn]BL[258.247]
;W[pl]WL[274.712]
;B[pk]BL[253.545]
;W[ol]WL[273.17]
;B[nj]BL[250.571]
;W[nk]WL[267.368]
;B[mj]BL[246.427]
;W[mk]WL[265.483]
;B[lk]BL[239.96]
;W[ll]WL[262.348]
(;B[lj]BL[236.666]
;W[kl]WL[260.392]
;B[fq]BL[196.715]
;W[hq]WL[257.098]
;B[cq]BL[194.108]
;W[dq]WL[254.468]
;B[cp]BL[191.847]
;W[do]WL[252.235]
;B[dr]BL[190.757]
;W[er]WL[250.85]
;B[cr]BL[189.754]
;W[eq]WL[250.101]
;B[cn]BL[188.053]
;W[mn]WL[248.504]
;B[jd]BL[172.861]
;W[qf]WL[246.316]
;B[qe]BL[169.526]
;W[pf]WL[244.418]
;B[nd]BL[168.115]
;W[qi]WL[243.628]
;B[oi]BL[162.413]
;W[ok]WL[241.431]
;B[pj]BL[156.894]
;W[pi]WL[238.545]
;B[oj]BL[112.669]
;W[oh]WL[232.416]
;B[nh]BL[110.527]
;W[og]WL[231.377]
;B[ng]BL[104.243]
;W[nf]WL[229.779]
;B[mf]BL[100.178]
;W[rj]WL[228.652]
;B[rk]BL[80.442]
;W[rh]WL[222.353]
;B[fc]BL[59.129]
;W[lc]WL[215.89]
;B[mc]BL[51.338]
;W[ld]WL[212.912]
;B[ne]BL[34.687]
;W[of]WL[203.531]
;B[le]BL[30.104]
;W[ic]WL[196.243]
;B[jc]BL[24.828]
;W[id]WL[193.14]
;B[cc]BL[12.45]
;W[dc]WL[190.886]
;B[cd]BL[9.011]
;W[ke]WL[182.347]
;B[je]BL[30]OB[5]
;W[ie]WL[176.581]
;B[kf]BL[30]OB[5]
;W[qc]WL[170.238]
(;B[re]BL[30]OB[5]
;W[oc]WL[166.69]
;B[pe]BL[30]OB[5]
;W[mb]WL[159.58]
;B[pc]BL[30]OB[5]
;W[nc]WL[151.947]
;B[pb]BL[30]OB[5]
;W[md]WL[149.171]
(;B[me]BL[30]OB[5]
;W[kb]WL[147.574]
;B[jb]BL[30]OB[5]
;W[ob]WL[145.333]
;B[de]BL[30]OB[5]
;W[ib]WL[143.15]
;B[ed]BL[30]OB[5]C[So ]
;W[ce]WL[60.039]
;B[cf]BL[30]OB[5]
;W[ja]WL[47.336]
;B[if]BL[30]OB[5]
;W[bm]WL[30.008]
(;B[co]BL[30]OB[5]
;W[ck]WL[26.953]
(;B[bi]BL[30]OB[5]
;W[cg]WL[25.239]
;B[bf]BL[30]OB[5]
;W[bg]WL[17.276]
;B[dg]BL[30]OB[5]
;W[ci]WL[14.909]
;B[bh]BL[30]OB[5]
;W[ch]WL[13.564]
;B[ag]BL[30]OB[5]
;W[bj]WL[12.069]
;B[ah]BL[30]OB[5]
;W[ee]WL[10.926]
;B[be]BL[30]OB[5]
;W[fd]WL[8.856]
;B[ec]BL[30]OB[5]
;W[ge]WL[6.49]
;B[ff]BL[30]OB[5]
;W[fe]WL[1.714]LB[ma:C][qh:B][io:A]TR[aa][ba][ca][da][ra][sa][ab][bb][cb][db][qb][rb][sb][ac][bc][dc][rc][sc][ad][bd][dd][qd][rd][sd][ae][lf][kg][lg][mg][kh][lh][mh][li][mi][ni][bq][qq][ar][br][pr][qr][rr][as][bs][ps][qs][rs][ss]C[Let's pause here and count
Black has 4 corners and a centre territory.
I count 52 points
White has 5 points at B and C
White has a moyo at A.
At first sight the moyo is about 50 points max, so probably rather half of that, say 30
And komi 6,5
So it's a close game.
Where are the weaknesses?
Black must be careful about the lower left corner
White is weak at the left.
Strategy: strengthen lower left, threaten left side, so as to reduce the moyo]
(;B[fr]BL[30]OB[4]
;W[es]WL[30]OW[5]C[So i got greedy here - and I thought white's territory on the bottom was so big I felt a compelling need to save my group. Well it ended up in costing me the game.]
(;B[fo]BL[30]OB[4]
;W[en]WL[30]OW[4]
;B[fn]BL[30]OB[4]
;W[em]WL[30]OW[4]
;B[fm]BL[30]OB[4]
;W[fl]WL[30]OW[4]
(;B[gl]BL[30]OB[4]
;W[gm]WL[30]OW[4]
;B[hm]BL[30]OB[4]
;W[gn]WL[30]OW[4]
;B[ho]BL[30]OB[4]
;W[hl]WL[30]OW[4]
;B[hn]BL[30]OB[4]
;W[gk]WL[30]OW[4]
;B[go]BL[30]OB[4]
;W[gl]WL[30]OW[4]
;B[jm]BL[30]OB[3]
;W[jp]WL[30]OW[4]
;B[jl]BL[30]OB[3]
;W[jk]WL[30]OW[4]
;B[ik]BL[30]OB[3]
;W[il]WL[30]OW[4]
;B[kk]BL[30]OB[3]
;W[jj]WL[30]OW[4]
;B[ij]BL[30]OB[3]
;W[ji]WL[30]OW[4]
;B[ii]BL[30]OB[3]
;W[im]WL[30]OW[4]
;B[jn]BL[30]OB[3]
;W[jh]WL[30]OW[4]
;B[ih]BL[30]OB[3]
;W[in]WL[30]OW[4]
;B[jo]BL[30]OB[1]
;W[io]WL[30]OW[4]C[GG...]
;B[rg]BL[30]OB[1]
;W[rf]WL[30]OW[4]
;B[sf]BL[30]OB[1]
;W[qg]WL[30]OW[4]
;B[sh]BL[30]OB[1]
;W[si]WL[30]OW[4]
;B[nm]BL[30]OB[1]
;W[mm]WL[30]OW[4]
;B[mr]BL[30]OB[1]
;W[lr]WL[30]OW[4]
;B[nr]BL[30]OB[1]
;W[kq]WL[30]OW[4]
;B[ro]BL[30]OB[1]
;W[rn]WL[30]OW[4]
;B[rp]BL[30]OB[1]
;W[sg]WL[30]OW[4]
;B[se]BL[30]OB[1]
;W[pa]WL[30]OW[4]
;B[qa]BL[30]OB[1]
;W[oa]WL[30]OW[4]
;B[rb]BL[30]OB[1]
;W[gc]WL[30]OW[4]
;B[db]BL[30]OB[1]
;W[ef]WL[30]OW[4]
;B[df]BL[30]OB[1]
;W[eg]WL[30]OW[4]
;B[dh]BL[30]OB[1]
;W[di]WL[30]OW[4]
;B[eh]BL[30]OB[1]
;W[ao]WL[30]OW[4]C[This really hurt - not playing b6 got me here.]
;B[ar]BL[30]OB[1]
;W[ds]WL[30]OW[4]
;B[bs]BL[30]OB[1]
;W[jg]WL[30]OW[4]
;B[jf]BL[30]OB[1]
;W[ig]WL[30]OW[4]
;B[gh]BL[30]OB[1]
;W[fh]WL[30]OW[4]
;B[fi]BL[30]OB[1]
;W[fg]WL[30]OW[4]
;B[ei]BL[30]OB[1]
;W[ej]WL[30]OW[4]
;B[fj]BL[30]OB[1]
;W[ek]WL[30]OW[4]
;B[bq]BL[30]OB[1]
;W[hh]WL[30]OW[4]
;B[hi]BL[30]OB[1]
;W[hg]WL[30]OW[4]
;B[hf]BL[30]OB[1]
;W[gf]WL[30]OW[4]
;B[gb]BL[30]OB[1]
;W[hb]WL[30]OW[4]
;B[fa]BL[30]OB[1]
;W[rm]WL[30]OW[4]
;B[pm]BL[30]OB[1]
;W[om]WL[30]OW[4]
;B[cm]BL[30]OB[1]
;W[cl]WL[30]OW[4]
;B[bn]BL[30]OB[1]
;W[an]WL[30]OW[4]
;B[dn]BL[30]OB[1]
;W[eo]WL[30]OW[4]
;B[lh]BL[30]OB[1]
;W[ms]WL[30]OW[4]
;B[ns]BL[30]OB[1]
;W[ls]WL[30]OW[4]
;B[sk]BL[30]OB[1]
;W[kg]WL[30]OW[4]
;B[lg]BL[30]OB[1]
;W[gg]WL[30]OW[4]
;B[gi]BL[30]OB[1]
;W[so]WL[30]OW[4]
;B[sp]BL[30]OB[1]
;W[sn]WL[30]OW[4]
;B[pp]BL[30]OB[1]
;W[oo]WL[30]OW[4]
;B[on]BL[30]OB[1]
;W[pn]WL[30]OW[4]
;B[op]BL[30]OB[1]
;W[qm]WL[30]OW[4]
;B[ql]BL[30]OB[1]
;W[ki]WL[30]OW[4]
;B[kd]BL[30]OB[1]
;W[ap]WL[30]OW[4]
;B[aq]BL[30]OB[1]
;W[am]WL[30]OW[4]
;B[aj]BL[30]OB[1]
;W[ak]WL[30]OW[4]
;B[he]BL[30]OB[1]
;W[hd]WL[30]OW[4]
;B[ha]BL[30]OB[1]
;W[li]WL[30]OW[4]
;B[mi]BL[30]OB[1]
;W[ia]WL[30]OW[4]
;B[ga]BL[30]OB[1]
;W[qb]WL[30]OW[4]
;B[rc]BL[30]OB[1]
;W[ra]WL[30]OW[4]
;B[qd]BL[30]OB[1]
;W[qa]WL[30]OW[4]
;B[sb]BL[30]OB[1]
;W[ai]WL[30]OW[4]
;B[af]BL[30]OB[1]
;W[aj]WL[30]OW[4]
;B[nl]BL[30]OB[1]
;W[ml]WL[30]OW[4]
;B[dm]BL[30]OB[1]
;W[dl]WL[30]OW[4]
;B[qj]BL[30]OB[1]
;W[sj]WL[30]OW[4]
;B[sl]BL[30]OB[1]
;W[fk]WL[30]OW[4]
;B[]BL[30]OB[1]
;W[]WL[30]OW[4]TW[ka][la][ma][na][lb][nb][hc][mc][gd][ff][pg][rg][ph][qh][sh][ri][cj][dj][bk][dk][al][bl][el][jl][fm][hm][jm][km][lm][pm][fn][hn][jn][kn][ln][qn][fo][go][ho][jo][ko][lo][ep][fp][gp][hp][ip][kp][lp][fq][gq][iq][jq][lq][fr][gr][hr][ir][jr][kr][fs][gs][hs][is][js][ks]TB[aa][ba][ca][da][ea][ab][bb][cb][eb][fb][ac][bc][dc][sc][ad][bd][dd][rd][sd][ae][ce][ke][lf][mg][mh][ni][oq][qq][rq][sq][br][or][pr][qr][rr][sr][as][os][ps][qs][rs][ss]C[Left with almost nothing at the end. I had such a great start to the game - I thought the game was surely sealed when i took the corner on the upper left. A few mistakes here and there compounded into a tough loss to take.])
(;B[hp]C[I missed this move.]
;W[ip]
;B[gl]C[Now white cannot cut.]
(;W[gk]
;B[fk]
(;W[dl])
(;W[el]
;B[hk]
;W[gj]
;B[hm]C[If i did this i was surely alive.]))
(;W[gm]
;B[hm]
;W[gn]
;B[hn]
;W[go]
;B[gp])))
(;B[dj]
;W[cj]
;B[hl]C[A variation like this was so much better...]
;W[hn]
;B[im]
;W[in]
;B[jm]
;W[jn]
;B[fl]C[The whole center is starting to look like mine now, and white's territory looks hardly bigger than 30 points.]))
(;B[cm]
(;W[bl]C[White defends]
;B[em]C[Black reduces and ...]
;W[fn]
;B[dj]C[Threatens again]
;W[cj]
;B[ek]LB[hi:A][hm:B]C[Black is connecting his corner stones to his centre, influencing his own potential at A, decreasing White's potential at B and still the left side is not safe.]
;W[dl]
;B[en]
;W[el]
;B[fm])
(;W[em]C[This would be a gamble for White]
(;B[dl]C[White's left will come under pressure. White can't have both and the sacrifice would be too big.])
(;B[bl]C[Black can even play peacefully]
;W[ek]
;B[ik]
;W[im]
;B[mr]
;W[lr]
;B[nr]C[It's really hard to make something of that moyo]))
(;W[el]C[If White comes from above ...]
;B[em]
;W[fm]
;B[en]
;W[fl]
;B[fo]
;W[fr]
;B[ho]C[unacceptable])))
(;B[ci]C[That was another mistake]))
(;B[bn]C[not playing this really big my butt later on in the game.]))
(;B[kb]C[RIP white... shame I didn't see this in game.]))
(;B[pc]C[Secure the top for myself...]
;W[re]
;B[qd]
;W[rd]
;B[rc]C[I still get the corner as well so this was most definitely the better variation.]))
(;B[kl]C[More severe.]
;W[lj]
;B[kk]
;W[mm]C[Would be a fight here if i played the double hane.]))
(;B[om]C[This was probably a good option to play here]))
The root cause of the mistake is that we see BIG OPPONENT MOYO and not WEAK OPPONENT GROUP.
And the root cause of that is that we see Go as a game of territory, while it is really a game of survival of stones.
So: see WEAK OPPONENT GROUP.
(should be L5 or K6 or L6) and
(should be M11 to really pressure W). But congratulations on
-- whether it works tactically or not, it is the right direction and attitude.
makes an interesting tesuji problem. If W cuts at P11, can you capture the cutting stone? Even if the ladder does not work? If W also cuts at P14, can you capture both cutting stones (still without ladder)?