(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2] RU[Japanese]SZ[19]KM[6.50]TM[1800]OT[5x30 byo-yomi] PW[Strutnoddy]PB[opponent]WR[2k]BR[2k]DT[2018-03-30]PC[The KGS Go Server at http://www.gokgs.com/]C[A fun game on KGS today, lots to think about, in particular some kos and two 3-4 pincer josekis that I'm not confident on]RE[W+Resign] ;B[qd]BL[1793.038] ;W[pp]WL[1796.061] ;B[dc]BL[1790.071] ;W[cp]WL[1792.145] ;B[ce]BL[1787.746] ;W[od]WL[1763.798] ;B[mc]BL[1785.59] ;W[qc]WL[1752.599] ;B[pc]BL[1783.915]C[A joseki I am aware of but not one I know particularly well] ;W[pd]WL[1736.742] ;B[oc]BL[1782.572] ;W[nc]WL[1717.295] (;B[nd]BL[1780.594] ;W[nb]WL[1709.993] ;B[qb]BL[1779.524] ;W[rc]WL[1702.516] ;B[ob]BL[1778.46] (;W[mb]WL[1667.406]TR[cp]C[The marked stone breaks the ladder so white can turn here, I didn't particularly want to give black thickness on the top side] (;B[qe]BL[1774.279] ;W[pf]WL[1641.547] ;B[rb]BL[1772.396] ;W[lc]WL[1590.456]LB[md:A][pe:B]C[sesnei's library says black has a fighting continuation at A and a peaceful one at B, I have a feeling these should not be played immediately. If black plays at B as in the game white will get sente] (;B[pe]BL[1758.022] ;W[oe]WL[1586.876] ;B[of]BL[1757.009] ;W[ne]WL[1585.79] ;B[nf]BL[1755.862] ;W[me]WL[1583.352] ;B[pg]BL[1754.524]LB[gc:A][qm:B]C[All these moves seem forced but the result looks good for black to me, thickness and a large corner. Maybe getting sente is adequate compensation for white? I couldn't decide whether to play A or B easily] ;W[gc]WL[1559.729]LB[qn:A]C[settled on this given it might have an effect on the black corner, playing at A is very passive I suppose. I expected black to approach here now to make use of the thickness] ;B[eq]BL[1750.155]C[Not what I would have played but probably a matter of style] ;W[hq]WL[1547.187] ;B[fp]BL[1745.009]C[another joseki I'm aware of but don't know,I really shoud brush up on these!] (;W[dn]WL[1532.319] (;B[cq]BL[1740.853] ;W[bq]WL[1529.294] ;B[dp]BL[1739.477] ;W[co]WL[1527.419] ;B[cr]BL[1738.479]C[Compared to the variations I have looked up this doesn't look as good for black] ;W[cj]WL[1512.322] ;B[qn]BL[1718.975]LB[cj:B][qn:A]C[Black gets sente to play the large move here. I wonder if I should have played at A instead of B?] ;W[ql]WL[1504.126] ;B[on]BL[1712.786] ;W[np]WL[1501.816] (;B[qj]BL[1676.176] (;W[pj]WL[1468.271]LB[pk:A]TR[on][qn]C[Is black strong enough to cut at at A? Looks like the marked stone might end up in trouble] (;B[pi]BL[1663.961] ;W[pk]WL[1456.128] ;B[oi]BL[1636.256] ;W[mk]WL[1442.001] ;B[mn]BL[1630.781] ;W[lp]WL[1438.489] ;B[kn]BL[1602.742] ;W[kk]WL[1421.082]LB[jq:A]C[I was happy enough that the invasion at A was no longer to severe, so strengthened the centre group] ;B[jq]BL[1565.268] ;W[jp]WL[1417.62] ;B[kp]BL[1546.393]C[no convinced by this move] ;W[ko]WL[1408.477] ;B[kq]BL[1544.573] ;W[lo]WL[1404.482] ;B[jo]BL[1521.072] ;W[ip]WL[1400.457] ;B[mr]BL[1509.097] (;W[nr]WL[1376.079]LB[ln:A]C[A mistake I think, I should just cut at A] ;B[mq]BL[1485.74] (;W[nq]WL[1373.544] ;B[mp]BL[1483.448] ;W[mo]WL[1372.503] ;B[no]BL[1477.28] ;W[jn]WL[1358.059] ;B[io]BL[1460.38] ;W[ho]WL[1326.657] ;B[in]BL[1451.949] ;W[ln]WL[1325.115] ;B[jm]BL[1436.193] ;W[lm]WL[1304.78] ;B[ir]BL[1391.934] ;W[hr]WL[1300.4]C[I thought this was very simple and black was dead, but I am mistaken... At the very least it's complicated!] ;B[gn]BL[1349.994]C[Black's best move here] ;W[go]WL[1270.648] ;B[fo]BL[1346.571] ;W[hn]WL[1266.294] ;B[hm]BL[1344.468] ;W[gm]WL[1265.46] ;B[fn]BL[1340.653] ;W[hl]WL[1263.786] ;B[im]BL[1337.333] (;W[hp]WL[1210.312] (;B[gl]BL[1316.36] ;W[lr]WL[1092.345]C[luckily as white plays first the inside group loses the race] (;B[gr]BL[1244.631] ;W[hs]WL[1046.65] ;B[gq]BL[1205.773] ;W[kr]WL[996.829] ;B[jr]BL[1175.609] ;W[lq]WL[988.547]C[not the sequence I expected, this is better for white as now the 3-3 invasion isn't as severe] ;B[qq]BL[1153.707] ;W[qp]WL[978.838] ;B[rp]BL[1151.911] ;W[ro]WL[976.116] ;B[rr]BL[1126.185] (;W[sp]WL[964.393] ;B[sq]BL[1123.98] ;W[rq]WL[962.688] ;B[gs]BL[1099.444] ;W[js]WL[943.205] ;B[rp]BL[1096.773] ;W[oa]WL[941.002] ;B[pb]BL[1090.383] ;W[rq]WL[939.764] ;B[nk]BL[1064.502] ;W[nl]WL[927.747] ;B[rp]BL[1062.374] ;W[qf]WL[926.24] ;B[rf]BL[1054.778] ;W[rq]WL[923.744] ;B[ok]BL[1038.832] ;W[ol]WL[919.691] ;B[rp]BL[1037.341] ;W[qh]WL[911.214] ;B[qg]BL[990.769] ;W[rq]WL[908.033] ;B[dl]BL[968.205]C[A bad ko threat as it removes the invasion aji for later] ;W[cl]WL[886.062] ;B[rp]BL[965.872] ;W[rn]WL[874.911]LB[cl:B][dl:A]C[after the exchange of A for B I thought it was good enough to let black live and take sente] ;B[so]BL[955.327]C[However after black takes I thought I had to defend again, although in hindsight I don't] (;W[qm]WL[854.038] ;B[cm]BL[917.208] ;W[dm]WL[850.165] ;B[ck]BL[915.489] ;W[bl]WL[848.985] ;B[dk]BL[910.42] ;W[bk]WL[846.55]C[not sure of teh point of this exchange] ;B[id]BL[865.847] ;W[db]WL[801.189]C[I probed to see how to respond to J16. If black gives me the corner I take it, otherwise I try to push J16 towards my wall and am satisfied with reducing the corner or having an extra few stones for free] (;B[cc]BL[850.126] ;W[hf]WL[794.459]C[Now black's corner needs and extra move for the points, I was hoping to get sente out of attacking J16 to reduce it further ] ;B[gd]BL[808.583] ;W[hd]WL[790.958] ;B[he]BL[788.347] ;W[hc]WL[756.034] ;B[ie]BL[779.231] ;W[ge]WL[698.177] ;B[fd]BL[775.783] (;W[if]WL[695.698] ;B[gf]BL[710.279] ;W[fe]WL[686.257] ;B[fc]BL[683.502] ;W[ic]WL[669.2] ;B[jf]BL[655.623] ;W[je]WL[650.492] ;B[jd]BL[652.258] ;W[ke]WL[649.529] ;B[jc]BL[598.565] ;W[jb]WL[627.962] ;B[ff]BL[592.707] ;W[ee]WL[523.542] ;B[ig]BL[588.877]C[whoops, hadn't seen this ladder and it works for black...] ;W[dj]WL[505.401] ;B[hg]BL[559.026] ;W[fm]WL[446.891] ;B[ik]BL[514.408] ;W[fb]WL[420.882] ;B[eb]BL[489.737] ;W[ea]WL[414.344] ;B[ec]BL[486.321] ;W[hb]WL[404.252]C[At this point I think the game is fairly even, although maybe I prefere black slightly A move around G9 is a necessity for black but it didn't happen, I think this is where the game swung in my favour] (;B[cg]BL[459.46]TR[ee][fe][ge]C[very slow as the marked stones are likely dead already] ;W[hk]WL[356.033]LB[jk:A]C[a huge move, black will have to connect at A] ;B[hj]BL[446.279] ;W[gk]WL[350.656] ;B[fl]BL[442.678] ;W[em]WL[349.373] ;B[gi]BL[350.033]C[a huge and unfortunate mistake, black has a tough job now] ;W[il]WL[324.628] ;B[jl]BL[331.361] ;W[jk]WL[321.706] ;B[ij]BL[328.289] ;W[fk]WL[318.27] ;B[cb]BL[315.564] ;W[qi]WL[277.405]C[I can't believe I misread this but the two white stones are now dead...] ;B[rj]BL[311.251]C[yup, what a silly mistake] ;W[oj]WL[208.194]LB[kc:D][bi:C][br:B][pr:A]C[very small endgame, any of A, B, C, D etc would be better] ;B[nj]BL[254.998]C[For some reason black responds? Before trying to save these stones the score is approximately 20 points to white, perhaps give or take 5 depending on how strong each of us was at endgame.] (;W[ni]WL[200.595] ;B[mj]BL[252.525] ;W[nh]WL[198.458] ;B[oh]BL[237.909] ;W[lj]WL[195.358] ;B[mi]BL[232.607] ;W[mh]WL[52.381] ;B[li]BL[229.688] ;W[kh]WL[51.123]C[this turns into a ko that I shouldn't need to win, it's unecessarily dangerous and I should win comfortaby with just good endgame] ;B[kj]BL[213.442] ;W[jj]WL[36.888] (;B[lk]BL[197.861] ;W[ki]WL[16.934] (;B[lh]BL[157.431] ;W[lg]WL[0.427] ;B[ml]BL[154.977] ;W[lj]WL[30]OW[5] ;B[kb]BL[87.128] ;W[kc]WL[30]OW[5] ;B[kj]BL[83.256] ;W[mg]WL[30]OW[5] ;B[ji]BL[72.846] ;W[lj]WL[30]OW[5] ;B[ja]BL[67.448] ;W[ib]WL[30]OW[5] ;B[kj]BL[64.395] ;W[kl]WL[30]OW[5] ;B[kg]BL[35.802] ;W[lj]WL[30]OW[5] ;B[ga]BL[20.955] ;W[lb]WL[30]OW[5] ;B[kj]BL[17.53] ;W[jh]WL[30]OW[5] ;B[ii]BL[10.928] ;W[lj]WL[30]OW[5] ;B[ka]BL[0.205] ;W[la]WL[30]OW[5] ;B[kj]BL[30]OB[5] ;W[pr]WL[30]OW[4] ;B[ih]BL[30]OB[5] ;W[lj]WL[30]OW[4]C[luckily it was a two step ko and black resigned here, I can't see any big enough ko threats. ] (;B[aa]) (;B[is] ;W[mk] ;B[ks] ;W[km] ;B[gp] ;W[jn]C[J1 doesn't work])) (;B[ml] ;W[lh] ;B[mm] ;W[ll])) (;B[ki] ;W[ji] ;B[lk] ;W[ml])) (;W[md]C[KGS score est thinks these white stones are dead? wat])) (;B[gk] ;W[md])) (;W[gf] ;B[ic] ;W[fc] ;B[ed] ;W[eb] ;B[jg]C[not really good enough])) (;B[ec] ;W[cc] ;B[cd] ;W[bc] ;B[eb] ;W[ca] ;B[bd] ;W[bb] ;B[he]C[I would be happy with this]) (;B[cb] ;W[cc] ;B[bc] ;W[ec] ;B[dd] ;W[hf]C[black has a tougher time with J16 now]) (;B[eb] ;W[ec] ;B[cb] ;W[dd] ;B[cc] ;W[fb] ;B[da] ;W[hf])) (;W[ge] (;B[rm] (;W[qm] ;B[qo]) (;W[qo] ;B[sn] ;W[qm]C[Looks like I could take sente after all!])) (;B[qo] ;W[rm]))) (;W[rn] ;B[sq]C[meight be better for me to just play like this and take sente])) (;B[lq] ;W[ms] ;B[kr] ;W[ls] ;B[js] ;W[hs] (;B[gq] ;W[ns] (;B[ks] (;W[gr] (;B[is] ;AE[gr][is][ks]) (;AE[gr][ks])) (;AE[ks]) (;AE[ks])) (;B[gr] (;W[is] ;B[gs] ;W[ks]C[ko?]) (;W[ks] ;B[gs] ;W[iq]C[not ko... white just wins this race]))) (;B[qq] ;W[qp] ;B[rp] ;W[ro] ;B[rq] ;W[qo] ;B[pr]))) (;B[gr] ;W[il]C[white wins the caputring race here, so black has to save the outside group])) (;W[il] ;B[hp] ;W[gp] ;B[gq] ;W[hp] ;B[gr]C[can't win the capture so I have to remove the throw-in])) (;W[no] ;B[nq] ;W[oq] (;B[pr]) (;B[or] ;W[pr] ;B[ns] ;W[hn]C[another possibility?]))) (;W[ln] ;B[oq] ;W[op] ;B[qq] ;W[qp] ;B[pq] ;W[hn]C[White has substantial centre territory and thickness, even playing passively and giving up the corner])) (;B[pk] ;W[qk] ;B[qi] ;W[ol] ;B[oj] ;W[mn]TR[qq]C[tricky fight])) (;W[ol] ;B[mm]C[I didn't like the look of this, so I attached at Q10 to try and get out quicker])) (;B[pk]C[the variation I expected] ;W[qk] (;B[qj]) (;B[pj] ;W[pl] ;B[ol] ;W[qj] ;B[pi] ;W[rh]TR[qc][rc][pf][jq][kq][lq]C[Fairly certain white can live here, especially with the aji of the marked stones, however black's thick ness will be very good and an invasion on the bottom looks promising]))) (;B[cr] ;W[go] ;B[en] ;W[dm]C[A possible continuation])) (;W[cm] ;B[dn] ;W[cn] ;B[cq] ;W[bq] ;B[dp] ;W[co] ;B[cr]TR[dn]C[Another variation of this joseki, compare this with the in game variation - white is on the fourth line and black doesn't have the marked stone to help move into the centre])) (;B[md] ;W[ld] ;B[mf] ;W[nf] ;B[le] ;W[qf] ;B[je] ;W[jc]C[perhaps?])) (;B[md] ;W[oa] ;B[pb] ;W[rb] ;B[pe]TR[cp]C[not good for black])) (;W[qe] ;B[mb] ;W[ne] ;B[md]C[Doesn't seem bad for white, especially with sente but black seems to have good thickness on the top for not much white profit on the right side])) (;B[nb]C[Black can also atari from the underside, how this then developes depends on the ladder] ;W[qe] (;B[rd] ;W[nd] ;B[pb] ;W[md] ;B[lc] ;W[re] ;B[rc] ;W[qj]) (;B[nd] ;W[rd]TR[id]C[Apparenetly this has been played in pro games but is locally considered better for white, in this particular case black feels happy with sente to play on the top side I think])))