(;GM[1]FF[4] CA[UTF-8] AP[Quarry:0.2.0] SZ[19] ST[2] PC[The KGS Go Server at http://www.gokgs.com/] DT[2020-11-16] RU[Japanese] KM[0.0] TM[1800.0] OT[30x600 byo-yomi] PB[JoeCasey] PW[thirdfogie] WR[2d] RE[W+1.0] C[White leads by 6.3 points.];B[qd]C[thirdfogie 2d: Hi. My watchwords \ for today are rationality and flexibility. As opposed to aggression \ and obstinacy. Enjoy the games.] BL[1788.66];W[dp]C[JoeCasey -: Sounds like a good plan]WL[1748.21] ;B[pp]BL[1761.93];W[dd]WL[1745.06];B[od]BL[1757.83];W[nq] WL[1739.86];B[pn]BL[1746.72];W[pq]C[Slightly better at 'a' or 'b'. I \ wanted to keep things simple.] WL[1710.48]LB[oo:b][fq:a] ;B[pk]C['a' is 4 points better,]BL[1711.64]LB[qq:a];W[qp] C[Correct. Black leads by 1.7 points.]WL[1699.53];B[op]BL[1691.19];W[qq] C[1 point better at 'a'.]WL[1674.61]LB[oq:a];B[oq]C['a' is slightly \ better.] BL[1682.63]LB[fc:a];W[or]WL[1672.46];B[qo]C['a'.]BL[1680.15] LB[fc:a];W[kq]C[3 points better at 'a'. I should learn this.] WL[1623.54]LB[np:a];B[np]C[And this is the reason why the squared \ movewas bad.] BL[1668.86]SQ[kq];W[mq]WL[1621.85];B[ic]C[Better at black 'a', even \ though 'a' does not capture anything, and white is not going to use a \ move to defend there. Katago may think that black 'a' followed by white 'b' somehow inhibits \ white's potential invasion beginning with white 'c' followed by white \ 'd' and black 'e', but none of that was on my radar.] BL[1664.55]SQ[qp][pq:qq] LB[pi:d][rk:e][qm:c][nr:a][pr:b] (;W[cn]C[Very slightly better at 'a'. See variation by Katago. Black leads by 3.4.]WL[1605.24]LB[qm:a][ro:c][nr:b] ;B[cf]C[Correct.]BL[1654.51];W[ch]C[Very slightly better at 'a' or 'b'.\ Perhaps 'a' is good because it helps an invasion at the top later.] WL[1586.65]LB[fc:a][qm:b] ;B[ef]C['a'!]BL[1646.57]LB[nr:a];W[fc]C[Correct.]WL[1584.55] ;B[gf]C[Too simple? 'a', 'b' and 'c' are better.]BL[1618.6] LB[bd:b][gd:c][nr:a] ;W[dk]C[Katago would not tell me what I should have played here. \ Leelarecommends 'a'.] WL[1566.5]LB[bd:a];B[le]C['a' is 2 points better. I would have played \ 'b'.] BL[1607.35]LB[ie:b][nr:a] ;W[qe]C['a', 'b', 'c' and 'd' are all better. (I considered 'b' and \ managed to play 'c' a bit later.)] WL[1518.35]LB[qc:b][bd:d][hd:c][qm:a] ;B[pe]C[Correct.]BL[1591.9];W[qf]WL[1502.58];B[pg]C['a' is usual.] BL[1578.08]LB[rd:a];W[qg]C[Should play 'a' immediately, given that \ Black did not play there.] WL[1491.37]LB[rd:a];B[ph]C['a' or 'b'.]BL[1575.39]LB[rd:b] [nr:a] ;W[rd]C[Correct.]WL[1488.69];B[qc]BL[1569.62];W[rj]C[Good. 'a' is 0.2 \ points better.] WL[1469.75]LB[rc:a];B[qj]C['a' is equally good.]BL[1546.92] LB[rc:a];W[qh]C[1 point better at 'a'. The move played offered Black \ the chance to reply at 'b', which is complex but better for Black.] WL[1447.99]LB[qi:a][ri:b] ;B[qi]C[2 points better at 'a'.]BL[1534.46]LB[ri:a];W[ri] C[White leads by 2 points. The invasion was good for White, though \ Black's centre looked ominous to me.] WL[1445.13];B[rk]C[Good. Black can also play 'a' before this move. \ Presumably the aji on the lower right side is different now. The idea may be that black 'a' followed by white 'b' makes black 'c' \ sente later.] BL[1530.44]LB[lp:c][pr:a][qr:b] ;W[rc]C[Correct. I wasn't sure if this move was needed for life, but \ it was clearly worth points.] WL[1440.31];B[rb]C[Katago recomends black 'a', white 'b' and black 'c'.\ That surprising sequence is 1 point better for Black.] BL[1522.99]LB[dc:b][ed:a][pr:c] ;W[hd]C["The flying saucer is dead", but White's group on the right \ side is two points longer than the flying saucer, so I felt it was safe\ to tenuki. Katago likes this move.] WL[1423.23];B[gc]C[Katago recommends 'a', followed by white 'b', black \ 'c' and white 'd'.] BL[1438.28]LB[ec:b][hc:c][ed:a][gd:d] ;W[hc]C[0.6 points better at 'a'. A lesson from the two games today is\ that playing solidly on the outside (as at 'a') is often better than \ diving into unfathomable complications.] WL[1373.0]LB[gd:a];B[gd]C[8 points better at 'a'. White G16 and black \ 'b' would follow.] BL[1434.0]LB[gb:a][hb:b] ;W[gb]C[Correct. The triangled stone is now very weak.]WL[1370.02] TR[ic];B[fd]BL[1429.89];W[ec]WL[1354.78];B[he]C[2.5 points better at \ 'a'! The move played further weakens the triangled stone.] BL[1387.66]TR[ic]LB[em:a];W[id]C[Correct.]WL[1343.13];B[jc] C['a'.]BL[1378.57]LB[em:a];W[jd]C[Obvious.]WL[1334.66];B[kd] BL[1373.46];W[kc]C[Not bad. 'a' is simpler.]WL[1329.46]LB[ib:a] ;B[kb]C[Should be at 'a'!]BL[1367.21]LB[lc:a];W[lc]C[Correct, and \ therefore not stubborn.] WL[1326.9];B[lb]BL[1361.76];W[ib]C['a' is better. The purpose of the \ doomed white stones at the top is to help White jump out at 'a'. Since\ I didn't know that, I was being stubborn after all.] WL[1313.8]LB[mc:a];B[jb]BL[1357.78];W[mc]C[Correct.]WL[1273.87] ;B[mb]C[thirdfogie 2d: Could be obstinacy. Not clear. Black's play is correct.]BL[1345.94];W[jf]C[Correct.]WL[1245.19] ;B[je]C[thirdfogie 2d: Yep. It was obstinate. Black 'a' is 6 points better. Black should grab the points and some \ eye-shape.] BL[1340.49]LB[bd:a];W[ie]WL[1233.3];B[ke]BL[1334.64];W[hf] C[Correct.]WL[1223.15];B[bd]C[Correct.]BL[1326.9] (;W[cc]C[White should play at 'b'. Black can capture that stone, but \ White can then play 'd' followed by 'c', which cuts off the triangled \ stones. Black could defend at 'd' instead, alllowing White to pull back\ at 'e'. The move at 'b' is worth remembering, but I probably won't. I added \ some variations to help with learning. White leads by 25 points. I thought Black was ahead.] WL[1203.2]CR[bd][cf] TR[fd:gd][he][ef][gf] LB[ce:d][bf:b][df:c][bg:e] ;B[bc]BL[1313.43];W[bb]C[White 'a' is still best. There is also a kind of double-sente situation lurking in the top \ right, where black 'b' or white 'c' should be played whenever there is \ no fighting elsewhere.] WL[1195.76]LB[sb:c][sc:b][bf:a] ;B[cd]C[Correct.]BL[1309.93];W[dc]C[1 point better at 'a'. I had been \ thinking about 'a' for some time. 'b' is best. Locally, 'c' is slightly better than the move played.] WL[1180.08]LB[cb:c][ne:b][eq:a] ;B[de]C[2 points better at 'a'.]BL[1306.52]LB[eh:a];W[ge] C[Not bad, but 'a', 'b' and 'c' are all slightly better.] WL[1168.03]LB[ne:b][gg:c][eq:a] ;B[fe]C[Small, because the 3 marked stones are not cutting stones. \ White would not use two moves in a row to capture three stones at this \ stage of the game.] BL[1298.75]TR[gc][fd:gd] ;W[bg]C[I played this to prevent an invasion on the left side, but it \ does not really do that once Black answers. 'a' is 3 points better.] WL[1141.48]LB[gg:a];B[bf]C[3 points better at 'a'.]BL[1287.63] LB[gg:a];W[lo]C[1 point better at 'a' or 'b'. I aimed to reduce \ Black's centre. White leads by 24.6.] WL[1095.49]LB[ne:b][fq:a] ;B[ik]C[Better at 'a'.]BL[1268.25]LB[fq:a];W[lk]C[4 points better at \ 'a'. We were both guessing around here.] WL[1080.63]LB[gg:a];B[dh]C[Strengthens White.]BL[1263.57] ;W[ci]C[4 points better at 'a'!]WL[1075.38]LB[di:a];B[fq] BL[1255.24];W[eq]C[The footsweep at 'a' is better in this case. Don't \ know why.] WL[1068.15]LB[er:a];B[fp]BL[1252.25];W[hp]C[1.2 points better at 'a'. \ That makes sense because it is easier for White to make territory on \ the left side than at the bottom. At least H16 was better than white 'b', which was my other candidate \ move.] WL[1056.19]LB[fn:a][hq:b] ;B[fn]BL[1241.01];W[hm]C['a' is very slightly better. I was now trying\ to build territory in the triangled area. This attempt was not very \ fruitful. White leads by 21.] WL[1041.44]TR[in:kp][iq:jq][lp:lq] LB[hn:a];B[fl]C[Black can play 'a' first. White 'b' and black 'c' \ follow. It is an attack often played against me by marmoset.] BL[1232.32]LB[co:b][do:a][cq:c] ;W[lg]C[2 points better at 'a', probably because it prevents the \ "marmoset attack".] WL[1017.6]LB[em:a];B[gg]C[The marmoset attack at 'a' is 5 points better.] BL[1226.35]LB[do:a];W[lf]C[5 points better at 'a'. Maybe the game move\ is aji-keshi. It was intended to discourage black 'b' next.] WL[980.753]LB[nc:a][kf:b] ;B[me]C[Correct, and black 'a' is still possible.]BL[1222.58] LB[kf:a];W[fj]C[4 points better at 'a' to prevent the "marmoset attack".] WL[963.802]LB[em:a];B[gk]C['a'.]BL[1194.96]LB[do:a];W[jl] C[4.5 points better at 'a'.]WL[927.433]LB[em:a];B[kf]C['a' or 'b' is \ slightly better. Katago cannot decide between them.] BL[1185.07]LB[cm:a][do:b] ;W[kg]C['a'. White leads by 15.]WL[900.82]LB[em:a];B[cm]C[Correct.]BL[1180.53] ;W[dm]C[If Black had lived, White planned to push through at 'a' or \ wedge in at 'b' (or something) for compensation. Anyway, Katago likes this move.] WL[878.931]LB[gl:b][fm:a] ;B[dn]C[Correct. The reply needed thought.]BL[1173.53] (;W[co]C[But this is wrong. See variation, which would have enabled \ the push-through at 'a'.] WL[850.124]LB[fm:a];B[dl]C[Correct.]BL[1169.55];W[em]C[Correct.] WL[846.6];B[ck]C[The losing move. Black should play 'a'. I expected \ 'a'.] BL[1154.7]LB[el:a];W[el]WL[840.551];B[cl]C[It seems unlikely that the \ three black stones will live. After forcing moves at 'a' and 'b', Katago thinks that black 'c' is 5 \ points better.] BL[1127.37]LB[sc:b][hq:c][nr:a] ;W[dj]C[10 points better at 'a'. I wanted to keep the triangled stones\ dead, but did not see that is bigger to kill the circled stones first. White leads by 25.4.] WL[806.191]CR[dn][fn][fp:fq] TR[dl][ck:cm] LB[fm:a];B[en]C[4.5 points better at 'a'.]BL[1113.4]LB[ek:a] ;W[fk]C['a' is clearly better, to preserve the aji at 'b'.] WL[784.59]LB[ek:a][fm:b] ;B[fm]C[Slightly better to throw in at 'a' first to damage the White's \ shape.] BL[1106.55]LB[ek:a];W[ek]WL[781.075];B[hl]C[Correct, preventing the \ wedge at 'a'.] BL[1100.89]LB[gl:a];W[bm]C[Better at 'a', since the black stones on the\ left cannot live. Still, it was reasonable to play safe at this point.] WL[748.487]LB[fr:a];B[er]C['a' is better. The move played lets Black \ strengthen his corner.] BL[1052.73]LB[jg:a];W[dr]C[Correct.]WL[739.944];B[ep]BL[1050.65] ;W[dq]C[White leads by 21. I thought Black was ahead. Somehow, the 3 \ dead squared stones outweighed the 4 dead triangled stones in my mind.] WL[736.061]SQ[kc:mc] TR[dl][ck:cm] ;B[jg]C[Correct.]BL[1025.04];W[if]WL[732.353];B[jh]BL[1019.21] ;W[li]C[2 points better to play at 'a' first. The reason becomes clear\ later.] WL[729.179]LB[nf:a];B[hn]C[Better at 'a'.]BL[1002.52]LB[kj:a] ;W[im]C[Natural, since White does not want the black group to live \ easily. White should really patch up the weakness around 'a'.] WL[695.58]LB[kj:a];B[gm]C[Better at 'a'.]BL[992.913]LB[kj:a] ;W[in]C[Better at 'a'. I was still trying to make territory around the\ triangled point.] WL[678.609]TR[jo]LB[jk:a];B[ho]BL[981.308];W[io]WL[675.83] ;B[jk]C[Katago thinks Black should force at 'a', 'b', 'c' and 'd', then\ play 'e'. From now on, comments will ignore these four forcing moves.] BL[960.413]LB[ab:d][sb:c][sc:a][sj:b][hq:e] ;W[kl]WL[671.604];B[lj]C[This was surprisingly good, given that Black \ has few very close stones.] BL[950.536];W[mj]C[White should force at 'a' first. If Black ignores \ 'a' and pushes through at N10, White pushes through at 'b' and a \ complex exchange follows.] WL[663.017]LB[nf:a][pf:b] ;B[kj]BL[947.367];W[mk]C['a' and 'b' are better. I considered 'a' but \ was blind to 'b'.] WL[581.818]LB[nf:b][nk:a] ;B[mi]C[Correct.]BL[943.476];W[ni]C[Correct. White can afford to \ sacrifice the four squared stones while laying waste to what was once \ Black's area around the triangled point.] WL[579.709]SQ[lf][kg:lg][li] TR[ng];B[mh]BL[939.813];W[ng]C[A misread. 13 points better at 'a'. White leads by 18.]WL[578.707]LB[nh:a];B[nh]BL[931.902];W[pf] C[Correct.]WL[576.608];B[of]BL[918.386] (;W[oi]C[See variation, which is better for White but complex and \ therefore risky. Incidentally, Leela Zero's advice differs from Katago's here.] WL[560.162];B[oh]C[Correct.]BL[906.129];W[nm]C['a' is better because it\ threatens to break into the right side.] WL[544.617]LB[om:a];B[ol]BL[849.757];W[om]C[The escape beginning at \ 'a'is still available.] WL[538.798]LB[nf:a];B[pm]BL[815.144];W[nl]C[White is 9.5 points ahead, \ but only if Black plays 'a' next.] WL[529.05]LB[sc:a];B[ro]C[Good, but 'a' is 1 point better.] BL[804.68]LB[gr:a];W[rp]WL[488.585];B[hq]C[Both sides continue to \ ignore the forcing moves mentioned before and White's possible \ trouble-making at 'a'.] BL[800.153]LB[nd:a];W[iq]WL[486.654];B[gp]BL[796.352];W[ir] WL[475.686];B[ip]BL[793.627];W[jp]WL[473.586];B[hr]C[Gote, and does not\ make many points. Black could have played 'a' in sente.] BL[789.496]LB[ok:a];W[sk]C[4 points better at 'a', but the ensuing \ variations are complex.] WL[459.468]LB[nd:a];B[sl]BL[786.623];W[mo]C[Ooops. White cannot \ connect at 'a'. White ''b' would have been 5 points better.] WL[439.491]LB[sb:b][sj:a] ;B[sc]C[0.5 points better at 'a'.]BL[780.454]LB[sb:a];W[se] WL[433.323];B[sj]BL[778.035];W[sh]WL[426.875];B[bl]C[Odd, but only \ loses 0.5 points compared to black 'a'.] BL[770.451]LB[sb:a];W[bn]C[Correct.]WL[423.042];B[bi]C[Better at 'a'. \ White can still capture, the black stones, but would have to work \ harder.] BL[766.442]LB[bj:a];W[bh]C[Better at 'a'. Black cannot connect under \ and the white stones get an eye. White leads by 10 points.] WL[411.273]LB[bj:a];B[di]C[Better at 'a' to make it harder for White \ tocapture.] BL[759.405]LB[bj:a];W[bj]C[2 points better at 'a'. I thought hard \ about this during play, and still don't understand why B10 is wrong.] WL[396.407]LB[cj:a];B[gi]BL[755.506];W[gj]WL[391.234];B[hj] C[Correct.]BL[752.725];W[fi]WL[352.942];B[fh]BL[748.845] ;W[fr]C['a' is 1 point better.]WL[269.925]LB[ok:a];B[is]C[This is OK, \ since White answers.] BL[744.492];W[js]C[White's lead is down to 6 points.]WL[246.772] ;B[hs]BL[741.966];W[kr]C['a' is now an important point.]WL[239.618] LB[sb:a];B[ab]BL[739.777];W[ba]WL[233.654];B[oj]C[Slightly better at \ 'a'.] BL[731.269]LB[ok:a];W[nj]C[Better at 'a'. Black's resulting shortage \ of liberties in the corner is well-known, but was not on my radar at \ the time.] WL[229.738]LB[sb:a];B[ei]C[Good. The white stones would have lived \ independently with more territory if White had got this point first.] BL[703.661];W[cj]C[Correct.]WL[219.681];B[sb]C[At last. Black is \ playing better and catching up to white.] BL[693.54];W[rg]C[Correct. White leads by 8 points.]WL[203.865];B[sd]BL[667.045];W[re] WL[199.733];B[gr]C['a' is also possible.]BL[651.717]LB[pi:a] ;W[es]C[3 points better at 'a'.]WL[196.91]LB[pi:a];B[hg]C['a'.] BL[630.085]LB[pi:a];W[ig]C['a'.]WL[185.47]LB[pi:a];B[ih]C[Correct.] BL[626.936];W[pb]C[Does not work and 5 points worse than 'a'. I still \ thought White was behind.] WL[145.971]LB[pi:a];B[qb]BL[617.917];W[nc]C['a'. White is 9 points ahead.]WL[136.796]LB[pi:a];B[nb]BL[607.566] ;W[pc]C['a'.]WL[103.395]LB[pi:a];B[oc]BL[582.512];W[hb]C[Still better \ at 'a'.] WL[70.479]LB[pi:a];B[nn]C['a'.]BL[571.297]LB[pi:a];W[no]C[I thought \ hard about the choice between this move and 'a'. 'a' is 2 points \ better.] WL[47.565]LB[on:a];B[on]BL[567.678];W[mn]C[Correct.]WL[39.239] ;B[oo]C['a'.]BL[565.71]LB[pi:a];W[cg]C['a' is better. White leads by 5,2,]WL[2.829]LB[so:a];B[dg]BL[562.774];W[ee] C[thirdfogie 2d: Madness! JoeCasey -: misclick? thirdfogie 2d: No, misthought. Loses 2 points.]WL[600.0]OW[30];B[ed]BL[520.511];W[so]C[Correct.] WL[600.0]OW[30];B[sn]BL[516.648];W[sp]WL[600.0]OW[30];B[pi] C[At last.]BL[509.086];W[ql]C[Loses another 1.5 points. The ko at 'a' \ is better. (White has local threats.)] WL[600.0]OW[30]LB[ok:a];B[pl]BL[478.386];W[do]C['a' is better. Only \ small moves are left now.] WL[600.0]OW[30]LB[ia:a];B[eo]BL[473.055];W[ag]WL[600.0]OW[30] ;B[sk]BL[429.037];W[si]WL[600.0]OW[30];B[ia]C[Gets there first. 'a' is\ equally good.] BL[413.15]LB[fs:a];W[ha]C[Correct.]WL[600.0]OW[30];B[ja]BL[406.706] ;W[fa]C[Not yet necessary. 'a' and 'b' are 0.5 points better.] WL[600.0]OW[30]LB[af:a][mp:b] ;B[af]BL[394.365];W[rn]C[Does not work, but at least costs nothing. White leads by 1 point.]WL[600.0]OW[30];B[sm]BL[368.308] ;W[qn]WL[600.0]OW[30];B[po]BL[346.533];W[nk]C[Should play 'a'.] WL[600.0]OW[30]LB[mp:a];B[ok]C[Misses a chance to play at 'a' in sente.] BL[272.645]LB[mp:a];W[kk]C[Still cannot see 'a'.]WL[600.0] OW[30]LB[mp:a];B[hp]C[0.5 points better at 'a'. It seems that Katago \ counts 0.5 points for what is commonly called a "half-point ko". The \ correct value should depend on who has most ko threats.] BL[259.809]LB[mp:a];W[hi]C[Another distraction. Just play 'a' already!] WL[600.0]OW[30]LB[mp:a];B[gh]BL[253.176];W[il]WL[600.0]OW[30] ;B[ii]C['a' is clearer. Katago thinks 'a' is 0.2 points better, but \ surely she could calculate the exact score at this stage of the game.] BL[221.832]LB[jj:a];W[fs]C['a'. Katago says that White leads by 0.3 \ points.] WL[600.0]OW[30]LB[mp:a];B[ac]C[Dame. Black's final losing move. 'a' is\ better.] BL[216.788]LB[mp:a];W[he]C['a' is "better", but it does not matter now.] WL[600.0]OW[30]LB[mp:a];B[aa]BL[204.578];W[cb]WL[600.0]OW[30] ;B[mp]C[At last!]BL[202.244];W[lp]WL[600.0]OW[30];B[ej]BL[174.721] ;W[gs]WL[600.0]OW[30];BL[174.72];C[JoeCasey -: Nice game, fair result. thirdfogie 2d: Lucky, lucky, lucky. Another? JoeCasey -: Another]WL[600.0]OW[30]TB[ka:sa][ob:pb][kc:nc] [ld:nd][pc:pd][ad:ae][be:ce][ee][ne:oe][df][ff][lf:nf][eg:fg] [kg:og][eh][kh:lh][hh:hi][ji:li][ij:jj][pj][hk][gl][gn][qk:qn] [rl:rn][fo:go][gq] TW[ca:ea][ga][db:fb][rf:sf][sg][rh][bi][bk:cl][dl][ll:ml] [cm][jm:mm][jn:ln][jo:ko][kp][rq:sq][er][jq:jr][lq:lr][mr:nr] [pr:sr][ah:as][bo:bs][cp:cs][ds][ks:ss] ) (;W[nf]C[Variations by Katago. Not all possibilities are shown. Leela Zero does not like O14, and instead wants to play at 'a' or 'b' \ or even the game move at P11. When Leela is shown O14, she then plays black 'c' and white 'd' but \ still does not follow up to try to save the squared white stones.] SQ[lf][kg:lg][nf:ng][li] LB[sb:a][oe:c][rg:b][oh:d] (;B[ne]C[11 points worse than P15.];W[og] (;B[oe];W[oh];B[pi];W[ki]C[White leads by 33.]) (;B[oh];W[oe]C[This ko is bad for Black because White could resolve it \ by capturing at 'a' which threatens further damage to the black \ territory at the top right. White leads by 30.] LB[pd:a])) (;B[oe]C[Black's stiffest resistance.];W[oh];B[og];W[ki] ;B[oi];W[ji];B[hh]C[This escape works, but is too difficult for me to \ have seen. White leads by 24.5.] ;W[hj];B[gj];W[gi];B[hi];W[ij];B[hk];W[ih]C[Black's remaining moves are\ only shown for clarity.] ;B[ig];W[hg];B[ii];W[jj];B[kk];W[kh]))) (;W[en];B[do];W[eo];B[co];W[cp];B[bo];W[em];B[ep];W[bp];B[bn] ;W[er];B[cr];W[br];B[bs];W[bq];B[ck];W[fm]C[A capturing race follows \ between the triangled and squared stones. I don't feel bad about not playing this way.] SQ[bp:dp][bq:br][eq:er] TR[fn][ep:fp][fq] )) (;W[bf]C[Black can respond to this move in various ways. All the \ plausible results were reviewed with Katago.] (;B[bg] (;W[ce] (;B[be];W[df];B[af];W[dg]C[White leads by 25.5 points. This is simpler\ than allowing the ko that would follow white 'a' instead of D13.] LB[cg:a]) (;B[cg];W[be]C[White keeps a big corner and leads by 29 points.])) (;W[cg]C[Also possible.] (;B[ce];W[bh]C[White leads by 28 points.]) (;B[be];W[df];B[af];W[ce]C[The same result as one of the other lines.]) (;B[af]C[Katago prefers this surprising move.];W[df] (;B[be];W[ce]C[White leads by about 26 points. A ko fight may follow \ black 'a'. Katago thinks this is the best variation for both.] LB[dg:a]) (;B[ce];W[de]C[White leads by 28 points.])))) (;B[be]C[Worse for Black.];W[bg];B[de];W[cd];B[ce];W[bc] ;B[bb]C[A surprise from Katago.];W[ac];B[ed];W[cc]C[White leads by 30 \ points.] ))) (;W[qm];B[ro];W[pi];B[rk];W[fc];B[cq]C[It is unlikely that we would \ ever play like this, skipping nonchalantly around the board.] ) )