This is a moyo game I played earlier. The result was rather surprising for me, because I fully expected to lose against this 6 kyu on OGS. (5.5 and once ranked 1.8 kyu!)
Story of the game as I see it (with Leela's help) is the following:
1. black wins the opening after winning the ko.
2. black builds a nice moyo, but instead of capitalising on it, he overplays (and underplays - gote small moves) in white's area and makes the game more even again.
3. black plays better endgame and wins the game.
During the game, I was more and more sure I was going to win, so it was a bit odd that Leela figured me as behind in the late middle-game, early-end game (move 150 or so)
I was sure I was ahead. But I tried to pay a lot of attention on sente in my endgame and I think it worked well.
The sgf is already with comments from my own after analysing with Leela, hoping for additional insights on bad plays or good plays!
The additional question (less important because it's purely for my ego) is how you would rate this game. Because usually online I don't think much, while I managed to stay focused on the game more or less during this game, read some things out etc. I'm curious how you'd judge my strength from this game record.
Time settings were 10 mins + 5x30 Byo-Yomi. Never used an excessive amount of time, but rarily played 1-2-3 second moves, neither.
Thank you!
EDIT: I am black, MeesterJonas, my school account.
Also I realise the variation of move 57, white 58 would be at K6, not self atari.
(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]
RU[Japanese]SZ[19]KM[6.50]TM[600]OT[5x30 byo-yomi]
PW[patricks]PB[MeesterJonas]WR[6k]BR[9k]DT[2018-12-19]CP[online-go.com]PC[OGS: https://online-go.com/game/15774888]C[MeesterJonas: have a fun game!
patricks: have a nice game
]RE[B+10.50]
;B[pd]C[patricks: have a nice game
]
;W[cp]
;B[pp]
;W[dc]
;B[ep]
;W[dn]LB[en:B][jp:D][cq:A][hq:C]C[Locally I considered A, B, C or D, but because I was undecided and didn't know what I needed yet, I decided to tenuki.]
;B[pj]C[Sanrensei.]
;W[nc]
;B[pf]
;W[qc]
;B[pc]
;W[qd]
;B[qe]
;W[pb]
;B[ob]
;W[qb]
;B[oc]
;W[re]
;B[rf]
;W[sd]
;B[jd]C[Now I have a lot of stones on the 4th line.]
;W[nq]
;B[qn]
;W[pr]
;B[qq]
;W[kq]
;B[en]LB[cq:A]TR[kq][nq][pr]C[Not the best way to help this stone. Leela says A.
However, my aim was to make some sort of leaning attack. Borrow some strength to then put pressure on the white group. Get in the middle with this stone.]
;W[dm]
;B[lp]LB[no:A]TR[hp][ip][hq][iq]C[I don't know if this is still consistent with my earlier strategy, but having helped that stone, I now decided to grow of this group.I was thinking white would play A soon, if I played anything near the marked area. I figures my 2 stones would be all right, and this is bigger.]
;W[lq]
;B[np]
;W[mp]
;B[mo]
;W[mq]
;B[hq]C[Now I play here.]
;W[jo]
;B[hn]C[Leela says unnecessary. I say peace of mind. But slow, perhaps. Didn't want to be boxed in with my black group.]
;W[mn]
;B[nn]
;W[op]
;B[oo]C[I'll go to ko.]
;W[no]
;B[sb]
;W[rb]
;B[np]
;W[nb]
;B[oq]C[Finish the ko and locally a great result. I'm very strong there, got thickness and starting to build a nice moyo.]
;W[oa]C[White connects, but I think I came out of this ko better.]
;B[nd]
;W[or]
;B[mm]LB[ln:A][lo:B]C[While A or B were first considered, I decided on this play because it helps develop my moyo better. White can have those two stones in exchange for influence.]
;W[ln]
;B[lm]
;W[md]
;B[ne]
;W[jm]LB[kn:A]C[A is a nice point, now. But only makes 6 points in gote, so not worth it now.]
(;B[mc]C[So I decide to be aggressive.]
;W[ld]
;B[mb]
;W[na]
;B[kc]
;W[lc]
;B[lb]
;W[kd]
(;B[je]LB[jb:A][jc:B]TR[lb][mb][mc]C[Again, locally a mistake. I was strongly debating between this move and simply play at A or B. But I decided to give up the marked stones for more wall.
In afterthought, this is a mistake. The white stones could run out into my moyo, but they'd be weak and on the run, I could attack them endlessly.
Well, perhaps not endlessly.]
;W[kb]
;B[jc]
;W[jb]
;B[le]C[Sacrifice.]
;W[la]
;B[ke]
;W[ma]
;B[de]LB[jl:A]C[I thought about increasing the moyo with a play around A. But I felt white could build something big of his own on the left side and I wanted to make sure that didn't happen.]
;W[fd]
;B[ck]LB[fe:C][ch:A][dh:B]C[Yes, this is somewhat overplay. though Leela likes it. I was fully aware this was stretching it, and A or B (or C?) would've been much safer.
But I wanted to take some risks here, not play the safe, safe game.]
(;W[ci]C[OF course. Has to.]
;B[ek]
;W[el]
;B[fl]LB[fk:A]C[next few moves are not so good. I was playing too "afraid". I should push up at A instead of this move.]
;W[dk]
;B[em]
;W[dl]
;B[gj]C[light shape.]
;W[jk]C[But all in all it wasn't the best exchange for me and I've given white quite a left side, while that was not necessary.]
;B[lj]
;W[lk]
;B[kl]
;W[km]
;B[jl]
;W[il]
;B[ll]
;W[lo]
;B[no]
;W[hm]
;B[in]
;W[jn]
;B[gm]
;W[gl]
;B[gk]
;W[im]
;B[kk]
;W[me]
;B[mf]
;W[ej]
;B[gh]
;W[jj]
;B[kj]
;W[ji]
;B[kh]
;W[ki]
;B[li]
;W[jh]
;B[kg]
;W[jg]
;B[ff]C[Sente to pull out this stone, or at least attempt to.]
;W[ef]
;B[ee]TR[de][ee]C[sacrifice these two as a reduction.]
;W[fe]
;B[eg]
;W[df]
;B[dg]
;W[cf]
;B[cg]
;W[ce]
;B[gf]
;W[if]
;B[dq]C[big!]
;W[cq]
;B[dr]
;W[cr]
;B[hl]C[funnily enough, I was now drawn to this move. It didn't look so big, but reviewing it with Leela shows she also picks out this move now. Very odd.]
;W[hk]
;B[gl]C[Though Leela doesn't connect in gote!]
;W[fk]
;B[fj]
;W[ei]
;B[fh]
;W[he]
;B[hc]
;W[gc]
;B[jr]C[kind of big.]
;W[kr]
;B[iq]
;W[ho]
;B[go]
;W[io]
;B[gn]
;W[jq]
;B[qr]C[kind of big.]
;W[hb]
;B[hd]
;W[ge]
;B[bg]
;W[bi]
;B[ad]
;W[bd]
;B[af]
;W[ac]
;B[cs]
;W[bs]
;B[ds]
;W[br]
;B[sf]
;W[dp]
;B[fq]
;W[eo]
;B[fo]
;W[hp]
;B[gp]
;W[hj]
;B[ae]
;W[bc]
;B[jf]
;W[hf]
;B[hg]
;W[gg]C[Is white trying to kill this? The black group is obviously alive.]
;B[fg]
;W[hh]
;B[hi]
;W[ih]
;B[ps]
;W[pq]
;B[op]
;W[ns]
;B[ir]
;W[ah]
;B[ip]
;W[jp]
;B[ib]
;W[ia]
;B[ic]
;W[ie]
;B[be]
;W[dd]
;B[bf]
;W[ed]
;B[ks]
;W[ls]
;B[js]
;W[ii]
;B[gi]
;W[os]
;B[qs]
;W[dh]
;B[bh]
;W[eh]
;B[gd]
;W[gb]
(;B[lg]LB[id:A]C[scared move. Check variation for my fear during the game.
It turns out my fear were justified, I'm sort of happy about that. My 'mistake' is that I could've waited one move. I didn't want A to be sente but to take gote now is the same result, but worse because there are other moves left on the field that are worth points.]
;W[do]
;B[ag]
;W[se]
;B[ai]
;W[aj]
;B[ah]
;W[bk]
;B[ek]
;W[fm]C[white wants to go to ko on this.]
;B[fn]
;W[fk]
;B[sc]
;W[rd]
;B[ek]
;W[nf]
;B[oe]C[now, though, I'm happy I played M13 earlier.]
;W[fk]
;B[gg]C[white can have the ko.]
;W[ig]C[but fills a dame instead...]
;B[ek]
;W[mg]
;B[lf]
;W[fk]
;B[ch]
;W[ek]
;B[]
;W[]C[MeesterJonas: thank you for the very nice match
patricks: thanks
])
(;B[aa]
;W[id]
;B[ba]
(;W[lf]C[other variation.]
;B[kf]
;W[lh])
(;W[nf]
(;B[oe]
;W[lf]
(;B[kf]
;W[mg]
;B[lh]
;W[nh])
(;B[mg]
;W[kf]))
(;B[lf]
;W[oe]))))
(;W[bm]
;B[ch]C[way too passive for white, game over.]))
(;B[jc]
;W[lf]
;B[mg]
;W[jf]))
(;B[kn]
;W[lo]
;B[ko]))