(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]
RU[Japanese]SZ[19]KM[6.50]
GN[Bo R2]PW[David Ulbricht]PB[Bernd Radmacher]WR[2d]BR[4d]RE[W+1.50]
;B[dp]
;W[pq]
;B[dd]
;W[qc]
;B[qo]
;W[qp]
;B[po]
;W[nq]
;B[qk]
;W[cc]
;B[dc]
;W[cd]
;B[cf]
;W[bf]
;B[bg]
;W[be]C[I don't like the variations after C15 (neither do I know them well enough, nor do I enjoy any joseki that lasts 40+ moves ^^), so I'm having none of that and just back off with B15 - it's not a bad move anyway!]
(;B[de]C[This one is a slight mistake though - ]
(;W[nd]C[Alternative: L17]
;B[ch]
;W[cq]
;B[cp]
;W[dq]
;B[eq]
;W[er]
;B[fr]
;W[fq]
;B[ep]
;W[gr]
;B[dr]
;W[fs]
;B[cr]
(;W[qi]C[First time I thought for a little bit.

Alternative is to still reduce the top side more, e.g. with L16]
;B[lc]
;W[qm]
;B[rm]
;W[rn]
(;B[pm]C[Mistake, instead S5 first]
(;W[qn]C[Also mistake, giving black the chance to play S5 again.
Also I have few libeties now, so black can abuse that to squeeze me a lot (see variations)

So instead I should first play R8 and then S5!]
(;B[pn]C[So you guessed it - this is a huge mistake!!!]
;W[ro]
;B[pl]C[I got a lot of profit in sente and that black group, while not weak at the moment, can still be a juicy target!

This position is good for white!]
(;W[fp]C[This is a really big point to get.
The goals of this move are:

a) Main goal is to reduce the black influence
b) It also makes sure that white group is very strong (even though it was not week, it can be pressed down if black were to play G5 after I played elsewhere)
c) it also grows white bottom area a bit, which can get larger by harassing the right side black group


Alternatively I can also play P11 or M15]
;B[le]
;W[bq]
;B[br]
;W[eo]
;B[bp]
(;W[gn]C[Similar goals like E4.

But this might be a slight mistake.
The E5 stone is not yet crucially important, so maybe better alternatives are

P11 again or
N6 or something similar - building the bottom further while putting pressure on that weak black group!]
;B[od]C[(This one was new to me ^^)]
;W[oc]
;B[pd]
;W[pc]
;B[ne]
(;W[nc]C[LZ prefers N17 here!]
(;B[of]TR[od][pd]C[Importance of stones:
The two marked black stones are not that important, so this move is a bit slow.
Instead black can be looser with a move like R13!]
;W[re]
;B[op]
;W[mr]
;B[lo]
(;W[md]C[Direction of play

Wrong direction.
I try to hard to make these weaknesses work directly, but I end up helping black fix his weaknesses instead.

So it is better to indirectly use these weakneses by reducing from the outside, forcing black to constantly worry about the possibility of a cut here.

This exchange also removes endgame aji like M18.]
;B[ld]
;W[me]
;B[mf]
;W[dg]
;B[dh]
;W[lf]
;B[mg]
(;W[lg]
;B[mh]
(;W[lh]C[Direction of play

Wrong direction (M13 would also already have been better at L14)
This only helps black get stronger and connect his groups.

So instead better K14!!!]
;B[li]
(;W[ki]C[K13 is THE shape point!!
(jump from the middle of 3 stones)]
;B[kj]
(;W[ji]C[Now I create bad shape, leaving K13 open for black-

Instead I should play K12]
(;B[jj]C[But for some reason, my opponent didn't play K13 - so this reverted back to the variation where white plays K13 first!]
;W[jg]
;B[ie]
;W[if]
;B[je]
;W[gf]
;B[gd]C[This move was too soft.
Better to play H15! to keep whites shape in the middle weak.

Keep in mind that black has C18+D18 sente against the top left corner, so there is not really any connection issue between H15 and the left side wall!]
;W[ij]
;B[ik]
;W[hk]
;B[hj]
;W[ii]
;B[il]
;W[hl]
;B[im]
(;W[og]C[BAD EXCHANGE!!

I played this purely because I wanted to - not because I saw anything working here.

Apart from that being a bad idea, this move is also horrible!!!

It forces black to fix their weakness at N11 and I get almost nothing in return!


Instead I should simply play R13!!
This still threatens N11, but it actually gives me some profit(!) and strengthens R11, so I can possibly enter the center easier later on.

]
;B[mi]
(;W[ko]C[After black had just connected - I knew P13 was bad.

I was not in a great mindset at this time, so my next error did't have to wait long.

Attach doesn't always mean sente - and in this case there is much bigger fish to fry!!

At least I should follow-up at Q14 now!!

Other alternatives are D18 (still huge reverse sente) and simply G10]
;B[gj]
(;W[fk]C[Importance of stones..

My two stones are not that important right now, because keeping G10 weak is an unrealistic dream.

So it is better to just live with G12 directly!]
(;B[fj]C[black doesn't even have to answer it - it already was a beneficial exchange.
Instead he could play R14!! now....]
;W[he]
;B[hd]
;W[gh]
;B[ek]C[A bit slow]
;W[ln]
;B[mo]
(;W[kn]C[too slow - I have a much more efficient way to protect the cut with L8!! also hitting that shape point!]
;B[qh]C[Mistake - losing points compared to just R14  (see game continuation)]
;W[qg]
;B[ph]
;W[pg]
;B[rg]
;W[oh]
;B[pi]
;W[oi]
;B[ri]C[Note that this is not sente to cut off white - see variation.]
(;W[lk]
;B[kl]
;W[ll]
;B[mm]
;W[kk]
;B[jk]
(;W[km]C[shape!!

It is unnecessary to remove that eye.

Instead I can play M7!!! (and black still has no way to make an eye at K8!).
M7 gives me a lot more liberties - which will come to be important very soon..]
;B[lj]
;W[pj]C[Bad exchange, there is not need for this!
It doesn't help me at all.]
;B[qj]
;W[nk]
;B[gm]C[Here I stopped to think for quite some time.

I had two options:
a) Fight hard with F8
b) back off and try to just take bottom territory from this attack with F7

I wasn't confident I could win by backing off, so I chose to fight!!]
(;W[fl]
;B[fn]
;W[fm]
;B[en]
;W[hm]
;B[nj]
(;W[oj]C[trying really hard
But I need big ko threats, which I don't have!

at this point lz suggests E10!!
It is not working directly, but it creates a lot bigger ko threats ot fight the ko!!!
(see variation)]
;B[mk]
;W[ml]
;B[nl]
;W[mj]
;B[lm]C[Now it becomes apparent why I should've played M7 instead of L7 earlier!]
;W[jl]
;B[mk]
;W[cg]C[Big, but not big enough

Now the game is better for black]
;B[kl]
;W[bh]
;B[bi]
;W[ag]
;B[dl]
;W[fo]
;B[hn]
;W[go]
(;B[dn]C[Too small - better J5!]
(;W[bj]C[Mistake - L4 was bigger!
(And this clamp is not urgent)]
;B[cj]
;W[ai]
;B[kp]
;W[jp]
;B[lq]
;W[kq]
;B[lp]
;W[jq]C[J5 was urgent!! (reverse sente!)

In the meantime K3 still gives blackthe option to play M2, whereas I could've protected against the K3-cut with M2 myself later

So K3 doesn't do anything!!]
;B[io]
;W[jo]
;B[mb]C[From here on, unfortunately I don't remember the move order, since we both were in byo-yomi a considerable amount of time.


We both thought he was slightly ahead, though after I won the J6-ko, I wasn't sure anymore.

I ended up winning by 1.5! :)
]
;W[cb]
;B[db]
;W[da]
;B[ea]
;W[ca]
;B[fb]
;W[lr]
;B[ci]
;W[bk]
;B[bm]
;W[mn]
;B[nn]
;W[np]
;B[no]
;W[jm]
;B[qe]
;W[qf]
;B[qd]
;W[rd]
;B[pf]
;W[rf]
;B[eg]
;W[fg]
;B[df]
;W[bg]
;B[ck]
;W[eh]
;B[ge]
;W[hf]
;B[ei]
;W[ef]
;B[oq]
;W[or]
;B[pp]
;W[rp]
;B[qq]
;W[pr]
;B[ok]
;W[nb]
;B[rl]
;W[do]
;B[cn]
;W[bl]
;B[cl]
;W[fe]
;B[fd]
;W[sg]
;B[rh]
;W[ng]
;B[nf]
;W[na]
;B[rq]
;W[rr]
;B[al]
;W[aj]
;B[ma]
;W[mc]
;B[kb]
;W[in]
;B[jn]
;W[oe]
;B[pe]
;W[in]
;B[gk]
;W[gl]
;B[jn]
;W[eb]
;B[ec]
;W[in]
;B[hi]
;W[ho]
;B[hh]
;W[hg]
;B[ih]
;W[jh]
;B[jf]
;W[ig]
;B[kf]
;W[co]
;B[bo]
;W[em]
;B[kg]
;W[kh]
;B[ee]
;W[ff]
;B[fi]
;W[fh]
;B[dm]
;W[sq]
;B[sn]
;W[qr]
;B[so]
;W[ah]
;B[sf]
;W[se]
;B[ds]
;W[es]
;B[ql]
;W[pk]
;B[sm]
;W[sh]
;B[si]
;W[sf]
;B[ni]
;W[rc]
;B[mq]
;W[ak]
;B[am]
;W[nr]
;B[mp]
;W[ce])
(;W[kp]))
(;B[io]C[heavily reducing the bottom side while attacking the 5 white stones]))
(;W[ej]
;B[ei]
;W[dj]
;B[dk]
;W[cj]
;B[fh]
;W[cl]
;B[em]
;W[in]
;B[cm]
;W[fo]
;B[cn]
;W[oj]C[NOW I have ko-threats]
;B[mk]
;W[ml]
;B[nl]
;W[mj]
;B[lm]
;W[jl]
;B[mk]
;W[dm]))
(;W[fm]
(;B[nj]C[fighting back strongly!]
;W[hm]
;B[hn]
;W[in]
;B[ho]
;W[gl]
;B[jn]
;W[ip]
;B[io]
;W[kp]C[possible variation])
(;B[gl]C[if black simply backs off here directly]
;W[fl]
;B[gk]
;W[hn]
;B[hm]
;W[lp]C[I can get much more!])))
(;W[lm]
;B[lj]
;W[nk]
;B[nj]
;W[oj]
;B[mk]
;W[ml]
;B[ok]
;W[mj]C[compare to the game!]))
(;W[cb]
(;B[qf]
;W[pf]
(;B[qe]
;W[qd]
;B[pe]
;W[rf])
(;B[pe]
;W[qe]
;B[rf]
;W[qd]))
(;B[rf]
;W[qf]
;B[qe]
;W[qd]
;B[pe]
;W[pf])))
(;W[kl]))
(;B[qf]
;W[rf]
;B[cb]
;W[bb]
;B[db]
;W[ba]
;B[qg]
;W[rg]
;B[gh]C[..and then even attack directly here]))
(;W[gh]))
(;W[pf])
(;W[db]
;B[eb]
;W[cb])
(;W[gj]))
(;W[qg]
;B[gj]
(;W[gh]C[And I can just live here])
(;W[mi]C[Or I can counterattack!!!]
;B[lj]
;W[ni]
;B[oh]
;W[oi]
;B[ph]
;W[pi]
;B[qh]
;W[rg]C[Now THIS works... ]
;B[rh]
;W[ri]C[...because R11 has many liberties AND a possibly connction to S6]
;B[pf]
;W[pe]
;B[qe]
;W[qd]
;B[qf]
;W[oe]
;B[rf]
;W[sh])))
(;B[jg]C[Shape point]
;W[kf]
;B[jf]
;W[ke]
;B[jd]C[And this is uncomfortable for white]))
(;W[jh]
;B[ji]
;W[kh]
;B[jj]C[Even though it looks ugly, it gives me much stronger shape!]
;W[jd]C[And now I can counterattack!]
;B[jc]
;W[id]
;B[ic]
;W[hh]C[possible variation]))
(;W[jg]
;B[ie]
;W[ki]
;B[kj]
;W[ji]
;B[lj]
;W[je]
;B[jd]
;W[if]
;B[he]
;W[ke]
;B[kd]
;W[hf]C[Possible variation]))
(;W[jf]
;B[id]
;W[ie]
;B[hd]
;W[ki]C[Successful reduction with good shape.
And black is still not quite settled with the two groups on the right side]))
(;W[kf]
(;B[id]
;W[kh]C[Now I can reduce while attacking while not touching the black group (thus not making it stronger)])
(;B[kh]C[and if black attacks from this direction]
;W[jd]C[I can destroy lay waste to the top side moyo]
;B[jc]
;W[ic]
;B[id]
;W[jb]
;B[kc]
;W[hd]
;B[ie]
;W[hb]C[for example like this])))
(;W[dg]C[possible variations]
;B[dh]C[(not a bad exchange, because it adds to the aji on the top side and the left side is already reduced thanks to E5 and G6 - an idea I used later in the game)]
;W[ig]
(;B[ie]
(;W[fg])
(;W[ii])
(;W[db]C[This is also huge, because black can get C18+D18 in sente anytime]))
(;B[gm]C[Strongest response according to lz (just as an fyi ^^)])))
(;B[qg]C[if white tries to cut now at N15, black can sacrifice the two stones!]
;W[me]
;B[mf]
;W[md]
;B[ld]
;W[nf]
;B[ng]
;W[oe]
;B[og]C[and black has gained a lot more center control, while also weakening R11 severely]))
(;W[mc]C[This seems to  aim at protecting the cut with sente to get back to the right side]
;B[md]
;W[nc]
(;B[lb]C[Huge move - if black omits it, white can heavily reduce the top black moyo in sente and then reduce from the outside]
;W[pf]
;B[of]
;W[qe])
(;B[of]
;W[lb]
;B[kc]
;W[kb]
;B[jc]
;W[mf]
;B[me]
;W[lj]C[Also keeping an eye on R11 and R9 - very cool ^^])))
(;W[oi])
(;W[mn]))
(;W[le])
(;W[oi]C[Black doesn't have to respond to this yet, but it strengthens my top right and keeps a bit more control - I slightly prefer this now.]))
(;B[ro]
(;W[pl]
;B[ql]
;W[pn]
;B[on]
;W[om]
;B[sn]
;W[pm]
;B[pk])
(;W[ql]
;B[pl]
;W[rk]
;B[rl]
;W[qj]
;B[pk]
;W[sl]
;B[pn]
;W[sm])
(;W[rl]
;B[ql]
;W[rk]
;B[pn]
;W[sm]
;B[qj]
;W[rj]
;B[pi]
;W[ph]
;B[qh]
;W[ri]
;B[oi])))
(;W[ql]
(;B[pl]
;W[ro])
(;B[rl]C[and if black tries this]
;W[qn]C[now I can connect here]
;B[ro]
;W[pl]C[and black has horrible shape])))
(;B[ro]
;W[rl]
;B[op]
;W[oq]
;B[pm]
;W[rk]
;B[ql]
;W[sm]
;B[qn]
;W[qj]C[possible continuation
The big difference is that S5 is worth a lot of endgame]))
(;W[kd]))
(;W[kc]C[The 3-3 stone is flexible - so I can choose to reduce the top side more like this.]))
(;B[dg]
;W[de]
;B[ce]
;W[db]
;B[eb]
;W[cb]
;B[fc]
;W[ee]
;B[fd]))
