(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]
RU[Japanese]SZ[19]KM[6.50]
GN[Bo R3]PW[Matthias Terwey]PB[David Ulbricht]WR[4d]BR[2d]RE[W+Resign]
;B[qc]
;W[cp]
;B[oq]
;W[dc]
;B[qn]C[Got to play this again. Made my opponent think for several minutes! :)
(Good way to gain a slight time advantage :P)]
;W[fq]
;B[ce]
;W[fd]
;B[ch]
;W[pp]
;B[pq]
;W[qp]
;B[qq]
;W[rq]
;B[op]C[My opponent was visibly not expecting this move.
Fyi, it is the best move.

Responding at S2 would give me a useless move in the corner, since white's next move will be S5 in any case!]
;W[ro]
(;B[on]C[Alternative S6]
;W[rn]
;B[qm]
;W[qr]
;B[hc]
(;W[bc]C[Lz really doesn't like this move.
It prefers C16+G18
or even just tenuki to K4]
;B[kd]
;W[pd]
;B[pc]
;W[od]
;B[re]
;W[pg]
(;B[nc]C[This move in this particular position is a bit too slow, since both grroups are fine.

Instead it is bigger to return to the bottom side with G4 or H3
(see possible variations)]
;W[oc]
;B[ob]
;W[nb]
;B[mb]
;W[nd]
(;B[mc]C[Inefficient, leaving aji in the corner!!! (see game continuation)

Instead take at O19!]
;W[cj]
;B[dp]C[Good timing]
;W[dq]
;B[co]
;W[ep]
;B[do]
;W[bp]
;B[cq]
;W[bq]
;B[cr]
;W[br]
;B[eo]
;W[fo]
;B[fn]
;W[go]
;B[gn]
;W[ho]
;B[cl]C[I separated C10, but C10 is also flexible, so this is still a very equal game so far!]
;W[ej]
;B[eh]
;W[gj]
;B[hn]
;W[io]
;B[pi]
;W[pb]C[Now the aji comes back to give white outside shape!]
;B[na]
;W[qd]
;B[rd]
;W[rc]
;B[qb]
;W[rb]
;B[pa]C[all forced]
(;W[rf]C[Overplay - instead white should play R14]
(;B[qe]C[but I didn't punish - huge mistake!!

I thought I could force white into bad shape, but instead I just made him stronger!


So instead I should've taken that extra liberty with R14!!]
;W[qf]
;B[pe]
;W[oe]
(;B[of]C[Bad exchange, only giving white more shape outside!!

Instead directly play S19!!]
;W[nf]
;B[md]C[Note: Yes I get this exchange for free, but N16 is not really helping me in any way, so the benefits for white far outclass anything I got from this]
;W[ne]
;B[ra]
;W[pf]
;B[sb]
;W[nh]
;B[ni]
;W[mh]
;B[jq]C[Similar to game 1, I was behind and needed to play something more active instead of something greedy!

Here the better idea was to continue at N11 or continue in the middle like with G12 or use the shape weaknesses on top to play F18 and harass that area a bit.

In any case, activity is key!!
Otherwise it is hard to force the opponent into mistakes]
;W[ck]
;B[dl]
;W[hi]
;B[ff]
;W[fl]
;B[el]
;W[hd]
;B[id]
;W[he]
;B[gc]
;W[fc]
;B[gh]
;W[hh]
;B[hg]
;W[ig]
;B[hf]
;W[if]
(;B[fk]C[Prior to this move, knowing I was behind, I desperately tried to find a way to cut off the C10-stones, but I couldn't quite make it work, because of G12 not being strong enough (see variation).

So I decided to simply strengthen my bottom left group, fully expecting white to just connect at F10.]
;W[gk]C[But he didn't!
He even told me after the game that he had seen my next move, but for some reason only read one variation, that didn't work for black.

Once again, I had found a way to make a comeback in a game! :)]
;B[dj]C[BAM! :P


Fun fact: I had just read a tesuji book during the train ride to the tournament - and this tesuji was one I just had read about :D]
(;W[dk]C[White just simply played here.

LZ suggest a beautiful tesuji though, that makes miai of connecting or sacrificing the white stones efficiently.

It's C13!! (see variations)]
;B[fj]C[(ofc, the whole point of D10 - now F10 works)]
;W[bh]
;B[bg]C[Since white can live anyway, it is a bit stronger to play C13 here, so wC11 is not forcing]
;W[ci]
;B[dh]
;W[ek]
;B[fi]
;W[bl]
;B[bm]
;W[al]
;B[am]
;W[bj]C[A baffling mistake. My opponent admitted after the game, that he was hallucinating here :D

Instead A10 is clear and simply life and the game is still better for white!
Shows what tournament pressure can sometimes do to your brain! xD]
;B[ah]
;W[ai]
;B[bi]
;W[cm]
;B[dm]
;W[bh]
;B[er]
;W[eq]
;B[bi]
;W[nn]C[I was already in time trouble at this point, so I had to make a quick decision.

I didn't think this ko threat was severe enough, so I went for the money!!


(Note: Lz agrees - only that I then need to handle the complications around P6 better than I did in the game...)]
;B[aj]C[wooosh ^^]
;W[oo]
;B[no]
;W[po]
(;B[mo]C[Relation of stones:

This move has a bad relation to K3
(I know - ironic since it is like my encloure in that corner :P )

Instead better to play N4!

Alternatively I can also play P7 and sacrifice 4 stones]
;W[nm]
(;B[om]C[Pushing from behind - nonono!!! ^^

P6, even though it is a cutting stone, is not important at all!

So instead use to get forcing moves to strengthen my important stones on that side!

For example with O8!]
;W[nl]
;B[ol]C[Again - uuurg

I was under time pressure, but this is just the wrong instinct to have.

Instead I should either jump ahead to P9 or make some eyeshape with R9]
;W[nk]
(;B[ok]C[Not even forcing, now white can really try to kill me.

Instead: Last chance to make "easy" shape with S10!
(Note: I might have to sacrifice the 4 S15 stones for that)]
(;W[qj]C[I felt really bad at this point, thinking I am about to 'throw' this game
Ofc I knew that even after capturing the left side it was far from over, but I had a good feeling after A10.

We were both under time pressure at this point, so I won't say too much about the following moves until the crucial point of the game!]
;B[nj]
;W[lm]
;B[qi]
;W[ri]
;B[pj]
;W[qk]
;B[oh]
;W[og]
;B[rm]
;W[rj]
;B[rh]
;W[qh]
;B[ph]
;W[qg]
;B[lj]
;W[lp]
;B[lr]
;W[mq]
;B[mr]
;W[np]
;B[nq]
;W[kl]
;B[kk]
;W[ki]
;B[jl]
;W[lk]
;B[kj]
;W[jk]
;B[km]
;W[ll]
;B[li]
;W[kh]
;B[il]C[This - in my mind - was my last ditch effort to turn this game in my favor.

It was the 3rd game and I was too deep into byo-yomi to be able to read out what would happen to the white cutting stones (M7-group).

The next move by white was game-losing!!!]
;W[jj]C[Efficiency of stones.

White only had in mind to not give me that eye.
He completely disregarded the fact, that reducing the liberties of the K8-stones would have the best effect on supporting his own weak group (M7)

So instead, white should've played J9!!!
]
;B[kn]
;W[lo]
;B[mp]
(;W[ln]
;B[jp]
;W[jm]
;B[jn]
;W[im]
;B[in]C[And now you can see, why a move at J9 would've been so much better
(I could've avoided to play K6 in this game, but white had much trickier ways to set this up, so I still think that from a practical standpoint, K10 was game-losing)]
;W[mn]
;B[lq]
;W[pk]
;B[oj]
;W[pn]
;B[pm]C[I had only 6 seconds left for 3 more stones, but white didn't see any point in abusing that, so he resigned here.

And this marks my first ever equal win against this opponent :)])
(;W[ko]))
(;W[bs]))
(;B[rj]))
(;B[nl]
;W[om]
;B[ol]
;W[lm]
;B[rk]
;W[mq]C[I still have to endure this, and white will get more profit, but it is still good for black overall]
;B[lr]
;W[lq]
;B[mr]
;W[nr]
;B[nq]
;W[kr]
;B[ns]
;W[kq]
;B[ls]C[for example]))
(;B[mp]
;W[mo]
;B[np]
;W[om]
;B[nk]C[And then live seperately on the right side])
(;B[om]
;W[np]
;B[mo]
;W[nq]
;B[nr]
;W[or]
;B[mp]
(;W[pr]
;B[ll]C[And then come back to connect the outside])
(;W[mq]
;B[lq]
;W[pr]
;B[ko]C[Or make shape on either side - white can't really pull out O7 easily.]
(;W[ml]
;B[mm])
(;W[mm]
;B[ll]
;W[lm]
;B[km]
;W[ml]
;B[mk]
;W[nk]
;B[lk]
;W[nl]
;B[nj]
;W[pk]
;B[qk]
;W[pl]
;B[ql])
(;W[nm]
;B[nl]
;W[mm]
;B[km]
;W[ml]
;B[nk]
;W[kl]
(;B[rj])
(;B[jl])))))
(;W[cg]C[Now black has to choose]
(;B[bg]C[either respond directly to C13, giving white the connection with D11]
;W[di]
(;B[dh]
;W[dk])
(;B[dk]C[Note that this is just a bad exchange and doesn't change anything)]
;W[ci]
;B[dh]
;W[ei]))
(;B[ci]C[or keep the two white stones captured, but lose something around C15]
;W[dg]
;B[ei]
;W[eg]
;B[fg]
;W[fi]
;B[ek]
;W[fh]
;B[fe]
;W[de]
;B[gd]
;W[ie]
;B[ge])))
(;B[fj]
;W[fi]
;B[dj]
;W[dk]
;B[ek]
;W[di]
;B[fk]
;W[ei]
;B[gi]
;W[fh]
;B[gg]
;W[fg]
;B[gf]
;W[ef]C[gg...]))
(;B[ra]
;W[pf]
;B[sb]
;W[ng]C[compare to move 80 of the real game!]))
(;B[qf]
(;W[rg]
;B[qe]C[and thanks to the extra liberty, white can be cut!]
(;W[qg]
;B[of]C[either here (and white can't push through due to P16 only having few liberties)])
(;W[pf]
;B[qg]C[or here]
;W[qh]
;B[ph]
;W[qi]
;B[ra]
;W[pj]
;B[ni]
;W[pe]
;B[sb]
;W[nh]
;B[oj]
;W[pk]
;B[mi]C[possible continuation]))
(;W[qg]C[note, white can also choose this option]
;B[rg]
;W[pf]
;B[qe]
;W[rh]
;B[sf]
;W[qi]
;B[pj]
;W[qk]
;B[pk]
;W[ql]
;B[rm]
;W[pl]
;B[ol]C[but it is just as uncomfortable])))
(;W[qf]
;B[rf]
;W[rg]
;B[qh]
;W[qg]
;B[nh]C[R15 is sente anytime and there is still a lot of weaknesses in blacks surrounding shape, so this is fine for white]))
(;B[na]
;W[mc]
;B[lc]C[!!]
;W[nb]C[And this is a ko white can not fight right now, so after the next ko threat...]
;B[pr]
;W[rr]
;B[nc]
;W[md]C[..white might have to connect anyway]))
(;B[gp]
;W[gq]
;B[ip]
;W[hp]
;B[ho]
;W[hq]
;B[io])
(;B[hq]
;W[jq]
;B[io]
;W[mq]
;B[lo]))
(;W[cd]
;B[de]
;W[gb]C[making the left side black stones a bit heavier and it has more effect on H17])
(;W[jp]C[Keeps the top left flexible.
There is no follow-up by black that white can't handle easily enough.]))
(;B[rn]C[I could also choose to fight hard here]
;W[po]
;B[om]C[Like that]))
