(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]
RU[Japanese]SZ[19]KM[7.00]
GN[Do2]PW[Christopher Kacwin]PB[David Ulbricht]WR[5d]BR[3d]C[]RE[B+Resign]
;B[qc]
;W[dd]
;B[oq]
;W[dp]
;B[qn]
;W[fq]
;B[cc]
;W[cd]
;B[dc]
;W[ed]
;B[fb]
;W[pd]
;B[pc]
;W[od]
;B[re]
;W[pg]
;B[nc]
;W[ck]
;B[dj]
;W[dk]
;B[fj]
;W[ek]
;B[gh]
;W[dh]
;B[di]C[creating a bit of a heavy shape.

Better to just play outside (e.g. F9)
or tenukie all together (e.g. G4, O16 or Q11)]
;W[eh]
;B[fi]C[(You can see that this is inefficient shape with G12 being a slow move now!)]
;W[bi]
;B[nd]C[Starting my game plan:
This move has the purpose to

a) put some pressure on the white group (not though, that the two white stones don't matter that much, so it has to be a whole group attack later on!

b) Help the G12-group

c) threaten to create a big top side with O13 (building while attacking) and G17 or G16]
;W[bc]C[This move is the wrong direction in my opinion.
It is usually used to strengthen the 3 white stones on the 16-line, but those are already pretty strong, so there is no reason to play here right now.]
;B[gc]C[So I continued with my plan.

That being said, it is probably better to start at O13.
Forcing moves first.
Now white could play the light N14!!]
(;W[po]
;B[pn]
;W[pq]
;B[pp]
(;W[qp]C[Wrong direction by my opponent.
Getting sealed in while black takes a nice outside is helping me with the plan to develop the center naturally, which also helps G12 a lot as well as for the attack on Q13

Instead white should play P4!]
;B[op]
;W[qo]
;B[oo]
(;W[rn]C[Bad exchange.
This only helps black making the Q6-group stronger, which in turn weaknes the effectiveness of the P6-cut.

Instead the best move is R2!]
;B[rm]
;W[so]
(;B[ql]C[Also possible to cut at R3 instead!!!]
;W[qq]
;B[or]C[I took some time to make sure this is really sente - probably should know this one by heart ^^

(If white tenuki, then first S4 kills)]
(;W[pr]
;B[ng]C[This point, as mentioned, was crucial.

I did leave a defect at P6, but both sides are strong enough to handle that cut easily!
So defending the cut with something like O7 would be way too passive!]
;W[on]C[Doesn't mean it is a bad idea to cut - after all white wants to find some counterplay!]
;B[ol]C[I chose this move specifically, because it has a good relation to O13 and thus gives Q13 a much harder time]
;W[nn]
;B[lp]
;W[nh]
(;B[oh]C[Alternatively, I could've chosen to simply back away with N13 and build the top that way, or to hane outside with N12 and then attack the shape with Q11.

However I was in a mood to challenge my opponent and also thought this move made a lot of sense with P8.
I didn't fear the fight expanding into that direction, because O6 is also weak and my bottom group (M4) is pretty strong.]
;W[oi]C[I was very surprised my opponent didn't cut at P13.
I see what my opponent is aiming at (sacrificing more to get closer to P8), but

a) As mentioned, P8 is not really that easily attackable
b) Allowing me to cut through whites shape at Q12 is HUGE
c) If white cuts at P13, it also leaves a lot more aji around O14!!

So in my opinion, white HAD to cut and fight back.]
;B[ph]C[Now I'm extending the lead I got from the bottom right corner!]
;W[pi]
;B[qh]
;W[qi]C[Not forcing enough.

All white did basically was to create a heavy group.... in gote!

R11 just makes the group even heavier while not taking away much and losing outside control.
All this must be from the wrong impression about the strength of P8!!!

So you see, it is very important to be able to evaluate the strength of groups!


All that being said - it would be better for white to continue with N12 instead!
(Earlier, before also exchanging Q11 fo R12, white could also choose the lighter N13!)]
(;B[nk]C[Going against my plan this time.

Instead O11 is a stronger option!

In game I was afraid of what would happen if white counterataris at O10, but as mentioned, my black P8- group is not to be worried about.

And if white extends to N12, there will be an exchange!


(That being said, O9 is still an ok move)]
;W[rh]
;B[qg]
;W[pk]
;B[pl]
;W[mj]
(;B[ll]C[Again I had the option to play O11.

In game I didn't like it, because I would take gote and give white the chance to attack O9.
But since both white groups are weak (especially O6) and the gap between N10 and O6 is too big it is still no problem for me to handle.]
;W[mh]
;B[mg]
;W[lh]
;B[lg]
;W[ln]C[I think the threats towards G12 are more beneficial to white, so instead maybe better K12! (possibly probe S13 first!)]
;B[kh]
;W[ki]
;B[rj]C[The timing of this one is a bit against L12.
Probably makes more sense to continue with e.g. K12!]
;W[jh]
;B[kg]
;W[ji]
;B[hg]C[Here I locally thought about H13 and H14.
Both have their advantages, but I chose the one that is closer to my weakest group.

Globally also moves like L8 make a lot of sense.]
;W[ri]
;B[kk]C[Taking away eyespace (threatening O10+M10 next, giving white a false eye in sente!)]
;W[nj]C[S13+S9 is probably more profitable]
;B[jq]C[I chose low instead of high (K4) , because I think it still threatens to capture M6 next with the cap at K6, while it also gives white no chance to slide underneath at the bottom side.]
;W[hd]TR[ed][jh]SQ[gc][hg][kg]C[A move in this area was to be expected. My connections from G17 to H13 to L13 are already poked with E16 and K12, so white should have some aji here to exploit.]
;B[fe]C[This move wants it all, but is willing to sacrifice the two stones in the top left corner.]
;W[gf]
(;B[ff]C[I chose to resist hard!

Alternative option: J14

It gives white the option to connect back, but accomplishes the goal of keeping the H13-group save more directly!

Then it treats the top side and bottom side as miai.]
;W[fd]
;B[gd]
;W[ge]
;B[fg]
;W[if]
;B[jg]
(;W[hc]C[Better shape: J17!]
;B[hb]
;W[jc]
;B[ib]
;W[je]
;B[kd]
;W[jd]
;B[jb]C[Saver to protect and connect with J13!

But in game I didn't want white to get more forcing moves against the top side and wanted to reduce space and liberties from white!]
;W[kc]
;B[lb]
;W[kb]
;B[ka]
;W[lc]
;B[mc]
;W[km]
;B[ik]
;W[fh]
;B[gg]
;W[hi]
;B[ih]C[Time pressure - just playing J13 makes much more sense!]
;W[ig]
;B[hh]
;W[ii]
;B[gi]
;W[hk]
;B[il]C[From here on, I am not quite sure about the order of moves and not even about how the end score was, since we didn't count.

But the general way it continued is correct.]
;W[ke]
;B[hf]
;W[he]
;B[hl]
;W[fk]
;B[gk]
;W[me]
;B[ld]
;W[le]
;B[ne]
;W[hj]
;B[ic]
;W[ie]
;B[md]
;W[mb]
;B[la]
;W[ja]
;B[ia]
;W[ma]
;B[ja]
;W[gj]
;B[mf]
;W[ef]
;B[lf]
;W[eb]
(;B[nb]C[Very passive move under time pressure.
Instead I could've played away to the bottom side! (e.g. to J5!)]
;W[mp]
;B[mq]
;W[lq]
;B[kp]
;W[mo]
;B[mr]
;W[mk]C[(these next two exchanges came much earlier)]
;B[ml]
;W[ok]
;B[nl]
;W[in]C[So after white got some forcing moves around N4, white jumped out this far.Only - it doesn't work.]
;B[jn]
;W[jm]
;B[kn]
;W[lm]
;B[im]
;W[io]
;B[ko]
(;W[gl]C[In the game I was slightly confused, why white didn't try to cut me with L8+K9.

Now I see that it simply doesn't work due to shortage of liberties (see variation!)]
;B[kl]C[I was very happy to connect, feeling confident about the game now!]
;W[rg]
;B[qf]
;W[fc]
;B[gb]
;W[ir]
;B[iq]
;W[hr]
;B[jr]
;W[gn]
;B[hq]
;W[gq]
;B[ho]
;W[hn]
;B[gp]
;W[fp]
;B[is]
;W[gs]
;B[ea]
;W[da]
;B[fa]
;W[db]
;B[qj]
;W[rk]
;B[qk]
;W[sj]
;B[sm]
;W[sk]
;B[ps]
;W[qs]
;B[os]
;W[sq]
;B[eg]
;W[dg]
;B[ee]
;W[df]
;B[kf]
;W[rf]
;B[qd]
;W[qm]
;B[pm]
;W[rl]
;B[mm]
;W[mn]
;B[pj]
;W[oj]
;B[sf]
;W[sg]
;B[se]
;W[kj]
;B[jl]
;W[lr]
;B[kr]
;W[go]
;B[hp]
;W[ci]
;B[jf]
;W[sn]
;B[si]
;W[sh]
;B[lk]
;W[hm]
;B[np]
;W[ls]
;B[ms]
;W[jp]
;B[nm]
;W[hs]
;B[js]
;W[jo]
;B[de]
;W[ce]
;B[id]
;W[cj]
;B[lj]
;W[li]
;B[no]
;W[ip]
;B[om]C[My opponent resigned before we got to counting.
This marks my first win against en EGF 5d in a tournament. :)])
(;W[kl]
;B[lk]
;W[jk]
;B[jj]
;W[jl]
;B[kj]C[No cut at J10 possible]
(;W[ij]
;B[li])
(;W[gl]
;B[ij])))
(;B[io]))
(;W[ic]
;B[hb]C[compare this to the game, where white has a stone at H17

Here white can block at J18 more easily.]))
(;B[if]
;W[gd]
;B[fd]
;W[hf]
;B[ff]
;W[ig]
;B[jg]
;W[gg]
;B[ih]
;W[fg]
;B[ec]C[And now saving the corner is still pretty big, since it allows follow-up endgame!

In the meantime my center has grown much stronger, so any fight there will be easy to handle.]))
(;B[ni]
;W[nj]
;B[mh]
(;W[ll]
;B[mm])
(;W[mk]
;B[ml]
;W[ll]
;B[mm])
(;W[ml]
;B[mk]
;W[lk]
;B[ll]
;W[kk]
;B[kl])))
(;B[ni]
(;W[mh]
;B[nj]
;W[lj]
;B[nk]
;W[og]
;B[qg]
;W[nf]C[An exchange.

Next I can play moves like J4, G8 or M11])
(;W[nj]
;B[mh]C[This is building the top side even stronger and also removes most of the aji of the Q13-stone!

]
(;W[nl]C[If white tries to cover here...]
;B[ok]
;W[nk]
;B[oj]C[...I can just cut this or break free]
;W[rk]
;B[ri]
;W[qj]
;B[om]
;W[nm]
;B[rl]C[And this will become a semeai 'one eye vs no eye'])
(;W[mi]C[Or after this...]
;B[li]
;W[nh]
;B[mm]C[I can go out here]))))
(;B[mg]
;W[nj]
;B[mk]
;W[mh]
;B[lh]
;W[li]
;B[ki]
;W[lj]
;B[kh]C[possible continuation, continued fight])
(;B[mh]
;W[ni]
;B[pi]C[breaking the table shape]))
(;W[ne]
;B[rp]
;W[rq]
;B[rs]))
(;B[qq]
;W[rq]
;B[pr]
;W[qm]
;B[rl]
;W[rr]
;B[ng]
;W[pl]
;B[on]
;W[pj]
;B[qi]C[and fight this way]))
(;W[qr]
;B[pr]
;W[qq]
;B[ng]
;W[on]C[and the cut is much more annoying than in the game!]))
(;W[op]
;B[qp]
;W[nq]
;B[or]
;W[np]
;B[nr]
;W[mr]
;B[qq]
;W[lq]C[For example like this]
;B[gl]))
(;W[mf]C[(Remember that the two P16-stones don't matter, as they don't effect the status of the adjecent black group!)]))
