(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]
RU[Japanese]SZ[19]KM[7.00]
GN[Northern, 2013, round 1]PW[A.N. Other 17]PB[thirdfogie]WR[4k]BR[4k]DT[1 Sep 2013]RO[1]PC[Stockport]C[I defeated this opponent once before in a game with 30 minutes each, so I was fairly confident at the start.Comments on black 39 and 41 are particularly invited.]
;B[pd]
;W[dp]
;B[pq]
;W[dd]
;B[ql]
;W[nc]
;B[pf]
;W[jd]
;B[fq]
;W[dn]
;B[jp]
;W[dj]
;B[po]
;W[jj]C[If White had played this stone somewhere in the top left, I would have played at tengen next, so this was interesting.]
;B[lc]
;W[ld]
;B[md]
;W[le]
;B[mc]
;W[kc]TR[nc]C[This sequence blights the marked white stone, but strengthens White's framework, so it was hard to evaluate.]
;B[fc]TR[kc][jd][ld][le]C[Hoping for an attack on the marked stones.

UN: Hmm Did you read how this would turn out?]
;W[ec]
;B[fd]
;W[df]
;B[hd]
(;W[fg]C[UN: This seems like a bad move by white.]
;B[ic]LB[kb:a]TR[kc][jd][ld][le]SQ[fc][fd][hd]C[Grabbing the eyespace between the two weak groups (marked).  Also aiming to connect under at a.]
;W[fo]LB[hp:a]SQ[fq]C[White expected Black to answer at a.I decided that the marked stone is still light so long as the bottom left corner is open.]
;B[ig]
;W[ie]
;B[he]
(;W[if]
;B[hf]
(;W[jg]LB[hg:a]C[I expected White to play this at a.]
;B[hh]
;W[jh]
;B[kb]
;W[pi]
;B[ni]C[I did not know what to play here.

]
;W[oh]
(;B[mg]C[This did not work out well.

UN: Did you read in game that this would not work?]
;W[nh]
;B[mh]
;W[mi]
;B[nj]
(;W[mj]
;B[nk]
;W[mk]LB[me:a]C[Black should have played a now.  White should probably have played differently before this to avoid Black a.]
(;B[nl]
;W[nf]C[I did not expect this move.  The game is lost!]
;B[nd]C[My opponent praised this move after the game.  It was played to minimise the loss in the centre and (hopefully) secure the corner territory.]
;W[of]LB[mf:a]TR[mg][mh]C[Is a White move around here necessary?  I would probably have played at a to take a liberty from the marked stones.]
;B[hp]
;W[hn]
;B[hj]
;W[gk]
;B[gj]
;W[fk]
;B[hk]
;W[lo]
;B[ml]SQ[mg][mh]C[I had this move prepared against any White invasion in this part of the board.I have recently come to understand that loosely captured stones like those marked can act as a dagger in the heart of the group which encloses them, especially when the dead stones have three or four liberties.  It means that the player who has captured them has to play very cautiously at the boundaries of the enclosing group.]
;W[ll]
;B[lm]
;W[kn]
(;B[jn]
;W[kl]
;B[km]
;W[jm]
;B[jl]
;W[im]
;B[kk]
;W[jo]
;B[li]
;W[in]TR[kc][jd][ld][ie][le][if][nf][of][jg][jh][nh][oh][pi][jj]C[Not needed.  It was more important to save some of the marked stones.  White should be thinking about minimising his loss.

UN: Definitely an unneccesary move]
;B[lk]
;W[mf]
;B[kg]C[Killing the big white group looks routine when reviewing this record, but it was hard to work out at the time.

UN: I would never have seen a move like this o_o]
(;W[kf]
;B[jc]C[Perhaps White should have found time to play here first.]
;W[kd]
;B[pg]
;W[qi]
;B[rg]
;W[rk]
;B[qk]
;W[rl]
;B[rj]C[White may have overlooked this move.]
;W[qj]
;B[ri]
;W[kh]
;B[lg]
;W[kj]
;B[lj]
;W[ii]
;B[ki]
;W[il]
;B[jk]
;W[ik]
;B[ij]C[White may have overlooked this atari.]
(;W[ji]
;B[hi]
;W[eq]
;B[lq]
;W[mq]
;B[kq]
;W[mr]
;B[mp]
;W[np]
;B[lp]
(;W[no]C[White is short of time, and makes one last mistake.]
;B[mo]C[White resigned.])
(;W[mo]
;B[lr]
(;W[nq]
;B[no]
;W[oo]
;B[nn]
(;W[on]
;B[op])
(;W[op]
;B[pp]
;W[on]
;B[pn]
;W[pm]
;B[qm]
;W[nm]
;B[mn]
;W[pk]
;B[pl]
;W[oj]
;B[ok]))
(;W[oo]
;B[nq]
;W[oq]
;B[nr]
;W[or]
;B[ms]
;W[qr]
;B[pp]
;W[op]
;B[pr]
;W[ps]
(;B[rq]C[White has probably still lost.])
(;B[qn]C[Safest for Black.]))))
(;W[hi]
;B[gi]
(;W[gh]
;B[ji])
(;W[ih]
;B[hg]
(;W[ji]
;B[fh])
(;W[gh]
;B[ji]))))
(;W[pg]C[UN: This seem like an easy way to live for white.

[last comment\]]))
(;B[km]C[Variations added afterwards.  Not considered during the game.]
;W[jn]
;B[lk]
;W[lj]
;B[kj]
;W[kk]
;B[ki]
;W[jk]
;B[li]
;W[lk]
;B[ji]
;W[ii]
;B[lh]
;W[ij]
;B[ih]
(;W[mf]
;B[jf]
;W[kf]
;B[kg]
;W[je]
;B[lf]
;W[me]
;B[jl]C[Ko?])
(;W[il]
;B[jf]
;W[kf]
;B[mf]
;W[me]
;B[ne]
;W[ng]C[White wins.])))
(;B[me]
;W[nl]TR[nh][oh][pi]C[UN: This leads to some fun Variations.

White might lose these three marked stones
But he has a chance to break into your corner.]
(;B[ok]
;W[pk])
(;B[pj]
;W[pk])
(;B[pk]
;W[ol]
;B[pj]
;W[qm])))
(;W[nf]C[UN: It looks safe now.]))
(;B[mf]C[Better?])
(;B[nh]
;W[og]
;B[mf]C[UN: Maybe.]))
(;W[hg]
;B[gg]
;W[hh]
;B[gh]C[UN: Looks like a bad cut for white.]))
(;W[hf]C[UN: I think this is the right time for white to cut.]
;B[if]
;W[gf]
(;B[kb]
;W[kg])
(;B[kg]
;W[mf]C[UN: Idk. Something like this maybe.

I'm not sure what will happen to the three groups.])))
(;W[if]C[UN: What if white plays this way?

Attacking the group you planned on attacking seems harder if white reinforced his group while attacking. instead of playing from the strong side.]))