(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]
RU[Japanese]SZ[19]KM[6.50]TM[9000]OT[1x60 byo-yomi]
GN[EGC2012 European Championship qualifier for final 8]PW[Jan Šimara]PB[Zhao Pei]WR[6d]BR[6d]DT[2012-08-01]PC[Bonn, Germany]C[I chose the game because Zhao Pei is a female 6d player, quite strong. 
Let's see how strong she is.
]RE[W+9.50]
;B[dp]
;W[pd]
;B[dd]
;W[pp]
;B[dj]
;W[fc]C[Do you like sanrensei?]
;B[hc]
;W[cc]
(;B[cd]C[typical joseki with sanrensei]
;W[dc]
;B[ed]
(;W[fd]
(;B[ec]
;W[eb]C[On which side shall black cut?]
(;B[db]C[this is the right cut]
(;W[cb]
;B[fb]
;W[da]
(;B[fe]C[giving one stone and taking influence is the right strategy]
;W[gb]
;B[gd]
;W[fa]
;B[gf]
;W[he]
(;B[ge]C[why did white  choose this joseki? ]
(;W[jp]
;B[qn]
;W[np]
;B[rp]
;W[fq]
;B[dn]
(;W[ql]
;B[qq]
;W[qo]
;B[po]
(;W[pn]
;B[oo]
(;W[rn]
;B[op]
(;W[oq]C[white wants  to punish black since o4 is high, not o3
]
;B[nq]C[black wants to capture the important p3 stone]
;W[mq]
;B[nr]
;W[mp]
(;B[on]
(;W[or]
;B[pm]
;W[ro]
;B[pr]
;W[mr]
;B[qp]TR[ql][rn][qo][ro]C[black is better since white  has a weak group 
where shall white  play now?
]
(;W[qm]
(;B[pj]
;W[qj]C[this move shows fighting spirit and will lead to a big fighting

]
(;B[qi]
;W[pk]
(;B[ok]
(;W[ri]C[this tesuji makes black a  bad  shape
]
;B[pi]
;W[rh]C[good for white
makes r11 bad move
]
(;B[go]TR[rh][pi][qi][ri][pj][qj]C[
bad exchange for black,
but she makes a large moyo on the left side
]
;W[oj]
(;B[pg]
;W[nj]
;B[nk]
;W[oh]
;B[rg]
;W[qf]C[at a first sight, it's a strange move, making black stronger]
(;B[qh]
(;W[qk]
;B[sh]
;W[sj]
;B[pf]
;W[mk]
;B[ml]
;W[ll]
;B[mj]
;W[lk]
;B[nm]C[black  must come back because of the ladder at p8]
;W[mh]C[white makes the centre strong]
;B[qd]C[and black starts to live]
;W[qc]
;B[qe]
;W[rc]
;B[od]
;W[oc]
;B[pe]
;W[pc]
;B[nd]C[black has still only one eye
white  reduces the centre easily
]
;W[mm]
(;B[so]C[this generates unnecessary complications]
;W[nl]
;B[ol]
;W[pl]
;B[ml]
;W[pn]
;B[oi]
;W[ni]
;B[qn]
;W[ns]
;B[sn]C[this is a do or die move]
;W[pn]
;B[mi]
;W[nh]
;B[qn]
(;W[ph]C[if black answers this , there is  no big enough ko threat ]
(;B[rm]
;W[qg]C[Now white  is thicker and thus better
but the game is still playable
]
;B[nc]
;W[nf]
;B[ne]
;W[of]
;B[oe]
;W[ke]
;B[ob]
;W[pb]
;B[nb]
;W[rd]C[white has to make live in the corner]
;B[re]
;W[ra]
;B[kc]
(;W[cq]C[this invasion is normal
but it doesn't suit to this situation]
;B[dq]
;W[dr]
(;B[er]C[losing move]
(;W[br]
;B[ds]
;W[cr]
;B[eq]
;W[bn]C[white can jump one space more now]
;B[cn]
;W[bo]
;B[bm]C[there is still aji around b8]
;W[gj]C[white has won

he gets the corner and the centre now 
the left side is small now

]
;B[an]
;W[cp]
;B[hq]C[this one is not that big]
;W[cl]
;B[cm]
(;W[ej]
;B[di]
;W[el]C[the game is finished now
white wins by 11.5 points

(end of commentary of Young Sun Yoon)]
(;B[ek]
;W[fk]
;B[dk]
;W[gm]
;B[io]
;W[im]
;B[hi]
;W[fh]
;B[ei]
;W[gi]
;B[hh]
;W[jj]
;B[kh]
;W[kg]
;B[jg]
;W[kf]
;B[ji]
;W[dl]
;B[co]
;W[bp]
;B[kj]
;W[jk]
;B[fj]
;W[gk]
;B[jo]
;W[ir]
;B[jq]
;W[jr]
;B[iq]
;W[hr]
;B[gr]
;W[bk]
;B[bj]
;W[eg]
;B[dg]
;W[bd]
;B[be]
;W[bc]
;B[ef]
;W[aj]
;B[ck]
;W[bl]
;B[bi]
;W[hb]
;B[ib]
;W[ae]
;B[bf]
;W[nl]
;B[om]
;W[fn]
;B[fo]
;W[jb]
;B[jc]
;W[ia]
;B[ic]
;W[if]
;B[gh]
;W[fi]
;B[jm]
;W[jl]
;B[kr]
;W[kq]
;B[kp]
;W[lq]
;B[hs]
;W[lr]
;B[hn]
;W[hm]
;B[rf]
;W[pq]
;B[qr]
;W[en]
;B[kb]
;W[eo]
;B[do]
;W[ep]
;B[fp]
;W[jn]
;B[qh]
;W[lh]
;B[li]
;W[me]
;B[ij]
;W[ik]
;B[ld]
;W[ig]
;B[ih]
;W[le]
;B[ja]
;W[md]
;B[mc]
;W[kn]
;B[ko]
;W[rl]
;B[ln]
;W[lm]
;B[in]
;W[km]
;B[eh]
;W[fg]
;B[hf]
;W[ie]
;B[og]
;W[ng]
;B[hj]
;W[hk]
;B[ha]
;W[ps]
;B[qs]
;W[cs]
;B[af]
;W[es]
;B[fr]
;W[ai]
;B[ah]
;W[ak]
;B[ad]
;W[kd]
;B[lc]
;W[qi]
;B[qg]
;W[oa]
;B[na]
;W[pa]
;B[gc]
;W[fb]
;B[sd]
;W[sc]
;B[se]
;W[ao]
;B[am]
;W[sl]
;B[sm]
;W[jf]
;B[jh]
;W[mn]
;B[lo]
;W[ac]
;B[kk]
;W[jd]
;B[is]
;W[ks]
;B[ae]
;W[os]
;B[bh]
;W[ml]
;B[ej]
;W[em]
;B[gs]
;W[js]
;B[]C[white wins by 9.5 points])
(;B[]
;W[bd]
;B[be]
;W[bc]
;B[cf]C[necessary because of clamp]))
(;W[cg]C[may be this would work now]
;B[be]
;W[ei]C[also possible]))
(;W[cr]C[if white connects this way, ...]
;B[eq]
;W[bn]C[going this far is impossible]
;B[bo]
;W[co]
;B[cp]
;W[bp]
;B[bq]
;W[ao]
;B[br]))
(;B[cp]C[this would have been the last chance for black]
;W[br]
;B[bq]
;W[cr]
(;B[gj]C[white has  more territory, but black has  more potential
the left side becomes huge])
(;B[gq]C[later black can reduce the lower side easily])))
(;W[gj]C[ here feels better
it reduces the black moyo and develops the white centre]))
(;B[qg]
;W[pn]
;B[pq]
;W[om]
;B[rr]C[white leads]))
(;W[rm]C[white  can't connect..]
;B[rk]C[the white group is not alive
])
(;W[qg]C[this is also a correct  ko threat]))
(;B[rr]C[black  has to play here
then the game is playable for both
]))
(;W[rj]C[if white connects here...]
;B[pl]C[this would have been sente]))
(;B[qg]
;W[nf]C[may be, white  wants to capture
]
;B[oe]
;W[of]C[the white  can cut here 
this explains r14
]))
(;B[nk]
;W[oi]
;B[ph]
;W[oh]
;B[pg]
;W[og]
;B[pf]
;W[of]C[black collapses  or at least, lives very painful ])
(;B[oi]C[this would be a bad move, it just  helps white
]))
(;B[]
;W[oj]C[ladder is good for white , so there is a  cutting point left]))
(;W[pi]
;B[oj]
;W[qh]
;B[ri]
(;W[rh]C[is this good for white?
]
;B[rj]
;W[qk]
;B[ph]
;W[oi]
;B[ni]
;W[oh]
;B[pg]
(;W[og]
;B[qg]C[black wins])
(;W[rk]
;B[og]C[black wins]))
(;W[rj]C[this does not work too
]
;B[ph]
;W[oi]
;B[rh]
;W[qg]
;B[pg]
(;W[qf]
;B[ni])
(;W[ni]
;B[qf]))
(;W[ph]C[thats why this is the only possiblity for white in this situation, but still there is bad aji ...]
;B[rj]
;W[qk]
;B[rk]
;W[rl]
;B[rh]
;W[rg]
;B[sm]
;W[sl]
;B[pl]
;W[sh]
;B[sk]C[this yields a heavy ko 
now there is no ko threat for black, but later this would be a burden for white])))
(;B[rj]C[this would be painful for white
]
;W[qk]
;B[pi]
;W[nk]
;B[qf]
;W[mm]
;B[rr]LB[mk:B][nl:A]C[still there are cutting points in the white shape 
but black wanted influence...]))
(;B[pi]C[this is a better move for black here]
(;W[pk]
;B[ok]
;W[rh]
(;B[qi]C[you don't want to play here
]
;W[ri])
(;B[pg]))
(;W[qi]
;B[ph]
;W[qh]
;B[pg]
;W[qf]C[white connects, but ...]
;B[qe]C[bad aji for white]
;W[pe]
;B[qg]
;W[rg]
;B[rf])))
(;B[qf]
(;W[nc]
;B[qj]C[this variation is a black dream ...])
(;W[qi]C[... but white will pincer. 

this is  not good for black since  white  gets strong easily ])))
(;W[qi]C[this is the easy way]))
(;W[qm]
;B[or]C[not bad for black, normal sequence
]))
(;B[or]C[also good for black]))
(;W[qp]))
(;W[qp]
;B[op]
;W[pq]
;B[oq]
;W[pr]
;B[pm]
;W[rn]
;B[on]
;W[ro]
;B[lp]C[this is also joseki, but here good for black]))
(;AE[np]AB[nq]
;
;AE[nq]
;W[nq]C[normally, q5 is played in this situation]
;B[]
(;W[pn]
;B[oo]
;W[rn]
(;B[qp]
;W[qm]
;B[oq]
;W[np]
;B[op]
;W[or]
;B[pr]
;W[nn]C[one joseki])
(;B[oq]C[this is another possibility]
(;W[np]
;B[op]C[black saves the r4 atari, later p6 may be a better choice])
(;W[op]
;B[qp]
;W[no]
;B[ro]
;W[on]
;B[qm]
;W[pl]C[another joseki
])))
(;W[oo]
;B[pn]
;W[on]C[also possible (I didn't  this variation before)]))
(;W[oo]
;B[pn]
;W[on]C[looks good too]
(;B[pm]C[bad shape
])
(;B[pl]C[this doesn't work]
;W[pm]
;B[qm]
;W[om]
;B[qk]
;W[rl]C[black has two problems ]
(;B[ro]
;W[rn]
;B[qp]
;W[rm]
;B[qo]
;W[pk]
;B[ol]
;W[nl]
;B[ok]
;W[pj])
(;B[pk]
;W[rn]))
(;B[qp]
;W[pm]C[this is an easy solution for white 
])))
(;W[qq]
;B[qk]C[this joseki is too boring])
(;W[qm]C[this move is also possible
the side is here  more important than the corner
]))
(;W[cg]C[this is a good invasion afterwards]
(;B[dh]
;W[bd]
;B[be]
;W[ce]
(;B[de]
(;W[cf]
;B[bc]C[white fails])
(;W[bc]
;B[cf]C[white fails])
(;W[df]
;B[cf]
;W[bf]
;B[bc]C[white fails])
(;W[bf]
;B[ae]
;W[df]C[this gives a  happy ko  for white]
;B[ee]
;W[bc]))
(;B[bc]
;W[ee]
;B[ad]
;W[de]
;B[bd]
;W[bf]C[white kills black]))
(;B[be]C[this is the proper answer, b can still attack c13 later])))
(;B[hf]C[can black answer the peep like  this?]
(;W[ee]C[this white cut is dangerous])
(;W[ge]C[black can't answer at j15])
(;W[bd]
;B[be]
;W[ge]C[this is even better for white])))
(;B[gb]C[you can play there, but ...]
;W[fe]
;B[dg]
;W[he]C[now the sanrensei  moyo is not good any more ]))
(;W[gb]
;B[ea]
;W[fb]
;B[cb]
;W[ff]TR[eb][fb][gb][fc][fd]C[now white is not strong any more, his stones are heavy ]))
(;B[fb]
;W[gb]
;B[db]
;W[fa]
;B[cb]
;W[ff]C[good for white]))
(;B[fe]C[What happens if black plays here?
]
(;W[ec]
;B[ge]C[black is good])
(;W[gd]
;B[ec]
;W[eb]
;B[db]
;W[cb]
;B[fb]
;W[da]
;B[gb]C[black is good])
(;W[ge]C[this is the right answer]
;B[ec]
;W[eb]
;B[db]
(;W[cb]
;B[fb]
;W[da]
;B[gd]C[very good for black])
(;W[fb]
;B[cb]
;W[ee]
;B[ff]
;W[bc]
;B[bb]
;W[bd]
(;B[be]
;W[ce])
(;B[ce]
;W[be]
;B[cf]
;W[bf]
(;B[bg]
;W[cg]C[white can still cut])
(;B[cg]
;W[bg]
;B[bh]
;W[ab]C[white take the corner and is good]))))))
(;W[fb]
;B[ge]C[this is normal
]))
(;B[dc]C[This would be the wrong direction  for blocking
]
;W[cd]
;B[de]
;W[db]
;B[eb]
;W[cb]
;B[ec]
;W[cf]))
