(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]
RU[Japanese]SZ[19]KM[7.50]
PW[Zhang Zhengping]PB[Wang Chenxing]WR[3p]BR[5p]DT[2014-08-30]EV[5th Qionglong Shan Bingshen Cup, round 1]SO[Go4Go.net]RE[B+Resign]
(;B[ed]
;W[dp]
;B[pe]
;W[pp]
;B[kg]C[In episode 160 we showed this unusual opening that was invented by Wang Chenxing, one of the top female pros in China. Today we will have a look at another novelty opening of her, which she played very recently for the first time.]
;W[kc]LB[kg:A]SQ[pe]C[In this opening white always invaded the top, and black tried to fight, using the stone at A.

Note that white invades the top, because the marked black stone is in a high position. White has space to breathe.])
(;B[od]
;W[pp]
;B[ec]
;W[cp]
;B[jh]LB[ec:A][de:B]C[In this new opening, the stone that was placed high at B is now low at A. This makes a big difference at the top: white will not invade the top, because that would lead to a severe attack, but will approach the corner instead.

For the 5th Qionglong Shan Bingshen Cup she decided to prepare something new.
She used it successfully in the 1st round against Zhang Zhengping. Zhang is the niece of O Rissei, 9p and currently one of the strongest female pros in Taiwan.
Wang played the same fuseki in round 2 (we will review this game later). Fuseki was also successful, but later she made some mistakes in fighting and lost to one of the top Chinese pros Yu Zhiying , 5p

According to my database, this fuseki was never used by other professionals

]
(;W[de]C[In both games W played this kakari. It's a good idea to choose high move here -]
(;B[cc]TR[de]C[Black wants to keep the marked stone weak -]
;W[cd]
;B[bc]
(;W[ci]LB[ch:B][dh:A]C[Joseki, but I feel that this move is bad. I would prefer high extension at A.
In our second example Yu Zhiying, 5p played at B, which is also better than the real game]
(;B[eg]C[Good idea! -]
(;W[ed]C[Brave answer, but it's dangerous! -]
(;B[cg]C[Sharp move! -]
(;W[fc]C[White can get a ko, but as always it's hard to win ko in fuseki -]
;B[dc]
(;W[fd]C[It looks heavy -]
;B[id]C[Now pincer works well! White's group cannot be killed, but B wants to get profit by attacking]
;W[be]
;B[cf]
;W[ce]
;B[eb]C[Necessary. Because if W plays here, she can kill the corner]
;W[gf]
;B[gg]
;W[hg]
;B[ff]
;W[gh]
;B[fg]
;W[ge]
;B[hh]
;W[ih]
;B[hi]
;W[ig]
;B[ii]TR[jh]C[Black successfully used the marked stone]
;W[ie]
;B[hd]
;W[jg]
;B[kh]
;W[kd]
;B[gb]
;W[jd]
;B[qn]
;W[np]
;B[ib]
;W[of]LB[lf:A]C[White thinks that she is behind, so she played actively, but it's a bad move.
It's more important for White to defend weak dragon first, for example at A]
;B[kg]
;W[kf]
;B[jf]
;W[he]
;B[lf]C[Black wants to keep W seperated]
;W[ke]
;B[if]
;W[hf]
;B[md]TR[of]C[Now we can see that the marked stone was bad. It's too close to B's thickness]
;W[me]
;B[le]
;W[ld]C[White wants to create aji for future]
;B[mg]
;W[mc]
;B[nd]
;W[nb]
;B[pc]
(;W[pj]LB[kb:A]C[Of course, White can live by defending at A, but -]
(;B[lb]C[Nice tesuji! -]
;W[kb]
;B[ka]
;W[ja]C[Now W can only get a ko fight
In Japan they call it "hanami ko" - ko dangerous for one side and not dangerous at all for another]
;B[kc]
;W[la]
;B[jb]
;W[lc]
;B[ka]
;W[fb]
;B[fa]
;W[kb]
;B[qp]
;W[qq]
;B[ka]
;W[ic]
;B[hc]
;W[kb]
;B[po]
;W[jc]
;B[pq]
;W[op]
;B[qr]
;W[rq]
;B[or]C[W saved big group, but the price was too high. Black is clearly favourable here - game is almost over.
We will stop here and check the game, played by Wang in the next round
]
;W[on]
;B[mq]
;W[nr]
;B[nq]
;W[oq]
;B[pr]
;W[mr]
;B[mp]
;W[lq]
;B[lp]
;W[kq]
;B[rp]
;W[mn]
;B[kp]
;W[jp]
;B[ln]
;W[lm]
;B[kn]
;W[iq]
;B[jr]
;W[jq]
;B[nm]
;W[nn]
;B[mm]
;W[om]
;B[ll]
;W[nl]
;B[km]
;W[nh]
;B[qf]
;W[qg]
;B[rg]
;W[rf]
;B[re]
;W[pf]
;B[sf]
;W[qe]
;B[qd]
;W[rf]
;B[gq]
;W[rd]
;B[qf]
;W[rr]
;B[ns]
;W[lr]
;B[rs]
;W[rf]
;B[ir]
;W[se]
;B[ep]
;W[mf]
;B[dn]
;W[cn]
;B[dm]
;W[cm]
;B[dl]
;W[jj]
;B[ji]
;W[lj]
;B[lk]
;W[kj]
;B[mj]
;W[mi]
;B[nk]
;W[li]
;B[ik]
;W[jl]
;B[im]
;W[il]
;B[hl]
;W[hk]
;B[ij]
;W[hm]
;B[gl]
;W[jm]
;B[jn]
;W[in]
;B[jk]
;W[hq]
;B[hr]
;W[fl]
;B[gk]
;W[gm]
;B[fn]
;W[ek]
;B[fm]
;W[gj]
;B[hj]
;W[gp]
;B[fq]
;W[fk]
;B[hk]
;W[kk]
;B[kl]
;W[im]
;B[lg]
;W[ng]
;B[fi]
;W[ml]
;B[mk]
;W[ol]
;B[io]
;W[ho]
;B[gn]
;W[hn]
;B[jo]
;W[bb]
;B[cb]
;W[ei]
;B[ok]
;W[pk]
;B[cl]
;W[ae]
;B[ac]
;W[fj]
;B[gi]
;W[bh]
;B[cr]
;W[br]
;B[dr]
;W[bl]
;B[bk]
;W[am]
;B[cj]
;W[dj]
;B[bi]
;W[ai]
;B[bj]
;W[ch]
;B[aj]
;W[cq]
;B[bg]
;W[ag]
;B[ah]
;W[os]
;B[sq]
;W[ai]
;B[al]
;W[ak]
;B[ah]
;W[dk]
;B[al]
;W[eh]
;B[fh]
;W[ak]
;B[dh]
;W[di]
;B[al]
;W[lo]
;B[mo]
;W[ak]
;B[nf]
;W[ne]
;B[al]
;W[no]
;B[ko]
;W[ak]
;B[oe]
;W[nf]
;B[al]
;W[bm]
;B[af])
(;B[kb]
;W[lb]
;B[kc]
;W[lc]
;B[ob]
;W[na]C[This way W can live easily]))
(;W[kb]
;B[pj]C[Black's lead would be clear]))
(;W[ge]C[I would prefer this shape. It's more flexible]
;B[fb]
;W[gc]
;B[gb]
;W[ic]C[Comparing to the real game, White's group is much more solid]))
(;W[dc]
;B[db]
;W[eb]
;B[dd]
;W[dh]
;B[dg]
;W[dc]
;B[fc]
;W[cb]
;B[dd]C[Black will not answer any ko threats]))
(;B[fc]
;W[cg]LB[fe:A]C[This is passive for Black. She can only connect at A with bad aji (too many cutting points)]))
(;W[cg]
;B[ee]
;W[ed]
;B[fd]
;W[dd]
;B[dc]
;W[ef]
;B[ff]
;W[fe]
;B[ge]C[This was the plan of Wang, 5p. Now Black has great thickness]))
(;B[fe]C[Keima is the common shape, but it has some weak points. For example -]
;W[ed]
;B[fc]
;W[dc]
;B[db]
;W[cb]
;B[bb]
;W[fd]
;B[gd]
;W[ge]C[Later White may try to use these cutting points, Aji here is really bad]))
(;W[dh]C[With high stone here it would be difficult for Black to create moyo on the top]))
(;B[cd]
;W[ce]
(;B[bd]
;W[fe]
;B[ed]
;W[ee]
;B[be]
;W[cg]TR[od][jh]C[It's a common joseki. Comparing to real game, Black's corner is much bigger, but now W is solid.
It's not a good choice for B, because now he is not able to use marked stones. Black has no moyo and no groups to attack])
(;B[dd]
;W[ee]
;B[fd]
;W[ci]TR[jh]C[Another joseki, but again it's hard to say that marked stone is effective]))
(;B[ee]C[Black may think about this attachment]
;W[ef]
;B[fe]
;W[dd]
(;B[dc]LB[cc:A][di:B]C[Here White has 2 choices. A and B. Both are in joseki dictionaries, but it's better to choose B now -]
(;W[di]C[A good choice for white.]
;B[cc]TR[jh]C[Now White has sente and it's unclear, if the marked stone useful or not])
(;W[cc]C[Bad joseki choice.]
;B[df]
;W[cf]
;B[dg]
;W[cg]
;B[dh]
;W[ch]
;B[di]TR[jh]C[Locally it's a joseki too, but now the marked stone works better, so it's better for White to avoid this pattern]))
(;B[df]C[Joseki too. But this is only for special cases. Usually it's bad for B, because it gives W too many points in the corner -]
;W[cf]
;B[dg]
;W[cg]
;B[dh]
;W[dc]C[Corner is too big])))
(;W[cd]C[If White plays low kakari, ]
(;B[de]C[Black can press here and create huge moyo or ...])
(;B[df]
;W[ed]
;B[dd]
;W[de]
;B[dc]
;W[ce]
;B[ee]TR[od][jh]C[Black may consider complicated taisha joseki. In case of big fight, it looks possible for Black to use her marked stones. There are 1000+ josekis here. We will show only one possibility]
;W[fd]
;B[cc]
;W[cf]
;B[ef]
;W[ch]
;B[gb]
;W[hd]
;B[eh]TR[od][jh]C[Here is the most common joseki. You can see that White's group on the top is under big pressure.
Marked stones are so useful!
]))
(;W[ee]C[If White wants to destroy the moyo, he may try high kakari. It's unusual, but here it's a good choice -]
;B[de]
;W[df]
;B[ce]
;W[cf]
;B[ed]
;W[fe]
;B[bf]
;W[bg]
;B[be]
;W[ch]C[Black's moyo is destroyed, but she is also fine, because the corner is big])
(;W[ce]C[To keep things easy. ]
;B[cc]
;W[ch]C[Another good idea. White may use far kakari, if he wants to prevent complicated josekis]))
(;B[od]C[5th Qionglong Shan Bingshen Cup, round 2
DT[2014-08-31\]
PB[Wang Chenxing\]BR[5p\]
PW[Yu Zhiying\]WR[5p\]
KM[7.5\]RE[W+R\]]
;W[pp]
;B[ec]
;W[dp]
;B[jh]
(;W[de]C[White may also consider to invade the upper right instead]
;B[cc]
;W[cd]
;B[bc]
;W[ch]LB[ci:A]C[If you remember, W played at A in the previous game]
;B[ee]C[Now it's harder for Black to seal this group]
;W[ef]
;B[fe]
;W[mc]C[San-san invasion is attractive too]
;B[kc]
(;W[me]C[It looks heavy -]
;B[nc]
(;W[mb]C[Heavy too -]
;B[of]
;W[mg]
;B[lf]
;W[mf]
;B[oh]
;W[mi]
;B[lh]
;W[mh]
;B[oj]C[I don't like this result for W, but later B made some mistakes in fighting and lost the game.
We will stop the review here]
;W[pc]
;B[nb]
;W[qe]
;B[pd]
;W[qd]
;B[qc]
;W[qb]
;B[rc]
;W[pb]
;B[qf]
;W[rf]
;B[qg]
;W[mk]
;B[rb]
;W[ra]
;B[sd]
;W[rd]
;B[sb]
;W[qa]
;B[re]
;W[pe]
;B[oe]
;W[se]
;B[pf]
;W[sc]
;B[lj]
;W[mj]
;B[sd]
;W[dc]
;B[db]
;W[sc]
;B[po]
;W[sa]
;B[oo]
;W[nd]
;B[qp]
;W[ol]
;B[ql]
;W[kq]
;B[cn]
;W[co]
;B[dn]
;W[fp]
;B[cj]
;W[dd]
;B[fb]
;W[bd]
;B[ej]
;W[eh]
;B[bi]
;W[bh]
;B[hq]
;W[cl]
;B[bl]
;W[nq]
;B[oq]
;W[np]
;B[op]
;W[ho]
;B[eq]
;W[ep]
;B[fq]
;W[dq]
;B[jr]
;W[jq]
;B[kr]
;W[lr]
;B[iq]
;W[ks]
;B[is]
;W[jo]
;B[dr]
;W[cr]
;B[ds]
;W[fs]
;B[fr]
;W[cs]
;B[gs]
;W[gr]
;B[es]
;W[bm]
;B[bn]
;W[bk]
;B[dl]
;W[ck]
;B[dk]
;W[bj]
;B[ci]
;W[ai]
;B[fn]
;W[kd]
;B[jd]
;W[ke]
;B[in]
;W[io]
;B[hn]
;W[go]
;B[gn]
;W[ij]
;B[jj]
;W[jk]
;B[ik]
;W[ji]
;B[kj]
;W[ih]
;B[jg]
;W[ig]
;B[jf]
;W[je]
;B[if]
;W[id]
;B[ki]
;W[qj]
;B[ri]
;W[rj]
;B[pk]
;W[rh]
;B[rg]
;W[qi]
;B[sg]
;W[rl]
;B[rm]
;W[qm]
;B[ko]
;W[pl]
;B[qk]
;W[ok]
;B[bq]
;W[kn]
;B[jp]
;W[jn]
;B[ln]
;W[lm]
;B[rk]
;W[pj]
;B[sl]
;W[oi]
;B[lo]
;W[mm]
;B[mn]
;W[il]
;B[hk]
;W[qn]
;B[rn]
;W[or]
;B[pr]
;W[kp]
;B[ip]
;W[nn]
;B[no]
;W[mp]
;B[on]
;W[lp])
(;W[oe]C[This is more flexible]
;B[pe]
;W[of]C[Easier for White to get sabaki]))
(;W[pc]
(;B[oc]
;W[pd]
;B[oe]
;W[ob]
;B[nb]
;W[pb]
;B[nc]
;W[qf]C[I would prefer this for W])
(;B[pd]
;W[oc]
;B[nd]
;W[qc]
;B[md]
;W[mb]C[Also looks fine for White]))
(;W[qd]
;B[ob]
;W[pf]
;B[of]
;W[og]
;B[nf]
;W[pg]
;B[mh]C[Not a good plan for White. Black's territory on the top is too big]))
(;W[qd]
;B[pf]C[This one is bad for White]
;W[oc]
(;B[nc]C[Black can play for moyo here or -])
(;B[pc]
;W[pd]
;B[qc]
;W[rc]
;B[rb]
;W[rd]
;B[ob]
;W[nc]
;B[nb]
;W[mc]
;B[oe]TR[ec][jh]C[He can fight actively and use marked stones. Locally it's a joseki, but now the fight looks dangerous for White]))
(;W[qc]C[Invasion at 3-3 is a great choice for White]
(;B[qe]
;W[oc]
;B[nc]
;W[pd]
;B[pe]
;W[nb]
;B[nd]
;W[mb]
;B[rc]
;W[rb]
;B[pb]
;W[pc]
;B[rd]
;W[sb]TR[ec][jh]C[Locally this joseki is slightly better for Black. But now W is favorable, because he made marked stones useless. It's better for Black to try something different])
(;B[pc]
;W[qd]
;B[pe]
;W[rf]LB[pc:C][qc:D][od:A][qd:B][pe:E][rf:F]C[If Black wants to keep top side, she can use this joseki, but ..

If we look at this result by using tewari analysis, we can come to the conclusion that it's a bit bad for black.
]
;AE[pc][qc][qd][pe][rf]
;W[qd]C[We could come to the same endresult like this, as if white would have started the invasion at 3-4.]
;B[pc]C[Now this exchange feels very bad for black.]
;W[qc]C[Usually such a block is great for white. It is aji keshi for black.]
;B[pe]
;W[rf]LB[pc:A][qc:B]C[So if we look at this position in this light, we saw that exchanging black A for white B is very bad for white, thus the result seems to favor white.])
(;B[pe]C[I think, this is best for Black]
;W[ob]
;B[nc]
;W[re]
;B[qf]C[Black can create big moyo by using this joseki. But White is playable here]))
(;W[mc]C[Another attractive idea ]
(;B[jd]
;W[pc]C[This famous tesuji works now]
;B[oc]
;W[pd]
;B[oe]
;W[ob]
;B[nb]
;W[pb]
;B[nc]
;W[qf]C[Great result for W!])
(;B[ob]
;W[id]C[This is fine for both]))))
