(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]
RU[Japanese]SZ[19]KM[0.00]
PW[Hyukjun Kim]PB[Chaewon Son]C[Hello, How are you today? It has been a long time since my last lecture. I'm Jihee Baik, 2dan, professional Baduk player from Korea. 

I'm teaching students at Baduk Highschool, which was established in 2013. My students are not as strong as yungusaeng (insei) but they are studying Baduk hard and they enjoy Baduk very much. Some of them hope to teach Baduk abroad in the future!! 

The game I want to show today was played by the Frehsmen Hyukjun Kim and Chaewon Son. Hyukjun is the strongest player among the Freshmen. He likes to make mischiefs but he also enjoys teaching his friends Baduk and is very popular. He plays 9 Dan on the internet (about 7 Dan in Europe) and he tries to become a professional player. Chaewon is the strongest player among the female students at our school, playing about 5-6 Dan on the internet. She got to play Hyukjin in order to prepare for the National Amateur Women Championship. ]
;B[pd]C[Chaewon is Black.]
;W[dd]
;B[qp]
;W[dq]
;B[nq]
;W[qf]
;B[qi]C[This opening is Chaewon's style to aim for thickness and influence. I think she wants to use this opening in preparation for the championship.]
;W[nc]
;B[pf]C[
This joseki isn't often played these days but in 2010 it was a very popular joseki. White has two options to answer.]
(;W[qc]
;B[pc]
;W[pg]C[
The order of moves was changed.]
(;B[of]
;W[qd]
;B[qg]
;W[qe]
;B[pe]
;W[rg]
;B[qh]
;W[jd]C[The sequence up to this move was an opening that was very popular a while ago. Black needs to expand his framework on the right well.]
(;B[pb]LB[lc:A]C[This exchange is unnecessary, it is aji keshi, although the aim is clear. Black can invade more easily at for example A. However this move is always sente, and does not need to be played right now.]
;W[qb]
;B[cf]
;W[be]LB[ck:A]C[White plays the knight's move in order to attack actively. but now W is not good as there is no stone at left lower side  (around A)]
(;B[fc]LB[jd:B][cf:A]C[Hurrying to invade is not good because the Black A stone is not safe yet and White B is placed high, on the fourth line. There are many wide places and it was better to play according to the balance on the whole board. I think this invasion is too impatient.

]
;W[ec]
;B[fd]
;W[ef]C[This is a common move. It seperates black

]
(;B[hd]C[Slow]
;W[if]C[Black is in trouble because White seals him in with the knight's move.

]
(;B[ff]C[This is bad move because it helps White to become strong.]
;W[eg]
;B[gg]
(;W[mf]C[This move is too loose. White should solidly defend because Black is very thick nearby.
]
;B[lc]C[B's jump is good.]
;W[ld]
;B[kc]
;W[jc]
;B[kd]
;W[ke]
(;B[md]
;W[le]
;B[mc]
;W[nd]
;B[ne]
;W[me]
;B[jb]C[
This is not a good move, Black should just capture two stones at O18.]
;W[ib]
(;B[nb]C[Black can't connect at L18, so K18 became a very bad exchange.


]
;W[kb]
;B[lb]
;W[ja]
;B[gi]
;W[ei]
;B[ih]
;W[nf]C[
This is a mistake.]
;B[nh]C[
good move]
;W[lh]
;B[cl]
;W[cj]
;B[co]
;W[cp]
;B[do]
;W[fq]LB[jg:A][lg:B]C[Let's do a positional judgment. White has about 30 points on the upper side, in the upper right corner about 10 points, in the lower left corner about 10 points, in total 50 points.
In contrast Black has almost no territory except the right framework. That means he has to gain more than 50 points there. In addition, the black groups on the left and on the upper side are thin. In other words White is ahead. Black should exchange Black A in sente and then seal White in by using White's weaknesses.

]
;B[cc]C[
bad move]
;W[dc]
;B[fb]
;W[eb]
;B[ee]
;W[de]
;B[jq]C[The distance of this move is not good.
]
(;W[qn]C[
good invasion with the 3-4 point and large knight's move enclosure. ]
(;B[ql]C[Approaching here is normal, but
]
(;W[qq]C[This move means to live in the corner in order not to create a weak group.
]
(;B[pq]C[
If hane...]
;W[pp]
;B[rq]
;W[qr]
;B[rr]
;W[rp]
;B[qo]
;W[ro]
;B[po]
;W[pr]
;B[or]
;W[rs]C[This is a one-way-route (the only way to play).
]
(;B[ps]C[
mistake]
;W[oq]
;B[op]
;W[sq]
;B[pq]
;W[sr]C[Black had to make 50 points on the right side but when White lived comfortably the game was over. After that many more moves were played but the game was already decided. 
I think she felt nervous because I told her that I will introduce this game to many foreign Baduk fans. The level of their play is not very high, but I chose this game because in the upper right corner, upper left corner and lower right corner nice shapes emerged.
All of you, enjoy your games and I hope to see you next time again.]
;B[jo]
;W[lj]
;B[ep]
;W[eq]
;B[ll]
;W[hq]
;B[gp]
;W[ir]
;B[bj]
;W[bi]
;B[dj]
;W[ci]
;B[ck]
;W[ej]
;B[ek]
;W[gj]
;B[fk]
;W[fj]
;B[ij]
;W[gk]
;B[il]
;W[ni]
;B[nk]
;W[oh]
;B[gl]
;W[oe]
;B[og]
;W[oi]
;B[ph]
;W[pn]
;B[on]
;W[kr]
;B[jr]
;W[js]
;B[kq]
;W[hp]
;B[ho]
;W[lr]
;B[lq]
;W[pj]
;B[rh]
;W[sf]
;B[pm]
;W[rm]
;B[rl]
;W[bk]
;B[bl]
;W[aj]
;B[mr]
;W[fp]
;B[fo]
;W[gq]
;B[go]
;W[dp]
;B[bo]
;W[bp])
(;B[sr]C[Black has to endure.
]
(;W[oo]C[This is the best move for White.
]
;B[op]
;W[pn]
;B[pp]
;W[np]
;B[oq]
;W[pl]
;B[pk]
;W[no]
;B[mq]
;W[ol]C[White is safe.

])
(;W[sq]
;B[sp]
;W[so]
;B[op]
;W[sq]C[The result is a ko, which is burdensome for White.
])))
(;B[pp]C[
If Black extends...]
;W[rp]
;B[ro]
;W[rq]
;B[qo]
;W[or]C[White can live comfortably in the corner while making points.
]))
(;W[op]C[white has this common move.
]
(;B[oq]
;W[rp]C[
this attachment is good]
(;B[qq]
;W[on]
;B[]
;W[rq]C[White just needs to push to make shape.
]
;B[rr]
;W[qo])
(;B[rq]
;W[pp]
;B[qq]
;W[on]LB[ol:B][qo:A]C[White won't suffer any severe attack because he has A and B.

])
(;B[pp]C[If Black tries to resist, ...
]
;W[rq]C[White can play in the corner and has nothing to complain of.
]))
(;B[po]C[If Black resists,...

]
;W[oq]C[White can break through and Black won't be able to capture these stones.
])))
(;B[po]C[
good defense against the aji in the corner]
(;W[pn]C[
if  W answers...]
;B[ql]C[
B could play on both sides])
(;W[qk]
;B[pn]C[
if W extends, B's pressing move is good.])))
(;AE[jq]AB[hq]LB[er:A]TR[hq]C[Black should approach closely here in order to aim at A.
]))
(;B[kb]
;W[hc]C[Giving white this move is painful]))
(;B[le]
;W[md]
;B[je]
;W[kf]
;B[jb]
;W[ie]
;B[id]
;W[jf]
;B[ic]C[
B might consider playing this sequence but...]
;W[nh]LB[ef:A][eg:B]C[Black is not good because White's shape on the left is very nice (A, B) and the center is erased too.
]))
(;LB[ff:3][eg:2][gg:1]C[If you try a tewari, it becomes like this Black 1-White 2-Black3.]))
(;B[gg]
(;W[gf]C[
If  W cuts...]
;B[ff]
;W[fg]
;B[hf]
;W[fe]
;B[ge]C[
W is not good because W has no ko threat. ])
(;W[eg]C[White can calmly reinforce here and Black doesn't look good.
]))
(;B[hf]
;W[ig]
;B[hg]
;W[ih]
;B[de]
;W[ee]
;B[ed]
;W[dc]
;B[bf]))
(;B[ie]C[For Black it's good to stick out his head like this.
]
;W[je]
;B[if]
;W[jf]
;B[ig]LB[de:B][jg:A]C[This move makes miai of A and B
B is possible now that black is strong in the center.]))
(;B[bf]C[B can consider blocking here. But it's only good if black has a ladder]
(;W[ce]
;B[ef]
;W[fd]
;B[cj]C[
This sequence is good for B])
(;W[ci]C[White will pincer here. In this shape a ladder is important. Do you know which ladder?]
;B[cd]
;W[cc]
;B[ce]
(;W[dc]C[A soft move, black can live.]
;B[bc]
;W[bb]
;B[ab]
;W[bd]
;B[ac]LB[cb:A][bh:B]C[Black lives.
A and B are miai.])
(;W[bc]C[
W usually descends in order to attack.]
(;B[ed]C[Now, it's related to a ladder.
Black can only play here when the ladder favours black.]
(;W[de]
;B[dc]
;W[ec]
;B[db]
;W[eb]
;B[ee]LB[ed:A]C[This is the ladder. If there's a white stone on the lower side and the ladder doesn't work, Black can't play the clamp at A.
])
(;W[dc]
;B[ef]
;W[de]
;B[fg]
;W[ee]
;B[fe]
;W[df]
;B[dg]
;W[gf]
;B[ff]
;W[eh]
;B[eg]
;W[bh]
;B[ch]
;W[gc]C[Even though Black doesn't look good because of his clumping shape, White's territory is flat and he has many weaknesses in his shape on the left
]))
(;B[ef]C[ If the ladder is not good for Black, he should jump out, but the result is not good for Black.]
;W[fd]))))
(;B[dj]LB[fc:B][co:A]C[This is simple.
A and B are miai for Black.
In the current position playing flexibly and with composure is preferable I think. Since Black is thick, he can invade the upper white framework even if White defends it.  White can't expect to make it all to territory because there are so many points to invade.
There's a saying, when you play Baduk, you should look broadly at the whole board. A game of Baduk is not a series of local fights, so don't look only at one specific part of the board but consider the balance on the whole board board. Therefore I like Go Seigen's saying that Baduk is harmony. I think that these words describe Baduk the best.
All of you, I'd like to advise you to look broadly at the whole board and play with composure and flexibly. This might be more efficient than memorizing one or two joseki.
]
;W[cl]LB[do:A]C[
This is not good for W because the distance between the white stones on the lower left side and in the corner is too big. Black can still invade at A]))
(;B[ob]LB[pb:A]C[Later, black might get a stone here in a natural flow, and then would regret having played at A.]
;W[]
;B[qb]
;W[rb]
;B[ra]C[B]
;W[sb]C[Black would gain a bit more in endgame.]))
(;AE[pc][qc]AB[of]
;B[]
;W[qc]
(;B[qe]C[In the past this was the usual sequence])
(;B[pc]C[Now this is more common]))
(;B[qe]C[
Black can also block here to go against White's will.]
(;W[rg]LB[re:B][of:A]C[
This haengma is very good. You might think that you should play atari at A by all means but here it's better to omit it in order to leave aji. When White doesn't play atari at A, White can later hane at B and Black can't block.]
(;B[rf]
;W[qg]
;B[of]
;W[re]
;B[rd]
;W[sf]
;B[qb]
(;W[qj]C[This is a new joseki. This move makes sure of a connection])
(;W[qk]C[If white plays like this, white can still be cut!]
;B[qj]
;W[pk]
;B[oi]C[White is in trouble]))
(;AE[pc][qc][dd][qe][pf][pg][rg][qi][qp][dq][nq]C[
In this shape there is also a situation in which you should omit to play atari.]
;B[pf]
;W[pg]
;B[of]
;W[qe]
;B[qd]
;W[md]
;B[oc]
;W[ob]
;B[nd]
;W[nb]
;B[pb]
;W[mf]
;B[ng]
;W[qi]LB[qb:B][ne:A]C[
This is a joseki that is the result of a double approach. White doesn't play the atari at A in order to aim at B later.]))
(;W[of]C[
Of course, White's atari is also possible.]
;B[pe]
;W[rg]
;B[og]
(;W[ph]
;B[nf]
;W[re]
;B[rd]
;W[pi]
;B[oe]
;W[qk]
;B[kc]C[This is a joseki too.
White still has aji in the corner]
(;W[rc]C[White can live in the corner]
;B[se]
;W[pb]
;B[ob]
;W[qa]
;B[oc]
;W[rb])
(;W[]
;B[se]C[Therefore later this is a big move for black, to remove the aji]))
(;W[re]C[White can't connect to the corner]
;B[rd]LB[qd:A]C[black can block., there is no cut at A now]))))
(;W[pg]
;B[of]
;W[qc]
;B[qe]
;W[pc]
;B[rf]C[This is a basic joseki that has been used in the past very often. 
In the past it was not easy to get information about new moves. But now you can see the professional games live and everybody can find out fast. Now research is very active and it seems that popular joseki and openings are naturally developing faster and faster.
Therefore professional players often complain "as soon as I open my eyes in the morning, a new move has emerged."^^
For me, this huge number of new moves in joseki and openings reminds me of fashion.
There are not only completely new moves but also moves that had been played in earlier times and are transformed. Therefore, when you study Baduk, I think you should have a basic skills(robust ...) rather than knowing all new joseki and opening moves. This way, no matter what kind of move appears, you will find a way to handle it and have a playable game.]))
