(;GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]
RU[Japanese]SZ[19]KM[0.00]
PW[백 Cho Hye Yeon 9p]PB[Baduk Movies]
;B[pd]
;W[dd]
;B[qp]
;W[dp]
;B[oq]
;W[qf]
;B[nc]
;W[rd]
;B[qg]
;W[pg]
;B[qh]
;W[pf]
;B[qc]
;W[pk]
(;B[pj]C[If black attaches here...
]
;W[oj]
;B[oi]
;W[pi]
;B[ph]
;W[oh]
;B[qi]
;W[ni]C[We can expect this sequence.
]
;B[ok]
;W[nj]
;B[qk]
;W[pl]
;B[ol]
;W[ql]
;B[rk]
;W[pi]
;B[qj]
;W[om]
;B[mk]C[As I said earlier in the previous lecture, this fight is difficult for both. 
])
(;B[qj]C[This move is also very interesting.
]
(;W[pj]C[This is possible]
;B[ph]
;W[oh]
;B[qk]
;W[pl]C[When white plays here, black can choose between a simple variation which is good enough for black or a complicated one.]
(;B[rf]
;W[re]
;B[rg]
;W[ng]
;B[qe]C[Many pros feel that black's territory is a little bit better than white's influence. But it is playable
])
(;B[og]C[This move is severe! 
]
(;W[rf]C[This move is not good.]
;B[oi]
;W[nh]
;B[pi]LB[nf:A]C[Black cuts white apart. Even though white can capture blacks cutting stone at A, this is good for black

])
(;W[pi]C[If white plays here to prevent being cut.. this is not good for white either.
]
;B[nh]
;W[oi]
;B[rf]C[After that...
]
(;W[re]C[This is an overplay]
;B[rg]
;W[of]
;B[ng]
;W[nf]
;B[qe]
;W[lf]
;B[lh]C[Black feels great! 

])
(;W[qi]
;B[ri]
;W[rj]
;B[rh]
;W[rk]
;B[of]C[Black is quite satisfied with the result!
]))
(;W[nh]LB[og:B][oi:A]C[Extending here is the only move and leads to a joseki. This is a dual purpose move, it works in two directions. It makes the cut at A less attractive for black and puts pressure on the blacks cutting stone at B ]
;B[rf]
;W[re]
;B[rg]
(;W[nf]
;B[qe]
;W[pe]
;B[qd]
;W[dj]C[This is a joseki.
])
(;W[pe]LB[qe:A]C[Defending here or at A would be an overplay for white. White gets a weak group and becomes heavy (if white manages to escape)]))))
(;W[oi]C[If white plays here...
]
(;B[qk]C[This move is not good for black, black becomes too low.]
;W[pl]
;B[ql]
;W[pm]C[This is not good for black. Overall, white has a beautiful shape.
]
(;B[ph]
;W[oh]
;B[og]C[If black cuts here...
]
;W[oe]
;B[ng]
;W[me]C[White can deal with it! 
]
;B[lg]
;W[rf]
;B[qm]
;W[ke]
;B[mi]
;W[mk]
;B[nj]
;W[pi]
;B[qi]
;W[nk]C[White can lead the battle! 
])
(;B[rf]
;W[re]
;B[rg]
;W[rc]
;B[kc]
(;W[md]C[This move is a ladder-breaker.If it were not for this move...
]
;B[mc]
;W[cj]
;B[ph]
;W[oh]
;B[og]
;W[ng]
;B[of]
;W[oe]
;B[nf]
;W[mf]
;B[ne]
;W[nd]C[The ladder is good for white now])
(;W[cj]
;B[ph]
;W[oh]
;B[og]C[White should be cautious of this.
])))
(;B[pj]C[So black should fight!]
;W[oj]
;B[ok]C[If black cuts here...
]
(;W[qk]
;B[rk]
;W[rl]
;B[rj]
;W[pm]
;B[nk]C[This is one of the variations I saw at the study session from Korean young professional players. 
]
(;W[qo]LB[ql:A]
;B[po]
;W[qn]
;B[rp]
;W[nm]C[This is very challenging. Will you try it? 
]
(;B[oh]C[This does not work]
;W[ph]
;B[pi]
;W[nh]
;B[og]
;W[of]C[This is black's hallucination.
])
(;B[rf]
;W[re]
;B[rg]
;W[pe]C[We can also expect this variation.
]
(;B[ph]
;W[oh]
;B[og]
;W[od]
;B[ng]
;W[oc]
;B[oe]
;W[pc]
;B[qd]
;W[qb]C[White takes the corner. 
])
(;B[lk]
;W[od]
;B[oc]
;W[pi]
;B[rm]
;W[sl]
;B[sk]
;W[qm]
;B[qi]
;W[lm]C[White can fight! 
]))
(;B[ph]C[Black should play here]
;W[oh]
;B[og]C[This move is very interesting.
]
(;W[ng]
;B[of]
;W[oe]
;B[nf]
;W[pe]
;B[mf]
;W[mi]
;B[rf]C[White is in trouble now.
])
(;W[rf]C[What will happen?
]
;B[ng]
;W[mi]
;B[rm]C[This move is quite essential.
]
(;W[sl]
;B[sk]
;W[qm]
;B[si]
;W[rc]
;B[lk]C[This is of course very difficult!
])
(;W[ql]C[If white plays here...
]
(;B[sl]
;W[sk]
;B[sj]
;W[rn]
;B[sn]
;W[so]
;B[ro]
;W[sm]C[The ko is hard to play for black
])
(;B[sk]C[This move is good to make life.
]
;W[rg]
;B[sl]
;W[rn]
;B[sn]
;W[so]
;B[sm]C[Black can connect with the corner.
]
;W[ro]C[White can not play here]
;B[qm]
;W[pl]
;B[pn])))))
(;W[nm]C[If white plays here without any exchange, ]
;B[ph]
;W[oh]
;B[og]C[White is in danger now.
]
;W[rf]
;B[ng]
;W[mi]
;B[ql]C[Black can still cut here, so black is easily alive.]
;W[pl]
;B[qm]
;W[qn]
;B[rm]))
(;W[pm]
(;B[nk]
;W[qk]C[Same thing happens!
])
(;B[pl]
;W[ol]
;B[qk]
;W[nk]
;B[om]
;W[pk]
;B[ql]
;W[nm]
;B[on]
;W[nn]
;B[oo]
;W[lc]C[Another variation - hard to say who's better.
]))))
(;W[pi]C[We will talk about this move another time]))
(;B[ph]C[Last week we had a look at this]
;W[oh]
;B[oi]
;W[pi]))