(;FF[4]
CA[UTF-8]
GM[1]
GN[Becoming 9 kyu - Lesson 14]
PC[https://online-go.com/review/399392]
PB[Black]
PW[White]
BR[2d]
WR[2d]
OT[Error: time control missing]
RE[?]
SZ[19]
KM[6.5]
RU[Japanese]

;B[pd]
;W[qf]C[Hi! This is our last lesson on 4-4 josekis. We're going to look at pincers. In response to White's knight's approach, the pincer is the most severe answer.]
(;B[qh]C[There are several types of pincers. The one-point low pincer is the most powerful one. It pressures the single white stone severely.]
;W[qc]TR[qf]C[Instead of jumping out, which can get complicated, White can simply invade at 3-3 and take the corner. The 3-3 point is one of the weaknesses of the 4-4 point. By sacrificing the r14 stone, White can gain territory in the corner.]
;B[qd]C[Black has to separate White like this.]
;W[pc]C[Then White pushes here.]
(;B[oc]C[Some players worry about Black's hane. But it doesn't work well.]
;W[rd]C[Bending under is a good response.]
;B[re]
;W[rc]
;B[qe]
;W[nc]C[This clamp is the key move.]
(;B[od]C[If Black connects,]
;W[ob]LB[ob:B]LB[oc:A]LB[qe:C]C[White connects, too. And it's like the joseki except the AB exchange is good for White, and C is in a worse position.]
)(;B[ob]C[If Black resists,]
;W[od]TR[pd]TR[qd]TR[qe]TR[re]LB[rf:A]C[White will cut, and the four black stones look bad. You can imagine White playing at A.]
))(;B[od]C[In this case, this extension is the proper move.]
(;W[rd]C[After that, White hanes and connects.]
;B[re]
;W[rc]TR[qf]C[White's plan was to sacrifice the r14 stone, so these exchanges are ok.]
(;B[rf]C[At this point, linking under is sente.]
;W[nc]LB[oc:A]C[And pushing at A is too slow, so White instead should jump, because there are no weaknesses in White's position now. This is the end of the one-point low pincer joseki.]
;B[nd]C[Black shouldn't just push here to develop influence.]
(;W[mc]C[Because White gets more points when White extends here. ]
)(;AE[nd]C[How should Black play to enlarge his framework then?]
;AB[me]C[In this case, this knight's move is very nice.]
(;W[mc]C[If White answers here, the exchange is better for Black.]
)(;W[dp]C[Therefore, White often plays elsewhere.]
;B[mc]C[But then this attachment is a good forcing move.]
;W[oc]LB[nb:A]C[White has to answer like this or at A, and the exchange is profitable for Black. Remember this move!]
)))(;B[qe]
;W[nc]LB[rf:A]C[If Black connects directly, White can descend to A later and disconnect the stones, so pros aren't playing it much anymore.]
))(;W[nb]C[Jumping like this is also possible.]
)))(;B[pi]C[This is the two-point high pincer.]
(;W[qc]C[White can still invade at 3-3, and then the variation will be similar to the joseki we just saw.]
)(;W[of]C[Jumping here, however, is another option for White.]
;B[nd]C[If Black responds like this,]
;W[rd]C[White slides into the corner.]
;B[qc]C[Black has to protect the corner.]
;W[ri]C[After that, White can settle down with another sliding move. This is also a joseki.]
;B[pg]C[Later on, Black has some aji.]
;W[pf]C[After peeping,]
;B[rh]C[Black can attach here.]
;W[qh]
;B[qi]
;W[rg]
;B[rj]TR[rh]C[By sacrificing the marked stone, Black can develop the right side.]
;W[sh]C[On the other hand, White got to settle down, so the position is even. But you should play this joseki only when you don't mind Black gaining a big framework on the right side.]
))(;B[pj]C[This is the three-point high pincer.]
(;W[of]C[Can White jump now?]
;B[nd]C[Black will answer in exactly the same way as before. ]
;W[rd]
;B[qc]C[But it's hard for White to find the next move.]
(;W[rj]C[Can White slide all the way to here?]
;B[pg]
;W[pf]
;B[qi]C[In response, Black will peep and diagonal like this. It's hard for White to connect now.]
)(;W[qi]C[Because of that, White has to extend like this or r12 instead. If White plays here,]
;B[qj]C[Black can easily respond here, becoming stronger. White's r11 stone won't be useful.]
)(;W[qh]C[If White plays here,]
;B[qi]C[White's position will become over-concentrated.]
))(;W[qc]C[Instead of jumping, playing at 3-3 is a proper move.]
;B[qd]C[Then it's similar to the one-point low pincer joseki.]
;W[pc]
;B[od]C[This is the basic variation when White invades at 3-3.]
;W[rd]
;B[re]
;W[rc]
;B[rf]
;W[nc]C[Up to here, the shape is almost the same as the one-point low pincer joseki.]
;AE[pj]
(;AB[qh]C[In that joseki, Black can play elsewhere, because the pincer stone is close to the black group.]
)(;AB[pj]C[But now this stone is far away.]
(;AB[qg]C[Therefore, Black should defend here.]
)(;B[me]C[What if Black plays a knight's move now?]
(;W[qg]TR[qe]C[Then White will move this stone out, aiming to cut.]
;B[qe]
;W[ng]C[Then White will jump out. Black's position is thin, and the influence is gone.]
)(;AE[me]
;AB[qg]C[Because of that, it's better for Black to defend by bending here. I hope you'll remember how important this move is!]
))))))