(;FF[4]
CA[UTF-8]
GM[1]
GN[Becoming 9 Kyu - Lesson 22]
PC[https://online-go.com/review/410900]
PB[Black]
PW[White]
BR[2d]
WR[2d]
OT[Error: time control missing]
RE[?]
SZ[19]
KM[6.5]
RU[Japanese]

;B[qd]
;W[od]LB[pf:A]LB[qf:B]LB[pg:C]LB[qg:D]C[Hi! We're going to look at responses along the side to White's high approach to the 3-4 point.]
(;B[pf]C[This move doesn't intend to attack White. Instead, it aims to secure the corner, as well as the right side.]
;W[qc]C[In response, this attachment is a proper move.]
(;B[rc]C[And Black usually responds with this hane. This hane is a proper move.]
;W[pc]C[Then White has to connect here.]
(;B[re]LB[kc:B]LB[lc:A]LB[ld:C]C[Now, this tiger's mouth is a nice and solid move. After that, White can choose between some extensions. ]
;AW[lc]C[This is the completed joseki. It is one of the basic josekis of the 3-4 point. Since this joseki often appears in actual games, you should learn it.]
)(;B[rb]C[Sometimes this move is played, too. It applies more pressure to these white stones.]
;W[qh]C[But this approach will be a threat for Black later.]
;AW[qe]C[After that, this attachment will be severe. So the descent is played in special circumstances. In general, the tiger's mouth is more common.]
)(;B[qe]
;W[rb]
)(;B[lc]C[In some cases, you may want to pincer here and not play a defense at all. This idea is when the top side is important, and you are willing to trade the corner for influence.]
(;W[qe]C[White clamps here to exploit the lack of connection.]
;B[pe]C[Black covers.]
;W[rd]C[Playing atari from underneath allows White to capture a stone.]
;B[pd]
;W[rb]C[After this, the R15 stone is not important, so...]
;B[oc]C[Black will cut here.]
;W[ob]C[White should atari here, and]
;B[nc]C[Black completes the trade by stretching out here. This pattern is useful when you need influence fast and can make a trade for the corner area.]
;W[nb]C[If White pushes here,]
;B[nd]LB[oe:A]LB[nf:B]C[Just grip the cutting stone. White can't make it a ladder because the net at B is working.]
)(;W[rb]C[If White tries this move when the Q14 stone is in play,]
;B[ne]C[Black has the option of linking up stones here. In any event, it's a mistake for White to just take the corner area when White could have cut and made a bigger gain. bewhen White could have cut and made a bigger gain.]
)))(;B[pc]C[How about this move? Can Black resist like this?]
;W[pd]C[If White cuts here, Black is in trouble.]
;B[qb]C[Black should atari.]
;W[rc]C[Then White will come out here.]
;B[rb]C[After that, blocking here is the best response for Black.]
;W[oc]C[But White will simply exchange this atari first.]
;B[pb]
;W[qe]C[Then sacrificing these two stones is a good strategy.]
;B[rd]
;W[re]C[Black has no choice but to capture them.]
;B[sc]
;W[qg]C[White jumps here. What do you think about the result? Black gained about ten points in the corner. In contrast, White got good influence on the outside, weakening the black stone. It isn't good for Black. Therefore, Black can't get a good result by cutting at Q17. Cutting White is an overplay at the moment.]
)(;B[pd]C[How about this bump?]
;W[pc]C[Since Black can't cut White immediately, it's a failure too. Some players at kyu level play this kind of bumping move often. There is a Go proverb, "Hane at the head of two stones." Black, however, bumped into White's hane in this case. It's bad for Black. In many cases, bumping is not recommended. If possible, try to avoid it.BSince Black can't cut White immedieately, it's a failure too. SOme players at kyu level play this kind of bumping move often. There is a Go proverb, "Hane at the head of two stones." Black, however, bumped into White's hane in this case. It's basdd for Black. In many cases, bumping isn not recommended. If possible, try to avoid it.]
))(;B[qf]C[Let's look at some similar patterns. The nice aspect is that they are all similar. If you know the joseki variations for Q14, you can figure the others out, too.]
;W[qc]C[White attaches here. It's the only move. All other moves lead to loss and concede the corner to Black.]
(;B[rc]LB[pf:A]LB[qf:B]C[Black should still bend here. Compared to when B is at A, the stone at B is lower and occupies an even weaker position for fighting. So cutting is also not ideal here.]
;W[pc]LB[re:A]C[White again draws back. And here, for White, A would be a bit slow, since there’s no cutting weakness as Black didn’t play a knight's move susceptible to cutting.]
(;B[rb]LB[kc:B]LB[lc:A]LB[kd:D]LB[ld:C]C[So Black can just stretch into the corner here. Then White gets a choice of extension again.]
;W[lc]C[This is the completed joseki for the R14 point. It’s similar to the joseki for the Q14 point. But tiger's mouth isn’t the best response here, because there was no cutting weakness to guard. Also there’s no trade sequence. Except for that, the sequences are identical.]
)(;B[lc]C[If Black tries to trade, it won't work well.]
;W[rb]C[White will just settle in the corner.]
;B[re]C[Then Black feels like making eye shape here.]
;W[sc]C[But White can atari and destroy the eye shape. Now Black's best option is to extend along the side or play elsewhere.]
;B[rd]C[Connecting this isn’t advisable.]
;W[qi]TR[rc]TR[qd]TR[rd]TR[re]TR[qf]C[Black has no clear eyes and will be attacked severely.]
))(;B[pc]C[If Black cuts,]
;W[pd]C[Cross cut is necessary.]
;B[qb]C[Black will still atari from this direction.]
;W[rc]C[White will still stretch out here. Up to here it's all the same.]
(;B[rb]
;W[oc]
;B[pb]
;W[qe]
;B[rd]
;W[re]
;B[sc]
;W[pf]C[The variation goes like this. As you can see, the result is a bit worse than for the previous cutting variation.]
)(;B[rd]C[This move is a bit better in this sequence, where the R14 stone is low.]
;W[pb]C[White must respond here to live in the corner.]
;B[oc]
;W[rb]
;B[ob]
;W[qa]C[White can make two eyes like this.]
;B[mc]C[Then Black must defend these three stones. If the game goes like this, there will be heavy fighting for the life of the two cutting stones. In general, kyu players should learn the simpler variations and not try to complicate the game too much.]
)))(;B[qg]C[I heard this was also seen in your games sometimes.]
;W[qc]C[Attaching is still the key first move.]
;B[rc]C[Black will bend as usual.]
;W[pc]C[White draws back.]
(;B[re]LB[kc:B]LB[lc:A]LB[ld:C]C[Black makes a tiger's mouth. And White has a choice of extension again.]
;W[lc]C[This is a completed joseki. See how easy it is to play other moves if you know the first variation.]
)(;B[lc]C[If Black pincers when the R13 stone is in play,]
(;W[rb]C[White will take the corner.]
)(;W[re]
;B[rd]
;W[pf]C[Black has to be careful about this weakness. But right now, it doesn't work.]
;B[qf]
;W[qe]
;B[pe]C[Black can capture two stones this way. But if White gets any outside stones, the situation might change. That's why I recommend that you play tiger's mouth to avoid bad aji.]
)(;W[of]C[If White plays here, for example, it would activate the bad aji.]
(;B[re]C[So you should play tiger's mouth immediately.]
)(;B[le]C[Otherwise,]
;W[re]
;B[rd]
;W[qf]C[Black collapses.]
)))(;B[rb]C[Also, stretching here is less good when the first stone is at R13.]
;W[qe]C[This clamp is annoying.]
;B[re]
;W[pd]
;B[rd]
;W[qf]
;B[rf]
;W[pg]
;B[qh]
;W[kd]C[It's not good to give up influence for second-line territory. The second line isn't profitable enough to make the exchange worthwhile.]
)))