(;FF[4]
CA[UTF-8]
GM[1]
GN[Becoming 9 Kyu - Lesson 54]
PC[https://online-go.com/review/477681]
PB[Black]
PW[White]
BR[2d]
WR[2d]
OT[Error: time control missing]
RE[?]
SZ[19]
KM[6.5]
RU[Japanese]

(;B[pe]C[Hi! Let's explore some 5-4 josekis. There are many reasons to know 5-4 josekis. First, you might want to play a side-focused game and take outward influence. Second, your opponent might play 5-4, and you should know how to answer. Third, your opponent might ignore a high approach to a 3-4 or 3-3 point, and that situation would resemble a 5-4 pattern. Because of this, 5-4 josekis are worth remembering!

The main purpose of a 5-4 play is to make influence toward one side. Here, this 5-4 point makes influence facing the right side of the board. Because of the properties of the 5-4 point, the right side area will likely become Black's area of influence, and later on be useful for attacking. It may also become territory at the end of the game. In exchange for this influence, you should know that the 5-4 point also invites your opponent to occupy the corner.influence facing the right side of the board. TBecause of the properties of the 5-4 point, the right side area will likely become Black's area of influence, and later on be useful for attacking . It may also become territory at the end of the game. In exchange for this influence, you should know that the 5-4 point also invites your opponent to takeoccupy the corner.

-- chat --
jillgoodgal: glad I caught this!
Xaloc: OK
mark5000: Yes! Sorry, I'm on my newborn's schedule.
26hfung: hi
26hfung: :)
非凡围棋: hi
mark5000: This is a text-based lesson without audio or video
ArmenTsirunyan: Hello!
mark5000: Find past lessons at https://forums.online-go.com/t/becoming-9-kyu-a-series-for-beginners/3809
Benzi: hi
GoGoBoi: congrats though
mark5000: Thanks!
ArmenTsirunyan: Does it make any sense for me to watch this lesson if I don't know what exactly a joseki is :D
mark5000: Yes, definitely
taatelikakku: so far I have ignored 5-4 opening like it didn't exist. probably good time to have a look
mark5000: This series is for players coming up to 9 kyu. But it covers basics, and I explain things along the way.
mark5000: Joseki means fair corner sequence.
jillgoodgal: joseki just means a known sequence which is considered a reasonable outcome for both sides
jillgoodgal: or that
mark5000: Yours is more descriptive :))
Xaloc: I must admit that I avoided to play this opening!
ArmenTsirunyan: thank you!
非凡围棋: a international lesson :)
Holonium: I am facing a 5-4 opening in a corr game atm. So good timing to see this lesson ^^
mark5000: All right. Thanks for watching, everyone!
jillgoodgal: thanks for all these lessons!
mark5000: This is my last lesson in this series. I've done 54 of these!
mark5000: Find them all at https://forums.online-go.com/t/becoming-9-kyu-a-series-for-beginners/3809
Avatar33: Awesome series
Tehben: thanks a lot
jillgoodgal: when do the becoming 5kyu ones start?
mark5000: I hope they help you break through the beginner ranks :D
mark5000: I haven't decided. The newborn life may mean several months before I return to it.
Avatar33: How much does theory matter vs practice? 
jillgoodgal: huge!
Avatar33: Should you spend 50/50 time on both? 
Avatar33: Or should a beginner focus more on just playing
mark5000: Practice is more important. But you have to be intentional with your practice. Practice with purpose! Purpose to play a little better than the last time, using knowledge you've built on.
jillgoodgal: the theory to me really helps you figure out the mistakes you are making
mark5000: If you don't know what to do better, then you need a source of new ideas (theory).
非凡围棋: really a good lesson i always play  a single beginning
Avatar33: Thanks all.
mark5000: I always recommend playing simply to beginning and novice players. But don't be afraid of fighting if that's the best path forward!
mark5000: If you dodge all fights, your opponent can bully you without bad consequences.
mark5000: Happy Go playing!
JohnCollins: are there any problems to help learn general fights as opposed to L&D and such?
JohnCollins: Just "come off better in this position" rather than a bit kill?
mark5000: Learn what good enough looks like
mark5000: Killing is rare. Instead of killing, try punishing mistakes by developing more efficiently than they can afterward.
mark5000: Poke weaknesses they leave behind. Make them answer your moves with moves that don't help them, while your moves help you make profit.
mark5000: With that, I'm off. Thanks for watching! Keep sharing this series with new players you meet, if it helped you!
JohnCollins: thank you
]
(;W[pd]C[

-- chat --
26hfung: ok
26hfung: ok
]
)(;AB[pc]C[If the opponent doesn't play in the corner, this follow up takes lots of points and lots of influence at the same time. Because of this, many players choose to invade the corner before it gets enclosed.

-- chat --
seedrick: but sensei, my 35 kyu brain is telling me "3-3 invasion"
seedrick: ...never mind, i see you addressed it
seedrick: carry on
mark5000: Oh, we will!
]
;AE[pc]LB[pc:A]LB[qc:B]C[If your opponent invades the corner, you can expect a wall or outward influence in return. The most common invasions at the 3-4 point at A and the 3-3 point at B.]
(;AB[qj]
;W[qc]LB[pj:B]LB[qj:A]LB[qk:C]C[Players usually choose the 3-3 point invasion when Black has potential on the right side. For example, Black might have a stone here at A, or at B or C. Since that is the case, White would usually play on the 3-3 point because it's easier to slide under the 5-4 stone and reduce Black's potential.]
(;B[od]C[The diagonal play is a common follow up.]
(;W[re]TR[qj]C[Then White can slide under the 5-4 point like this. Because Black has a stone around the marked point, White should slide under in the direction of that stone to ruin some of Black's potential there.one so that io ruin some of BLack's potential there.

-- chat --
seedrick: sensei, is attaching here bad?
seedrick: R15 instead of S15
]
)(;W[qe]C[If White instead plays here,]
;B[qf]TR[qj]C[Black would bend here, and it forms a good combination with the marked stone. So White didn't reduce Black's potential successfully. In fact, White owes another move to secure the corner.]
;W[re]LB[qe:A]LB[qf:B]C[White must play here anyway, and White didn't gain much by exchanging A for B in this case.

-- chat --
Avatar33: White is likely to get sealed into the corner in this case?
seedrick: yup
mark5000: Yes.
seedrick: thanks sensei!
mark5000: That's the nature of the 3-3 point invasion.
]
)(;W[ob]C[For similar reasons, White wouldn't choose this direction of play.]
;B[qd]TR[qj]C[After Black kicks the 3-3 stone like this, the marked stone is ideally positioned to build influence. So think about your direction of play when you play this!!

-- chat --
非凡围棋: thanks
mark5000: One moment.
mark5000: Baby emergency :)
mark5000: Back now
]
))(;B[oc]C[Another way Black can respond is with a knight's move here. ]
;W[pd]C[The simplest follow up is this diagonal move.]
;B[od]C[Black should block here.]
;W[qe]C[Then White can play this and extend as far into the right side area as Black allows.]
(;B[pf]C[If Black stretches, leaving no cutting points behind,]
;W[qf]C[White can follow along.]
;B[pg]
;W[rh]TR[qj]C[After pushing once, White can slide under the stones and finish the joseki. As you can see, the marked stone isn't working well in this variation. So Black shouldn't play like this here.]
)(;B[qf]C[A more aggressive way to answer is by bending twice. Kyu players are often afraid of this tactic, because it leaves two cuts behind. But dan players play it often. Neither cut is fatal to Black, and White can only take advantage of one of them in any event. So it's fine to play like this.]
(;W[rf]C[White's best answer is usually not to cut, but only threaten to cut.

-- chat --
mark5000: So remember to bend under here!
mark5000: This move helps separate novice players from the higher ranks.
]
;B[pf]C[Black should of course fix the cutting points that Black left behind.]
;W[rg]LB[qh:A]TR[qj]C[If White instead cuts here,invasion can be useful indeed.,

-- chat --
Avatar33: If there is time, could you show us why the cuts don't work well. 
]
)(;W[oe]C[If White instead cuts here,]
;B[pf]C[Black must connect, and White has no good follow up. The corner isn't alive yet, and the cutting stone has only two liberties and needs help too.]
)(;W[pf]C[This atari is a little better, but]
;B[oe]C[Black will again connect. And again White's follow up is difficult.]
(;W[rf]C[If White just pushes here,]
;B[qg]C[Black will stretch out, and]
;W[rg]
;B[qh]C[This pattern isn't better than the joseki.]
)(;W[qg]C[White can try fighting back like this.]
;B[rf]C[After Black stretches, It's White, not Black, who has bad cutting points to manage.

-- chat --
Avatar33: Yeah, this variation whas the one I was scared of
Avatar33: Interesting, thanks
]
;W[ph]C[White has to fix the cutting point before launching any attack against the black stones.]
(;B[of]C[But Black has a forcing move here.]
;W[pg]
;B[rd]C[And this peep is hard to answer. As a result, You don't often see these variations.]
)(;B[re]
;W[qd]
;B[rg]
;W[rh]
;B[pi]
;W[oh]
;B[ri]
;W[sg]
;B[qh]
;W[qi]
;B[of]
;W[pg]
;B[qh]C[

-- chat --
非凡围棋: 1. From move 0: Q15 Q17 Q17 R10 R17 P17 Q16 P16 R15 R14 Q14 P15 R13 S14 Q12 S15 R16 S13 S12 Q11 P12 S11 T13 R12 R11 P14 Q13 R12 
]
))))))(;W[pc]LB[oc:B]LB[qc:C]LB[nd:A]C[If Black doesn't have potential, then White will usually play here on the 3-4 point. The 3-3 invasion is still possible, however.

After this, Black has many ways to respond. The most common, in no particular order, are A, B, and C. We'll review each briefly.]
(;B[nd]C[At the kyu level, this knight's move, covering the white stone, is the one you're most likely to see in your games. It fits Black's aim to build influence facing the right side area. Black usually gets a wall no matter how White answers. But what that wall looks like can differ greatly depending on White's answer.

-- chat --
jillgoodgal: almost always should play down from third to second line in that case, I think
]
(;W[qe]C[The most common response is this attachment.]
(;B[qf]C[Blocking the right side is a common answer.]
;W[qd]C[White draws back, and]
(;B[pf]C[Black fixes the cutting point. No matter how much of these josekis you remember, you should remember that cutting points are a liability, and fixing them is often the most crucial move on the board, especially in the opening.

-- chat --
jillgoodgal: what about Q13 for black there instead?
mark5000: Also possible
]
;W[nc]C[Next, White should attach here to make life in the corner and avoid getting surrounded.

-- chat --
jillgoodgal: seems to cover the white push under at S14 better
mark5000: Yes
]
;B[mc]C[Black will bend here, and]
;W[nb]LB[pf:A]LB[pg:B]C[White drops down. This is the end of the joseki, and White can play this way no matter how Black fixes the cut (A or B).]
)(;B[pg]LB[of:A]C[If Black fixes the cut with this hanging connection instead of a solid connection, then it covers a little more ground, but at the expense of allowing White to peep at A. So Black should weigh these considerations depending on the board position. On an empty board, the solid connection is generally better.]
))(;B[pd]C[If Black wants to fight, Black can descend here and cut.]
;W[qd]
(;B[qc]C[This looks like a fighting pattern. But it resolves cleanly if you don't try to rescue the cutting stone too hard.]
;W[qb]C[White should atari this way.]
;B[rc]C[A Go proverb says to "make the sacrifice bigger." The reason for this is to give Black forcing moves on the outside of White. Let me show you.]
;W[rb]C[After White descends here,]
;B[oc]C[This is sente.]
;W[pb]
;B[qf]C[And this is sente.]
;W[rd]
;B[re]C[And this is sente.]
;W[sc]
;B[pg]C[Then Black fixes the connection. The result is that White got the corner area, and Black got outside influence. This is typical of 5-4 point joseki.]
)(;B[oc]C[Black should not bend here in this pattern.]
;W[pb]
;B[pf]
;W[rg]C[White's corner area is too big compared to Black's influence. On top of this, Black's influence is facing the wrong direction. Black wanted influence facing the right side area when Black first played the 5-4 point. So this result would be a failure.

-- chat --
Avatar33: That sacrifice proverb will come in handy. 
mark5000: :)
mark5000: Adding one stone to the sacrifice sometimes opens new possibilities even if they are both captured!
]
)))(;W[qd]C[Kicking here isn't good.]
;B[qe]C[Black can block here, and White owes another move to secure the corner. Black is also solid.]
)(;W[nc]C[If taking sente is important, White can attach here.]
(;B[md]
;W[mc]
;B[ld]
;W[lc]
;B[kd]C[After pushing twice, White can play elsewhere.]
)(;B[mc]LB[md:A]C[But if White attaches, White has to be willing to accept this fight. Now cutting at A is the only way to produce an even result, and the better fighter will come out ahead.]
;W[md]
;B[ne]
;W[lc]
;B[mb]
;W[nb]
;B[lb]
;W[kc]
;B[qc]
;W[kb]
;B[lf]C[

-- chat --
非凡围棋: 2. From move 0: Q15 Q17 Q17 Q17 O16 O17 N17 N16 O15 M17 N18 O18 M18 L17 R17 L18 M14 
]
))(;W[od]C[The last attractive choice for White is this diagonal. We've already seen it starting from the 3-3 point invasion.

-- chat --
jillgoodgal: cut!
]
;B[oe]
;W[nc]
;B[mc]
;W[mb]C[Bending under here is again good. It's the same pattern and same idea.]
))(;B[qc]C[The other move we will cover today is this attachment. It's simple enough, but it aims more at an even exchange of territory than an exchange of territory for influence.]
;W[qb]C[White bends under here. Bending in response to an attachment is a proper answer.]
;B[qd]
;W[ob]C[Then this hanging connection is a good shape.]
;B[ph]LB[qh:A]C[An extension here or at A completes the joseki. So it's simple. Black can still use this to build the right side area, but it's less influence-oriented than the knight's move covering play.]
)(;B[oc]C[I don't recommend this attachment, but it's also a joseki. I'll just give the sequence without comment.]
;W[ob]C[

-- chat --
jillgoodgal: attacker plays 5-4 against a 3-4 opening
]
;B[od]
;W[nb]
;B[qc]
;W[qb]
;B[pd]
;W[pb]
;B[rc]
;W[lc]
;B[qi]C[This is the joseki. It's a little more involved than the other two answers, but if you know it, you can also play it.

-- chat --
mark5000: That bring me to the end of the lesson.
mark5000: Any last questions about the 5-4 point?
Benzi: Thank you that was excellent
jillgoodgal: it often occurs in reverse
Avatar33: Thanks Mark 
李建澔2: Thanks for this mark
]
))))(;B[qd]
;W[od]C[

-- chat --
mark5000: Oh yes. I mentioned it briefly at the start
mark5000: If you leave this alone, it's a 5-4 pattern.
]
)(;B[qc]
;W[pe]LB[pd:A]LB[pe:D]LB[qe:E]LB[pf:B]LB[qf:C]C[

-- chat --
mark5000: Same with this
mark5000: Playing elsewhere leaves a 5-4 pattern. So even if YOU don't play 5-4, you may walk into one of these patterns anyway.
非凡围棋: 3-3 point have this variation？
mark5000: Sure. It's uncommon, but this approach isn't unheard of. Actually, I covered it in an earlier lesson.
jillgoodgal: yes I remember, it can be better than 4-4 when you have stones behind on that side
mark5000: A is the most common, followed by some approach at B-E.
]
))