(;FF[4]
CA[UTF-8]
GM[1]
GN[Becoming SDK - Lesson 4]
PC[https://online-go.com/review/56802]
PB[Black]
PW[White]
BR[1d]
WR[1d]
OT[Error: time control missing]
RE[?]
SZ[19]
KM[6.5]
RU[Japanese]
C[

-- chat --
mark5000: That concludes today's lecture and Q+A.
mark5000: Thanks everyone!
mlopezviedma: great lecture, mark5000 , thanks a lot!
xhu98: Thanks so much Mark!
xhu98: Great lesson! <3
mark5000: For players who came late, please review the beginning too!
mark5000: And find the first 3 lectures here: https://forums.online-go.com/t/becoming-9-kyu-a-series-for-beginners/3809
mark5000: This is lecture 4
xhu98: There you go, like #20
Tokumoto: http://en.wikipedia.org/wiki/Koichi_Kobayashi
NinzieQT: this is already over =)?
mark5000: Yes! But you can read all about it. :-)
Tokumoto: yes, we successfully avoided you!
MacGyverLizard: did i miss it or is it still going on?
MacGyverLizard: ok thx
seestarr2003: d1. From move 0: 
densmnko: d1. From move 0: 
]
;B[pd]C[In Lesson 1, we learned about the characteristics of each point in the corner. We'll move on to joseki now. Let's look at 4-4 joseki first.]
;W[qf]C[When approaching the 4-4 point, this move is normal.]
;AE[qf]LB[pf:A]LB[pg:B]LB[qg:C]C[The high approaches at A and B are also played, usually in framework-oriented games and handicap games. The large knight's approach at C is more flexible.]
(;AW[qf]LB[qc:B]LB[rd:A]C[But this approach is more common. That's because it creates good follow ups for White, such as A and B. After White's approach, Black should respond somehow.]
(;B[dp]
;W[nc]C[A tenuki would allow White to double approach like this. Then White will take control of the corner.]
)(;B[nd]LB[nc:A]C[This one-point jump and the knight's move at A are common. I think they're the most practical responses. Let's look at the one-point jump today. Before playing this move you need to understand its characteristics. Since the black stones are both on the 4th line, it's an influence-oriented move. Therefore, when you choose this move, you shouldn't be overly concerned about the territory in the corner.]
(;W[lc]C[Sometimes White plays here immediately. Stronger players play like this in handicap games.]
(;B[mc]C[This move is bad. It's called the "weak player's diagonal." It's a bad exchange.]
;W[ld]
;B[qd]LB[nd:A]C[Some players try to secure the corner like this. But they don't understand the primary meaning of Black's jump at A.]
;W[oc]C[There's still a weakness here.]
;AE[oc]
;AE[qd]TR[mc]C[Since the diagonal attachment makes White stronger, it isn't a good choice.]
)(;B[qi]LB[ic:A]C[Instead you should pincer and attack White, either here or at A.]
;W[of]C[In response to this jump,]
;B[qe]C[First block White from sliding into the corner, and]
;W[rf]
;B[me]LB[lc:A]C[You should move out here. As we saw, you can't expect many points in the corner. Black's position, however, is solid enough to get a base. In contrast, White's groups are now separated. So this fight favors Black.

Because of that, the immediate approach at A is an overplay.]
))(;W[rd]C[Sliding here is better. Now Black's answer at 3-3 is important.]
(;B[dp]C[If Black tenukis,]
;W[qc]C[White will take this point. In terms of territory it's huge. In addition, it threatens the safety of the black group. Therefore, Black can't miss it.]
)(;B[qc]C[Now it's White's turn. How far should White extend now?]
(;W[qi]C[Since this is a basic joseki, many of you would know this 2-space extension. But rather than just knowing a joseki, understanding some principles will help a lot.

When you've already exchanged the slide in the corner, you should play this 2-point extension.

This is the end of the joseki. ]
(;AW[lc]C[But what if White approaches here later?]
)(;B[kc]LB[jc:B]LB[lc:A]C[Because White's approach at A is a nasty move, spending one more move here or at B is a good idea. Then you can complete your framework.]
))(;W[qj]C[What if White goes 1 point further?]
(;B[qh]C[In this case, Black can invade in the middle. Now White's in trouble.]
;W[rh]C[White can attach and connect her stones above or below. But she'll lose many points in the process. As the proverb says, the 2-point extension on the 3rd line is correct.]
;B[rg]
;W[qg]
;B[ri]
;W[ph]
;B[qi]
;W[pi]LB[rg:A]C[This variation would be expected if Black bends at A. You can see it's not very good for White.]
)(;AE[qj]C[I saw some beginners' games and found an interesting move.]
;AW[pj]C[I realized that many players play here now. ]
(;AE[pj]
;AW[qj]LB[qh:A]C[In this case, White has no proper answer after Black's invasion at A.]
)(;B[qh]C[If Black plays here, ]
;W[ph]LB[pj:A]C[White can attach here. I think this is why the extension to A is played. It's wrong, however.]
(;AE[qc]
;AE[rd]LB[pj:A]C[If you want to play here at A, don't exchange the slide. Without the exchange, the extension is a good move. ]
;AW[qc]C[After that, White can invade 3-3 later.]
;AE[qc]C[Let's see what happens if White exchanges the slide first.]
)(;B[pi]C[Depending on the situation, Black can wedge here, which is a strong move. But let's look at the simple variation first.]
)(;B[qi]
;W[pi]
;B[qg]
;W[pg]
;B[rf]C[It's easy for black to survive on the right side.]
;W[qe]
;B[rk]LB[qc:C]LB[rd:B]LB[rf:A]C[After bending at A, Black plays a knight's move. Black lived so easily. At this point, we can see how bad the exchange of B for C is.]
;AE[qc]
;AE[rd]LB[qd:C]LB[rd:A]LB[re:B]C[In this situation, nobody would diagonal to A. White would block at B and aim at 3-3, or push at C.]
;W[rd]
;B[qc]LB[qc:B]LB[rd:A]C[But sliding into the corner made Black secure. And the black group on the right side is safe too. On the other hand, there's a cutting point in White's shape. Now you can understand why the AB exchange is so bad in this case. ]
))))))(;W[pj]LB[qc:B]LB[rd:A]LB[qi:C]C[If you want to extend 3 spaces, do so without sliding to A first. Once you exchange A for B, you have to play the 2-space extension to C. Remember this!]
)(;W[qc]C[

-- chat --
OuttaSpace: why didnt you cover R17?
OuttaSpace: as an answer to one point jump of 4-4
]
)))(;AW[pf]
;AE[pf]
;AW[pg]
;AE[pg]
;AW[qg]
;AE[qg]
;AW[qf]
;AW[rd]
;AE[rd]
;AW[qc]
;AE[qc]
;AW[nc]
;AE[nc]
;B[nd]
;AE[nd]
;AB[nd]
;W[lc]
;B[mc]
;W[ld]
;B[qd]
;W[oc]
;AE[oc]
;AE[qd]
;AE[ld]
;AE[mc]
;B[ic]
;W[le]
;B[nf]
;AE[nf]
;AE[le]
;AE[ic]
;AE[lc]
;W[rd]
;AW[qc]
;AE[qc]
;B[qc]
;W[of]C[

-- chat --
piupiu: Hello
]
))