(;FF[4]
CA[UTF-8]
GM[1]
GN[Becoming 9 Kyu - Lesson 8]
PC[https://online-go.com/review/58570]
PB[Black]
PW[White]
BR[1d]
WR[1d]
OT[Error: time control missing]
RE[?]
SZ[19]
KM[6.5]
RU[Japanese]
C[

-- chat --
HowToPlay?: D16
Meloco: last seems best with d4 stone being white
mark5000: Any other questions about the opening or big points?
Meloco: I know 1-1 is bad. so that's something
Meloco: ^^
Meloco: what about opening on say k3 or k4?
Meloco: is that viable?
mark5000: It violates the principle of corners, sides, center.
mark5000: It would be an inferior opening.
mark5000: What's the difference between that and the prior situations?
]
;B[qd]
;W[dd]
;B[cp]
;W[pp]
;B[oc]
;W[eq]
;B[do]C[Hi! We're going to focus on big moves. How do we find big moves? Big moves can be divided into two types: (1) moves affecting territory and (2) moves affecting safety. In general, enclosures, approaches, extensions, and corner invasions are considered to be big territorial moves.

Let's look at the board. There are many big points.]
;W[hq]C[For White, this extension is big.]
;B[qn]C[This approach is also big for Black.]
;W[np]
;B[rp]
;W[qq]
;B[qk]C[Sometimes a joseki will be played, but the principles are the same: enclose, approach, or invade a corner, or extend along the side.]
;W[ck]C[Since Black didn't play on the left side, this extension is big.]
;B[fc]
;W[df]
;B[jd]C[It's easy to see that all of these moves are good, because they sketch out territory for each player.]
;W[cn]
;B[dn]
;W[cm]C[What's the biggest move on the board now? Urgent moves affecting safety and security of stones. Even though there are many big moves, the most urgent area is the lower left corner.]
(;B[dq]C[Black needs to play a diagonal to settle in the corner.]
)(;B[fe]C[If Black plays elsewhere,]
(;W[cr]TR[dn]TR[do]TR[cp]C[White will slide into the corner. Now the black group is floating without a base, so it will suffer from White's attack. This is bad for Black.]
)(;AE[fe]
;AB[dq]C[Because of that, this diagonal is more urgent than any other move for Black.]
;W[ep]C[White needs to stand up.]
;B[dr]C[Then Black descends. Now the black group is safe.]
;W[fn]C[Now it's time to jump and expand the framework.]
;B[fe]LB[db:A]C[The opening can continue like this, with or without sliding at A first.

So we've learned about two types of big points in the opening. The first is related to territory, and the second to group safety. I hope you'll keep that in mind!]
)))