(;FF[4]
CA[UTF-8]
GM[1]
GN[Becoming SDK - Lesson 2]
PC[https://online-go.com/review/54308]
PB[Black]
PW[White]
BR[1d]
WR[1d]
OT[Error: time control missing]
RE[?]
SZ[19]
KM[6.5]
RU[Japanese]
C[

-- chat --
flowing: o/
Laon: hey
Marnoris: https://www.google.be/maps/place/Rue+des+Tilleuls+60,+5680+Doische/@50.1348587,4.6761495,541m/data=!3m2!1e3!4b1!4m2!3m1!1s0x47c1f1cdeed69d55:0x3aaf279cae0f6d1
Marnoris: oops
Marnoris: /me whistles
MasterMind2349: Hi
VII: 7. From move 0: 
]
(;B[pd]
;W[dd]
;B[pp]
;W[dp]C[Let's start with a two-stars opening, also called nirensei (nee-ren-say). We use Japanese terms in the West because Japanese professionals brought Go to the West. China and Korea also have their own terms.

PRINCIPLES OF THE OPENING -- OPENING BASICS

Knowing a basic opening and its variations can be helpful. Here both Black and White start with two star points. 

-- chat --
Laon: d1. From move 0: Q16 D16 Q4 D4 
Laon: ? tht  wseny me
dont.wanna.tell: d1. From move 0: Q16 D16 Q4 D4 
dont.wanna.tell: d2. From move 0: Q16 D16 Q4 D4 
harrypotter192: d1. From move 0: Q16 D16 Q4 D4 
dergeffi: d1. From move 0: Q16 D16 Q4 D4 
RobNinSnowpuma: 4. From move 0: Q16 D16 Q4 D4 
]
;B[fq]LB[cn:D]LB[dn:D]LB[hp:A]LB[ip:A]LB[jp:A]MA[eq]LB[hq:A]LB[iq:A]LB[jq:A]C[Let's study this approach. In general, White has two local options: attack (A) or defense (D). Let's look at the defensive option. There are two options for defense (either with or without kicking at X). Playing elsewhere than the corner also possible, but let's keep it simple for now. You can think of playing on the third line as closing a door. In contrast, playing on the fourth line is opening a door. When your stones are near, open the door. But when they're far away, close it.

-- chat --
flowing: and tenuki – tenuki is always an option :3
nadoss: for completeness, what do you have to say about F4
nadoss: ?*
Soromos: d1. From move 0: Q16 D16 Q4 D4 F3 
temp159: d1. From move 0: Q16 D16 Q4 D4 F3 
nerddy3: d1. From move 0: Q16 D16 Q4 D4 F3 
]
;W[cn]LB[ip:E]LB[jp:E]LB[dq:S]LB[iq:E]LB[jq:E]LB[dr:S]C[Black has two main options: sliding or extending. ]
;B[jp]C[Today's opening is this extension. White should think carefully about the next move.

-- chat --
jgcanizales: 3. From move 0: Q16 D16 Q4 D4 F3 C6 K4 
]
;AB[pj]TR[pj]TR[jp]TR[pp]C[This is a double wing. It's a good formation. So White should stop black from forming it.]
;AE[pj]C[The lower side is narrow, but the right side is wider. So approaching on the right side is better. ]
;W[qn]LB[pj:O]LB[qj:O]LB[pk:O]LB[qk:O]LB[pl:O]LB[ql:O]TR[jp]LB[np:D]LB[nq:D]C[Black should choose an appropriate joseki. There are defensive and offensive josekis. How do we chose? It depends on the position of the stone on the side.


-- chat --
flowing: (you haven't deleted the node, but made a new one with the stone removed)
mark5000: Thanks. That is intentional. I want a reader to move forward only.
mark5000: Make it easy to follow. Is that a good idea? I'm not sure
flowing: yeah, I just noticed that you commented on both – my mind sometimes^^
flowing: well, it looks funny in the tree, but is actually pretty comfortable
Andorger: 5. From move 0: Q16 D16 Q4 D4 F3 C6 K4 Q10 Q10 R6 
]
;AE[jp]
;AB[jq]
;B[np]C[If Black extended on the third line earlier, Black can answer with an open door. This is the most common move when Black's extension is low.

-- chat --
Cacti: it's very confusing to me that you do not play the moves sequentially. what's the idea behind that?
]
;AE[np]
;AE[jq]
;AB[jp]
;AB[ql]C[When the stone is on the fourth line, this pincer is popular. I'm going to explain why.

White has many options when black pincers. Playing at the 3-3 point is the most common one. It's an easy way of dealing with pincers when you approach the star point.

-- chat --
nickytettamanti: 6. From move 0: Q16 D16 Q4 D4 F3 C6 K4 Q10 Q10 R6 K4 K3 O4 O4 K3 K4 R8 
]
;W[qq]LB[rm:3]LB[rn:2]LB[ro:1]LB[kr:5]LB[lr:4]LB[mr:3]LB[nr:2]LB[or:1]C[When White invades the corner, Black has two options for blocking. The right side has three spaces. The lower side has five spaces. It's better to block on the larger side.]
;B[pq]
;W[qp]C[White has to connect. Now there's a vital point to play.]
;AW[po]C[This tiger's mouth is a very good shape. It's also a hane at the head of two stones. ]
;AE[po]
;B[po]C[You must not miss this sort of vital point. It's a tiger's mouth vital point. ]
;W[qr]TR[qo]C[White should reinforce the weak point. Defending here gives White options for reducing the lower side.

-- chat --
皆伝Frizu: 9. From move 0: Q16 D16 Q4 D4 F3 C6 K4 Q10 Q10 R6 K4 K3 O4 O4 K3 K4 R8 R3 Q3 R4 Q5 Q5 Q5 R2 
]
;B[pn]
;W[qm]
;B[pm]
;W[rl]TR[jp]TR[fq]C[Then Black can complete a wall. This is a joseki. It's important to know how to invade between the two black stones. Otherwise it might be daunting to play this opening. I chose this opening to show you a basic opening that's popular with kyu players. Professional players have played it too.

Let's move on to our next opening lesson! (See next branch, starting at move 1.)]
)(;B[qd]C[This is another opening. Black starts on a 3-4 point. It's more territorial than a 4-4 point.

-- chat --
animeboy225: Ok
animeboy225: thanks
]
;W[dc]C[White responds with a 3-4 point too. Both players are interested in territory instead of influence.]
;B[dq]
;W[pp]
;B[ce]
;W[dh]
;B[ee]
;W[dn]
;B[fp]
;W[fd]C[This is one of the josekis that White can choose here.]
;B[cc]
;W[cb]
;B[bc]
;W[dd]
;B[de]
;W[fg]
;B[gf]
;W[gd]
;B[ff]
;W[jc]C[Let's start from here. A game is divided into the opening, the middlegame, and the endgame. "Big" moves belong to the opening, fighting to the middle game, and yose ("yo say," the process of completing territories) to the endgame.

PRINCIPLES OF THE OPENING -- PREPARATION FOR BATTLE

The opening is a process of preparing for battles in the middle game. We generally take big points in the opening. But a fight can sometimes start in the opening, too.

Have a look at this. The opening is underway. There are still many big points on the board. The lower right corner hasn't been decided yet. Neither has the upper right corner. So where's the biggest point now? In lesson 1, I told you that corner enclosures and approach moves are important. Do you think that theory still applies now? I guess your attention might be drawn to the left side. If so, you have a good instinct for Go. White's position at the left is weak.

-- chat --
animeboy225: Hi 
mark5000: Hi animeboy225 
animeboy225: Lost by 53.5 moves 
mark5000: Shucks!
mark5000: I hope this can help you.
animeboy225: Enclose a corner
Laon: hey anime
Laon: sry i left mark internet went out
animeboy225: Yo Laon
]
;B[dk]TR[fg]TR[dh]TR[dn]C[Therefore, this invasion is tempting for Black. Black can split White in two and attack two groups at once.]
;W[fn]C[What if white jumps out like this?]
;B[fk]TR[fg]TR[dh]TR[dn]TR[fn]C[Then black jumps out too. What do you think? Black takes the initiative in the battle. Even though there are many big points left on the board, the left side is the most urgent place right now. This kind of aggressive move can often be seen in modern Go.

Perhaps you've seen pros fight while leaving their corners unfinished. This is the natural flow of Go. But I advise you to stick to the basic principles first. With the exception of special circumstances like this, don't forget that the opening precedes the middle game. Take the urgent and big points first. Then you'll have a stronger foundation for fighting in the middle game. If we manage the opening well, the middle game becomes easier. Because of that, we need to learn certain patterns and skills in the opening. And before that, you need to learn how the opening works.

-- chat --
animeboy225: But what if it's a territorial game?
mark5000: The principles are the same.
animeboy225: Coolio
mark5000: Any questions?
animeboy225: Isn't this the same thing as before?
flowing: what's the difference between fundamentals and principles?
flowing: :3
mark5000: Hahaha. No difference. Just variety in language!
mark5000: Thanks for watching!!
flowing: thanks for lecturing!
kartikaya: mmm and where are the link of the fundamentals of opening??
]
;W[ca]C[

-- chat --
animeboy225: Principals sounds more important
]
)(;B[qf]C[

-- chat --
30xlombardi: 8. From move 0: R14 
]
))