(;FF[4]
CA[UTF-8]
GM[1]
GN[Becoming 9 Kyu - Lesson 28]
PC[https://online-go.com/review/417933]
PB[Black]
PW[White]
BR[2d]
WR[2d]
OT[Error: time control missing]
RE[?]
SZ[19]
KM[6.5]
RU[Japanese]

(;AB[db]
;AB[eb]
;AB[ib]
;AB[id]
;AB[gd]
;AB[ge]
(;AB[fc]
;AB[fb]
;AW[ga]
;AW[gb]
;AW[gc]
;AW[fd]
;AW[ed]
;AW[dc]
;AW[cb]
;AW[cc]C[Hi! Here we'll learn some rules for capturing races. We sometimes face capturing races in our games. But if you don't know some fundamental principles, you won't be able to capture your opponent's groups. This lesson will help you to play better in capturing.

The first principle is to choke from the outside, not the inside. Here, both groups have four liberties, and it's Black's turn. Therefore, Black should be able to capture White.

-- chat --
wenmorj: thanks for the lesson
mark5000: You're welcome.
BrucePee: "becoming 9 kyu"?
BrucePee: i have a pro tip: think
mark5000: This is a text lecture, FYI
vitalCog: thanks for doing this btw
Julko: Hi
mark5000: Thanks everyone. Hope to see you all next time.
]
(;B[fa]C[What do you think about this move? It's a suicidal move right now. Black reduced White's liberties, but he also reduced his own. It's White's turn now.

-- chat --
Julko: bad
Cement: black gave away a liberty
Annoying orange: Yes
]
;W[da]C[After this hane, Black will die.]
;B[hc]C[It's no use playing here.

-- chat --
Annoying orange: Yes
]
;W[ec]C[White will atari and capture five black stones. It's a failure. In capturing races, you mustn't fill the shared liberties until the end.]
)(;B[hc]C[Instead, it's important to play from the outside first.]
;W[da]C[White will also play from the outside.]
;B[hb]
;W[ea]
;B[ha]LB[fa:A]C[Now, instead of A, Black can atari here. So Black can capture the white group.]
))(;AB[fe]
;AB[ed]
;AB[ec]
;AB[cb]
;AB[ca]
;AW[ga]
;AW[gb]
;AW[gc]
;AW[fc]
;AW[fd]
;AW[ee]
;AW[de]C[

-- chat --
Annoying orange: Thanks for the lesson
]
;AW[dd]
;AW[dc]
;AW[bc]
;AW[bb]
;AW[ba]C[Ok, let's learn the second rule. If you have an eye, you'll be better positioned in capturing races. Look at this situation. Black has four liberties; White has five. It seems like Black is dead. But if you look more closely, you'll see that Black has an eye shape here. If you make good use of it, you can win a capturing race.

-- chat --
Julko: f19?
dachen11: /me spawns
dachen11: b to play e19 makes it so that if white plays f19 white sacrifices one of their own liberties 
]
(;B[hc]C[What if Black chokes the white group from the outside like this?

-- chat --
DustinOnWheels: First rule: fill shared liberties last
mark5000: Yes
]
;W[ea]C[Then White will play an eye-gouging move.]
;B[hb]C[After this,]
;W[fa]C[White will connect here.]
;B[ha]
;W[cc]C[If White connects here, what's the result? It's mutual life. Seki. Neither side can capture the other's group. Thanks to the eye shape, the black group could survive like this. But, obviously, it would be better to capture White if possible. When both sides have a similar number of liberties, the player with an eye always wins. When both sides have a similar number of liberties, the player with an eye always wins. In 

-- chat --
Cactus Juice: seki xD
Shakes Fish At Sky: f1 allows white to play e1
]
)(;B[ea]C[In this case, you need to secure an eye like this.]
(;W[cc]C[White has to play here.]
;B[hc]
;W[fb]C[But White has to keep filling shared liberties.]
;B[hb]C[White can't atari now, because it's self atari. Black will capture the white group. This is an important lesson. In a capturing race, if you can make an eye, you should. And then you should play from the outside.

-- chat --
dachen11: and that is how you get your opponent to swear at you
]
)(;W[hc]C[This move doesn't increase liberties.

-- chat --
Julko: After making an eye by blscks in previous position
]
;B[ic]C[Black would connect against the peep, and White has five liberties same as before.]
))(;B[fa]C[If Black had played here instead,

-- chat --
ChôchôKo: DITES BONJOUR !
]
;W[cc]C[White would fill liberties from the outside.]
;B[hc]C[

-- chat --
Julko: What, if white instead c17 plays h17? Doesn't it adds one liberty to whites?
]
;W[ea]C[

-- chat --
ChôchôKo: 🙏 Namaste <3
]
;B[da]
;W[fb]C[Black would die. It's important to just make the eye right away.]
)))(;AB[rr]
;AB[qq]
;AB[pq]
;AB[oq]
;AB[no]
;AB[oo]
;AB[pn]
;AB[qn]
;AB[qo]
;AB[rn]
;AB[rm]
;AB[sm]C[

-- chat --
mark5000: Excuse me, my example is not quite right
]
;AW[sn]
;AW[ro]
;AW[sp]
;AW[rp]
;AW[qp]
;AW[pp]
;AW[po]
;AW[on]
;AW[om]
;AW[ql]
;AW[rl]
;AW[rj]C[Let's look at a third example. When there's a ko during a capturing race, you have to leave it until the end. There's a ko at the right here. 

-- chat --
mark5000: That's better.
]
(;B[so]C[Some players capture this white stone first, but that's wrong.

-- chat --
jillgoodgal: big mistake!
]
;W[pm]C[White will choke black from the outside.

-- chat --
jillgoodgal: can't fill that in
]
;B[op]
;W[qm]
;B[rq]C[White Black ataries here,]
;W[sn]C[White can now capture this black stone. As a result, Black has to find the first ko threat. This is bad. Let's go back to the beginning.]
)(;B[op]C[In this case, Black should play here first. ]
;W[pm]C[White can't connect the ko now, so White needs to choke black from the outside.]
;B[rq]C[After that, Black keeps reducing White's liberties]
;W[sl]C[If White ataries here,]
;B[so]C[Black can capture the ko first now! As a result, White has to find the first ko threat. Some players may think the order isn't that important. But that's a big misjudgment. In fact, it's incredibly important. If the value of a ko is large, any ko threats will be ignored. In that case, if the ko isn't in your favor, you might lose the game. So when there's a ko during a capturing race, remember to leave it until the end!

We've learned three principles of capturing races here. First, reduce liberties from the outside first. Second, if possible, secure an eye. Third, if there's a ko, leave it until last. Don't forget these rules!

-- chat --
ZbigniewWodecki: Thank you
Julko: Thanks!
Diego_123: awesome, thanks a lot
mark5000: That's all the material I prepared for today. Any questions?
jillgoodgal: isn't there sort of an exception to fill from the outside when racing toward the edge?
ZbigniewWodecki: When is a next lesson?
aGOp: thank you very much
Julko: When the next one will be?
Julko: :-)
Hvdvyve: Thank you
mark5000: I teach on Saturdays starting half an hour ago.
Shakes Fish At Sky: are your previous lectures collected anywhere?
ZbigniewWodecki: Ok, see you then
jillgoodgal: becoming 9kyu has them
mark5000: Yes! Find previous lectures here: https://forums.online-go.com/t/becoming-9-kyu-a-series-for-beginners/3809
Shakes Fish At Sky: many thanks
dreffuz: thanks a lot!
dreffuz: My goal for this year was to become a single digit, but it seems hard. I hope your lessons will help. I'll study them all!
mark5000: jillgoodgal: No exception that I know of. Of course, if you apply these rules in your mind and you don't win the capturing race, you should think about other choices.
It_is_a_normal: Thank you very much
]
)))