TheArtOf9x9Go/R2D04

Sub-page of TheArtOf9x9Go

Accompanying materials of The Art of 9x9 Go: How to Beat Dan Players at GoQuest

1 KYU KR_NYAN (R1891) BEATEN BY THE AUTHOR

White wins by 8 points, komi 7.

[Diagram]
 

This is the fourth game on the road to 2 dan. At the time of this writing, Black is 3 dan (R1871), which might be his actual rank.

The game is being edited in 2021 by [ext] Monteo da Westi to give 8D insights.


[Diagram]
 

B1 is a contemporary opening, popularized by Go Seigen. It is ready to create outside influence if Black is attacked at triangle. B1 is good for high komi games (e.g., 6). For higher komi, 7 points or more, Tengen is the only best opening.


[Diagram]
 

W2 is a mirror reply, just to create the most balance shape. Another balance play is at either a or b.


[Diagram]
 

B3 is an early attack, which is the best move for Black commonly played in high dan games. Normally weak players avoid it because their strategies are territory-oriented. Strong players, on the other hand, have adaptive strategy. They decide the next move by the opponent's camp, not by the free land available.

Again, attaching at a is optional, yielding the same result.


[Diagram]
 

W4 is to claim the left region. Whole board thinking shows White is physically inferior, but the big komi makes them actually balance.

W4 is the first wrong move in this game. White would better slide at a to strengthen W2 and weaken B3. Jumping like W4 will allow Black to attack more at b to claim the large top right area, while weakening W2 even more.


[Diagram]
 

After B5, Black seems to occupy the large north east region. And, white+square is being attacked. White wants to help it and, to be efficient, plans to attack Black at the same time. This is double-purposes strategy.


[Diagram]
 

So, White hanes with W6, which aims at triangle. Black has to choose between square and triangle.


[Diagram]
 

Black pushes with B7, which is a wrong move. He expects White to fill at square and then he will seal at triangle, which will ascertain the large territory is his.

The right move for W8 is triangle, to cut Black into two groups. Similarly, triangle is the right move for B7. Thus, triangle is the key point for both Black and White, as the proverb says Your enemy's key point is your own key point.


[Diagram]
 

White cuts with W8 rather than filling at square, which surprises Black. Now the black army is divided into two units.black+cross is hard hit and needs help.

W8 is actually the best move. If Black captures at square, White will connect at a, which cuts Black completely.


[Diagram]
 

B9 is natural; otherwise, black+cross will get killed. It seems like White is being squeezed and needs to fight both sides at the same time.


[Diagram]
 

W10 is somewhat receptive, but it creates weak points of Black, at cross. It also unites the white army, forming a Berlin wall that influences both sectors of Black.

From an 8D perspective, W10 is the only best move in this circumstance. It forms a firm basis (solid wall) that allows White to attack the lower two black stones even harder.


[Diagram]
 

Black though the weak points are too many, so he put B11.


[Diagram]
 

W12 affects black+cross directly and indirectly. White now forms a great wall, hard to kill.


[Diagram]
 

Black's most urgent task is to help the two black+cross. The question is how? He has to surround enough space, in correct form, in order to live. He begins with B13.


[Diagram]
 

The purpose of B13 and B15 is to widen the base, a basic strategy for survival. The purpose of W14 and W16, on the other hand, is to squeeze or confine Black, in order to make Black live in hardship.


[Diagram]
 

The fighting until B17 not only affects Black's bottom group, but also influences Black's top left group.


[Diagram]

W18 is not as small as it seems. Imagine what will happen if Black can jump freely with black+square.


[Diagram]
 

B19 is a must unless there is somewhere bigger to play.


[Diagram]
 

W20 is simply to escape while almost killing black+cross.


[Diagram]
 

Black enjoys tracking with B21. To here, Black seems to occupy the large two corners, whereas White is being squeezed. White needs to create a big turning point in order to win. This is called "Believe in your dreams and making them reality."


[Diagram]
 

Black wants to hane at triangle and then square in order to kill white+square. If allowed to happen, this battle would lead Black to victory. Therefore, White should do some big attack before. Big attack means an attack that could kill a big group or cause a vast territory damage to the enemy.


[Diagram]
 

W22 is big. If ignored, it is a basis for white jumping to square, and will possibly kill this black group.


[Diagram]
 

Black wants to arrest white+cross at square. Beginners will defend at square, but stronger players don't. A better reply is to fight back at triangle.


[Diagram]
 

For more annotation (from W24 to here), see The Art of 9x9 Go. At the end, White (the author) wins by 8 points.



TheArtOf9x9Go/R2D04 last edited by 124.120.13.230 on January 6, 2021 - 16:23
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