1 KYU KR_NYAN (R1891) BEATEN BY THE AUTHOR
White wins by 8 points, komi 7.
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 Monteo da Westi to give 8D insights.
is a contemporary opening, popularized by Go Seigen. It is ready to create outside influence if Black is attacked at . is good for high komi games (e.g., 6). For higher komi, 7 points or more, Tengen is the only best opening.
is a mirror reply, just to create the most balance shape. Another balance play is at either ‘a’ or ‘b’.
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.
is to claim the left region. Whole board thinking shows White is physically inferior, but the big komi makes them actually balance.
is the first wrong move in this game. White would better slide at ‘a’ to strengthen and weaken . Jumping like will allow Black to attack more at ‘b’ to claim the large top right area, while weakening even more.
After , Black seems to occupy the large north east region. And, 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.
Black pushes with , which is a wrong move. He expects White to fill at and then he will seal at , which will ascertain the large territory is his.
The right move for is , to cut Black into two groups. Similarly, is the right move for . Thus, is the key point for both Black and White, as the proverb says ”Your enemy's key point is your own key point”.
White cuts with rather than filling at , which surprises Black. Now the black army is divided into two units. is hard hit and needs help.
is actually the best move. If Black captures at , White will connect at ‘a‘, which cuts Black completely.
is natural; otherwise, will get killed. It seems like White is being squeezed and needs to fight both sides at the same time.
is somewhat receptive, but it creates weak points of Black, at . It also unites the white army, forming a Berlin wall that influences both sectors of Black.
From an 8D perspective, 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.
Black's most urgent task is to help the two . The question is how? He has to surround enough space, in correct form, in order to live. He begins with .
The purpose of and is to widen the base, a basic strategy for survival. The purpose of and , on the other hand, is to squeeze or confine Black, in order to make Black live in hardship.
The fighting until not only affects Black's bottom group, but also influences Black's top left group.
Black enjoys tracking with . 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."
Black wants to hane at and then in order to kill . 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.
Black wants to arrest at . Beginners will defend at , but stronger players don't. A better reply is to fight back at .
For more annotation (from to here), see The Art of 9x9 Go. At the end, White (the author) wins by 8 points.