Jlt's game reviews

Teaching Study Journals
21

A short review of a game played in a parallel universe with Sofiam (originally it was a casual rengo with Sofiam+benjito against me but benjito left the game at move 31).

Black to play:
1

Answer

Black should play at E18.

Explanation

In the game, Black played at H19 but White can capture stones in sente:

2

The next position comes from this joseki. How should White play next?
3

Answer

Just connect. After the following tesuji, White has enough liberties to capture the marked stones.
4

In this position, how should White answer?
5

Answer?

AI proposes this but I canā€™t say I understand where this fight is going, so forget itā€¦
6

In the following position, how should White answer?

7

Answer

Like in the joseki.
8

Black may owe a move later at B5 (or White has a followup there later).
If White plays at B3 instead of B2, White canā€™t be cut but the shape is less good.

4 Likes
22
My assumption

After white made those J3 and K2 exchanges, I suppose the KataGo doesnā€™t like to abandon whiteā€™s lower side stones without a fight.

But checking that fight with KataGo on my own laptop, itā€™s immensely complicated (and black keeps the lead). Following KataGoā€™s fighting for 60 moves:

image
image978Ɨ978 135 KB

And the fighting for whiteā€™s lower side group is still not over.

4 Likes
23

Two quick positions from a fast correspondence game that I lost against @Groin. The game was played in 4 days, I finished it this morning in a train (I wanted to chat after the game but my connection was bad so I couldnā€™t).

First position, Black to play.
1

Answer

P8. This should have been easy (reverse sente move, border between two moyos). Therefore, White should have played at P8 before approaching the upper right corner.

Second position: Black to play.

2

Answer

3
The cut is a sacrifice. Black thus finishes in sente.

2 Likes