BeginnerExercise325/Attempts

Sub-page of BeginnerExercise325
[Diagram]

Status of groups?

White alive, Black dead.

[Diagram]

Status of groups?

[Diagram]

Status of groups?

[Diagram]

Status of groups?

White dead, Black alive.

Status = unsettled.

[Diagram]

Status of groups?

White to play, Black dead.

[Diagram]

Status of groups?

White peep at 1 leaves Black with 2 liberties

[Diagram]

Status of groups?

Black cannot escape to the outside with 1 (3 at 4; 4 at 3)

[Diagram]

Status of groups?

Black's only hope looks to be 1 here

[Diagram]

Status of groups?

White 2 creates a shortage of liberties, and black can capture

[Diagram]

Status of groups?

Black wins the race if White doesn't defend

[Diagram]

Status of groups?

But drawing out with 2 gives White more liberties. Black connecting at 3 gives both groups 4 liberties, and White has sente.

So for me that makes Black dead, White alive.

[Diagram]

Status of groups?

Note 3 in this diagram causes Black to lose another liberty - White still has 4, Black only 3 - and White remains in sente.

[Diagram]

Status of groups?

But wait - how should White respond to Black 1? 2 here invites the throw-in.

[Diagram]

Status of groups?

2 here leaves too few liberties - Black has 3, White also 3, but with Black sente.

[Diagram]

Status of groups?

Descending to 2 here doesn't buy White enough liberties

So Black can kill White with 1. Unsettled then...


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