Life In 19x19

I started playing on IGS because I got frustrated trying to install KGS on my Macbook. The interface is really annoying to get accustomed to. The time threw me off. I couldn't tell how much I had so I lost because of that. Anyway, if you're up for it, I'd greatly appreciate your thoughts on the notes I made. Also I'd welcome anyone to point out any other mistakes that I overlooked and lastly, if the game had continued, was I on track to win? I played as black.

Thank you!

W ignored your (F4), so you hane G3 -- take advantage locally first.
If is not sente (no bite), then why play it.
This is not to say whether is good or bad (that's another
issue entirely), just that you missed the natural follow-up G3.

- (G4): locally, not good: if W H4 tiger's mouth, do you see W makes good shape
while you hit yourself on the head? Better not to do this exchange.

- too early (endgame move).
- too small. For example, R17 much bigger. I would consider G8,
capping the W group.

- locally, good, this is the local shared vital point.
- bad: standard bad habit; you just reduced your own libs.

- very small and slow, almost a pass. (R17 still much bigger.)

- now you get an idea why the double knight is actually not an efficient shape: 3-3 is still open.

- seems soft; S4 instead is a first feeling to kill.
As your homework, study the life-and-death if at S4.

I think I figured it out. Depending on how white plays

Click Here To Show Diagram Code

[go]$$W
$$ ------------
$$ | . . . . . .
$$ | . 8 3 9 0 .
$$ | 7 . 1 2 . X
$$ | . 5 4 X . .
$$ | . 6 . . . .
$$ | . . X . . .[/go]

Thank you for the insight

chef wrote:I think I figured it out. Depending on how white plays

$$W
$$ ------------
$$ | . . . . . .
$$ | . 8 3 9 0 .
$$ | 7 . 1 2 . X
$$ | . 5 4 X . .
$$ | . 6 . . . .
$$ | . . X . . .

Click Here To Show Diagram Code

[go]$$W
$$ ------------
$$ | . . . . . .
$$ | . 8 3 9 0 .
$$ | 7 . 1 2 . X
$$ | . 5 4 X . .
$$ | . 6 . . . .
$$ | . . X . . .[/go]

Thank you for the insight

But then there's this possibility

Click Here To Show Diagram Code

[go]$$W
$$ ------------
$$ | . . . . . .
$$ | . 8 3 9 . .
$$ | 7 0 1 2 . X
$$ | . 5 4 X . .
$$ | . 6 . . . .
$$ | . . X . . .[/go]

EdLee wrote: - now you get an idea why the double knight is actually not an efficient shape: 3-3 is still open.

Actually 3-3 there can be killed but its hard and bad aji.

@chef your diagram is for r4, Ed suggested s4. Also in your variation white has a better move 9. After move 7 white had made a tripod group which is alive.