Hi all,

I played an even game against a stronger opponent and I need some review. Thanks in advance.

_________________
Don't play 1-2-3
Just play 3

(Go proverb)

Click Here To Show Diagram Code

[go]$$Bc23
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . 1 . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . X O X O 2 . . . , . . . . . X . . . |
$$ | . O X O O X . . . . . . . . . . . . . |
$$ | . X X X . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]

This move seems better (if b tries to with D4 white can net him), at a later point LZ shows another reason why.

Click Here To Show Diagram Code

[go]$$Bc
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X . X . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O . O . . . . . . . . . . . X . . |
$$ | . . O . 1 3 . . . . . . . . . . . . . |
$$ | . X O X O 2 . . . , . . . . X X . . . |
$$ | . O X O O X . . . . . . . O X O X X . |
$$ | . X X X X . . . . . . . O . O O O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]

White seems a bit in trouble, it is at least a weakness white has to look out for.

I added a few other suggestions, not a lot, with help of LZ.

My general impression is that you got away with dubious play in the center that would have been refuted by a stronger player.

The invasion at move 44 is almost certain to lead to a running fight, and black has way more relevant stones in the center to win such a fight:

Click Here To Show Diagram Code

[go]$$Wc Position at move 44
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . . . . . . . . . . . |
$$ | . . . . . X . . X . O . . O . . . . . |
$$ | . . . O . . . . . , . . . . . O . O . |
$$ | . . . . . . . . B . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . 2 . X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . 1 . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . B . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X . B . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O . O . . . . . . . . . . . X . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . X O X O . . . . , . . . . X X . . . |
$$ | . O X O O X . . . . . . . O X O X X . |
$$ | . X X X X . . . . . . . O . O O O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]

Black let you off easy by playing too thinly at move 47:

Click Here To Show Diagram Code

[go]$$W
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . . . . . . . . . . . |
$$ | . . . . . X . . X . O . . O . . . . . |
$$ | . . . O . . . . . , . . . . . O . O . |
$$ | . . . . . . . . X . . 4 . . . . . . . |
$$ | . . O . . . . . . . . . . . 2 . X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . 3 . 1 . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X . X . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O . O . . . . . . . . . . . X . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . X O X O . . . . , . . . . X X . . . |
$$ | . O X O O X . . . . . . . O X O X X . |
$$ | . X X X X . . . . . . . O . O O O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]

...which probably should have been here:

Click Here To Show Diagram Code

[go]$$W
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . . . . . . . . . . . |
$$ | . . . . . X . . X . O . . O . . . . . |
$$ | . . . O . . . . . , . . . . . O . O . |
$$ | . . . . . . . . X . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . 2 . X . . |
$$ | . . . . . . . . . . . . . 4 . . . . . |
$$ | . . . . . . . . . . . . . . 3 . 1 . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X . X . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O . O . . . . . . . . . . . X . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . X O X O . . . . , . . . . X X . . . |
$$ | . O X O O X . . . . . . . O X O X X . |
$$ | . X X X X . . . . . . . O . O O O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]

...or here:

Click Here To Show Diagram Code

[go]$$W
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . . . . . . . . . . . |
$$ | . . . . . X . . X . O . . O . . . . . |
$$ | . . . O . . . . . , . . . . . O . O . |
$$ | . . . . . . . . X . . . . . . . . . . |
$$ | . . O . . . . . . . . . 4 . 2 . X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . 3 . 1 . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X . X . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O . O . . . . . . . . . . . X . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . X O X O . . . . , . . . . X X . . . |
$$ | . O X O O X . . . . . . . O X O X X . |
$$ | . X X X X . . . . . . . O . O O O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]

_________________
Help make L19 more organized. Make an index: https://lifein19x19.com/viewtopic.php?f=14&t=5207

Black has no real attack here as white can simply connect under (big yose too).

Click Here To Show Diagram Code

[go]$$W
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . . . . . . . . . . . |
$$ | . . . . . X . . X . O . . O . . . . . |
$$ | . . . O . . . . . , . . . . . O . O . |
$$ | . . . . . . . . X . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . 2 . X 5 . |
$$ | . . . . . . . . . . . . . 4 . . . . . |
$$ | . . . . . . . . . . . . . . 3 . 1 . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X . X . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O . O . . . . . . . . . . . X . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . X O X O . . . . , . . . . X X . . . |
$$ | . O X O O X . . . . . . . O X O X X . |
$$ | . X X X X . . . . . . . O . O O O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]

So if black wants to attack he has to stop the connection. He can try to do it in sente like this, but white might not defend at 3 and accept the trade of some loss in the corner for an extra move on outside fight. Black ''a'' instead of 2 is probably worse as the damage after tenuki is less. White ''b'' reply is an endgame tesuji but likely middlegame mistake.

Click Here To Show Diagram Code

[go]$$W
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . . . . . . . . . . . |
$$ | . . . . . X . . X . O . . O . . b . . |
$$ | . . . O . . . . . , . . . . . O 3 O . |
$$ | . . . . . . . . X . . . . . . . 2 a . |
$$ | . . O . . . . . . . . . . . 4 . X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . 5 . 1 . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X . X . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O . O . . . . . . . . . . . X . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . X O X O . . . . , . . . . X X . . . |
$$ | . O X O O X . . . . . . . O X O X X . |
$$ | . X X X X . . . . . . . O . O O O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]

So 2 attaching on top looks prudent.

Quick comment:

Q-15. Double peep. Then P-15, Q-14, snagging the Black stone. Invasion successful!

_________________
The Adkins Principle:
At some point, doesn't thinking have to go on?
— Winona Adkins

Visualize whirled peas.

Everything with love. Stay safe.