Life In 19x19 :: 3k vs 4k close game review

Life In 19x19 http://www.lifein19x19.com/

3k vs 4k close game review http://www.lifein19x19.com/viewtopic.php?f=4&t=16860	Page 1 of 1

Author:	Fllecha [ Sat Aug 17, 2019 4:29 am ]
Post subject:	3k vs 4k close game review
Hi all, I played an even game against a stronger opponent and I need some review. Thanks in advance.

Author: DeprivedWaste [ Sat Aug 17, 2019 10:57 am ]

Post subject: Re: 3k vs 4k close game review

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.

Attachments:

review-19x19.sgf [3.46 KiB]
Downloaded 619 times

Author: Joaz Banbeck [ Sat Aug 17, 2019 12:20 pm ]

Post subject: Re: 3k vs 4k close game review

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]

Author: Uberdude [ Sat Aug 17, 2019 4:05 pm ]

Post subject: Re: 3k vs 4k close game review

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.

Author:	Bill Spight [ Sat Aug 17, 2019 5:39 pm ]
Post subject:	Re: 3k vs 4k close game review
Quick comment: Q-15. Double peep. Then P-15, Q-14, snagging the Black stone. Invasion successful!

Page 1 of 1	All times are UTC - 8 hours [ DST ]
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group http://www.phpbb.com/