#268 Gorim vs jlt

jlt · Post by **jlt** » Sun Jan 09, 2022 6:22 am

I'll try to review the game a bit from the point of view of White. Thanks again for that interesting game and thanks to spectators for their comments, I will read them after this.

After move 11, Katago wants to play like this

Click Here To Show Diagram Code: [go]$$Wc If Black omits :b2: then White can cut at a $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . O . 2 . . | $$ | . . . . . . . . . . 5 . . O . 1 X . . | $$ | . . . O . . . . . , . . O X . X a . . | $$ | . . . . . . . . . . . . 3 X . . . . . | $$ | . . . . . . . . . . . . . 4 . . . . . |[/go]

For many moves after that, Katago thinks that N15 is an important point for both sides.

At move 34, White didn't choose the best joseki. Katago wants to play like this:

Click Here To Show Diagram Code: [go]$$Wc :b8: can be at a or b $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . O . . . . | $$ | . 7 5 . . . . . . O . . . O . . X . . | $$ | . . 6 O . . . . . , . . O X . X . . . | $$ | . 4 . . . . . . . . . . . X . . . . . | $$ | . . X 1 3 . . . . . . . . . . . . . . | $$ | . . . 2 a . . . . . . . . . X . . . . | $$ | . . . . . . . . . . . . . O . . . . . | $$ | . . . . . . . . . . . . . O X . . . . | $$ | . . b , . . . . . , . . . O X . . . . | $$ | . . . . . . . . . . . . O X . X . . . | $$ | . . . . . . . . . . . . O X . . . . . | $$ | . . . . . . . . . . . . O . . . . . . | $$ | . . O . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . O . . . | $$ | . . . , . . . . . X . . O . O , X . . | $$ | . . . O . . . . . . . X . X X X . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

At move 50, I played "a" but wondered if b would have been better. Katago agrees but thinks that c is even better

Click Here To Show Diagram Code: [go]$$Bcm47 $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . O . . . . | $$ | . . . . . . . . . O . . . O . . X . . | $$ | . O . O . O . . . , . . O X . X . . . | $$ | . X O . . . . . . . . . O X . . . . . | $$ | . . X O . . . . . . . O X . . . . . . | $$ | . . X . . . . . . . . O X . X . . . . | $$ | . . . . . . . . . . . . X O . . . . . | $$ | . . X . . . . . . . c a . O X . . . . | $$ | . . . , . . . . . , . b . O X . . . . | $$ | . . . . . . . . . . . . O X . X . . . | $$ | . . X . . . . . . . . . O X . . . . . | $$ | . . . . . . . . . . . . O X . . . . . | $$ | . . O . . . . . . . . . O . . . . . . | $$ | . . . . . . . . . . . . . . . O . . . | $$ | . . . , . . . . . X . . O . O , X . . | $$ | . . . O . . . . . . . X . X X X . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

The followup is this sequence which is quite unnatural for me:

Click Here To Show Diagram Code: [go]$$Wc $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . O . . . . | $$ | . . . . . . . . . O . . . O . . X . . | $$ | . O . O . O . . . , . . O X . X . . . | $$ | . X O . . . . . . . . . O X . . . . . | $$ | . . X O . . . . . . . O X . . . . . . | $$ | . . X . . . . . . . . O X . X . . . . | $$ | . . . . . . . . . . 4 6 X O . . . . . | $$ | . . X . . . . . . 5 1 2 . O X . . . . | $$ | . . . , . . . . . , . 3 . O X . . . . | $$ | . . . . . . . . . . . . O X . X . . . | $$ | . . X . . . . . . . . . O X . . . . . | $$ | . . . . . . . . . . . . O X . . . . . | $$ | . . O . . . . . . . . . O . . . . . . | $$ | . . . . . . . . . . . . . . . O 7 . . | $$ | . . . , . . . . . X . . O . O , X . . | $$ | . . . O . . . . . . . X . X X X . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

At move 70, a possible continuation:

Click Here To Show Diagram Code: [go]$$Wc $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . O . . . . | $$ | . . . . . . . . . O . . . O . . X . . | $$ | . O . O . O . . . , . . O X . X . . . | $$ | . X O . . . . . . . O . O X . . . . . | $$ | . . X O . . . . . . . O X . . . . . . | $$ | . . X . . . . . . X O O X . X . . . . | $$ | . . . 0 a . . . . X O X X O X . . . . | $$ | . . X 9 4 2 X . . . X O O O X . . . . | $$ | . 6 5 7 3 1 O X X X . . . O X . . . . | $$ | . 8 . . . . . O O O X . O X . X . . . | $$ | . . X . . . . . . . O . O X . . . . . | $$ | . . . . . . . . . . . . O X . . . . . | $$ | . . O . . . . . . . . . O . . . . . . | $$ | . . . . . . . . . . . . . . . O . . . | $$ | . . . , . . . . . X . . O . O , X . . | $$ | . . . O . . . . . . . X . X X X . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

After this White cuts at "a", the central black group can survive in the center.

Move 104 was a 4pt endgame mistake according to Katago. White should have played like this:

Click Here To Show Diagram Code: [go]$$Wc $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . O . O . . . . | $$ | . . . . . . . b a O . O . O X . X . . | $$ | . O . O . O O . . , . . O X . X . . . | $$ | . X O . . . X . X . O . O X . . . . . | $$ | . . X O . . . . . . . O X . . . . . . | $$ | . . X . . . . . . X O O X . X . . . . | $$ | . . . . . . . . . X O X X O X . . . . | $$ | . . X . . X X . . . X O O O X . . . . | $$ | . . . , . . O X X X . . . O X . . . . | $$ | . . . . . . O O O O X . O X . X . . . | $$ | . . X . X O . . . . O . O X . . . . . | $$ | . . . X O . . . . . . . O X . . . . . | $$ | . X O X O . . . . . . . O . X . . . . | $$ | . X X O X . . O . . . . . O O O 1 . . | $$ | . O O O . . O X X X . . O X O , X . . | $$ | . . . O . . O O X . . X . X X X . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

A black move at a is not dangerous because White can clamp at b.

After a couple of 1-2 pt mistakes, White started to be in a quite difficult position.

Life In 19x19

#268 Gorim vs jlt

Re: #268 Gorim vs jlt