A way to improve reading skills 2.0

Gomoto · **#21**

@Edlee (I also updated the answer)

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

Gomoto · **#22**

Problem 5:

I managed to play a good opening as black against a 5d opponent (Winrate black: 65%). But I also managed to blunder big time with the next move:

What is your next move? ;-)

Click Here To Show Diagram Code: [go]$$B $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . O O . O . . . . . . . . . . . . | $$ | . . . O O O X X . , . . . . . X . . . | $$ | . . X X O X . . X . . . . . . . . . . | $$ | . . . . X X . O X . . . . . . . . . . | $$ | . . . . . . . W O . . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . , . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . O . . . . . . . X . . X X . . | $$ | . O O , O X . . . , . O O X X , O . . | $$ | . O X X X . . . X . O . X O X . X . . | $$ | . . . . . . . . . . . . . O O O . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Solution:

a, b, c, (d) are valid moves for black.

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

Failure:
I blundered this ugly move :shock:

Click Here To Show Diagram Code: [go]$$B $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . O O . O . . . . . . . . . . . . | $$ | . . . O O O X X . , . . . . . X . . . | $$ | . . X X O X B . X . . . . . . . . . . | $$ | . . . . X X . O X . . . . . . . . . . | $$ | . . . . . . . O O . . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . , . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . O . . . . . . . X . . X X . . | $$ | . O O , O X . . . , . O O X X , O . . | $$ | . O X X X . . . X . O . X O X . X . . | $$ | . . . . . . . . . . . . . O O O . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Fedya · **#23**

Majordomo · **#24**

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

Just intuitively without checkin any reading or counting (so using my "blitz" eyes so to speak) I'd play a or b - probably A with the idea that I'll settle my weak group while harrassing white's only potential on the board then I'll get to go back and build while attacking his three stones

dfan · **#25**

a is my ten-seconds-of-thinking move as well, isolating White's three stones in the middle and potentially helping out an invasion on the left side. I think it might even protect against the cut at D14, though when I initially looked I was content to give those two stones away if they got cut.

Edit: no, it doesn't protect the cut. I'm still fine with giving away those two stones for a new string of stones on the 13th line.

Knotwilg · **#26**

Click Here To Show Diagram Code: [go]$$B $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . . . X . . O . . | $$ | . c . X . . . . . d . . . . . X . O . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . O b . e . . . . . . . . . X O O . | $$ | . . . . a . . . . . . . . . . X X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . , . . . . . , . . . . . , f . . | $$ | . . . . . . . . . . . . . . . h . . . | $$ | . . O . . . . . . . . . . g . . O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . X O . . . . . . . . . O . . . . . | $$ | . O O . . . . . . . . . . . . O O . . | $$ | . X O O . O . . X , . . . . X X O . . | $$ | . X X . . . . . X O . . . X . . X X . | $$ | . . . . X . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Two observations: the top is the big area and White is already slightly overconcentrated at the left side. Therefore the moves to consider are 'd', simply staking out the top, and 'b' gaining extra influence while overconcentrating White even more. This gives rise to the question whether 'b' is sente. Move 'c' and Bill's 'e' are too single minded for my taste. Neither affects the left side in a major way and so White has hands free to move into the big top side. In that respect 'c' is better than 'e' because it takes territory. Finally, Ed's 'f' attacks the white group from an uninteresting side. It's better to wait until the action at the top reveals whether a move around 'g' or 'h' would become double purpose.

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

Answering the question, I find White has more flexibility to switch his attention from the left side to the top and corner. Black's 'a' next does not look all that devastating, while White's 'b' grabs the corner. It seems to me that Black is making things too complicated.

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

I like the simplicity of 'd' in the original diagram, 1 here, better. I'm not entirely happy with the remainder of the development, but still feel that White is overconcentrated.

Gomoto · **#27**

Problem 6:
I blundered and instantly knew my reaction to this black play was wrong. What is your intuiton for white's next move?

Click Here To Show Diagram Code: [go]$$W $$ --------------------------------------- $$ | . . . . . . X . . . . . . X . . . . . | $$ | . . . . . X . X O . . X X O X X . . . | $$ | . . O . X X X O . . O O O O O . X . . | $$ | . . O X . X O O . , . . . . . O . X . | $$ | . . . . . X . O . . . . . . . O O O X | $$ | . . O . . . X X X . . . . O X O X X . | $$ | . . . O . X O X . . . . . O O X . . . | $$ | . . X O . O O . O . . . . . X X . . . | $$ | . . . X O . . . . X O . . . . X . . . | $$ | . . . X . . . X . X O . . . O O X X . | $$ | . . X . . O . . . O . . . . . . O X . | $$ | . . . . O . . X . . . . . . . O . O . | $$ | . . . . O X O X O . . . . . O O O . . | $$ | . X X X . X X . O . . . . . O X O O . | $$ | . . O X X O X X O . . . O O . X X X X | $$ | . . O , . O O X . , B . O X X X . O . | $$ | . . . O . O . . X . . O X . X . X O . | $$ | . . . . . . . . . . . . O X . . X X O | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Solution:

Fedya · **#28**

dfan · **#29**

sorin · **#30**

EdLee wrote:

EdLee · **#31**

Hi sorin, Thank you.

Knotwilg · **#32**

Uberdude · **#33**

My blitz policy network's answer:

Gomoto · **#34**

Problem 7:

White to play. Think twice, the next move could be decisive:

Click Here To Show Diagram Code: [go]$$B $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . X X . X . . O . . . . O . . . . | $$ | . . . , O O X . X O . . . . O X X . . | $$ | . . O . . . O X . . . . . . . O X . . | $$ | . . . . . . O X . . . . . . O X X . . | $$ | . . . . . . O . . . . . . . O O O X . | $$ | . . . . . . . . . . . . . . . O X . . | $$ | . . . . . . . . . . . . . . O X X . . | $$ | . . . , . . . . . , . . . . . , . . . | $$ | . . O . O . . . . . . . . . O . X . . | $$ | . . . B X O . . . . . . . . . . . . . | $$ | . . O . O X . . . . . . . . . . . . . | $$ | . . O X . X . . . . . . . . . . . . . | $$ | . . . X . X . . . . . X . . . . O . . | $$ | . . X , O . O . . O O X . . X , X . . | $$ | . . . X O . . . O . X . . . . X . . . | $$ | . . . X O . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Uberdude · **#35**

Connect below, black can escape with the 2 stones but you get a nice squeeze and give a good chase northwards, and the black lower left corner isn't alive yet which could come in handy for the white group on the lower side which is also not alive (so e.g. surrounding corner could be sente plus safety for that group). So probably black shouldn't escape. Cut on lower side later as a probe, I think black can block left and double hane but the aji is bad.

Knotwilg · **#36**

Uberdude · **#37**

@Knotwilg:

A way to improve reading skills 2.0

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