DieterVerhofstadt/2021 ABC of mistakes

Sub-page of DieterVerhofstadt
[Diagram]
Mistake 1  

Should White connect at a, atari at b or play c?

[Diagram]
Mistake 2  

Should White try to save his stones with a, sacrifice with b or play elsewhere c?

[Diagram]
Mistake 3  

After black+circle White can make the natural answer at a, flatten Black's moyo while attacking the lower right group with b or play c. Which one is better?

[Diagram]
Mistake 4  

White has a big lead (33 points). Black is trying to stage an upset. White lost 10 points by making the wrong choice between a, b and c.

[Diagram]
Mistake 5  

White's left side group needs to pay attention to its eyespaces. Should it play a, b or c? White's choice lost another 9 points here.

[Diagram]
Mistake 6  

A ko has developed along the left side. Which ko threat should White play, a, b or c?

[Diagram]
Mistake 7  

A skirmish has been going on in the lower right. How to continue? Turn at a, the border of two moyos? Draw out and fight at b? Or take the big point at c? White's decision lost 4 points and dropped him from 80% to 60%.

[Diagram]
Mistake 8  

White has the upper hand in this game. Should he cut at a or b? Or is cutting not very valuable and is this the right time to invade the corner at c? White's decision cost him 13 points and brought the game back in balance.

[Diagram]
Mistake 9  

White has ended the ko in the upper right and Black follows up the threat at B1 with cutting at B3. White's next move is not game losing but there was no need to spoil 35 points of a 60 point lead. Where should White play, a, b or c?

[Diagram]
Mistake 10  

This is more or less a joseki question. Should Black press at a, cut at b or connect at c?

Black's choice dropped him from 77% and 4 pts to 30% ans -2.

[Diagram]
Mistake 11  

Things are hot in the upper left. Should Black keep White disconnected at a, cut to capture at b or play the vital point of c?

Black's choice lost 2,5 points but shifted the balance to White again and was the start of lots of trouble.

[Diagram]
Mistake 12  

Black was a little confused here. Take a good look: where would you play?

[Diagram]
Mistake 13  

B1 is enlarging Black's moyo. What should White do?

[Diagram]
Mistake 14  

a cut, b connect, c sabaki

[Diagram]
Mistake 15  

a kill the aji in the corner; b forcing Black into bad shape; c sabaki

[Diagram]
Mistake 16  

This is a big mistake in the opening. After black+circle, White leads already by komi, provided he makes the right move. What is biggest?

  • a following Leela Zero's opening gospel and approaching the 3-4?
  • b following up locally, avoiding to be shut in?
  • c securing the corner while kicking Black's approach stone?
[Diagram]
Mistake 17  

Black did not hesitate to play the double hane. After the atari and connect, White can choose to follow through in the lower left witg a, sacrifice three stones and make a ponnuki at b, or save his corner at c

[Diagram]
Mistake 18  

How to respond to the cut? Counterattack at a? Or connect at b or c?

[Diagram]
Mistake 19  

How to respond to W1?

[Diagram]
Mistake 20  

How to maximize chances of living?

[Diagram]
Mistake 21  

White builds a moyo. Limit and grow (a), peep before reducing (b), or (c) play elsewhere?

[Diagram]
Mistake 22  

Black builds a huge moyo. Should White reduce (a, c), invade (b, d) or play away (e, f)? The move I chose wasn't really bad and I'm actually quite happy with it.

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Mistake 23  
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Mistake 24  
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Mistake 25  
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Mistake 26  
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Mistake 27  
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Mistake 28  
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Mistake 29  
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Mistake 30  
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Mistake 31  
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Mistake 32  
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Mistake 33  
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Mistake 34  
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Mistake 35  
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Mistake 36  
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Mistake 37  
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Mistake 38  
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Mistake 39  
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Mistake 40  
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Mistake 41  
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Mistake 42  
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Mistake 43  
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Mistake 44  
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Mistake 45  
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Mistake 46  
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Mistake 47  
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Mistake 48  
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Mistake 49  
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Mistake 50  
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Mistake 51  
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Mistake 52  
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Mistake 53  
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Mistake 54  
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Mistake 55  
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Mistake 56  
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Mistake 57  
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Mistaje 58  
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Mistake 59  
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Mistake 60  
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Mistake 61  
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Mistake 62  
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Mistake 63  
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Mistake 64  
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Mistake 65  
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Mistake 66  
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Mistake 67  
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Mistake 68  
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Mistake 69  
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Mistake 70  
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Mistke 71  
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Mistake 72  
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Mistake 73  
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Mistake 74  
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Mistake 75  
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Mistake 76  
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Mistake 77  
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Mistake 78  
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Mistake 79  
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Mistake 80  
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Mistake 81  

DieterVerhofstadt/2021 ABC of mistakes last edited by Dieter on May 16, 2021 - 15:58
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