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 Post subject: Re: Tsumegos from real games
Post #41 Posted: Fri Nov 20, 2020 2:19 pm 
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Q18 seems to make miai.

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 Post subject: Re: Tsumegos from real games
Post #42 Posted: Wed Dec 09, 2020 7:45 am 
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Problem #12, Black to play. It seems that Black can kill and that both players (1k Tygem) missed that during all the game.

Click Here To Show Diagram Code
[go]$$Bc Black to play
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . . . . . O . . . . . |
$$ | . . . , O . . . . , . . . . . X . . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . . . . . . . . . . . |
$$ | . . O , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . O . . . . . . . . . . . |
$$ | . . . . . . . O X . . . . . . . . . . |
$$ | . . O . . . . O X . . . . . . . . . . |
$$ | . O O . . . . O X . X X X . . . X . . |
$$ | . X X O O O O X X , O . O X . , . . . |
$$ | X . . X O X X O . O . . O O X X . . . |
$$ | . X X X X X . O . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


Answer:

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

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 Post subject: Re: Tsumegos from real games
Post #43 Posted: Fri Dec 11, 2020 10:48 am 
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Problem #13: Black to play and kill the bottom group.

Click Here To Show Diagram Code
[go]$$Bc Black to play
$$ ---------------------------------------
$$ | . . . X . . . . . . . . . X O O . O . |
$$ | . . X O O O . . O X . . . X O . O O X |
$$ | . . X O . . O X O . X . . X X O O X . |
$$ | . . O X O O . O . , . . . X X X X . X |
$$ | . . X X . . . . . X O . O X O . . X . |
$$ | . . . X X X O . . . . O X O O . . . . |
$$ | . . X O O O X X X . O . X X . O X . . |
$$ | . X . X . X O X . O O X X . . O . O . |
$$ | . O X X X O O X X X O O X . . . O . . |
$$ | . . O O O O . O X X O . O X . , . . . |
$$ | . . . . . . . O O X X O O X . . . . . |
$$ | . . . . O X X X O O O . O X . . O . . |
$$ | . . O . . O . . X O O . O X . . O O . |
$$ | . . . . . O X . X X O O X . X X O X . |
$$ | . . . . . O X . . O X X X X . . X X . |
$$ | . . . O O X . . . O . . . . X X O O . |
$$ | . O O X X X . . X . O X X O . X . . . |
$$ | . . X . . . . . X O . O O . O X X . . |
$$ | . . . . . . . . O . . . . . . O . . . |
$$ ---------------------------------------[/go]


Answer:
Click Here To Show Diagram Code
[go]$$Bc Answer
$$ ---------------------------------------
$$ | . . . X . . . . . . . . . X O O . O . |
$$ | . . X O O O . . O X . . . X O . O O X |
$$ | . . X O . . O X O . X . . X X O O X . |
$$ | . . O X O O . O . , . . . X X X X . X |
$$ | . . X X . . . . . X O . O X O . . X . |
$$ | . . . X X X O . . . . O X O O . . . . |
$$ | . . X O O O X X X . O . X X . O X . . |
$$ | . X . X . X O X . O O X X . . O . O . |
$$ | . O X X X O O X X X O O X . . . O . . |
$$ | . . O O O O . O X X O . O X . , . . . |
$$ | . . . . . . . O O X X O O X . . . . . |
$$ | . . . . O X X X O O O . O X . . O . . |
$$ | . . O . . O . . X O O . O X . . O O . |
$$ | . . . . . O X . X X O O X . X X O X . |
$$ | . . . . . O X . . O X X X X . . X X . |
$$ | . . . O O X . . . O . . . . X X O O . |
$$ | . O O X X X . . X 1 O X X O . X . . . |
$$ | . . X . . . . . X O . O O . O X X . . |
$$ | . . . . . . . . O . . . . . . O . . . |
$$ ---------------------------------------[/go]

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 Post subject: Re: Tsumegos from real games
Post #44 Posted: Mon Jan 11, 2021 1:35 am 
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This ridiculous position is from a blitz game.

Problem #14: Black to play. Which group should Black choose to kill and how?

Click Here To Show Diagram Code
[go]$$Bc Black to play
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . X . . . |
$$ | . . O . . . . . . . . O . . X . X O . |
$$ | . X X O O O . . . . . . . X X . X O . |
$$ | . . . X X X O O O O . O . . . X O O . |
$$ | . . . . . . X X X O . . . . . X X O . |
$$ | . . . . . . . . . . . . . . . X O O . |
$$ | . . . . . X . . X . . . . . . . X . . |
$$ | . . . . . X O . . . . . . . . . . . . |
$$ | . . . X X O . . . X . . . . O O . . . |
$$ | . . X O O . O . O O X . . X O X . . . |
$$ | . . . . . . . . . . X . X X X O O . . |
$$ | . . X . . . O . . O X X O O X X O . . |
$$ | . . . . X O O . . . X O O . O X O . . |
$$ | . . . . . X O X . . X O . O . X . . . |
$$ | . . X X . X X . . . X . . . . X O . . |
$$ | . . O , . O . . . , X O . O O X O . . |
$$ | . . . O . . . O . . X . O . X X O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


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


"a" kills a bigger group than "b".

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 Post subject: Re: Tsumegos from real games
Post #45 Posted: Sun Jan 17, 2021 9:35 am 
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Problem #15: Black to play. What is the status of the lower right corner?

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


Click Here To Show Diagram Code
[go]$$Bc Ko
$$ | . X O X O X . X X . . . . . . X O O X |
$$ | . O O O X X . O X . X X O . O O X X . |
$$ | . . . . . . . O X O . . . . . . X X . |
$$ | . . . . X . X X O X X X X . O O O X . |
$$ | . . O O O . . . O O O O . X X X X O . |
$$ | . . X X O O O O . . . . . . . X O O . |
$$ | . . . . X X X O . . . . . . X O . 2 1 |
$$ | . . . . . . . . . . . . . . 3 . O . . |
$$ ---------------------------------------[/go]

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