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 Post subject: 2 Tsumegos from a teaching game
Post #1 Posted: Sun Jan 16, 2011 11:23 pm 
Lives in gote
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KGS: go1986
this is from a teaching game i played today with a 1d on KGS

i'm black and i want to kill the square marked chain of white stones in the middle of my two sloppy black groups

black to play and kill

a observer 6d player solved it, so i already know the answer
i think its only one answer maybe u can find a easier way

its pretty tough

the 1d didn't see it so its should be good problem

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


if you do solve it, i would be interested to know how long it took u to solve it
so please post your working time

the 6 dan said it could be solved under 10 minutes at the most
but the 1 dan said its too much reading
for a 30 minute game,
you would waste too much time reading it out

what are your thoughts?


the 6d gave me this problem and a few hints so i'm pretty close to solving it

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


its a challenge he said its dan level

black to play & live

Tsumego is fun! :study:

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 Post subject: Re: 2 Tsumegos from a teaching game
Post #2 Posted: Sun Jan 16, 2011 11:53 pm 
Gosei
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Haven't attempted to solve these yet, just fixing the diagrams. You should leave one line of just $$ after the go diagrams :).

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


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

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Each of us woke up one moment and here we were in the darkness.
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No understanding of what is now, no knowledge of what will be.

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 Post subject: Re: 2 Tsumegos from a teaching game
Post #3 Posted: Mon Jan 17, 2011 12:02 am 
Lives in gote
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Thanks I was wondering why my diagrams looked funny

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 Post subject: Re: 2 Tsumegos from a teaching game
Post #4 Posted: Mon Jan 17, 2011 6:18 pm 
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here are the answers for the kyu players like me
u gotta hit next game i messed up and created a multigame sgf
so just hit next game to see the solution



i still cant find the solution to the second problem
i been looking at it for a day now
im starting to think there is no solution
he said its from the igo hatsuyoron
so maybe somebody i can look it up
:study:

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 Post subject: Re: 2 Tsumegos from a teaching game
Post #5 Posted: Mon Jan 17, 2011 8:32 pm 
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Rank: Dan player
My comments for 1986:

Problem 1

I admit I never solved this problem. However, I'm not entirely convinced of the solution. Please provide variations for the following, thank you.

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


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


Problem 2

The main line of this problem contains more than 20 moves.

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 Post subject: Re: 2 Tsumegos from a teaching game
Post #6 Posted: Mon Jan 17, 2011 11:59 pm 
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wow he missed something, i like your variations they kill black completely
well i cant read out easy life, for black,
i guess even 6ds mess up :lol:

so this is to much reading for a actual game with problem # one
it takes to long to read its better to just seek easy life and move on to something else

here is my guess to variation 1

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

I'm thinking if white ignores 3 i can live with the Atari to the f16 stone

i made 11-13 a- c not sure how to continue #'s in diagrams

the second variation kills black it takes away a liberty
but im no expert so there is probably a way to spoil my plan


the second problem does have a solution thats interesting
he showed me a few ideas with the position i still have not figured it out

i got the cut so far and i think i found a ko


well back to the games

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 Post subject: Re: 2 Tsumegos from a teaching game
Post #7 Posted: Tue Jan 18, 2011 11:35 pm 
Lives in gote

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IGS: ethanb
1986 wrote:
i still cant find the solution to the second problem
i been looking at it for a day now
im starting to think there is no solution
he said its from the igo hatsuyoron
so maybe somebody i can look it up
:study:


From the Igo Hatsuyoron? It's almost certainly pro-dan level, then - I'm pretty sure everything in that book (scroll?) is.

I'm not saying don't study it! With a 6d giving you hints, it should be worthwhile, but maybe don't spend more than 1 or 2 hours a day on it (unless you really want to, of course.)

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 Post subject: Re: 2 Tsumegos from a teaching game
Post #8 Posted: Wed Jan 19, 2011 1:36 am 
Lives with ko

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Rank: Dan player
For the second problem, in my opinion:
1. It is an amazing problem on its own.
2. The solution contains move(s) that are not recommended of typical play, therefore I do not think it is a good study problem for typical problems.
3. It requires a lot of careful reading in unexpected places, therefore it is a suitable problem if you want to improve on this area.

For some reason, the solution for this problem seems to be hardwired in my brain. So here it is, if you want to peek. Main line only.

SPOILER - SOLUTION FOR PROBLEM 2 - SPOILER
Click Here To Show Diagram Code
[go]$$B Solution
$$ | . . . . . . . . . . . .
$$ | . . . , . . . . . , . .
$$ | . . . O . . . . . . . .
$$ | . . . O . O . . . . . .
$$ | . . O . . . O . . . . .
$$ | . O . X O O . . . . . .
$$ | . O X . X . O . . . . .
$$ | . . X 9 X O . . . , . .
$$ | . . X O O 1 2 . . X . .
$$ | . . . 5 6 3 4 . . . . .
$$ | . . . 7 8 0 . . . . . .
$$ ------------------------[/go]


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


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

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