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 Post subject: Re: Basic endgame problem -- feedback requested
Post #21 Posted: Sun Jan 30, 2011 5:57 pm 
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@ Loons
Both concerning my diagrams and the question what is hard (at least for me)
Click Here To Show Diagram Code
[go]$$W White to play. Japanese rules. 6.5 komi.
$$ ---------------------------
$$ | . . X O . . . O O . b . . |
$$ | X . X O O O O . O . X X . |
$$ | . X O 5 . 7 . O O O X O . |
$$ | 0 X X X X 9 X a X O 8 X . |
$$ | O O O O X . X . X X . X . |
$$ | . . O X 2 X . X O X . X . |
$$ | . . O X 1 X . X O X X X . |
$$ | . O O 3 O X . X O 4 O X . |
$$ | . X O O X X X O O X . X . |
$$ | . O . O O X X . O X X X O |
$$ | . . O . . . X O O O O X X |
$$ | . . O O X X X O . O O X . |
$$ | . . O W O O X O O . O 6 . |
$$ ---------------------------[/go]

This is my solution so far (with a, b following :b10: ). Notice that on the lower side I have a marked white stone that simplifies the diagram, so I haven't actually solved the whole thing.

As for the other question:
Quote:
Also, it might be worth noting that the way I, and I imagine freegame and jts all solved this wasn't an extensive calculation; starting with white, we looked for their best play, then did the same for black, then white again etc etc and so came to our solutions that way (maybe with some notes added in posterity).

For that you first have to realize that the play at :b8: it bigger than protecting after :w7: And I mean the bottom side ...!?! That's just kind of horrendous send 2 return 1 thing that could easily turn into a ko. I have no idea how to read that.

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 Post subject: Re: Basic endgame problem -- feedback requested
Post #22 Posted: Sun Jan 30, 2011 6:07 pm 
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Loons wrote:
I'm a little curious; ye fellow sdks who are saying "seems very hard" - could you go into more detail ? Which step(s) are ambiguous, for example. I know I find the e-1 affair a little niggle-y to consciously think about (a two point gote that makes a new two point gote if black plays it? Is that how you describe it?), but not really write-off material.

Bill; I added a small note for you in my previous post.


Yes, that is helpful. Thanks. :)


Quote:
Also, how hard do you find this sort of diagram/problem to create ?


In the past I have had trouble with finding room for the plays, and with making sure the number of stones are right. Now, instead of starting with the plays, I started with a random pattern of 50 Black stones and 49 White stones. ;) I also used a 13x13 board instead of an 11x11 board, although the problem will fit a smaller board. Small secret:

I wanted the 3/4 point moves not to be exact opposites, which would obviously make them miai, with a sum to zero. That necessitated an odd number of 1/2 point moves, to make all of the plays less than 1 sum to an integer, so that the problem is one of getting the last play. :) That arrangement made it not so obvious that that is the point.


Quote:
a hint for mw42
mw; saying twelve is incorrect is true, but might be misleading.


Well, to tell him which White play was wrong would spoil his fun, wouldn't it? ;)

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 Post subject: Re: Basic endgame problem -- feedback requested
Post #23 Posted: Sun Jan 30, 2011 6:08 pm 
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 Post subject: Re: Basic endgame problem -- feedback requested
Post #24 Posted: Sun Jan 30, 2011 6:11 pm 
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mw42 wrote:
Bill Spight wrote:

:b12: is a mistake.


Thanks for having a look at my solution, but I must admit your comment baffles me. :-)


Well, finding the right play for Black at that point is easier than the original problem, and will help you to solve it. :)

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 Post subject: Re: Basic endgame problem -- feedback requested
Post #25 Posted: Sun Jan 30, 2011 6:41 pm 
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:!:

L10 and F11 weren't 1 points moves like I was thinking, but 1.5 point gotes that need to be traded. So, B could have won by 1/2 point if he played F11 instead of :b12:.


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 Post subject: Re: Basic endgame problem -- feedback requested
Post #26 Posted: Sun Jan 30, 2011 7:09 pm 
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mw42 wrote:
:!:

L10 and F11 weren't 1 points moves like I was thinking, but 1.5 point gotes that need to be traded. So, B could have won by 1/2 point if he played F11 instead of :b12:.


Bingo! :)

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 Post subject: Re: Basic endgame problem -- feedback requested
Post #27 Posted: Mon Jan 31, 2011 6:58 am 
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Loons wrote:
I'm a little curious; ye fellow sdks who are saying "seems very hard" - could you go into more detail ?


I'm not really qualified to say what problem is or isn't appropriate for the 10 kyu level, but there are a number of reasons it seems like it would be hard to me.
(i) The problem is quite long. When I was a DDK any problem with sequences of more than, oh, 8 (non-ladder) moves was effectively impossible because the permutations began to swim around in my head, even if each move was doable.
(ii) It only took me a few seconds to assure myself that there were no L&D issues in the problem, but I think that would take a 10k much longer. Since that effects sente and semedori, the fact that the problem is intended to be quite easy might not be clear to a 10k.
(iii) A "problem for a 10k" shouldn't just be a problem that a 10k can (probably) solve, it should be a problem where the 10k can identify a false solution if he spends a few minutes double-checking his work.
(iv) The 1 pt move with the 1 pt follow-up requires you to understand tedomari. Even though I knew the concept I think I would have completely overlooked that when I was 10k.

My 0.02 USD. Bill has made simpler problems before that I think I actually did when I was ~10k, and which I found extremely helpful and enlightening.


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 Post subject: Re: Basic endgame problem -- feedback requested
Post #28 Posted: Mon Jan 31, 2011 7:15 am 
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Third and final attempt
I am now going to look at the lower side.

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

:ec: is a 2 point play by white, but if black plays it, he gets 2 points and a new 1 Point play is created. Following the logic I laid out in previous posts White should not capture immediately but instead play another 2 point play. Therefore black should first eliminate all 2-point moves before capturing. Now I left with two possibilities: Either the play at :ex: or :ec: is bigger for white.

Click Here To Show Diagram Code
[go]$$W Which play is bigger?
$$ ---------------------------
$$ | . . X O . . . O O . . . . |
$$ | X . X O O O O . O . X X . |
$$ | . X O 5 . M . O O O X O . |
$$ | . X X X X . X . X O M X . |
$$ | O O O O X . X . X X . X . |
$$ | . . O X 2 X . X O X . X . |
$$ | . . O X 1 X . X O X X X . |
$$ | . O O 3 O X . X O 4 O X . |
$$ | . X O O X X X O O X . X . |
$$ | . O . O O X X . O X X X O |
$$ | . . O . . . X O O O O X X |
$$ | . . O O X X X O . O O X . |
$$ | . . O C O O X O O . O 6 . |
$$ ---------------------------[/go]

Hey, I just realized that that a completely irrelevant question. White has sente, so he gets one of the :ex: points and the :ec: point. But if he first plays one of the :ex: points, black gets a choice. You shouldn’t leave your opponent a choice :)


My (probably wrong) solution
Click Here To Show Diagram Code
[go]$$W Which play is bigger?
$$ ---------------------------
$$ | . . X O . . . O O . . . . |
$$ | X . X O O O O . O . X X . |
$$ | . X O 5 . 9 . O O O X O . |
$$ | . X X X X 0 X . X O 8 X . |
$$ | O O O O X . X . X X . X . |
$$ | . . O X 2 X . X O X . X . |
$$ | . . O X 1 X . X O X X X . |
$$ | . O O 3 O X . X O 4 O X . |
$$ | . X O O X X X O O X . X . |
$$ | . O . O O X X . O X X X O |
$$ | . . O . . . X O O O O X X |
$$ | . . O O X X X O . O O X . |
$$ | . . O 7 O O X O O . O 6 . |
$$ ---------------------------[/go]


Click Here To Show Diagram Code
[go]$$Wm11 Which play is bigger?
$$ ---------------------------
$$ | . . X O . . . O O . 2 . . |
$$ | X . X O O O O . O . X X . |
$$ | . X O O . O . O O O X O . |
$$ | 3 X X X X X X 1 X O X X . |
$$ | O O O O X . X . X X . X . |
$$ | . . O X X X . X O X . X . |
$$ | . . O X O X . X O X X X . |
$$ | . O O O O X . X O X O X . |
$$ | . X O O X X X O O X . X . |
$$ | . O . O O X X . O X X X O |
$$ | . . O . 4 . X O O O O X X |
$$ | . . O O X X X O . O O X . |
$$ | . . O O O O X O O . O X . |
$$ ---------------------------[/go]


Final thoughts
There is no way this is a 10k problem. I spent 15 minutes on a simplified version and I now realize I still missed a point :sad: If my solution is even in the ballpark of correct I think this problem would be solvable by an 5k with extensive endgame experience in a reasonable time. I have now spent a total of about 40 minutes on this problem and I think I learned a little, time to check all the hide tags.

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 Post subject: Re: Basic endgame problem -- feedback requested
Post #29 Posted: Mon Jan 31, 2011 7:40 am 
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Mnemonic wrote:
Third and final attempt
I am now going to look at the lower side.

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

:ec: is a 2 point play by white, but if black plays it, he gets 2 points and a new 1 Point play is created. Following the logic I laid out in previous posts White should not capture immediately but instead play another 2 point play. Therefore black should first eliminate all 2-point moves before capturing. Now I left with two possibilities: Either the play at :ex: or :ec: is bigger for white.

Click Here To Show Diagram Code
[go]$$W Which play is bigger?
$$ ---------------------------
$$ | . . X O . . . O O . . . . |
$$ | X . X O O O O . O . X X . |
$$ | . X O 5 . M . O O O X O . |
$$ | . X X X X . X . X O M X . |
$$ | O O O O X . X . X X . X . |
$$ | . . O X 2 X . X O X . X . |
$$ | . . O X 1 X . X O X X X . |
$$ | . O O 3 O X . X O 4 O X . |
$$ | . X O O X X X O O X . X . |
$$ | . O . O O X X . O X X X O |
$$ | . . O . . . X O O O O X X |
$$ | . . O O X X X O . O O X . |
$$ | . . O C O O X O O . O 6 . |
$$ ---------------------------[/go]

Hey, I just realized that that a completely irrelevant question. White has sente, so he gets one of the :ex: points and the :ec: point. But if he first plays one of the :ex: points, black gets a choice. You shouldn’t leave your opponent a choice :)


My (probably wrong) solution
Click Here To Show Diagram Code
[go]$$W Which play is bigger?
$$ ---------------------------
$$ | . . X O . . . O O . . . . |
$$ | X . X O O O O . O . X X . |
$$ | . X O 5 . 9 . O O O X O . |
$$ | . X X X X 0 X . X O 8 X . |
$$ | O O O O X . X . X X . X . |
$$ | . . O X 2 X . X O X . X . |
$$ | . . O X 1 X . X O X X X . |
$$ | . O O 3 O X . X O 4 O X . |
$$ | . X O O X X X O O X . X . |
$$ | . O . O O X X . O X X X O |
$$ | . . O . . . X O O O O X X |
$$ | . . O O X X X O . O O X . |
$$ | . . O 7 O O X O O . O 6 . |
$$ ---------------------------[/go]


Click Here To Show Diagram Code
[go]$$Wm11 Which play is bigger?
$$ ---------------------------
$$ | . . X O . . . O O . 2 . . |
$$ | X . X O O O O . O . X X . |
$$ | . X O O . O . O O O X O . |
$$ | 3 X X X X X X 1 X O X X . |
$$ | O O O O X . X . X X . X . |
$$ | . . O X X X . X O X . X . |
$$ | . . O X O X . X O X X X . |
$$ | . O O O O X . X O X O X . |
$$ | . X O O X X X O O X . X . |
$$ | . O . O O X X . O X X X O |
$$ | . . O . 4 . X O O O O X X |
$$ | . . O O X X X O . O O X . |
$$ | . . O O O O X O O . O X . |
$$ ---------------------------[/go]


Final thoughts
There is no way this is a 10k problem. I spent 15 minutes on a simplified version and I now realize I still missed a point :sad: If my solution is even in the ballpark of correct I think this problem would be solvable by an 5k with extensive endgame experience in a reasonable time. I have now spent a total of about 40 minutes on this problem and I think I learned a little, time to check all the hide tags.


Many thanks, Mnemonic, for sharing your thinking. :) Even though you did not solve the problem, I am quite impressed. :)

Would it have helped if:

You had already been taught that the moves :w5:, :b6:, :w7:, and :b14: were all the same size? And, in particular, that if Black takes at 7, the recapture is also the same size?

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 Post subject: Re: Basic endgame problem -- feedback requested
Post #30 Posted: Mon Jan 31, 2011 7:58 am 
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Thanks to people for pointing out that the size of the problem increased the difficulty. :)

My thought was to be realistic by adding some small, supposedly easy plays. What if I eliminated them?

Click Here To Show Diagram Code
[go]$$W White to play. Japanese rules. 6.5 komi.
$$ ---------------------------
$$ | . . X O . . . O O O O X . |
$$ | X . X O O O O . O . X X . |
$$ | . X O . . X . O O O X O . |
$$ | X X X X X . X O X O O X . |
$$ | O O O O X . X . X X X X . |
$$ | . . O X . X . X O X . X . |
$$ | . . O X . X . X O X X X . |
$$ | . O O . O X . X O . O X . |
$$ | . X O O X X X O O X . X . |
$$ | . O . O O X X . O X X X O |
$$ | . . O . . . X O O O O X X |
$$ | . . O O X X X O . O O X . |
$$ | . . O . O O X O O . O . . |
$$ ---------------------------[/go]


Better? Worse? Meh?

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 Post subject: Re: Basic endgame problem -- feedback requested
Post #31 Posted: Mon Jan 31, 2011 8:11 am 
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:shock: Arrrg, what? I got slaughter!?! :sad:

Dan players just got a whole lot scarier :sad: Like you weren’t scary enough already :sad:

Answering jts
For your (i), how do you count your moves? Is first black, then white 1 or 2? If it's 2 then 8 seems reasonable, otherwise correct down to 3 :sad:
About your (ii), ddk are pretty good at life and death. I mean the reason we got to 10k is because our groups survived (That is was with 2 point in gote, completely enclosed is another topic, but that's what sdk is for :) )


And then, can someone please explain where I went wrong? :scratch:
:b6: at :wc:
Click Here To Show Diagram Code
[go]$$W copy of mw42's run
$$ ---------------------------
$$ | . . X O . . . O O . 0 . . |
$$ | X . X O O O O . O . X X . |
$$ | . X O 7 . 9 . O O O X O . |
$$ | . X X X X . X . X O 8 X . |
$$ | O O O O X . X . X X . X . |
$$ | . . O X . X . X O X . X . |
$$ | . . O X 1 X . X O X X X . |
$$ | . O O . O X . X O 2 O X . |
$$ | . X O O X X X O O X . X . |
$$ | . O . O O X X . O X X X O |
$$ | . . O . 5 . X O O O O X X |
$$ | . . O O X X X O . O O X . |
$$ | . . O 4 W O X O O . O 3 . |
$$ ---------------------------[/go]


Click Here To Show Diagram Code
[go]$$Wcm11 copy of mw42's run
$$ ---------------------------
$$ | . . X O . . . O O . X . . |
$$ | X . X O O O O . O . X X . |
$$ | . X O O . O . O O O X O . |
$$ | 2 X X X X 3 X 1 X O X X . |
$$ | O O O O X . X . X X . X . |
$$ | . . O X 4 X . X O X . X . |
$$ | . . O X O X . X O X X X . |
$$ | . O O 5 O X . X O X O X . |
$$ | . X O O X X X O O X . X . |
$$ | . O . O O X X . O X X X O |
$$ | . . O . O . X O O O O X X |
$$ | . . O O X X X O . O O X . |
$$ | . . O X X . X O O . O O . |
$$ ---------------------------[/go]


My :b2: puts the white stones in atari at :b14:. Now, you cannot capture the black stone, but it is sente (and you should play sente before gote, right?) or is it just a stylistic choice?

:b4: ???
:b6: ?????

The rest looks pretty much like what I had, but I really don't understand the bottom side. Isn't that just a 2 point gote move? (And then a 1 point gote move??)

Edit: @ Bill
Yes, that would have helped a lot. Although I would also like to know why :) At least I figured the 1,5 gote moves out.
2. Edit: The same for me. The only way I could read this was to actually write down what I was thinking and double checked everything. A few more moves weren't that much harder. (Like I said, there is no chance in Hell that this will ever play a role in any of my games)

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 Post subject: Re: Basic endgame problem -- feedback requested
Post #32 Posted: Mon Jan 31, 2011 8:45 am 
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Loons wrote:
I'm a little curious; ye fellow sdks who are saying "seems very hard" - could you go into more detail ? Which step(s) are ambiguous, for example. I know I find the e-1 affair a little niggle-y to consciously think about (a two point gote that makes a new two point gote if black plays it? Is that how you describe it?), but not really write-off material.


I missed this move, for instance:

Click Here To Show Diagram Code
[go]$$W White to play. Japanese rules. 6.5 komi.
$$ ---------------------------
$$ | . . X O . . . O O . . . . |
$$ | X . X O O O O . O . X X . |
$$ | . X O . . . . O O O X O . |
$$ | . X X X X . X . X O . X . |
$$ | O O O O X . X . X X . X . |
$$ | . . O X . X . X O X . X . |
$$ | . . O X 1 X . X O X X X . |
$$ | . O O a O X . X O . O X . |
$$ | . X O O X X X O O X . X . |
$$ | . O . O O X X . O X X X O |
$$ | . . O . . . X O O O O X X |
$$ | . . O O X X X O . O O X . |
$$ | . . O . O O X O O . O . . |
$$ ---------------------------[/go]

My guess for first move was 'a'. Other than that, it's hard for me to calculate the point values of gote moves and pick them in order. I think I do it better when the values are further apart, or there are less zones of contention. I'm often surprised by the score in my games.

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Post #33 Posted: Mon Jan 31, 2011 8:48 am 
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Bill Spight wrote:

My thought was to be realistic by adding some small, supposedly easy plays. What if I eliminated them?


Better? Worse? Meh?


Better. All of the plays are small and easy, but since the problem asks us to find the right order of plays, less choices would make it easier to handle. Fewer possibilities would also make counting and comparing less of a chore.

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Post #34 Posted: Mon Jan 31, 2011 9:12 am 
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Mnemonic wrote:
:shock: Arrrg, what? I got slaughter!?! :sad:

Dan players just got a whole lot scarier :sad: Like you weren’t scary enough already :sad:

Answering jts
For your (i), how do you count your moves? Is first black, then white 1 or 2? If it's 2 then 8 seems reasonable, otherwise correct down to 3 :sad:
About your (ii), ddk are pretty good at life and death. I mean the reason we got to 10k is because our groups survived (That is was with 2 point in gote, completely enclosed is another topic, but that's what sdk is for :) )


And then, can someone please explain where I went wrong? :scratch:
:b6: at :wc:
Click Here To Show Diagram Code
[go]$$W copy of mw42's run
$$ ---------------------------
$$ | . . X O . . . O O . 0 . . |
$$ | X . X O O O O . O . X X . |
$$ | . X O 7 . 9 . O O O X O . |
$$ | . X X X X . X . X O 8 X . |
$$ | O O O O X . X . X X . X . |
$$ | . . O X . X . X O X . X . |
$$ | . . O X 1 X . X O X X X . |
$$ | . O O . O X . X O 2 O X . |
$$ | . X O O X X X O O X . X . |
$$ | . O . O O X X . O X X X O |
$$ | . . O . 5 . X O O O O X X |
$$ | . . O O X X X O . O O X . |
$$ | . . O 4 W O X O O . O 3 . |
$$ ---------------------------[/go]


Click Here To Show Diagram Code
[go]$$Wcm11 copy of mw42's run
$$ ---------------------------
$$ | . . X O . . . O O . X . . |
$$ | X . X O O O O . O . X X . |
$$ | . X O O . O . O O O X O . |
$$ | 2 X X X X 3 X 1 X O X X . |
$$ | O O O O X . X . X X . X . |
$$ | . . O X 4 X . X O X . X . |
$$ | . . O X O X . X O X X X . |
$$ | . O O 5 O X . X O X O X . |
$$ | . X O O X X X O O X . X . |
$$ | . O . O O X X . O X X X O |
$$ | . . O . O . X O O O O X X |
$$ | . . O O X X X O . O O X . |
$$ | . . O X X . X O O . O O . |
$$ ---------------------------[/go]


My :b2: puts the white stones in atari at :b14:. Now, you cannot capture the black stone, but it is sente (and you should play sente before gote, right?) or is it just a stylistic choice?

:b4: ???
:b6: ?????

The rest looks pretty much like what I had, but I really don't understand the bottom side. Isn't that just a 2 point gote move? (And then a 1 point gote move??)

Edit: @ Bill
Yes, that would have helped a lot. Although I would also like to know why :) At least I figured the 1,5 gote moves out.
2. Edit: The same for me. The only way I could read this was to actually write down what I was thinking and double checked everything. A few more moves weren't that much harder. (Like I said, there is no chance in Hell that this will ever play a role in any of my games)


:b4: is a 2 point gote move (2 prisoners for black if he plays there, 0 points for white if she plays there). :b6: is also a 2 point gote move (1 point of territory for black if he plays there, 1 prisoner for white if she plays there). :w5: is also a 2 point gote move (1 point of territory for black if he plays there, 1 point of territory for white if she plays there).

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 Post subject: Re: Basic endgame problem -- feedback requested
Post #35 Posted: Mon Jan 31, 2011 1:02 pm 
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@ mw42
Ah, it's starting to make sense (not really :) ), so :w3: , :b4: , :w5: , :b6: and :w7: are all 2 point plays. Is there a reason why black takes the 2 stones at :b4: ? With that he adds an additional 2 point play, doesn't he? (Thereby make it an uneven number with white getting one more.) Isn’t that bad for black? What I'm asking is, is this also a correct sequence?

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

Click Here To Show Diagram Code
[go]$$Wcm11 Also posible?
$$ ---------------------------
$$ | . . X O . . . O O . 2 . . |
$$ | X . X O O O O . O . X X . |
$$ | . X . X . O . O O O X O . |
$$ | 3 X X X X 1 X 4 X O X X . |
$$ | O O O O X . X . X X . X . |
$$ | . . O X X X . X O X . X . |
$$ | . . O X O X . X O X X X . |
$$ | . O O O O X . X O X O X . |
$$ | . X O O X X X O O X . X . |
$$ | . O . O O X X . O X X X O |
$$ | . . O . X . X O O O O X X |
$$ | . . O O X X X O . O O X . |
$$ | . . O O O O X O O . O O . |
$$ ---------------------------[/go]


Edit
Seems like you answered my question already in the PM.
Quote:
There is also a subtlety with D1 you might be missing.

Scenario 1: White plays D1 (+2), then black (-2), white (+2), black (-2) exchange two point moves. Therefore, white gains 0.

Scenario 2: White plays avoiding D1 (+2), black (-2), white (+2), black plays D1 (-2), white plays E1 (+2). Therefore, white gains 2, but at the loss of sente.

Many thanks :) (But is my :b2: in the above diagram right or wrong?)

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 Post subject: Re: Basic endgame problem -- feedback requested
Post #36 Posted: Mon Jan 31, 2011 1:54 pm 
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Endgame is definitely an area I urgently need to work on. The original problem overwhelmed me (though I'd like to come back to it from time to time to hone my skills). Anyway, my first thought in this simplified problem turned out wrong when I counted it, but I believe I have solved it.
Click Here To Show Diagram Code
[go]$$W White to play. Japanese rules. 6.5 komi.
$$ ---------------------------
$$ | . . X O . . . O O O O X . |
$$ | X . X O O O O . O . X X . |
$$ | . X O 4 . X . O O O X O . |
$$ | X X X X X . X O X O O X . |
$$ | O O O O X . X . X X X X . |
$$ | . . O X . X . X O X . X . |
$$ | . . O X 1 X . X O X X X . |
$$ | . O O . O X . X O 2 O X . |
$$ | . X O O X X X O O X . X . |
$$ | . O . O O X X . O X X X O |
$$ | . . O . 3 . X O O O O X X |
$$ | . . O O X X X O . O O X . |
$$ | . . O 6 W O X O O . O 5 . |
$$ ---------------------------[/go]

:w7: at :wc:. :b4: and :w5: are miai, and can be played before :w3: if desired.

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 Post subject: Re: Basic endgame problem -- feedback requested
Post #37 Posted: Mon Jan 31, 2011 2:01 pm 
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If 10 kyus are supposed to get these problems, I must be really really bad at endgame... Do you all have a table of values memorized or do you calculate them out each time?

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 Post subject: Re: Basic endgame problem -- feedback requested
Post #38 Posted: Mon Jan 31, 2011 2:10 pm 
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daniel_the_smith wrote:
If 10 kyus are supposed to get these problems, I must be really really bad at endgame

Dusk Eagle wrote:
The original problem overwhelmed me

Dan players starting to look cute again :mrgreen:
Anyway, now that I understood the theory behind the move I formally request that Bill (or anybody else) makes another problem. I would like to see if I could get the next one. :rambo:

And mad props to Bill Spight for the first one :tmbup:

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Post #39 Posted: Mon Jan 31, 2011 2:47 pm 
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daniel_the_smith wrote:
If 10 kyus are supposed to get these problems, I must be really really bad at endgame


I know what you mean...otoh, it seems that some basic assessment and counting could pay off significantly.


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Post #40 Posted: Mon Jan 31, 2011 2:50 pm 
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For the record, I considered myself bad at endgame before this thread. Though I still think Bill said 10k as a practical joke.

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