Trying to become pro

Create a study plan, track your progress and hold yourself accountable.
Post Reply
speedchase
Lives in sente
Posts: 800
Joined: Sun Dec 04, 2011 4:36 pm
Rank: AGA 2kyu
GD Posts: 0
Universal go server handle: speedchase
Has thanked: 139 times
Been thanked: 122 times

Re: Trying to become pro

Post by speedchase »

I have to say that the tsumego are significantly easier than described. the first I got in under 30 seconds, the second in under a minute, although the third I could not solve without looking at the solution. I think my reading is truthfully slightly above par for an 8kyu, but that being said I still believe they are easier than stated.
User avatar
tchan001
Gosei
Posts: 1582
Joined: Wed Apr 21, 2010 6:44 pm
GD Posts: 1292
Location: Hong Kong
Has thanked: 54 times
Been thanked: 534 times
Contact:

Re: Trying to become pro

Post by tchan001 »

If you want to try a really interesting tsumego, this is one of my favorites. Very well constructed and quite difficult.
http://tchan001.wordpress.com
A blog on Asian go books, go sightings, and interesting tidbits
Go is such a beautiful game.
Josh Hatch
Dies in gote
Posts: 68
Joined: Wed Oct 26, 2011 7:11 pm
GD Posts: 0
Been thanked: 6 times

Re: Trying to become pro

Post by Josh Hatch »

speedchase wrote:I have to say that the tsumego are significantly easier than described. the first I got in under 30 seconds, the second in under a minute, although the third I could not solve without looking at the solution. I think my reading is truthfully slightly above par for an 8kyu, but that being said I still believe they are easier than stated.

They probably are. I don't know how they came up with the ranks for the problems, they're also based on Japanese ranks so there could be some discrepency there.

Here's another problem. I'm not sure how difficult this one is supposed to be, this book doesn't give ratings for the problems. I did this one yesterday though and got it right, I only got 1 out of 3 problems in this section of the book right.
Click Here To Show Diagram Code
[go]$$c black to play
$$ . . . . . . . . . |
$$ . . . . . . . . . |
$$ . . . . . . . O . |
$$ . . . . . . O . . |
$$ . . . . . . . X X |
$$ . . . O O O O O X |
$$ . . . O X . X X O |
$$ . O . O X . . . . |
$$ . . . X . . . . . |
$$ -------------------[/go]

I'm going to stop posting problems in this thread after this as it's not the purpose of the thread. We can do more tsumego in the Study Group forum though if anyone wants to.

@Tchan- I've seen other problems that use the same tesuji as your problem before but it took me a while to find it the first time.
Leyleth
Dies in gote
Posts: 66
Joined: Tue Nov 22, 2011 8:00 am
Rank: KGS 3k
GD Posts: 0
KGS: Schnapps
Has thanked: 1 time
Been thanked: 6 times

Re: Trying to become pro

Post by Leyleth »

tchan001 wrote:If you want to try a really interesting tsumego, this is one of my favorites. Very well constructed and quite difficult.


Nice problem.
13-19
makes ko. Will look at it more deeply tomorrow. No, wait... not a ko...
lovely
Dies with sente
Posts: 121
Joined: Fri Apr 29, 2011 8:39 pm
GD Posts: 109
KGS: lovely
Tygem: imsohot
Location: Lyndhurst, New Jersey
Has thanked: 44 times
Been thanked: 10 times

Re: Trying to become pro

Post by lovely »

Josh Hatch wrote:Why don't you two play a game and settle your argument that way?

Also Leyleth, here's a few problems that are rated for 2k since you say play a 2d at 3 stones at your club:
Click Here To Show Diagram Code
[go]$$c At a glance - 2k
$$ -------------------
$$ . . . . X X X O . |
$$ . X X O O O O X X |
$$ . . . . O . O O X |
$$ . . X . O O X X . |
$$ . . . X X X . . . |
$$ . . . . . . X . . |
$$ . . . . . . . . . |
$$ . . . . . . . . . |
$$ . . . . . . . . . |[/go]

Click Here To Show Diagram Code
[go]$$c 1 minute - 2k
$$ -------------------
$$ . . O . . . O . . |
$$ . O X . X . X O . |
$$ . O X . X . X O . |
$$ . O O X X X O . . |
$$ . . . O O O O . . |
$$ . . . . . . . . . |
$$ . . . . . . . . . |
$$ . . . . . . . . . |
$$ . . . . . . . . . |[/go]

Click Here To Show Diagram Code
[go]$$c 3 minutes - 2k
$$ -------------------
$$ . . . . . O . O . |
$$ . . X X O . X X X |
$$ . . X O O O O O O |
$$ . . X X X X X X . |
$$ . . . . . . . . . |
$$ . . . . . . . . . |
$$ . . . . . . . . . |
$$ . . . . . . . . . |
$$ . . . . . . . . . |[/go]

All three problems are black to play and from 初段合格の死活150題.


These are 2k problems? Seems a lot easier than that.
User avatar
SoDesuNe
Gosei
Posts: 1810
Joined: Wed Apr 21, 2010 1:57 am
Rank: KGS 1-dan
GD Posts: 0
Has thanked: 490 times
Been thanked: 365 times

Re: Trying to become pro

Post by SoDesuNe »

tchan001 wrote:If you want to try a really interesting tsumego, this is one of my favorites. Very well constructed and quite difficult.


I really want it to work that way : D
Click Here To Show Diagram Code
[go]$$Wc
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . X X X X . |
$$ | . . . . . . . . . . . . O X O X O X . |
$$ | . . . . . O X . X X X . O X O X O O a |
$$ | . . . O . O X . . , . . O . O O X X e |
$$ | . . . . . O . . . . . X O . O X O d 1 |
$$ | . . . . . . . . . . . X O . O X . . . |
$$ | . . . . . . . . . . . X O . O X . b . |
$$ | . . . . . . . . . . . . X . O X c . . |
$$ | . . . . . . . . . . . . X . O O X . . |
$$ | . . . , . . . . . , . . . . . O X X . |
$$ | . . . . . . . . . . . . X . X O O . . |
$$ | . . . . . . . . . . . . . . . X O O . |
$$ | . . . . . . . . . . . . . . . X X O . |
$$ | . . . . . . . . . . . . . . . . . X . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


Click Here To Show Diagram Code
[go]$$Wc Variation 'a' should capture. Black can't play at :b9: himself because after Black :w8: he can't give Atari at T14 and when Black starts a capturing race with S11 he loses by one move.
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . X X X X . |
$$ | . . . . . . . . . . . . O X O X O X . |
$$ | . . . . . O X . X X X . O X O X O O 2 |
$$ | . . . O . O X . . , . . O . O O X X . |
$$ | . . . . . O . . . . . X O . O X O 8 1 |
$$ | . . . . . . . . . . . X O . O X . 9 . |
$$ | . . . . . . . . . . . X O . O X 4 6 7 |
$$ | . . . . . . . . . . . . X . O X 3 5 . |
$$ | . . . . . . . . . . . . X . O O X . . |
$$ | . . . , . . . . . , . . . . . O X X . |
$$ | . . . . . . . . . . . . X . X O O . . |
$$ | . . . . . . . . . . . . . . . X O O . |
$$ | . . . . . . . . . . . . . . . X X O . |
$$ | . . . . . . . . . . . . . . . . . X . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


Click Here To Show Diagram Code
[go]$$Wc Variation 'b' or 'c': Black loses the two stones (second eye for White).
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . X X X X . |
$$ | . . . . . . . . . . . . O X O X O X . |
$$ | . . . . . O X . X X X . O X O X O O 3 |
$$ | . . . O . O X . . , . . O 5 O O X X . |
$$ | . . . . . O . . . . . X O . O X O 4 1 |
$$ | . . . . . . . . . . . X O . O X . . . |
$$ | . . . . . . . . . . . X O . O X . 2 . |
$$ | . . . . . . . . . . . . X . O X . . . |
$$ | . . . . . . . . . . . . X . O O X . . |
$$ | . . . , . . . . . , . . . . . O X X . |
$$ | . . . . . . . . . . . . X . X O O . . |
$$ | . . . . . . . . . . . . . . . X O O . |
$$ | . . . . . . . . . . . . . . . X X O . |
$$ | . . . . . . . . . . . . . . . . . X . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


Click Here To Show Diagram Code
[go]$$Wc Variation 'd': White captures those two stones as well. DOES NOT WORK: Black play :b4: at :w5: !
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . X X X X . |
$$ | . . . . . . . . . . . . O X O X O X . |
$$ | . . . . . O X . X X X . O X O X O O 3 |
$$ | . . . O . O X . . , . . O 7 O O X X . |
$$ | . . . . . O . . . . . X O . O X O 2 1 |
$$ | . . . . . . . . . . . X O . O X 4 5 . |
$$ | . . . . . . . . . . . X O . O X . 6 . |
$$ | . . . . . . . . . . . . X . O X . . . |
$$ | . . . . . . . . . . . . X . O O X . . |
$$ | . . . , . . . . . , . . . . . O X X . |
$$ | . . . . . . . . . . . . X . X O O . . |
$$ | . . . . . . . . . . . . . . . X O O . |
$$ | . . . . . . . . . . . . . . . X X O . |
$$ | . . . . . . . . . . . . . . . . . X . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


EDIT:
Click Here To Show Diagram Code
[go]$$Wc Variation 'd'1: I hope with :w7: White catches the three Black stones. Need to go now ^^ Will check later!
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . X X X X . |
$$ | . . . . . . . . . . . . O X O X O X . |
$$ | . . . . . O X . X X X . O X O X O O 4 |
$$ | . . . O . O X . . , . . O . O O X X . |
$$ | . . . . . O . . . . . X O . O X W 2 1 |
$$ | . . . . . . . . . . . X O . O X 6 3 . |
$$ | . . . . . . . . . . . X O . O X . . . |
$$ | . . . . . . . . . . . . X . O X 5 7 . |
$$ | . . . . . . . . . . . . X . O O X . . |
$$ | . . . , . . . . . , . . . . . O X X . |
$$ | . . . . . . . . . . . . X . X O O . . |
$$ | . . . . . . . . . . . . . . . X O O . |
$$ | . . . . . . . . . . . . . . . X X O . |
$$ | . . . . . . . . . . . . . . . . . X . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


Click Here To Show Diagram Code
[go]$$Wc Variation 'e': White captures those stones as well.
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . X X X X . |
$$ | . . . . . . . . . . . . O X O X O X . |
$$ | . . . . . O X . X X X . O X O X O O 4 |
$$ | . . . O . O X . . , . . O . O O X X 2 |
$$ | . . . . . O . . . . . X O . O X O 3 1 |
$$ | . . . . . . . . . . . X O . O X . . . |
$$ | . . . . . . . . . . . X O . O X 6 8 9 |
$$ | . . . . . . . . . . . . X . O X 5 7 . |
$$ | . . . . . . . . . . . . X . O O X . . |
$$ | . . . , . . . . . , . . . . . O X X . |
$$ | . . . . . . . . . . . . X . X O O . . |
$$ | . . . . . . . . . . . . . . . X O O . |
$$ | . . . . . . . . . . . . . . . X X O . |
$$ | . . . . . . . . . . . . . . . . . X . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


Click Here To Show Diagram Code
[go]$$c black to play
$$ . . . . . . . . . |
$$ . . . . . . . . . |
$$ . . . . . . . O . |
$$ . . . . . . O . . |
$$ . . . . . . . X X |
$$ . . . O O O O O X |
$$ . . . O X . X X O |
$$ . O . O X . . . . |
$$ . . . X . . . . . |
$$ -------------------[/go]


Click Here To Show Diagram Code
[go]$$c black to play
$$ . . . . . . . . . |
$$ . . . . . . . . . |
$$ . . . . . . . O . |
$$ . . . . . . O . . |
$$ . . . . . . . X X |
$$ . . . O O O O O X |
$$ . . . O X . X X O |
$$ . O . O X . . . . |
$$ . . . X . . 1 . . |
$$ -------------------[/go]


I hope this move works, I'm really bad with such corner positions : /
User avatar
tchan001
Gosei
Posts: 1582
Joined: Wed Apr 21, 2010 6:44 pm
GD Posts: 1292
Location: Hong Kong
Has thanked: 54 times
Been thanked: 534 times
Contact:

Re: Trying to become pro

Post by tchan001 »

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

How would you answer this reply?
http://tchan001.wordpress.com
A blog on Asian go books, go sightings, and interesting tidbits
Go is such a beautiful game.
User avatar
SoDesuNe
Gosei
Posts: 1810
Joined: Wed Apr 21, 2010 1:57 am
Rank: KGS 1-dan
GD Posts: 0
Has thanked: 490 times
Been thanked: 365 times

Re: Trying to become pro

Post by SoDesuNe »

tchan001 wrote:
Click Here To Show Diagram Code
[go]$$Wc
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . X X X X . |
$$ | . . . . . . . . . . . . O X O X O X . |
$$ | . . . . . O X . X X X . O X O X O O . |
$$ | . . . O . O X . . , . . O . O O X X . |
$$ | . . . . . O . . . . . X O . O X O . 1 |
$$ | . . . . . . . . . . . X O . O X . 2 . |
$$ | . . . . . . . . . . . X O . O X . . . |
$$ | . . . . . . . . . . . . X . O X . . . |
$$ | . . . . . . . . . . . . X . O O X . . |
$$ | . . . , . . . . . , . . . . . O X X . |
$$ | . . . . . . . . . . . . X . X O O . . |
$$ | . . . . . . . . . . . . . . . X O O . |
$$ | . . . . . . . . . . . . . . . X X O . |
$$ | . . . . . . . . . . . . . . . . . X . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]

How would you answer this reply?


Tricky, tricky! Here I looked at five different responses and missed the most difficult one ^^
Click Here To Show Diagram Code
[go]$$Wc
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . X X X X . |
$$ | . . . . . . . . . . . . O X O X O X . |
$$ | . . . . . O X . X X X . O X O X O O 4 |
$$ | . . . O . O X . . , . . O . O O X X . |
$$ | . . . . . O . . . . . X O . O X O 3 1 |
$$ | . . . . . . . . . . . X O . O X . 2 . |
$$ | . . . . . . . . . . . X O . O X . 5 . |
$$ | . . . . . . . . . . . . X . O X a . . |
$$ | . . . . . . . . . . . . X . O O X . . |
$$ | . . . , . . . . . , . . . . . O X X . |
$$ | . . . . . . . . . . . . X . X O O . . |
$$ | . . . . . . . . . . . . . . . X O O . |
$$ | . . . . . . . . . . . . . . . X X O . |
$$ | . . . . . . . . . . . . . . . . . X . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


I'd say it has to go like this and now Black has to defend the cut at 'a', otherwise White can capture those three stones again.

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


Forced?

Click Here To Show Diagram Code
[go]$$Bc
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . X X X X . |
$$ | . . . . . . . . . . . . O X O X . X . |
$$ | . . . . . O X . X X X . O X O X . . X |
$$ | . . . O . O X . . , . . O . O O X X . |
$$ | . . . . . O . . . . . X O . O X O O O |
$$ | . . . . . . . . . . . X O . O X O X 4 |
$$ | . . . . . . . . . . . X O . O X 3 O 5 |
$$ | . . . . . . . . . . . . X . O X X X 1 |
$$ | . . . . . . . . . . . . X . O O X . O |
$$ | . . . , . . . . . , . . . . . O X X 2 |
$$ | . . . . . . . . . . . . X . X O O 6 . |
$$ | . . . . . . . . . . . . . . . X O O . |
$$ | . . . . . . . . . . . . . . . X X O . |
$$ | . . . . . . . . . . . . . . . . . X . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


For White unfavourable M-m-m-monster Ko? Or just wrong first move? =D



post scriptum:
Ko is not that unfavourable because White has bunch of local Ko threats.
User avatar
tchan001
Gosei
Posts: 1582
Joined: Wed Apr 21, 2010 6:44 pm
GD Posts: 1292
Location: Hong Kong
Has thanked: 54 times
Been thanked: 534 times
Contact:

Re: Trying to become pro

Post by tchan001 »

SoDesuNe, look inside
Click Here To Show Diagram Code
[go]$$Wc
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . X X X X . |
$$ | . . . . . . . . . . . . O X O X O X . |
$$ | . . . . . O X . X X X . O X O X O O . |
$$ | . . . O . O X . . , . . O . O O X X . |
$$ | . . . . . O . . . . . X O . O X O . 1 |
$$ | . . . . . . . . . . . X O . O X 2 . . |
$$ | . . . . . . . . . . . X O . O X . . . |
$$ | . . . . . . . . . . . . X . O X . . . |
$$ | . . . . . . . . . . . . X . O O X . . |
$$ | . . . , . . . . . , . . . . . O X X . |
$$ | . . . . . . . . . . . . X . X O O . . |
$$ | . . . . . . . . . . . . . . . X O O . |
$$ | . . . . . . . . . . . . . . . X X O . |
$$ | . . . . . . . . . . . . . . . . . X . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]

How about this?


Maybe Josh would care to share his findings with us
Josh Hatch wrote:@Tchan- I've seen other problems that use the same tesuji as your problem before but it took me a while to find it the first time.
http://tchan001.wordpress.com
A blog on Asian go books, go sightings, and interesting tidbits
Go is such a beautiful game.
User avatar
SoDesuNe
Gosei
Posts: 1810
Joined: Wed Apr 21, 2010 1:57 am
Rank: KGS 1-dan
GD Posts: 0
Has thanked: 490 times
Been thanked: 365 times

Re: Trying to become pro

Post by SoDesuNe »

tchan001 wrote:
Click Here To Show Diagram Code
[go]$$Wc
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . X X X X . |
$$ | . . . . . . . . . . . . O X O X O X . |
$$ | . . . . . O X . X X X . O X O X O O . |
$$ | . . . O . O X . . , . . O . O O X X . |
$$ | . . . . . O . . . . . X O . O X O . 1 |
$$ | . . . . . . . . . . . X O . O X 2 . . |
$$ | . . . . . . . . . . . X O . O X . . . |
$$ | . . . . . . . . . . . . X . O X . . . |
$$ | . . . . . . . . . . . . X . O O X . . |
$$ | . . . , . . . . . , . . . . . O X X . |
$$ | . . . . . . . . . . . . X . X O O . . |
$$ | . . . . . . . . . . . . . . . X O O . |
$$ | . . . . . . . . . . . . . . . X X O . |
$$ | . . . . . . . . . . . . . . . . . X . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]

How about this?


I just found several mistakes in my earlier tries, so I guess my move does not work.
User avatar
SoDesuNe
Gosei
Posts: 1810
Joined: Wed Apr 21, 2010 1:57 am
Rank: KGS 1-dan
GD Posts: 0
Has thanked: 490 times
Been thanked: 365 times

Re: Trying to become pro

Post by SoDesuNe »

Okay, new try =) Forcing moves first!

But it's still just a Ko.

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


:w1: and :w3: seem to be totally forcing, Black can only answer with :b2: and :b4: .

Click Here To Show Diagram Code
[go]$$Wc
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . X X X X . |
$$ | . . . . . . . . . . . . O X O X O X . |
$$ | . . . . . O X . X X X . O X O X O O a |
$$ | . . . O . O X . . , . . O . O O X X . |
$$ | . . . . . O . . . . . X O . O X O . 1 |
$$ | . . . . . . . . . . . X O . O X . . . |
$$ | . . . . . . . . . . . X O . O X X X b |
$$ | . . . . . . . . . . . . X . O X O O . |
$$ | . . . . . . . . . . . . X . O O X . . |
$$ | . . . , . . . . . , . . . . . O X X . |
$$ | . . . . . . . . . . . . X . X O O . . |
$$ | . . . . . . . . . . . . . . . X O O . |
$$ | . . . . . . . . . . . . . . . X X O . |
$$ | . . . . . . . . . . . . . . . . . X . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


And now we smash :w1: on the board, threatening 'a' and 'b'!

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


I think this is the strongest response Black has. But White has too many local threats for the size of the Ko, it seems.
Any other move by Black lets White live unconditionally, I think.
User avatar
tchan001
Gosei
Posts: 1582
Joined: Wed Apr 21, 2010 6:44 pm
GD Posts: 1292
Location: Hong Kong
Has thanked: 54 times
Been thanked: 534 times
Contact:

Re: Trying to become pro

Post by tchan001 »

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

Maybe something like this?
http://tchan001.wordpress.com
A blog on Asian go books, go sightings, and interesting tidbits
Go is such a beautiful game.
User avatar
SoDesuNe
Gosei
Posts: 1810
Joined: Wed Apr 21, 2010 1:57 am
Rank: KGS 1-dan
GD Posts: 0
Has thanked: 490 times
Been thanked: 365 times

Re: Trying to become pro

Post by SoDesuNe »

tchan001 wrote:
Click Here To Show Diagram Code
[go]$$Wc
$$ ---------------------------------------
$$ | . . . . . . . . . . . . 6 . X X X X . |
$$ | . . . . . . . . . . . . O X O X O X . |
$$ | . . . . . O X . X X X . O X O X O O 3 |
$$ | . . . O . O X . . , . . O 5 O O X X . |
$$ | . . . . . O . . . . . X O . O X O 4 1 |
$$ | . . . . . . . . . . . X O . O X . . . |
$$ | . . . . . . . . . . . X O . O X X X 2 |
$$ | . . . . . . . . . . . . X . O X O O . |
$$ | . . . . . . . . . . . . X . O O X . . |
$$ | . . . , . . . . . , . . . . . O X X . |
$$ | . . . . . . . . . . . . X . X O O . . |
$$ | . . . . . . . . . . . . . . . X O O . |
$$ | . . . . . . . . . . . . . . . X X O . |
$$ | . . . . . . . . . . . . . . . . . X . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]

Maybe something like this?


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


Now Black can't connect, so White has still his second eye, I think.
Josh Hatch
Dies in gote
Posts: 68
Joined: Wed Oct 26, 2011 7:11 pm
GD Posts: 0
Been thanked: 6 times

Re: Trying to become pro

Post by Josh Hatch »

SoDesuNe wrote:Okay, new try =) Forcing moves first!

But it's still just a Ko.

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


:w1: and :w3: seem to be totally forcing, Black can only answer with :b2: and :b4: .

Click Here To Show Diagram Code
[go]$$Wc
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . X X X X . |
$$ | . . . . . . . . . . . . O X O X O X . |
$$ | . . . . . O X . X X X . O X O X O O a |
$$ | . . . O . O X . . , . . O . O O X X . |
$$ | . . . . . O . . . . . X O . O X O . 1 |
$$ | . . . . . . . . . . . X O . O X . . . |
$$ | . . . . . . . . . . . X O . O X X X b |
$$ | . . . . . . . . . . . . X . O X O O . |
$$ | . . . . . . . . . . . . X . O O X . . |
$$ | . . . , . . . . . , . . . . . O X X . |
$$ | . . . . . . . . . . . . X . X O O . . |
$$ | . . . . . . . . . . . . . . . X O O . |
$$ | . . . . . . . . . . . . . . . X X O . |
$$ | . . . . . . . . . . . . . . . . . X . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


And now we smash :w1: on the board, threatening 'a' and 'b'!

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


I think this is the strongest response Black has. But White has too many local threats for the size of the Ko, it seems.
Any other move by Black lets White live unconditionally, I think.

That was the solution I had.

There's a similar problem in the Lee Changho Life and Death series, problem 17 in book 5. It's a few moves further along than the problem Tchan posted.
Click Here To Show Diagram Code
[go]$$c Rotated to match Tchan's problem
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . . . . . . . . . . X . O X X X . |
$$ | . . . . . . . . . . . . . . O X O O . |
$$ | . . . , . . . . . , . . X . O O X X . |
$$ | . . . . . . . . . . . . . . O X O . . |
$$ | . . . . . . . . . . . . X . O X . . . |
$$ | . . . . . . . . . . . . . . O X X X . |
$$ | . . . . . . . . . . . . X . O X O O . |
$$ | . . . . . . . . . . . . . . O O X . . |
$$ | . . . , . . . . . , . . X . O X X X . |
$$ | . . . . . . . . . . . . . X X O . . . |
$$ | . . . . . . . . . . . . . . . O . O . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


tchan001 wrote:
Click Here To Show Diagram Code
[go]$$Wc
$$ ---------------------------------------
$$ | . . . . . . . . . . . . 6 . X X X X . |
$$ | . . . . . . . . . . . . O X O X O X . |
$$ | . . . . . O X . X X X . O X O X O O 3 |
$$ | . . . O . O X . . , . . O 5 O O X X . |
$$ | . . . . . O . . . . . X O . O X O 4 1 |
$$ | . . . . . . . . . . . X O . O X . . . |
$$ | . . . . . . . . . . . X O . O X X X 2 |
$$ | . . . . . . . . . . . . X . O X O O . |
$$ | . . . . . . . . . . . . X . O O X . . |
$$ | . . . , . . . . . , . . . . . O X X . |
$$ | . . . . . . . . . . . . X . X O O . . |
$$ | . . . . . . . . . . . . . . . X O O . |
$$ | . . . . . . . . . . . . . . . X X O . |
$$ | . . . . . . . . . . . . . . . . . X . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]

Maybe something like this?

White can play m19 next and will be able to live.
User avatar
RBerenguel
Gosei
Posts: 1585
Joined: Fri Nov 18, 2011 11:44 am
Rank: KGS 5k
GD Posts: 0
KGS: RBerenguel
Tygem: rberenguel
Wbaduk: JohnKeats
Kaya handle: RBerenguel
Online playing schedule: KGS on Saturday I use to be online, but I can be if needed from 20-23 GMT+1
Location: Barcelona, Spain (GMT+1)
Has thanked: 576 times
Been thanked: 298 times
Contact:

Re: Trying to become pro

Post by RBerenguel »

I'm happy I got the first 2 moves and the idea almost right then (I didn't post any answer, but was checking ;) )
Geek of all trades, master of none: the motto for my blog mostlymaths.net
Post Reply