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.

You are right, I'm sorry. I actually didn't realize that. I toned it a little. It's just that I'm used to more respectable behaviour from go players where I play.

Cheers.

Those were nice problems, but I can't recommend this method of dispute resolution-- truth is not handed out prior to the debate in proportion to go skill...

_________________
That which can be destroyed by the truth should be.
--
My (sadly neglected, but not forgotten) project: http://dailyjoseki.com

I admit not playing on IGS because of the time limits. I can't seem to find a way to get a "decent" one (KGS style). Concerning Tygem, I heard many good things about it. However, I'm unable to get my hand on a mac friendly version. As far as I know, it's only for PC, which is sad

Josh, these tsumegos are very nice indeed!

Problem 1: At a glance - 2k
First impression: Seems like O19's the answer...
Final answer: O19 works indeed
Time: less than 30 seconds

Problem 2: 1 minute - 2k
First impression: P19?
Final answer: P19
Time: less than 30 seconds

Problem 3: 3 minutes - 2k
First impression: ???
Final answer: I really don't get this one... Is it white to live or black to kill? lol... Guess that this one is a bad sign... I'll look at it after eating.

This reminds me of ccatalyst and many others from godiscussions. It's great to see how circular these forums end up getting.

Black to kill. It's not that hard, but I won't say my answer (to avoid spoiling the fun/showing how I messed)

_________________
Geek of all trades, master of none: the motto for my blog mostlymaths.net

Is this a japanese book? The problems seem little bit easy for 2k. There might be problem with ranks in different countries - http://senseis.xmp.net/?RankWorldwideComparison

I can't help but wonder how many of those rapid-shodanners considered it unacceptable to take handicaps against 2-dans. Arrogance is one thing, but a strong drive to make every move better than the one before manifests the same way, and is probably an essential trait for someone intending to quickly move up through the ranks.

I'm 2k KGS (actually borderline 1k now) and the last one probably took me around 2 minutes, although I wasn't timing or anything. The first two were more at-a-glance, I actually think prob. 2 is easier than prob. 1.

My solution:

Just a random point: giving 3 stones and winning by 30 points or so sounds about right for 2d vs. 7k (give or take 3 stones on both sides :p). I'm not sure why that's unbelievable - dans (and stronger sdks) will start turtling usually once they are solidly ahead.

Yeah, it is a Japanese book. It's from the Nihon Kiin Dan level series, it's the first life and death book. I posted the title in Japanese underneath the problems. I don't know how accurate that table really is though.

Here's a couple problems from Maeda Tsumego (book 2 前田中級詰碁) to balance it out. These are rated for 1-3k but they're Japanese ranks from the 60's, no times are given.

Click Here To Show Diagram Code

[go]$$
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . O X . O X . . . . . . . . . . . . . |
$$ | . O . O O X . . . . . . . . . . . . . |
$$ | O X O O . X . . . , . . . . . , . . . |
$$ | . X X X X . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . O . O O O O . |
$$ | . . . , . . . . . , . . . . . X X O . |
$$ | . . . . . . . . . . . O O . . . X O X |
$$ | . . . . . . . . . . . O X . . O X X . |
$$ | . . . . . . . . . . . O . . . . X . . |
$$ ---------------------------------------[/go]

Both of these are black to play as well.

Oh! Now I see. O19 has just jumped to my face. Nice interesting one. Took me about 1 minute trying to find how to get a kill white from the inside and (finally) seeing a nice outside kill.

To be fair, Layleth's got a 75% win rate as a 7 kyu with 30 some odd games this month. So I'd say at least 5 kyu is probable, just on statistical evidence. Possibly a stone or two stronger.

I applaud your progress. It took me a good 9 months to get to that point, and I consider my learning rate well above average. But maybe having some strong dan players to destroy you teach you has been helpful. Or maybe you're just naturally talented.

How many of the games are at reasonable time levels? I'm curious as blitz is definitely different from 25+ min main time. Reading is really fundamental to playing strength, and building my reading strength has been a slow and painful process involving literally thousands of go problems over the last two years. I'd argue that blitz games are more about fundamental shape and tesujis than actually verifying stone-by-stone if something works or not, and so I'd guess that it's probably possible to progress faster playing blitz games than slow games. Not that I'm undercutting your achievement either way.

_________________
1k KGS

The bottom one seems considerably more tricky than the top.

Honestly with three stones less than necessary the stronger player doesn't even have to try.

In that situation, the stronger player can:

A) Not try and still win.
B) Try to win by X points.
C) Play "kill everything".

I've come to the conclusion that not trying is not the way to improvement. So that leaves B and C. B is hard. C is fun.

_________________
That which can be destroyed by the truth should be.
--
My (sadly neglected, but not forgotten) project: http://dailyjoseki.com

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.

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.

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.

Nice problem. makes ko. Will look at it more deeply tomorrow. No, wait... not a ko...

These are 2k problems? Seems a lot easier than that.