Go problems, typically about life and death situations.

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9
votes
4answers
2k views

Is there a site to solve tsumego online?

I'd like to solve tsumego online, not having to install a program or app locally. Are there any sites that allow this? How about for smartphones?
6
votes
2answers
137 views

Tsumego only solvable under NZ rules?

The most significant difference between the New Zealand rules and the other rules for Go is that suicide is not forbidden. In most cases, the only time this can come in handy is that you can suicide ...
6
votes
1answer
259 views

Is this corner dead?

Played a game on KGS. We are both 4K. He was good at life and death, and I am rusty. Was B1 sente? $$ ------------| $$ . X O 2 1 . | $$ X . X O . . | $$ . . X O . . | $$ . . X O O . | $$ . . X X ...
5
votes
3answers
313 views

A reference of practical tsumego?

There are insanely many tsumego in existence, but many of them are very artificial and would never occur in real games. While any tsumego helps to improve, specifically learning shapes likely to be ...
3
votes
1answer
244 views

Why is this the solution?

I'm a very weak go player, playing very occasionally. I however enjoy easy tsumego problems on the train on my phone, as I find it more fun than, say, crosswords or sudoku. However, the app I use ...
2
votes
1answer
168 views

life and death: 2 x 4 in the corner with defects

In a go game (with another 4K) I got a 2 x 4 region in the corner with lots of defects. W1 almost surely will happen. Can White get life or ko? $$Wm1 $$ |------------ $$ | . . . . X . $$ | . . O ...
1
vote
1answer
37 views

Tsumego intermediate problem 11 - possible without winning ko two times?

This tsumego (intermediate problem 11) gave me hard time: I actually only found a solution where black must win the ko two times, which is nasty. Is there a better solution? It actually looks like ...
0
votes
2answers
61 views

Tsumego elementary problem 157

I tried to solve this tsumego, black is on the move: it seems to me that white can kill black only if he wins the ko two times. Is that correct? After first ko win he will connect at 1-3 and after ...
0
votes
1answer
45 views

Tsumego problem 899

I am not able to solve this tsumego problem 899 of the elementary set. Black is to move and perhaps to kill white. But it seems to me that regardless of what black does, white will always make one eye ...