White to start and make a seki.
Interactive puzzle
White to begin.
Interactive puzzle
Black to move.
1 Like
White can live with B15… I got stumped on this variation. Ko always depends on threats but white has a bigger group so it’s something that black can play.
2 Likes
The White stones look vulnerable, but White can live. White to move.
Interactive Puzzle
Black to start and capture five White stones and bringing his own three stones back to life.
Interactive Puzzle
White to play and live.
Interactive Puzzle
2 Likes
My first thought was: “if white just simply captures, how could black kill? How could black prevent that white makes an eye in the corner?”
It took me a while to see how. 
1 Like
Black to play. Mission: capture White group.
Interactive Puzzle
Black to play and live.
In this puzzle collection you play both Black and White!
Interactive Puzzle
Black to play and kill White.
Interactive Puzzle
2 Likes
Surprise. Yesterday radio silence. No response, no discussions, no likes.
Assuming that you are still there, here are three new problems.
Of course you will have to solve yesterday’s puzzles first, before you can start today’s puzzles 
Black to move. Black to live.
Interactive Puzzle
Can White live in the corner?
Interactive Puzzle
White kills Black.
Interactive Puzzle
2 Likes
Neat, I just had a variation of that 2nd problem today: https://www.101weiqi.com/q/57717/
Hard problem when one of the variation is 3d level.
1 Like
I find it incredible hard to rate a problem. I give it a rating and hope I am not too optimistic (or pessimistic). But I wouldn’t be surprised if I was way off many times. 
Unfortunately this is the best I can do.
1 Like
I wanted to argue with Cho Chikun but wasn’t brave enough. 
2 Likes
yesterday's problem
I disagree with B18 as first move.
White can respond B19 and black dies.
Forcing move for black is B19.
White can’t play B18 because black A18 captures three stones and lives.
So white connects at C19, black atari B18, white connects E19.
Now black wouldn’t play A16.
Miai is cool, but connecting suddenly C14 black is alive and makes more points.
You can discuss it with the …
Two puzzles with the same theme.
Black to move. Can White live in the corner?
Interactive
Interactive
1 Like
Two not too difficult puzzle (I think) in the busy days before Christmas.
Hope you are not locked down, and if you are, have fun just the same.
White to move.
Interactive
White to begin. Throw in and win.
Interactive
1 Like
I'd like to know...
The difference between throwing in at S1 and S2
none at all?
1 Like
Black to start and live.
Two puzzles from Honinbo Shusai.
Here is a bio of Honinbo Shusai.
Black to start.
Black to start.
1 Like
Let’s start with an easy one.
White begins and lives.
Another not so difficult but oh so useful one.
Black to move and kill.
Okay, warming up is over. Game on! This is a tough one.
Black to move.
Hope you enjoyed these puzzles.
See you tomorrow.
1 Like
Too early posted, you will have to wait a little longer 
1 Like
I already did one! 
1 Like
Okay @Lys here they are 
Black to move.
Black to move.
Black to move.
And as an extra: an endgame puzzle by Clossius.
Black to move and find the optimal sequence: first the biggest move, then smaller and smaller.
3 Likes