L19 Go Problem Championship: Round 2

For lessons, as well as threads about specific moves, and anything else worth studying.
Post Reply
Kirby
Honinbo
Posts: 9553
Joined: Wed Feb 24, 2010 6:04 pm
GD Posts: 0
KGS: Kirby
Tygem: 커비라고해
Has thanked: 1583 times
Been thanked: 1707 times

Re: L19 Go Problem Championship: Round 2

Post by Kirby »

@gamesorry
Bingo. +18.
be immersed
Top
User avatar
Shaddy
Lives in sente
Posts: 1206
Joined: Sat Apr 24, 2010 2:44 pm
Rank: KGS 5d
GD Posts: 0
KGS: Str1fe, Midorisuke
Has thanked: 51 times
Been thanked: 192 times

Re: L19 Go Problem Championship: Round 2

Post by Shaddy »

Kirby wrote:@Shaddy:
Not sure I get the causal implication with the "so" in your comment.

The diagrams you provided are correct, and ko is correct for the third problem - but I didn't quite get your comment. With 5@2, where are 3 and 4?
Sorry, I meant 3 @ 2. Then White makes the ko-mouth and Black gives atari.
Top
Kirby
Honinbo
Posts: 9553
Joined: Wed Feb 24, 2010 6:04 pm
GD Posts: 0
KGS: Kirby
Tygem: 커비라고해
Has thanked: 1583 times
Been thanked: 1707 times

Re: L19 Go Problem Championship: Round 2

Post by Kirby »

Shaddy wrote:
Kirby wrote:@Shaddy:
Not sure I get the causal implication with the "so" in your comment.

The diagrams you provided are correct, and ko is correct for the third problem - but I didn't quite get your comment. With 5@2, where are 3 and 4?
Sorry, I meant 3 @ 2. Then White makes the ko-mouth and Black gives atari.
Yeah, that's the sequence I had in mind.
be immersed
Top
Lanrose
Dies in gote
Posts: 26
Joined: Wed Aug 05, 2015 7:46 pm
GD Posts: 0
KGS: Lanrose

Re: L19 Go Problem Championship: Round 2

Post by Lanrose »

So completely forgot I never posted solutions to the last 2 problems
Both possible variations though I think the first has white defending better. Either way white dies.
Click Here To Show Diagram Code
[go]$$B
$$ | . . . . . . . .
$$ | . X X X X . . .
$$ | . X O O O X X .
$$ | 2 O 4 1 3 O X .
$$ | . . . . O 5 . .
$$ ----------------[/go]
Click Here To Show Diagram Code
[go]$$B
$$ | . . . . . . . .
$$ | . X X X X . . .
$$ | . X O O O X X .
$$ | . O 2 1 . O X .
$$ | . . . 3 O . . .
$$ ----------------[/go]
Problem 3

First tried this variation but the throw in means white lives.
Click Here To Show Diagram Code
[go]$$B
$$ | . . . . . . . . . .
$$ | . . . X X X . . . .
$$ | . . X O O O X X . .
$$ | . . X , . . O . X ,
$$ | . . . X O 2 . O X .
$$ | . X . X O 1 . O X .
$$ | . . . . 3 4 . O . .
$$ --------------------[/go]
I didn't think this would work and it didn't
Click Here To Show Diagram Code
[go]$$B
$$ | . . . . . . . . . .
$$ | . . . X X X . . . .
$$ | . . X O O O X X . .
$$ | . . X , 2 . O . X ,
$$ | . . . X O 1 . O X .
$$ | . X . X O . . O X .
$$ | . . . . . . . O . .
$$ --------------------[/go]
And a couple variations later I came to this conclusion.
Click Here To Show Diagram Code
[go]$$B
$$ | . . . . . . . . . .
$$ | . . . X X X . . . .
$$ | . . X O O O X X . .
$$ | . . X , 2 7 O 5 X ,
$$ | . . . X O 4 3 O X .
$$ | . X . X O 6 1 O X .
$$ | . . . . . . . O . .
$$ --------------------[/go]
Top
Kirby
Honinbo
Posts: 9553
Joined: Wed Feb 24, 2010 6:04 pm
GD Posts: 0
KGS: Kirby
Tygem: 커비라고해
Has thanked: 1583 times
Been thanked: 1707 times

Re: L19 Go Problem Championship: Round 2

Post by Kirby »

Lanrose wrote:So completely forgot I never posted solutions to the last 2 problems
Both possible variations though I think the first has white defending better. Either way white dies.
Click Here To Show Diagram Code
[go]$$B
$$ | . . . . . . . .
$$ | . X X X X . . .
$$ | . X O O O X X .
$$ | 2 O 4 1 3 O X .
$$ | . . . . O 5 . .
$$ ----------------[/go]
Click Here To Show Diagram Code
[go]$$B
$$ | . . . . . . . .
$$ | . X X X X . . .
$$ | . X O O O X X .
$$ | . O 2 1 . O X .
$$ | . . . 3 O . . .
$$ ----------------[/go]
Problem 3

First tried this variation but the throw in means white lives.
Click Here To Show Diagram Code
[go]$$B
$$ | . . . . . . . . . .
$$ | . . . X X X . . . .
$$ | . . X O O O X X . .
$$ | . . X , . . O . X ,
$$ | . . . X O 2 . O X .
$$ | . X . X O 1 . O X .
$$ | . . . . 3 4 . O . .
$$ --------------------[/go]
I didn't think this would work and it didn't
Click Here To Show Diagram Code
[go]$$B
$$ | . . . . . . . . . .
$$ | . . . X X X . . . .
$$ | . . X O O O X X . .
$$ | . . X , 2 . O . X ,
$$ | . . . X O 1 . O X .
$$ | . X . X O . . O X .
$$ | . . . . . . . O . .
$$ --------------------[/go]
And a couple variations later I came to this conclusion.
Click Here To Show Diagram Code
[go]$$B
$$ | . . . . . . . . . .
$$ | . . . X X X . . . .
$$ | . . X O O O X X . .
$$ | . . X , 2 7 O 5 X ,
$$ | . . . X O 4 3 O X .
$$ | . X . X O 6 1 O X .
$$ | . . . . . . . O . .
$$ --------------------[/go]
@Lanrose:
Just in time, because I'm about to post the solutions!

You're looking pretty good here, except what about this?
Click Here To Show Diagram Code
[go]$$B
$$ | . . . . . . . .
$$ | . X X X X . . .
$$ | . X O O O X X .
$$ | 4 O 2 1 . O X .
$$ | . . . 3 O . . .
$$ ----------------[/go]
be immersed
Top
Kirby
Honinbo
Posts: 9553
Joined: Wed Feb 24, 2010 6:04 pm
GD Posts: 0
KGS: Kirby
Tygem: 커비라고해
Has thanked: 1583 times
Been thanked: 1707 times

Re: L19 Go Problem Championship: Round 2

Post by Kirby »

Thanks to all who participated in Round 2 of the L19 Go Problem Championship.

Solutions and an updated leaderboard are posted below.

Problem 1


Problem 2


Problem 3


Leaderboard
  1. gamesorry - 36
  2. Schachus - 19
  3. Shaddy - 18
  4. Lanrose - 16
  5. jeromie - 13
  6. dfan - 12
  7. EdLee - 10
be immersed
Top
Post Reply

Return to “Study Group”