[go]$$Bc $$ --------------- $$ | . . . O X . . $$ | . O . O X . . $$ | . . O X X . . $$ | O O X , . . . $$ | X X X . . . . $$ | . . . . . . .[/go]
Problem 2 (6 points)
$$Bc $$ --------------------- $$ . . . . X X . O X . . . | $$ . . X O X O . O X . . . | $$ . . X X O . . O O X X . | $$ . . , . O O O . X . . . | $$ . . . X X X X X . X . . | $$ . . . . . . . . . . . . |
[go]$$Bc $$ --------------------- $$ . . . . X X . O X . . . | $$ . . X O X O . O X . . . | $$ . . X X O . . O O X X . | $$ . . , . O O O . X . . . | $$ . . . X X X X X . X . . | $$ . . . . . . . . . . . . |[/go]
Problem 3 (9 points)
$$Bc $$ ---------------------- $$ . . . . . . . . . . . | $$ . X X O . . . . O X . | $$ . . X . O . . O . X . | $$ . , X . O . . O . X . | $$ . . . X X . O . X . . | $$ . . . . . X X X . . . | $$ . . . . . . . . . . . |
[go]$$Bc $$ ---------------------- $$ . . . . . . . . . . . | $$ . X X O . . . . O X . | $$ . . X . O . . O . X . | $$ . , X . O . . O . X . | $$ . . . X X . O . X . . | $$ . . . . . X X X . . . | $$ . . . . . . . . . . . |[/go]
Have fun!
Posted: Mon Jun 26, 2017 9:05 pm
by EdLee
Symmetrical shape.
$$B Bent 4. Locally, W dead $$ --------------- $$ | . 1 . O X . . $$ | 3 O 2 O X . . $$ | . 4 O X X . . $$ | O O X , . . . $$ | X X X . . . . $$ | . . . . . . .
[go]$$B Bent 4. Locally, W dead $$ --------------- $$ | . 1 . O X . . $$ | 3 O 2 O X . . $$ | . 4 O X X . . $$ | O O X , . . . $$ | X X X . . . . $$ | . . . . . . .[/go]
If all ko threats removed...
$$Bm5 tenuki/pass $$ --------------- $$ | 1 X 4 O X . . $$ | X O O O X . . $$ | 3 O O X X . . $$ | O O X , . . . $$ | X X X . . . . $$ | . . . . . . .
[go]$$Bm5 tenuki/pass $$ --------------- $$ | 1 X 4 O X . . $$ | X O O O X . . $$ | 3 O O X X . . $$ | O O X , . . . $$ | X X X . . . . $$ | . . . . . . .[/go]
$$Bm9 @ , W has no threats $$ --------------- $$ | 2 3 O O X . . $$ | 1 O O O X . . $$ | . O O X X . . $$ | O O X , . . . $$ | X X X . . . . $$ | . . . . . . .
[go]$$Bm9 @ , W has no threats $$ --------------- $$ | 2 3 O O X . . $$ | 1 O O O X . . $$ | . O O X X . . $$ | O O X , . . . $$ | X X X . . . . $$ | . . . . . . .[/go]
( "3 points": tricky for Bent 4, a confusing shape... ) If W never has time to fill in both throw-in spots, then W is dead. However, if W manages to fill them in, W can still get Bent 4:
$$B Interesting shape... $$ --------------- $$ | 2 1 . O X . . $$ | 3 O . O X . . $$ | . . O X X . . $$ | O O X , . . . $$ | X X X . . . . $$ | . . . . . . .
[go]$$B Interesting shape... $$ --------------- $$ | 2 1 . O X . . $$ | 3 O . O X . . $$ | . . O X X . . $$ | O O X , . . . $$ | X X X . . . . $$ | . . . . . . .[/go]
$$B $$ ------------------------- $$ . . . 1 X X 2 O X 6 . . | $$ . . X O X O . O X 4 . . | $$ . . X X O . 3 O O X X . | $$ . . , 7 O O O 5 X . . . | $$ . . . X X X X X . X . . | $$ . . . . . . . . . . . . |
[go]$$B $$ ------------------------- $$ . . . 1 X X 2 O X 6 . . | $$ . . X O X O . O X 4 . . | $$ . . X X O . 3 O O X X . | $$ . . , 7 O O O 5 X . . . | $$ . . . X X X X X . X . . | $$ . . . . . . . . . . . . |[/go]
$$B (a),(b) miai kill $$ ------------------------- $$ . . . 1 X X 3 O X . . . | $$ . . X O X O a O X b . . | $$ . . X X O . 2 O O X X . | $$ . . , . O O O . X . . . | $$ . . . X X X X X . X . . | $$ . . . . . . . . . . . . |
[go]$$B (a),(b) miai kill $$ ------------------------- $$ . . . 1 X X 3 O X . . . | $$ . . X O X O a O X b . . | $$ . . X X O . 2 O O X X . | $$ . . , . O O O . X . . . | $$ . . . X X X X X . X . . | $$ . . . . . . . . . . . . |[/go]
$$B $$ ----------------------- $$ . . . . . . . . . . . | $$ . X X O . 1 . . O X . | $$ . . X . O . . O . X . | $$ . , X . O . . O . X . | $$ . . . X X . O . X . . | $$ . . . . . X X X . . . | $$ . . . . . . . . . . . |
[go]$$B $$ ----------------------- $$ . . . . . . . . . . . | $$ . X X O . 1 . . O X . | $$ . . X . O . . O . X . | $$ . , X . O . . O . X . | $$ . . . X X . O . X . . | $$ . . . . . X X X . . . | $$ . . . . . . . . . . . |[/go]
Re: L19 Go Problem Championship: Round 17
Posted: Tue Jun 27, 2017 7:31 am
by Shaddy
Problem 1 (3 points)
$$Bc $$ --------------- $$ | . 1 . O X . . $$ | 3 O 2 O X . . $$ | . . O X X . . $$ | O O X , . . . $$ | X X X . . . . $$ | . . . . . . .
[go]$$Bc $$ --------------- $$ | . 1 . O X . . $$ | 3 O 2 O X . . $$ | . . O X X . . $$ | O O X , . . . $$ | X X X . . . . $$ | . . . . . . .[/go]
Problem 2 (6 points)
$$Bc $$ --------------------- $$ . . . 1 X X . O X . . . | $$ . . X O X O 3 O X 2 . . | $$ . . X X O . . O O X X . | $$ . . , . O O O . X . . . | $$ . . . X X X X X . X . . | $$ . . . . . . . . . . . . |
[go]$$Bc $$ --------------------- $$ . . . 1 X X . O X . . . | $$ . . X O X O 3 O X 2 . . | $$ . . X X O . . O O X X . | $$ . . , . O O O . X . . . | $$ . . . X X X X X . X . . | $$ . . . . . . . . . . . . |[/go]
Problem 3 (9 points)
$$Bc $$ ---------------------- $$ . . . 0 9 6 7 . . . . | $$ . X X O 2 1 8 . O X . | $$ . . X . O 5 . O . X . | $$ . , X . O 3 . O . X . | $$ . . . X X 4 O . X . . | $$ . . . . . X X X . . . | $$ . . . . . . . . . . . |
[go]$$Bc $$ ---------------------- $$ . . . 0 9 6 7 . . . . | $$ . X X O 2 1 8 . O X . | $$ . . X . O 5 . O . X . | $$ . , X . O 3 . O . X . | $$ . . . X X 4 O . X . . | $$ . . . . . X X X . . . | $$ . . . . . . . . . . . |[/go]
Ko?
Re: L19 Go Problem Championship: Round 17
Posted: Tue Jun 27, 2017 11:08 am
by Kirby
@EdLee:
Yes, on Problems 1 & 2. Good start on Problem 3.
@Shaddy:
Looks good for first two problems. Ko is the solution for #3, but maybe you can do a bit better if white responds at , as in your diagram?
Re: L19 Go Problem Championship: Round 17
Posted: Fri Jun 30, 2017 3:33 pm
by Monkey
Kirby wrote:Welcome to Round 17 of the L19 Go Problem Championship.
All problems are black to play. As usual, provide your solutions either via hide tags, or direct private message to me.
Problem 1 (3 points)
$$Bc $$ --------------- $$ | . 3 . O X . . $$ | 1 O . O X . . $$ | . 2 O X X . . $$ | O O X , . . . $$ | X X X . . . . $$ | . . . . . . .
[go]$$Bc $$ --------------- $$ | . 3 . O X . . $$ | 1 O . O X . . $$ | . 2 O X X . . $$ | O O X , . . . $$ | X X X . . . . $$ | . . . . . . .[/go]
Problem 2 (6 points)
$$Bc $$ --------------------- $$ . . . 1 X X 2 O X 8 . . | $$ . . X O X O 6 O X 4 . . | $$ . . X X O 9 3 O O X X . | $$ . . , 7 O O O 5 X . . . | $$ . . . X X X X X . X . . | $$ . . . . . . . . . . . . |
[go]$$Bc $$ --------------------- $$ . . . 1 X X 2 O X 8 . . | $$ . . X O X O 6 O X 4 . . | $$ . . X X O 9 3 O O X X . | $$ . . , 7 O O O 5 X . . . | $$ . . . X X X X X . X . . | $$ . . . . . . . . . . . . |[/go]
Problem 3 (9 points)
$$Bc $$ ---------------------- $$ . . . . . . . . . . . | $$ . X X O . . . . O X . | $$ . . X . O . . O . X . | $$ . , X . O . . O . X . | $$ . . . X X . O . X . . | $$ . . . . . X X X . . . | $$ . . . . . . . . . . . |
[go]$$Bc $$ ---------------------- $$ . . . . . . . . . . . | $$ . X X O . . . . O X . | $$ . . X . O . . O . X . | $$ . , X . O . . O . X . | $$ . . . X X . O . X . . | $$ . . . . . X X X . . . | $$ . . . . . . . . . . . |[/go]
Have fun!
Edited: looks like you messed up your hide tags. I've added them, but feel free to re-edit this post. --Hyperpape
Re: L19 Go Problem Championship: Round 17
Posted: Fri Jun 30, 2017 3:47 pm
by hyperpape
Problem 1
$$Bc $$ --------------- $$ | . 1 . O X . . $$ | 3 O 2 O X . . $$ | . 4 O X X . . $$ | O O X , . . . $$ | X X X . . . . $$ | . . . . . . .
[go]$$Bc $$ --------------- $$ | . 1 . O X . . $$ | 3 O 2 O X . . $$ | . 4 O X X . . $$ | O O X , . . . $$ | X X X . . . . $$ | . . . . . . .[/go]
Bent four in the corner.
Problem 2
$$Bc $$ --------------------- $$ . . . 1 X X . O X 4 . . | $$ . . X O X O 5 O X 2 3 . | $$ . . X X O . . O O X X . | $$ . . , . O O O . X . . . | $$ . . . X X X X X . X . . | $$ . . . . . . . . . . . . |
[go]$$Bc $$ --------------------- $$ . . . 1 X X . O X 4 . . | $$ . . X O X O 5 O X 2 3 . | $$ . . X X O . . O O X X . | $$ . . , . O O O . X . . . | $$ . . . X X X X X . X . . | $$ . . . . . . . . . . . . |[/go]
Re: L19 Go Problem Championship: Round 17
Posted: Fri Jun 30, 2017 5:21 pm
by Kirby
@Monkey:
Looks good for problems 1 and 2.
Re: L19 Go Problem Championship: Round 17
Posted: Fri Jun 30, 2017 5:24 pm
by Kirby
@hyperpape:
Problem 1 looks good.
For problem 2, do you have a response for this?
$$Bc $$ --------------------- $$ . . . 1 X X 4 O X . . . | $$ . . X O X O . O X 2 3 . | $$ . . X X O . . O O X X . | $$ . . , . O O O . X . . . | $$ . . . X X X X X . X . . | $$ . . . . . . . . . . . . |
[go]$$Bc $$ --------------------- $$ . . . 1 X X 4 O X . . . | $$ . . X O X O . O X 2 3 . | $$ . . X X O . . O O X X . | $$ . . , . O O O . X . . . | $$ . . . X X X X X . X . . | $$ . . . . . . . . . . . . |[/go]
Re: L19 Go Problem Championship: Round 17
Posted: Sat Jul 01, 2017 10:47 am
by hyperpape
Kirby wrote:@hyperpape:
Problem 1 looks good.
For problem 2, do you have a response for this?
$$Bc $$ --------------------- $$ . . . 1 X X . O X . . . | $$ . . X O X O 3 O X 2 4 5 | $$ . . X X O . . O O X X . | $$ . . , . O O O . X . . . | $$ . . . X X X X X . X . . | $$ . . . . . . . . . . . . |
[go]$$Bc $$ --------------------- $$ . . . 1 X X . O X . . . | $$ . . X O X O 3 O X 2 4 5 | $$ . . X X O . . O O X X . | $$ . . , . O O O . X . . . | $$ . . . X X X X X . X . . | $$ . . . . . . . . . . . . |[/go]
$$Bc $$ --------------------- $$ . . . 1 X X . O X . . . | $$ . . X O X O 3 O X 2 b . | $$ . . X X O . . O O X X . | $$ . . , . O O O . X . . . | $$ . . . X X X X X . X . . | $$ . . . . . . . . . . . . |
[go]$$Bc $$ --------------------- $$ . . . 1 X X . O X . . . | $$ . . X O X O 3 O X 2 b . | $$ . . X X O . . O O X X . | $$ . . , . O O O . X . . . | $$ . . . X X X X X . X . . | $$ . . . . . . . . . . . . |[/go]
b can't make an extra eye, meaning B shouldn't play there
Re: L19 Go Problem Championship: Round 17
Posted: Sun Jul 02, 2017 1:15 pm
by gamesorry
1. Bent four in the corner
$$Bc $$ --------------- $$ | . 1 . O X . . $$ | 3 O 2 O X . . $$ | . 4 O X X . . $$ | O O X , . . . $$ | X X X . . . . $$ | . . . . . . .
[go]$$Bc $$ --------------- $$ | . 1 . O X . . $$ | 3 O 2 O X . . $$ | . 4 O X X . . $$ | O O X , . . . $$ | X X X . . . . $$ | . . . . . . .[/go]
2. Oiotoshi
$$Bc $$ --------------------- $$ . . . 3 X X 2 O X 6 . . | $$ . . X O X O . O X 4 . . | $$ . . X X O . 1 O O X X . | $$ . . , 7 O O O 5 X . . . | $$ . . . X X X X X . X . . | $$ . . . . . . . . . . . . |
[go]$$Bc $$ --------------------- $$ . . . 3 X X 2 O X 6 . . | $$ . . X O X O . O X 4 . . | $$ . . X X O . 1 O O X X . | $$ . . , 7 O O O 5 X . . . | $$ . . . X X X X X . X . . | $$ . . . . . . . . . . . . |[/go]
3.
$$Bc $$ ---------------------- $$ . . b 9 0 7 8 . . . . | $$ . X X O 4 1 2 . O X . | $$ . . X c O 3 . O . X . | $$ . , X a O 5 . O . X . | $$ . . . X X 6 O . X . . | $$ . . . . . X X X . . . | $$ . . . . . . . . . . . |
[go]$$Bc $$ ---------------------- $$ . . b 9 0 7 8 . . . . | $$ . X X O 4 1 2 . O X . | $$ . . X c O 3 . O . X . | $$ . , X a O 5 . O . X . | $$ . . . X X 6 O . X . . | $$ . . . . . X X X . . . | $$ . . . . . . . . . . . |[/go]
Re: L19 Go Problem Championship: Round 17
Posted: Tue Jul 04, 2017 9:07 am
by Monkey
Problem 3 (9 points)
$$Bc $$ ---------------------- $$ . . . 8 . 7 . . . . . | $$ . X X O 4 1 2 . O X . | $$ . . X . O 3 . O . X . | $$ . , X 9 O 5 . O . X . | $$ . . . X X 6 O . X . . | $$ . . . . . X X X . . . | $$ . . . . . . . . . . . |
[go]$$Bc $$ ---------------------- $$ . . . 8 . 7 . . . . . | $$ . X X O 4 1 2 . O X . | $$ . . X . O 3 . O . X . | $$ . , X 9 O 5 . O . X . | $$ . . . X X 6 O . X . . | $$ . . . . . X X X . . . | $$ . . . . . . . . . . . |[/go]
Re: L19 Go Problem Championship: Round 17
Posted: Tue Jul 04, 2017 12:44 pm
by hyperpape
Problem 3
$$Bc $$ ---------------------- $$ . . . . 8 6 7 . . . . | $$ . X X O 4 3 9 . O X . | $$ . . X . O 5 . O . X . | $$ . , X . O 1 . O . X . | $$ . . . X X 2 O . X . . | $$ . . . . . X X X . . . | $$ . . . . . . . . . . . |
[go]$$Bc $$ ---------------------- $$ . . . . 8 6 7 . . . . | $$ . X X O 4 3 9 . O X . | $$ . . X . O 5 . O . X . | $$ . , X . O 1 . O . X . | $$ . . . X X 2 O . X . . | $$ . . . . . X X X . . . | $$ . . . . . . . . . . . |[/go]
$$Bc $$ ---------------------- $$ . . . . . . . . . . . | $$ . X X O 5 3 7 . O X . | $$ . . X . O 4 . O . X . | $$ . , X . O 1 2 O . X . | $$ . . . X X . O . X . . | $$ . . . . . X X X . . . | $$ . . . . . . . . . . . |
[go]$$Bc $$ ---------------------- $$ . . . . . . . . . . . | $$ . X X O 5 3 7 . O X . | $$ . . X . O 4 . O . X . | $$ . , X . O 1 2 O . X . | $$ . . . X X . O . X . . | $$ . . . . . X X X . . . | $$ . . . . . . . . . . . |[/go]
$$Bc $$ ---------------------- $$ . . . . . . . . . . . | $$ . X X O . . . . O X . | $$ . . X . O 2 . O . X . | $$ . , X . O 1 . O . X . | $$ . . . X X . O . X . . | $$ . . . . . X X X . . . | $$ . . . . . . . . . . . |
[go]$$Bc $$ ---------------------- $$ . . . . . . . . . . . | $$ . X X O . . . . O X . | $$ . . X . O 2 . O . X . | $$ . , X . O 1 . O . X . | $$ . . . X X . O . X . . | $$ . . . . . X X X . . . | $$ . . . . . . . . . . . |[/go]
Re: L19 Go Problem Championship: Round 17
Posted: Thu Jul 06, 2017 11:09 pm
by Kirby
I'm on vacation right now, and I'll be going to the US Go Congress after. So let's postpone this competition until mid-August.
tenuki/pass
, W has no threats
, as in your diagram?