It is currently Thu Mar 28, 2024 7:29 am

All times are UTC - 8 hours [ DST ]




Post new topic Reply to topic  [ 10 posts ] 
Author Message
Offline
 Post subject: L19 Go Problem Championship: Round 6
Post #1 Posted: Fri Mar 24, 2017 11:18 pm 
Honinbo

Posts: 9545
Liked others: 1600
Was liked: 1711
KGS: Kirby
Tygem: 커비라고해
Welcome to Round 6 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)
Click Here To Show Diagram Code
[go]$$Bc
$$ ------------------
$$ | . . . . . O X . .
$$ | . . . O O O X . .
$$ | . O O X X X X . .
$$ | . X X , . . . . .
$$ | . . . . . . . . .[/go]


Problem 2 (6 points)
Click Here To Show Diagram Code
[go]$$Bc
$$ -----------------
$$ . . . . . O . O . |
$$ . X X . . . O X . |
$$ . X O O . . O X . |
$$ . X O . X O X . . |
$$ . X O O O O X . . |
$$ . . X X X X X . . |
$$ . . . . . . . . . |[/go]


Problem 3 (9 points)
Click Here To Show Diagram Code
[go]$$Bc
$$ | . . . . . . . . . . .
$$ | . . . . X X X X X . .
$$ | . . X X O . . . . X .
$$ | . X . O . . O . O X .
$$ | . X O O . O . . O X .
$$ | . . X . . . . . . X .
$$ ----------------------[/go]


Have fun! :salute:

_________________
be immersed

Top
 Profile  
 
Offline
 Post subject:
Post #2 Posted: Sat Mar 25, 2017 4:04 am 
Honinbo
User avatar

Posts: 8859
Location: Santa Barbara, CA
Liked others: 349
Was liked: 2076
GD Posts: 312
Click Here To Show Diagram Code
[go]$$B
$$ -------------------
$$ | . . . . . O X . .
$$ | . . . O O O X . .
$$ | . O O X X X X . .
$$ | . X X , . . . . .
$$ | . . . . . . . . .[/go]
:study: Feeling:
Click Here To Show Diagram Code
[go]$$B (a), (b) miai kill
$$ -------------------
$$ | . . . . . O X . .
$$ | . 1 b O O O X . .
$$ | a O O X X X X . .
$$ | . X X , . . . . .
$$ | . . . . . . . . .[/go]
Click Here To Show Diagram Code
[go]$$B
$$ -------------------
$$ | . . . . . O X . .
$$ | 2 1 3 O O O X . .
$$ | 4 O O X X X X . .
$$ | 5 X X , . . . . .
$$ | . . . . . . . . .[/go]

Click Here To Show Diagram Code
[go]$$B
$$ -------------------
$$ . . . . . O . O . |
$$ . X X . . . O X . |
$$ . X O O . . O X . |
$$ . X O . X O X . . |
$$ . X O O O O X . . |
$$ . . X X X X X . . |
$$ . . . . . . . . . |[/go]
:study: Feeling:
Click Here To Show Diagram Code
[go]$$B
$$ -------------------
$$ . . . . . O . O . |
$$ . X X . 1 . O X . |
$$ . X O O . . O X . |
$$ . X O . X O X . . |
$$ . X O O O O X . . |
$$ . . X X X X X . . |
$$ . . . . . . . . . |[/go]

Click Here To Show Diagram Code
[go]$$B
$$ | . . . . . . . . . . .
$$ | . . . . X X X X X . .
$$ | . . X X O . . . . X .
$$ | . X . O . . O . O X .
$$ | . X O O . O . . O X .
$$ | . . X . . . . . . X .
$$ -----------------------[/go]
:study: Feeling:
Click Here To Show Diagram Code
[go]$$B
$$ | . . . . . . . . . . .
$$ | . . . . X X X X X . .
$$ | . . X X O . . . . X .
$$ | . X . O . . O . O X .
$$ | . X O O . O . 1 O X .
$$ | . . X . . . . . . X .
$$ -----------------------[/go]

Top
 Profile  
 
Offline
 Post subject: Re: L19 Go Problem Championship: Round 6
Post #3 Posted: Fri Mar 31, 2017 12:00 am 
Lives with ko

Posts: 149
Liked others: 276
Was liked: 49
Rank: 3d
KGS: 3d
DGS: 3d
OGS: 3d
1.
Click Here To Show Diagram Code
[go]$$Bc
$$ ------------------
$$ | . . . . . O X . .
$$ | . 1 2 O O O X . .
$$ | 3 O O X X X X . .
$$ | . X X , . . . . .
$$ | . . . . . . . . .[/go]


Variation:
Click Here To Show Diagram Code
[go]$$Bc
$$ ------------------
$$ | . . . . . O X . .
$$ | 2 1 3 O O O X . .
$$ | . O O X X X X . .
$$ | . X X , . . . . .
$$ | . . . . . . . . .[/go]


2.

Click Here To Show Diagram Code
[go]$$Bc
$$ -----------------
$$ . . 6 3 4 O . O . |
$$ . X X 2 1 . O X . |
$$ . X O O 7 5 O X . |
$$ . X O . X O X . . |
$$ . X O O O O X . . |
$$ . . X X X X X . . |
$$ . . . . . . . . . |[/go]


Variation:
Click Here To Show Diagram Code
[go]$$Bc
$$ -----------------
$$ . . . 3 5 O . O . |
$$ . X X 2 1 . O X . |
$$ . X O O 4 . O X . |
$$ . X O . X O X . . |
$$ . X O O O O X . . |
$$ . . X X X X X . . |
$$ . . . . . . . . . |[/go]


B3 fails (seki)
Click Here To Show Diagram Code
[go]$$Bc
$$ -----------------
$$ . . . 5 6 O . O . |
$$ . X X 2 1 . O X . |
$$ . X O O 3 4 O X . |
$$ . X O . X O X . . |
$$ . X O O O O X . . |
$$ . . X X X X X . . |
$$ . . . . . . . . . |[/go]


B3 fails
Click Here To Show Diagram Code
[go]$$Bc
$$ -----------------
$$ . . . 5 . O . O . |
$$ . X X 2 1 6 O X . |
$$ . X O O 4 3 O X . |
$$ . X O . X O X . . |
$$ . X O O O O X . . |
$$ . . X X X X X . . |
$$ . . . . . . . . . |[/go]


3.
Intuitions (a-g):
Click Here To Show Diagram Code
[go]$$Bc
$$ | . . . . . . . . . . .
$$ | . . . . X X X X X . .
$$ | . . X X O d . e . X .
$$ | . X . O g . O . O X .
$$ | . X O O . O . b O X .
$$ | . . X . f . a . c X .
$$ ----------------------[/go]


Need to study more :)

Top
 Profile  
 
Offline
 Post subject: Re: L19 Go Problem Championship: Round 6
Post #4 Posted: Fri Mar 31, 2017 1:03 pm 
Honinbo

Posts: 9545
Liked others: 1600
Was liked: 1711
KGS: Kirby
Tygem: 커비라고해
@gamesorry:
Correct on the first two problems. I'll release solutions this evening (8~10 hours from now?).

_________________
be immersed

Top
 Profile  
 
Offline
 Post subject: Re: L19 Go Problem Championship: Round 6
Post #5 Posted: Sat Apr 01, 2017 10:49 am 
Tengen

Posts: 4380
Location: North Carolina
Liked others: 499
Was liked: 733
Rank: AGA 3k
GD Posts: 65
OGS: Hyperpape 4k
Problem 1
Click Here To Show Diagram Code
[go]$$Bc
$$ ------------------
$$ | 5 . 6 . . O X . .
$$ | 4 1 2 O O O X . .
$$ | 3 O O X X X X . .
$$ | . X X , . . . . .
$$ | . . . . . . . . .[/go]


Click Here To Show Diagram Code
[go]$$Bc
$$ ------------------
$$ | . . . . . O X . .
$$ | 2 1 3 O O O X . .
$$ | . O O X X X X . .
$$ | . X X , . . . . .
$$ | . . . . . . . . .[/go]


Problem 2
Click Here To Show Diagram Code
[go]$$Bc
$$ -----------------
$$ . . . . 4 O . O . |
$$ . X X 3 2 . O X . |
$$ . X O O 1 5 O X . |
$$ . X O . X O X . . |
$$ . X O O O O X . . |
$$ . . X X X X X . . |
$$ . . . . . . . . . |[/go]


Click Here To Show Diagram Code
[go]$$Bc
$$ -----------------
$$ . . . . 4 O . O . |
$$ . X X 2 3 . O X . |
$$ . X O O 1 5 O X . |
$$ . X O . X O X . . |
$$ . X O O O O X . . |
$$ . . X X X X X . . |
$$ . . . . . . . . . |[/go]


I feel like I must be missing some complication?

Click Here To Show Diagram Code
[go]$$Bc
$$ -----------------
$$ . . . 5 6 O . O . |
$$ . X X 4 3 . O X . |
$$ . X O O 1 2 O X . |
$$ . X O . X O X . . |
$$ . X O O O O X . . |
$$ . . X X X X X . . |
$$ . . . . . . . . . |[/go]

_________________
Occupy Babel!

Top
 Profile  
 
Offline
 Post subject: Re: L19 Go Problem Championship: Round 6
Post #6 Posted: Sat Apr 01, 2017 12:36 pm 
Honinbo

Posts: 10905
Liked others: 3651
Was liked: 3374
@ hyperpape

Click Here To Show Diagram Code
[go]$$Bc Two eyes
$$ -----------------
$$ . . . . . O . O . |
$$ . X X 3 2 . O X . |
$$ . X O O 1 4 O X . |
$$ . X O . X O X . . |
$$ . X O O O O X . . |
$$ . . X X X X X . . |
$$ . . . . . . . . . |[/go]


Click Here To Show Diagram Code
[go]$$Bc Seki
$$ -----------------
$$ . . . 5 . O . O . |
$$ . X X 4 2 . O X . |
$$ . X O O 1 3 O X . |
$$ . X O . X O X . . |
$$ . X O O O O X . . |
$$ . . X X X X X . . |
$$ . . . . . . . . . |[/go]

_________________
The Adkins Principle:
At some point, doesn't thinking have to go on?
— Winona Adkins

Visualize whirled peas.

Everything with love. Stay safe.

Top
 Profile  
 
Offline
 Post subject: Re: L19 Go Problem Championship: Round 6
Post #7 Posted: Sun Apr 02, 2017 10:00 pm 
Honinbo

Posts: 9545
Liked others: 1600
Was liked: 1711
KGS: Kirby
Tygem: 커비라고해
Thanks for helping out, Bill. It's been a busier weekend than expected, so I was a little bit delayed :-)

_________________
be immersed

Top
 Profile  
 
Offline
 Post subject: Re: L19 Go Problem Championship: Round 6
Post #8 Posted: Sun Apr 02, 2017 10:00 pm 
Honinbo

Posts: 9545
Liked others: 1600
Was liked: 1711
KGS: Kirby
Tygem: 커비라고해
Solutions and updated leader board are given below.

Problem 1


Problem 2


Problem 3


Leaderboard
  1. gamesorry - 91
  2. Schachus - 52
  3. Shaddy - 49
  4. EdLee - 43
  5. dfan - 34
  6. hyperpape - 19
  7. Lanrose - 16
  8. jeromie - 13
  9. mongus - 10

_________________
be immersed

Top
 Profile  
 
Offline
 Post subject: Re: L19 Go Problem Championship: Round 6
Post #9 Posted: Mon Apr 03, 2017 1:15 am 
Lives with ko

Posts: 149
Liked others: 276
Was liked: 49
Rank: 3d
KGS: 3d
DGS: 3d
OGS: 3d
@Kirby
Thank you for waiting, sorry that I was busy this weekend and didn't get to think over the third one (the 2nd intuition was correct, so my neural network needs a little tuning ;-))


This post by gamesorry was liked by: Kirby
Top
 Profile  
 
Offline
 Post subject: Re: L19 Go Problem Championship: Round 6
Post #10 Posted: Mon Apr 03, 2017 10:26 am 
Honinbo

Posts: 9545
Liked others: 1600
Was liked: 1711
KGS: Kirby
Tygem: 커비라고해
gamesorry wrote:
@Kirby
Thank you for waiting, sorry that I was busy this weekend and didn't get to think over the third one (the 2nd intuition was correct, so my neural network needs a little tuning ;-))


I totally understand :-)

_________________
be immersed

Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 10 posts ] 

All times are UTC - 8 hours [ DST ]


Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group