It is currently Sun May 28, 2017 5:21 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 
Judan

Posts: 7351
Liked others: 1335
Was liked: 1121
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:

_________________
Discipline is remembering what you want. -David Campbell

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

Posts: 7361
Location: Santa Barbara, CA
Liked others: 268
Was liked: 1651
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 
Dies with sente

Posts: 114
Liked others: 137
Was liked: 37
Rank: Chinese 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 
Judan

Posts: 7351
Liked others: 1335
Was liked: 1121
KGS: Kirby
Tygem: 커비라고해
@gamesorry:
Correct on the first two problems. I'll release solutions this evening (8~10 hours from now?).

_________________
Discipline is remembering what you want. -David Campbell

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

Posts: 3975
Location: North Carolina
Liked others: 393
Was liked: 653
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  
 
Online
 Post subject: Re: L19 Go Problem Championship: Round 6
Post #6 Posted: Sat Apr 01, 2017 12:36 pm 
Judan

Posts: 6086
Liked others: 1434
Was liked: 2328
@ 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]

_________________
"Drooling Banjos"

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

Posts: 7351
Liked others: 1335
Was liked: 1121
KGS: Kirby
Tygem: 커비라고해
Thanks for helping out, Bill. It's been a busier weekend than expected, so I was a little bit delayed :-)

_________________
Discipline is remembering what you want. -David Campbell

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

Posts: 7351
Liked others: 1335
Was liked: 1121
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

_________________
Discipline is remembering what you want. -David Campbell

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

Posts: 114
Liked others: 137
Was liked: 37
Rank: Chinese 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 
Judan

Posts: 7351
Liked others: 1335
Was liked: 1121
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 :-)

_________________
Discipline is remembering what you want. -David Campbell

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 2 guests


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