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 Post subject: L19 Go Problem Championship: Round 15
Post #1 Posted: Mon Jun 05, 2017 9:55 pm 
Judan

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Welcome to Round 15 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]$$Bc
$$ ----------------
$$ | . O O O X . . .
$$ | X O . . X X O .
$$ | . X X X O O O .
$$ | . O O O . . . .
$$ | . . . . . . . .[/go]


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


Have fun! :salute:

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Post #2 Posted: Tue Jun 06, 2017 3:05 am 
Judan
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Click Here To Show Diagram Code
[go]$$B
$$ -----------------
$$ | . O O O X . . .
$$ | X O 1 . X X O .
$$ | . X X X O O O .
$$ | . O O O . . . .
$$ | . . . . . . . .[/go]
:study:
Click Here To Show Diagram Code
[go]$$B
$$ ----------------------
$$ . X X X X O . . . X . |
$$ . X O O O O . . O X . |
$$ . X O . . . . O O X . |
$$ . X X O O . X O . X . |
$$ . . . X X X . X X . . |
$$ . . . . . . . . . . . |[/go]
Click Here To Show Diagram Code
[go]$$B
$$ ----------------------
$$ . X X X X O . . . X . |
$$ . X O O O O . . O X . |
$$ . X O . . . . O O X . |
$$ . X X O O . X O . X . |
$$ . . . X X X . X X . . |
$$ . . . . . . . . . . . |[/go]

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 Post subject: Re: L19 Go Problem Championship: Round 15
Post #3 Posted: Tue Jun 06, 2017 6:49 am 
Lives in sente
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KGS: Str1fe, Midorisuke
Problem 1 (3 points)
Click Here To Show Diagram Code
[go]$$Bc
$$ ----------------
$$ | . O O O X . . .
$$ | X O 1 . X X O .
$$ | . X X X O O O .
$$ | . O O O . . . .
$$ | . . . . . . . .[/go]


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

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 Post subject: Re: L19 Go Problem Championship: Round 15
Post #4 Posted: Tue Jun 06, 2017 7:13 am 
Lives in sente
User avatar

Posts: 1152
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Rank: KGS 5d
KGS: Str1fe, Midorisuke
Problem 3 (9 points)
Click Here To Show Diagram Code
[go]$$Bc
$$ | . . . . . .
$$ | X X X . X .
$$ | . . . X . .
$$ | O . O X . .
$$ | . 2 . 3 X .
$$ | 1 O . O X .
$$ | 4 5 O X X .
$$ ------------[/go]

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 Post subject: Re: L19 Go Problem Championship: Round 15
Post #5 Posted: Tue Jun 06, 2017 8:50 am 
Judan

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@Shaddy:
Problem 1: Looks good.

Problem 2: Did you consider this variation?
Click Here To Show Diagram Code
[go]$$Bc
$$ ----------------------
$$ . X X X X O . 3 . X . |
$$ . X O O O O . . O X . |
$$ . X O . 2 1 . O O X . |
$$ . X X O O 4 X O . X . |
$$ . . . X X X . X X . . |
$$ . . . . . . . . . . . |[/go]


Problem 3: Looks good.

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 Post subject: Re: L19 Go Problem Championship: Round 15
Post #6 Posted: Tue Jun 06, 2017 8:50 am 
Judan

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@EdLee:
Problem 1 looks good.

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 Post subject: Re: L19 Go Problem Championship: Round 15
Post #7 Posted: Sun Jun 11, 2017 11:28 pm 
Dies with sente

Posts: 121
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Rank: Chinese 3d
KGS: 3d
DGS: 3d
OGS: 3d
1.
Click Here To Show Diagram Code
[go]$$Bc
$$ ----------------
$$ | . O O O X . 4 .
$$ | X O 1 5 X X O .
$$ | 3 X X X O O O .
$$ | 2 O O O . . . .
$$ | . . . . . . . .[/go]

2.
After B6, white cannot play in a/b:
Click Here To Show Diagram Code
[go]$$Bc
$$ ----------------------
$$ . X X X X O a 1 2 X . |
$$ . X O O O O 5 b O X . |
$$ . X O . 4 3 6 O O X . |
$$ . X X O O 7 X O . X . |
$$ . . . X X X . X X . . |
$$ . . . . . . . . . . . |[/go]


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


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

Variation: W fails (a and b miai)
Click Here To Show Diagram Code
[go]$$Bc
$$ | . . . . . .
$$ | X X X . X .
$$ | 7 6 . X . .
$$ | O b O X . .
$$ | a . 2 3 X .
$$ | 1 O 4 O X .
$$ | 5 . O X X .
$$ ------------[/go]

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 Post subject: Re: L19 Go Problem Championship: Round 15
Post #8 Posted: Mon Jun 12, 2017 8:27 pm 
Judan

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Studying some stuff this week - deadline for this round extended by a week.

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 Post subject: Re: L19 Go Problem Championship: Round 15
Post #9 Posted: Wed Jun 14, 2017 4:14 pm 
Dies in gote

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Rank: KGS 1 kyu
Kirby wrote:
Welcome to Round 15 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]$$Bc
$$ ----------------
$$ | . O O O X . . .
$$ | X O 1 . X X O .
$$ | . X X X O O O .
$$ | . O O O . . . .
$$ | . . . . . . . .[/go]


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


Problem 3 (9 points)
[go]$$Bc

still thinking of solution for this last one


Have fun! :salute:

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 Post subject: Re: L19 Go Problem Championship: Round 15
Post #10 Posted: Sat Jun 17, 2017 7:37 am 
Dies in gote

Posts: 33
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Rank: KGS 1 kyu
Problem 3 (9 points)
Click Here To Show Diagram Code
[go]$$Bc
$$ | . . . . . .
$$ | X X X . X .
$$ | . 2 5 X . .
$$ | O 1 O X . .
$$ | . 4 3 . X .
$$ | . O . O X .
$$ | . . O X X .
$$ ------------[/go]

:w6: connects at :b1:
Click Here To Show Diagram Code
[go]$$Bc
$$ | . . . . . .
$$ | X X X . X .
$$ | . O X X . .
$$ | O O O X . .
$$ | . O X 3 X .
$$ | 1 O 4 O X .
$$ | 2 5 O X X .
$$ ------------[/go]

ko

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 Post subject: Re: L19 Go Problem Championship: Round 15
Post #11 Posted: Mon Jun 19, 2017 8:02 pm 
Judan

Posts: 7421
Liked others: 1347
Was liked: 1141
KGS: Kirby
Tygem: 커비라고해
Solutions and updated leader board are given below.

Problem 1


Problem 2


Problem 3


Leaderboard
  1. gamesorry - 175
  2. EdLee - 112
  3. dfan - 104
  4. Shaddy - 98
  5. Schachus - 77
  6. hyperpape - 39
  7. jeromie - 31
  8. mongus - 19
  9. Monkey - 18
  10. Lanrose - 16
  11. ez4u - 9
  12. fractic - 6
  13. Marcus - 5

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