Life In 19x19 :: L19 Go Problem Championship: Round 15

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L19 Go Problem Championship: Round 15 http://lifein19x19.com/viewtopic.php?f=15&t=14293	Page 1 of 1

Author: Kirby [ Mon Jun 05, 2017 9:55 pm ]

Post subject: L19 Go Problem Championship: Round 15

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!

Author:	EdLee [ Tue Jun 06, 2017 3:05 am ]
Post subject:
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 . . . . $$ \| . . . . . . . .[/go]` Click Here To Show Diagram Code `[go]$$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]`

Author:	Shaddy [ Tue Jun 06, 2017 6:49 am ]
Post subject:	Re: L19 Go Problem Championship: Round 15
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]`

Author:	Shaddy [ Tue Jun 06, 2017 7:13 am ]
Post subject:	Re: L19 Go Problem Championship: Round 15
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]`

Author:	Kirby [ Tue Jun 06, 2017 8:50 am ]
Post subject:	Re: L19 Go Problem Championship: Round 15
@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.

Author:	Kirby [ Tue Jun 06, 2017 8:50 am ]
Post subject:	Re: L19 Go Problem Championship: Round 15
@EdLee: Problem 1 looks good.

Author:	gamesorry [ Sun Jun 11, 2017 11:28 pm ]
Post subject:	Re: L19 Go Problem Championship: Round 15
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]`

Author:	Kirby [ Mon Jun 12, 2017 8:27 pm ]
Post subject:	Re: L19 Go Problem Championship: Round 15
Studying some stuff this week - deadline for this round extended by a week.

Author:	Monkey [ Wed Jun 14, 2017 4:14 pm ]
Post subject:	Re: L19 Go Problem Championship: Round 15
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!

Author:	Monkey [ Sat Jun 17, 2017 7:37 am ]
Post subject:	Re: L19 Go Problem Championship: Round 15
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 . $$ ------------[/go]` connects at Click Here To Show Diagram Code `[go]$$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

Author:	Kirby [ Mon Jun 19, 2017 8:02 pm ]
Post subject:	Re: L19 Go Problem Championship: Round 15
Solutions and updated leader board are given below. Problem 1 Problem 2 Problem 3 Leaderboard gamesorry - 175 EdLee - 112 dfan - 104 Shaddy - 98 Schachus - 77 hyperpape - 39 jeromie - 31 mongus - 19 Monkey - 18 Lanrose - 16 ez4u - 9 fractic - 6 Marcus - 5

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