Page 9 of 13

Re: My hand-crafted KataGo (+ AlphaGo Teach) self-play games

Posted: Mon Jun 06, 2022 11:59 am
by Maharani
Maharani wrote:Black wins 19 x 19 game 74 (NZ rules, 7 komi) by at least 26 points - see fun score chart below. This is the thirteenth and last game continuing from black 17. C6. https://online-go.com/review/773159
Click Here To Show Diagram Code
[go]$$Bc The opening.
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . X O . . . . O X X . . . . |
$$ | . . . . . . X O . . . X W O X . . . . |
$$ | . X . X . X . O . O . . . O . X . . . |
$$ | . O X . . X . X . . . X . . . . . . . |
$$ | . . O O . . . . O . . . . . . . X . . |
$$ | . O . . . . O . . . . O . O . . . . . |
$$ | . X X O O . . . . . . . . . . . . . . |
$$ | . O O X X O . . . . . . . . . . . . . |
$$ | X O X X O . . . . . . . . . . . X . . |
$$ | . X X X . . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X . . . . . . . . . . . X . X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . . . . . . . O . . . |
$$ | . . . . . O . . . . . . . O . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]
.sgf:

Tang Jie, CHN 5d did a one-hour video review of this game! https://drive.google.com/file/d/1oAA4hh ... sp=sharing

I’ve included all of his (commented) variations, plus more KataGo variations, in the OGS review as well.

Re: My hand-crafted KataGo (+ AlphaGo Teach) self-play games

Posted: Tue Jul 12, 2022 9:11 pm
by Maharani
In game 79 (7 komi, NZ rules), black gets an enormous bottom right corner and side whereas white gets an enormous top and center area enclosing black's top left corner. (The .sgf includes two high-playout variations which appear to be the main line.) https://online-go.com/review/886713
Click Here To Show Diagram Code
[go]$$Wc Game 80 continues at a instead of C10.
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X O O O . O . . . . . . . X O . . |
$$ | . . X X . X a . . . . . . . . X O . . |
$$ | . . . . . . . . . . . . . . . X O . . |
$$ | . . . . . . . . . . . . . . . . X O . |
$$ | . . . . . . . . . . . . . . . . X O . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . B . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . O . . . . . O . . . . . . . . . . . |
$$ | . X O O O . . . . . . . . . . O . . . |
$$ | . X X X . . O . . . . O . X . . . . . |
$$ | . . . . . X . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]
.sgf:


Re: My hand-crafted KataGo (+ AlphaGo Teach) self-play games

Posted: Tue Jul 12, 2022 9:28 pm
by Maharani
In game 80 (7 komi, NZ rules), black starts a huge fight in the bottom right. https://online-go.com/review/897979
Click Here To Show Diagram Code
[go]$$Bc Black to play.
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . O . |
$$ | . . . . . . . . . . . . . . . X X O . |
$$ | . . X O O O . O . . . X . . . X O . . |
$$ | . . X X . X X O . . . . . . . X O . . |
$$ | . . . . . . . . . . . . . . . X O . . |
$$ | . . . . . . . . . . . . . . O . X O . |
$$ | . . . . . . . . . . . W . . . . X O . |
$$ | . . . . . . . . . . . . . . O . X X . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . X . O . . . . . . . |
$$ | . . . . . . . . . . . . . . O . X . . |
$$ | . . . . . . . . . . X . O . . . . . . |
$$ | . . . . . . . . . . . . O X X X . X . |
$$ | . . X . . . . O . X X . O O O X . O . |
$$ | . O . . . . . O . O X X O O X X . O . |
$$ | . X O O O . . . . . O X O X O O O . . |
$$ | . X X X . . O . . . O O X X . . . . . |
$$ | . . . . . X . . . . O X . X . X O . . |
$$ | . . . . . . . . . . . . X . . . . . . |
$$ +---------------------------------------+[/go]
.sgf:


Re: My hand-crafted KataGo (+ AlphaGo Teach) self-play games

Posted: Tue Jul 12, 2022 9:49 pm
by Maharani
Game 81 (7 komi, NZ rules) sees black growing the bottom side. https://online-go.com/review/899626
Click Here To Show Diagram Code
[go]$$Bc The opening.
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . X . . . . . . . . O X . . . |
$$ | . . X . . . . . . . . . . . O . X . . |
$$ | . . X O . . O . . . . . . . . . . . . |
$$ | . . O O . . . . . . . . . . . . X . . |
$$ | . . . . . . . . . . . . . O . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . . . . . . . . . . . |
$$ | . . X O O . O . . . . . . . . . . . . |
$$ | . . O X . . O X . . . . . . . . . . . |
$$ | . . O . . . O X . . . . . . . W . . . |
$$ | . . . . . . O X . . . . O . . . X . . |
$$ | . . . . . O X . . . . X . . . . . . . |
$$ | . . . O . O X . . . . . . . O O O . . |
$$ | . . O X . X . . . . . . X . . X X . . |
$$ | . . O . X . . . . . . . . X . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]
.sgf:


Re: My hand-crafted KataGo (+ AlphaGo Teach) self-play games

Posted: Sat Jul 16, 2022 10:24 am
by Maharani
Starting from game 82 (7 komi, NZ rules), I've been using a 60b network for these games. This one ended up as a draw with only four live groups on the board (one white, three black). https://online-go.com/review/904555
Click Here To Show Diagram Code
[go]$$Wc The opening.
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X X . X . . . . . . . . O X . X . |
$$ | . . X O . . . . . . X . . . O . X . . |
$$ | . . X O . O O O . . . . . . . O O X . |
$$ | . . O O . X X O X . . . . . . O X . . |
$$ | . . . . . . O X O . X . . . O . X . . |
$$ | . . . . . . . X X . . . . . . O O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . X . X . B . |
$$ | . . . O . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . . . . . . O O O . . |
$$ | . . . . . O . . . . . . X . . X X O . |
$$ | . . . . . . . . . . . . . X . . . X . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]
.sgf:


Re: My hand-crafted KataGo (+ AlphaGo Teach) self-play games

Posted: Fri Aug 12, 2022 9:23 pm
by Maharani
Game 83 (7 komi, NZ rules) turned into a complicated center fight. https://online-go.com/review/909261
Click Here To Show Diagram Code
[go]$$Wc Black attacks.
$$ +---------------------------------------+
$$ | . . . . . X . . . . . . . . . . . . . |
$$ | . . . . X . X . . . . . . . . . . . . |
$$ | . . . X O X . . . . . . . . O X . . . |
$$ | . . X . O X . . . . X X X . O . X . . |
$$ | . . X O . . . . . . . O . . . . . . . |
$$ | . O O O . . X . . . . . . . B . X . . |
$$ | . . . . . O X . . . . . . O . O X . . |
$$ | . . X . . O . . . . . . . . O X X . . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . O . . . . . . . . . . O . . . . . |
$$ | . . . O . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . . . . . . O O O . . |
$$ | . . . . . O . . . . . . X . . X X . . |
$$ | . . . . . . . . . . . . . X . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]
.sgf:


Re: My hand-crafted KataGo (+ AlphaGo Teach) self-play games

Posted: Fri Aug 12, 2022 9:32 pm
by Maharani
According to Waltheri, the first five moves of game 84 (7 komi, NZ rules) appear in 849 pro games. Move 6 does not appear in any pro games. https://online-go.com/review/910790
Click Here To Show Diagram Code
[go]$$Wc Seven previous games continued at a instead of Q3. At least one future game will continue at c.
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . a . . . . . . . . . . c . . X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . B . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]
.sgf:


Re: My hand-crafted KataGo (+ AlphaGo Teach) self-play games

Posted: Fri Aug 12, 2022 10:40 pm
by Maharani
Game 85 (7 komi, NZ rules) is only our second game to feature a seki :) Black wins by four points, bringing our current tally to 22 black wins, 30 draws and 33 white wins. This game featured our most dramatic winrate change so far. After move 201, white’s winrate was 87 %. After move 245, black’s winrate was 86 %. https://online-go.com/review/919048
Click Here To Show Diagram Code
[go]$$Wc Game 84 continued at a instead of G4.
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . . . . . . X . . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . a . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . O . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ | . . . . . . . . . . . . X X . . . . . |
$$ | . . . . . . . . . . . . . O X X O O . |
$$ | . . . . . . . . . . . O . O O O X X . |
$$ | . . . . . . . . . . . . . . . X O X . |
$$ | . . . O . . B . . . . . . . . X O X . |
$$ | . . . . . O . . . . . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]
.sgf:


Re: My hand-crafted KataGo (+ AlphaGo Teach) self-play games

Posted: Tue Dec 13, 2022 1:27 pm
by Maharani
In game 86 (NZ rules, 7 komi), a simple 3-3 invasion in the lower left corner sprawls into a large center fight. At move 178, white plays a stone with four liberties which black captures in a ponnuki at move 201. The game ends in a draw. https://online-go.com/review/923443
Click Here To Show Diagram Code
[go]$$Bc Game 87 will continue at a instead of Q5.
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . X . . X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . W a . . |
$$ | . . . O . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]
.sgf:


Re: My hand-crafted KataGo (+ AlphaGo Teach) self-play games

Posted: Tue Dec 13, 2022 1:45 pm
by Maharani
In game 87 (NZ rules, 7 komi), white pretends to play the world's coolest net at move 82, followed by a black power triangle at move 83. https://online-go.com/review/930113
Click Here To Show Diagram Code
[go]$$Bc The opening.
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O O . . . . . . . . . . . . . . . |
$$ | . . . X X . . . . . . . . X . . X . . |
$$ | . O . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . O . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X W . . . . . . . . . . . . . . . |
$$ | . . . O . . X . . . . . X . O X . . . |
$$ | . . X . . O X . . . . . . . O . . . . |
$$ | . . . . . O X . . . . . . X O . O . . |
$$ | . . . O . O X . . . . . . X . . . . . |
$$ | . . . O X X . . . . . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]
.sgf:


Re: My hand-crafted KataGo (+ AlphaGo Teach) self-play games

Posted: Wed Dec 14, 2022 12:43 pm
by Maharani
In game 88 (7 komi, NZ rules), black casually sacrifices an 8-stone group by move 40. White ends up winning the game by around 10 points. https://online-go.com/review/934201
Click Here To Show Diagram Code
[go]$$Bc 16 previous games continued at a instead of C17.
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . W . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . . . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . . . . . . . O . . . |
$$ | . . . . . . . . . . . . . a . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]
.sgf:


Re: My hand-crafted KataGo (+ AlphaGo Teach) self-play games

Posted: Wed Dec 14, 2022 1:53 pm
by Maharani
Game 89 (7 komi, NZ rules) is our first game with four 3-3 invasions. Interestingly, moves 9 - 16 are identical with game 49, although move 9 was reached by a different move order. Game 89 ended as a draw, with black and white each having five living groups on the board. We almost got our first ever flying dagger joseki. (Technically, it's only called "flying dagger" if black move 39 is N6. The result in this game seems to be called "simple inside cut B".) And we got a crane's nest! Check out the cool symmetry at move 82. https://online-go.com/review/936690
Click Here To Show Diagram Code
[go]$$Wc Games 89, 97, 115 and 124 continue at C17. Games 49, 92 and 93 continue at a instead. Games 112 and 123 will continue at c.
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . O . . . . . |
$$ | . . B . . . . . . . . . . X O O O . . |
$$ | . . . O . . . . . . . . . . X X X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . a . . |
$$ | . X . . . . . . . . . . . . . . c . . |
$$ | . . . O . . . . . . . . . . . . . . . |
$$ | . . X O . . . . . . . . . . . X . . . |
$$ | . . X O . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]
.sgf:


Re: My hand-crafted KataGo (+ AlphaGo Teach) self-play games

Posted: Wed Dec 14, 2022 2:26 pm
by Maharani
White wins game 90 (NZ rules, 7 komi) by about 16 points. https://online-go.com/review/940302
Click Here To Show Diagram Code
[go]$$Bc The fun begins.
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . X . . . . . . . . X O . . |
$$ | . . . X . . . . X . O . X . . X O . . |
$$ | . . . . . . . . . . . . . . . X O . . |
$$ | . . . . . . . . . . . . . . O W X O . |
$$ | . . . . . . . . . . . . . . . . X O . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . X . . . O . . . |
$$ | . . X . . . . O X X . . . . . . . . . |
$$ | . O . . . . . O . O O . X . X . . . . |
$$ | . X O O O . . . . . . . . . . O . . . |
$$ | . X X X . . O . . . . O . X . . O . . |
$$ | . . . . . X . . . . . . . . . X O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]
.sgf:


Re: My hand-crafted KataGo (+ AlphaGo Teach) self-play games

Posted: Wed Dec 14, 2022 2:55 pm
by Maharani
Game 91 (7 komi, NZ rules) is the tenth and last game continuing from white 24. H5 (after games 68, 70, 71, 72, 75, 76, 79, 80 and 90). The first crosscut doesn't occur until move 86. https://online-go.com/review/943003
Click Here To Show Diagram Code
[go]$$Bc The fun begins.
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . O X . . . X . O . . . . . . X O . . |
$$ | . O O X . . . X X . O . . . . X O . . |
$$ | . O X X . . . . . . . . . . . X O . . |
$$ | . . O . . . . . X O O . X . . . X O . |
$$ | . O O . O . . O W X . O X . . . X O . |
$$ | . X X X . . . . . . . . . . . . X . . |
$$ | . . . . . . X . . . . O . . . . . . . |
$$ | . . . X . . . . . . . . . . . X . . . |
$$ | . . . . . . X . . . . . . . X O . . . |
$$ | . . O O O . . . X . . . . . X O . . . |
$$ | . . . X . O . O . . . . . . X O . . . |
$$ | . X X . . . . . . X . . . . X X O . . |
$$ | . O . . . . . O . . . O . O . . O . . |
$$ | . X O O O O . . . X . . . . . O . . . |
$$ | . X X X . X O . . . . O . X . . O . . |
$$ | . . . . . X . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]
.sgf:


Re: My hand-crafted KataGo (+ AlphaGo Teach) self-play games

Posted: Wed Dec 14, 2022 4:25 pm
by Maharani
In game 92 (NZ rules, 7 komi), black and white each manage to live with their upper left dragons. It ends as a draw. https://online-go.com/review/944484
Click Here To Show Diagram Code
[go]$$Bc Game 49 continued at a instead of E17.
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . O . . . . . |
$$ | . . . . W X . . . . . . . X O O O . . |
$$ | . . . O . . . . . . . . . . X X X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . X . . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . . . . . . . . . . . |
$$ | . . X O . . . . . . . . . . . X . . . |
$$ | . . X O . . . . . O . . . a . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]
.sgf: