KataGo 7 komi self-play games

That’s just Kata trying to make Michael Redmond upset. :slight_smile:

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In game 94 (7 komi, NZ rules), black gives a 48-point lower side territory away to white in exchange for exerting pressure onto white’s right side group that has invaded black’s moyo there. After black move 249. A9, KataGo suddenly realizes that white is 8 points ahead rather than it being an even game still. Black gets depressed, throws a fit, and in the end white wins by about 30 points.

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In game 95 (7 komi, NZ rules), despite white’s best efforts at reduction, black gets a 49-point lower side territory. Of course, white ends up with a left side group that’s almost as large. The lower left corner features our third seki in this game series. Black wins the game by 2 points.

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@Clossius1, AGA 3d did a 45-minute video review of this game!

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

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Game 96 (7 komi, NZ rules) sees a black and white dragon running through the center, both of them surviving happily. The game ends in a draw.

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Just as with game 89, moves 9 - 16 of game 97 (NZ rules, 7 komi) were also identical with game 49. In fact, despite starting from scratch again, all of moves 1 - 22 of game 97 were identical with game 89. It seems like the 60b neural network currently employed at ZBaduk is much more confident in its opening moves than the previous 40b nets. By move 200, white has sacrificed a seven-stone group that started out as a 3-3 invasion (of which there were four again) in exchange for living small with all of her bottom side stones. It’s another draw.

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Game 98 (7 komi, NZ rules) is a low territory count game that ends with nine living groups on the board. Of course it’s a draw.

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I love these games and your summaries but I never have a clue what’s going on!

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Me neither :smiley:

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In game 99 (7 komi, NZ rules), black’s double approach stones to white’s 4-4 corner link up to surround it completely and make 38 points in the process, while white’s group lives with 4 points. It’s a draw.

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Here’s my 10-kyu rundown of game 100 (7 komi, NZ rules):
Moves 1 — 4: Black takes the upper 4-4 points, white the lower 4-4 points.
5: Black approaches the lower right.
6 — 10: 3-3 joseki in the upper left.
11 — 27: Double-approach joseki in the lower right.
28 — 62: White makes sabaki in black’s left side influence.
63 — 66: Black finishes a moyo in the upper right, white lives with the left side group.
67 — 97: Lower side fight that spills into the center.
98 — 107: White makes sabaki in black’s upper right moyo, splitting black into a solid 11-point corner and a living group on the side.
108 — 117: The lower side fight resolves. Black makes 31 points there.
118 — 122: Black and white solidify their right side groups.
123 — 140: The center fight continues. White finishes a 20-point upper side territory.
141 — 187: The center fight resolves. Black finishes a 4-point territory in the center, white a 10-point territory on the left.
188 — 209: Black and white reduce each other on the right side. Black ends up with 2 points of territory there, white with 3 points.
210 — 218: White finishes a 4-point territory in the center and a 4-point territory in the bottom right.
219 — 306: Yose. The game ends as a draw.

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In game 101 (7 komi, NZ rules), at move 14, white invades black’s lower side moyo. At move 33, black invades white’s left side moyo. At move 55, black invades white’s upper side moyo. At move 80, white invades black’s right side moyo. White wins by 2 points.

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I should be keeping track but out of 100 now, how many draws?

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Oh, Eunkyo Do discussed a very closely related joseki in her Joseki series! (several actually!)

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Moves 8 to 17 of game 102 (7 komi, NZ rules) see white pursuing some very strange aji in black’s upper right corner. After move 196, Kata suddenly realizes that black is ahead by 14 points rather than just 2. White loses her will to live and ends up losing by at least 30 points.

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Game 102 was our hundredth “ranked” game. (In games 42 and 43, white played a slightly suboptimal move 2 in order to achieve a 50 % winrate.)

Our current tally is 24 black wins, 37 draws and 39 white wins, or an effective winrate of 57.5 % for white.

A full 23 % of games continued from these two positions:

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Interesting, that feels like a higher draw rate than I would have guessed but I suppose I shouldn’t be too surprised really.

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I wish it was higher :smiley: I live for KataGo draws. I still dream of a world where professionals at least occasionally play with 7 komi… I definitely feel like the draw rate would be lower than Kata’s 37 %.

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Here’s my 10-kyu rundown of game 103 (7 komi, NZ rules):
Moves 1 — 28: White builds a left-side moyo between two small black corners. Black builds a large upper right moyo.
29 — 39: Black invades white’s moyo and enlarges his own.
40 — 58: White invades and lives in black’s upper right corner in sente, then grabs a lower right corner enclosure.
59 — 65: Black begins to connect his left side group to his upper side territory.
66 — 105: White invades and reduces black’s right side moyo but makes no points. Black makes territory on the bottom in the process.
106 — 115: White forces black into connecting out his left side dragon while white profits in the center.
116 — 311: Basically two hundred moves of end game. :slight_smile: It’s a draw.

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Game 104 (7 komi, NZ rules) was a mindboggling game that featured eight kos and seven freestanding empty triangles. It ended as a draw with only two living groups per player.

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