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Hactar is developed by Lauri Paatero, 2012-20201 (lauri.paatero@iki.fi).
03/30/2021
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The “Description_ja.xml” file was changed. 03/30/2021
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The “collectionText_ja.properties” file was changed. 03/30/2021
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Hactar can play both go and capture go. Capture go is easier game for the computer, so Hactar can play it against you without a server.
Hactar plays go using a server, this way Hactar has decent strength also in go (Note: Hactar Lite plays at beginner level.)
You can find more information from <a href="http://gowrite.net/hactar/client.php?lang=en">Hactar home pages</a>.
03/26/2021
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Capture G-go is a variant of go. In capture -go the goal is to capture opponents stone(s). Capture Go is easier to learn, but still very challenging game.
03/26/2021
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Go is usually played in a 19 by 19 board, but smaller boards are better for learning the game. 9 by 9 is the best board to start with.
Diagram shows 9x9 board with 3 first three stones played.
03/26/2021
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In go game players try to surround empty territory. PA player with more territory and capture stones wins the game.
03/26/2021
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GOo is an ancient game, it is believed to be more than 4000 years old.
03/26/2021
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In an even game white gets 6.5 extra points to compensate black's right to start the game.
If black player is less skilled than white, a handicap can be used to make the game interesting. Black player may get 2 to 9 handicap stones at the start of the game. In a handicap game white gets 0.5 extra points (komi).
03/26/2021
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The territory sizes are marked into the board. White gets 6.5 point compensation. Black has captured 4 white stones, and two white stones in board (a) are also dead. White has captured 2 black stones (not visible in diagram).
Black has 19 points.
White has 20.5 points.
03/26/2021
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This game has ended. White has a komi of 6.5 points. Neither player has captured stones.
Sizes of different areas in board are shown.
Black has 18 points.
White has 23.5 points (17 in board and 6.5 komi).
So white wins 5.5 points.
03/26/2021
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After the game ends, a result is calculated. Any stones that opponent could capture are calculated as captured.
Player's points are the sum of following:
* The territory he has surrounded,
* captured and capturable opponent's' stones.
White usually gets some extra compensation for black's right to start the the game. This is called komi.
Hactar uses Japanese rules for calculating result.
03/26/2021
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When a player does not want to play, he passes.
GThe game ends with two consecutive passes.
03/26/2021
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GThe game starts from an empty board, and black plays the first stone. GThe goal is to surround empty territory and capture opponent's stones. Game ends when both players pass.
Stones can be captured in the same way as in capture-go.
Repetition of same board position is forbidden similarly to capture 3 game.
03/26/2021
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An example game continuation is shown. White 1 cannot capture the black stone. Black 2 could connect black's stone, but here it does not do it. White 3 may capture black's stone, as stones 1 and 2 already changechanged the whole-board position.
03/26/2021
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Capture 3 stones has onean additional rule: PA player may not play a stone so that it would created somecreates a past board position. So repetition of full -board position is not allowed.
03/26/2021
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White may not capture black immediately after blacks capture, as this would produce the same whole board starting positionposition as before black move. So white must play somewhere else. After this white may capture from A.
03/26/2021
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In the diagram black may play at B. This captures white A. Position after capture is shown below.
03/26/2021
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GThe goal is to capture 3 (or more) opponent stones. Game ends when a first player has captured 3 or more stones.
RA repetition of an exact previous position is forbidden. Other rules are similar to Capture Go.
03/26/2021
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The winner is the player who first captures one or more opponent stone(s)s.
03/26/2021

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