Criocha társasjáték

Angol leírás

Introduction:Criocha (from Irish: Críoch, meaning "territory, boundary") is a drawless game for two players: Black and White. It is played on the intersections (points) of a initially empty square board. The default board size is 17 points per side, but it can be played on a 15-sized board for intermediate players or a 13-sized board for beginners. There is also a location outside the board called prison. Each player has access to a sufficient supply of stones of their own color.

This game is based on Anda.

Definitions:– A group is a set of stones of the same color connected orthogonally. A single stone is also a group.
– A supergroup is a set of groups of the same color connected diagonally. A single group is also a supergroup.
– A liberty is an empty point adjacent orthogonally or diagonally to a group.
– A smothered group is a group where all its liberties has a path of N empty points connected to exactly one enemy supergroup, where N can be zero.
– A territory is a set of connected empty points. You own a territory if you are the only one who can place stones on those points.
– To annihilate is to place a stone on an empty point that smother all enemy groups, leaving the board with stones only of your color. You cannot annihilate if your opponent also annihilated in a previous turn.

Turns:Black plays first, then turns alternate. On your turn, perform one of the following actions:

– Place a stone of your color on an empty point, then move all smothered friendly and enemy groups to prison. If it's your first turn, do this twice on non-adjacent empty points.
– Remove an enemy stone from prison.

At the end of your turn, the group of the stone you placed cannot be left smothered.

End of the game:– The player who made the last move wins the game.
– A player has the option to "propose end" of the game and the other player must accept it or not. In case of acceptance, points will be counted by adding the friendly territory and enemy prisoners, and also awarding an extra half point to the player who made the last move.

For the game to be fair, before it starts:

– Player 1 places two black stones.
– Player 2 either (i) swaps or (ii) places two white stones.
　– If (i), Player 1 places two white stones and Player 2 either swaps or accepts.
　– If (ii), Player 1 either swaps or accepts.

Then, the player with the black stones offers a komi pie, where the first player places several black stones in the prison and the second player chooses a side. The player with the white stones either swaps or accepts. I have called this balancing method dual pie rule.

Variant:For a simpler option, each player places two stones of their color on non-adjacent corners during game setup. Then Black starts the game by playing the first normal turn. The komi pie can also be used for balance.

Additionally, for better visual clarity it is recommended that beginners start playing with optional captures.

Notes:Special thanks to Christopher Field for his contribution to a simpler alternative balancing method. The prison mechanism was introduced by David Wolfe and Elwyn Berlekamp in their book "Mathematical Go: Chilling Gets the Last Point".

—description from the designer