DIAMOND VS GIPF

Diamond is a two-player abstract strategy board game invented by Larry Back. The invention was inspired by the game Kensington, which uses a similar board pattern and game objective. Rules for Diamond were conceived in 1985 and finalized in 1994. Diamond introduces a new board geometry and neutral pieces, with the aim of enhancing the game dynamic and lowering the potential for draws. Diamond was featured in the February 2013 issue of Games magazine. The Diamond gameboard consists of interlocking squares and triangles. White and Black each control 12 game pieces of their own color. Neutral pieces (red-colored in the diagrams) enter the game via captures. The pieces are played on the line intersections (called points, as in Go). White and black (but not red) pieces can move along straight lines to adjacent unoccupied points. A player wins by being the first to occupy all four corners (points) of a board square with their pieces. Capturing moves are possible in the Movement phase. If the points of a triangle contain exactly one white and one black piece, either player can capture the opponent piece by occupying the remaining open point ("cornering" the enemy piece on the triangle). The captured piece can be cornered on one triangle (see Example 1), or simultaneously cornered on two different triangles (Example 4). The captured piece is immediately removed from the game and replaced on its point by a neutral piece. If a move simultaneously corners two opponent pieces on two different triangles, then neither enemy piece is captured (Examples 2 and 3). A piece can move safely to a triangle point even if the other two points of the triangle are occupied by enemy pieces (Example 5).

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GIPF is an abstract strategy board game by Kris Burm, the first of six games in his series of games called the GIPF Project. GIPF was recommended by Spiel des Jahres in 1998. Players take turns pushing tokens (one player taking black, the other white) from the edge of the tri-gridded, hexagonal board, with pieces already in play pushed in front of the new placements rather than allowing more than one piece on any space. The game is lost if a player has no more tokens to play, and since each starts with a set number of tokens, it is clearly necessary to recycle pieces already positioned to keep playing. This is achieved by contriving to line up four pieces of the same colour in a row on the board, at which point those tokens are returned to their owner, and any opposing tokens extending from the line of four are captured. Because a single player will often move several pieces and change numerous on-board relationships, it is remarkably difficult to predict the state of the board more than one turn ahead, despite GIPF being a game of perfect information. Play tends to be highly fluid and there is no real concept of long term territorial or spatial development. The game can be expanded with extra pieces (available separately) called Potentials, which allow different kinds of moves to be made. These are named for the other games in the GIPF Project, though the other games are not actually necessary in order to utilise the Potentials named after them.

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