Connect Four (also known as Four Up, Plot Four, Find Four, Captain's Mistress, Four in a Row, Drop Four, and Gravitrips in the Soviet Union) is a two-...
Connect Four (also known as Four Up, Plot Four, Find Four, Captain's Mistress, Four in a Row, Drop Four, and Gravitrips in the Soviet Union) is a two-player connection board game, in which the players choose a color and then take turns dropping colored discs into a seven-column, six-row vertically suspended grid. The pieces fall straight down, occupying the lowest available space within the column. The objective of the game is to be the first to form a horizontal, vertical, or diagonal line of four of one's own discs. Connect Four is a solved game. The first player can always win by playing the right moves.
The game was first sold under the Connect Four trademark by Milton Bradley in February 1974.
Connect Four is a two-player game with perfect information for both sides. This term describes games where one player at a time plays, players have all the information about moves that have taken place and all moves that can take place, for a given game state. Connect Four also belongs to the classification of an adversarial, zero-sum game, since a player's advantage is an opponent's disadvantage.
One measure of complexity of the Connect Four game is the number of possible games board positions. For classic Connect Four played on 6 high, 7 wide grid, there are 4,531,985,219,092 positions for all game boards populated with 0 to 42 pieces.
The game was first solved by James Dow Allen (October 1, 1988), and independently by Victor Allis (October 16, 1988).
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DALDØS
Daldøs is a running-fight board game only known from a few coastal locations in southern Scandinavia, where its history can be traced back to around 1...
Daldøs is a running-fight board game only known from a few coastal locations in southern Scandinavia, where its history can be traced back to around 1800. The game is notable for its unusual four-sided dice (stick or long dice). In Denmark it is known as daldøs in Northern and Western Jutland (Mors, Thisted and Fanø), and possibly as daldos on Bornholm. In Norway it is known under the name of daldøsa from Jæren, where, unlike in Denmark, a continuous tradition of the daldøs game exists. Daldøs has much in common with some games in the sáhkku family of Sámi board games. Sáhkku is known to have been played among Sámi on the northern coast and eastern-central inland of Sápmi, far away from Jæren and Denmark. Otherwise, the closest relatives of this game appear to be the tâb games from Northern Africa and South-western Asia, possibly apart from one unlabelled diagram in a codex from Southern England.
The board is boat-shaped and has three parallel rows of holes, two of which (A and B) have 16 holes each, while the middle row has an extra hole in the prow of the ship.
Each player has 16 spatula-shaped pieces with a bottom end fitting into the holes of the board. One player has pieces that are rather wide and thin; whereas the other player's pieces are more obelisk-shaped. At the beginning of the game, player A's pieces are placed in the holes of row A so that the spatulas are perpendicular to the row (un-dalled), and equivalently for player B. Later in the game, the pieces will be turned (fordallede, or dalled) so that the spatula is parallel to the rows.
Two special dice are used. Each die is a four-sided long die with pyramidal or rounded ends, preventing the die from standing on end. They may be about 2 by 2 cm in cross section, and 4 cm long. The four sides are marked A (with the value 1, called dallen, i.e. the dal), II (2, probably called døs), III (3) and IIII (4). According to some sources, the dal is opposite to III.
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