page_title: Connect Four
section_title: Rule variations
hierarchical_section_title: Connect Four / Rule variations
caption_attribution_description: English: Connect Four Svenska: Fyra i rad
context_page_description: Connect Four 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.
context_section_description: There are many variations of Connect Four with differing game board sizes, game pieces, and/or gameplay rules. Many variations are popular with game theory and artificial intelligence research, rather than with physical game boards and gameplay by persons.
  The most commonly used Connect Four board size is 7 columns × 6 rows. Size variations include 5×4, 6×5, 8×7, 9×7, 10×7, 8×8, Infinite Connect-Four,
  and Cylinder-Infinite Connect-Four.
  Several versions of Hasbro's Connect Four physical gameboard make it easy to remove game pieces from the bottom one at a time. Along with traditional gameplay, this feature allows for variations of the game.
  Some earlier game versions also included specially marked discs, and cardboard column extenders, for additional variations to the game.
caption: A travel version of the Milton Bradley game.
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