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(Redirected from Connect 4)
'Connect Four' (also known as 'Plot Four', 'Four In A Row', and 'Four In A Line') is a two-player board game in which the players take turns in dropping discs into a seven column grid with the objective of getting four of one's own discs in a line.
The game was published by Milton Bradley in 1974; a non-proprietary version is known as "'The Captain's Mistress'".
Connect Four has been solved by James D. Allen (Oct 1, 1988), and independently by Victor Allis (Oct 16, 1988)[1]. With perfect play, the first player can force a win by starting in the middle column. Starting in the two adjacent columns allows the second player to reach a draw; starting with the four outer columns even allows the second player to force a win.
Some variations to the basic game of connect4 exist and are commonly played but rarely documented. There are many other "n-in-a-row" abstract strategy games. Some common variants to the basic game of connect4 are listed here:
★ ConnectN. Simply try to connect more or fewer than the standard 4.
★ Play connect4 on a draughts board. Treat one edge as the bottom and manually implement gravity. This makes it easy to play different board sizes.
★ Wrap around connect4. Treat the edges as though they are linked. I.e. As if playing on a cylinder.
★ Double connect4. The first player plays 1 piece. Then all moves consist of playing 2 pieces.
★ Continue play until the entire board is filled. The player with the most sets of four in a row wins. Alternately, four in a row are worth one point, five in a row are worth two, six are worth three, and seven are worth four. The player with the most points wins.
★ Score Four is played on a 3-dimensional 4x4x4 grid, published by Hasbro under the name ''Connect Four Advanced''.
★ 2 Connect 2 adds neutral pieces where a win must include two of the neutral
★ Victor Allis's Master's Thesis containing the solution of the game
★ James D. Allen's page on Connect 4, his Expert Play in Connect 4, and John Tromp's history of solutions
★
1. http://homepages.cwi.nl/~tromp/c4/c4.html
A Connect Four game in progress. Red to move; yellow wins.
'Connect Four' (also known as 'Plot Four', 'Four In A Row', and 'Four In A Line') is a two-player board game in which the players take turns in dropping discs into a seven column grid with the objective of getting four of one's own discs in a line.
The game was published by Milton Bradley in 1974; a non-proprietary version is known as "'The Captain's Mistress'".
| Contents |
| Perfect play |
| Variations |
| External links |
| References |
Perfect play
Connect Four has been solved by James D. Allen (Oct 1, 1988), and independently by Victor Allis (Oct 16, 1988)[1]. With perfect play, the first player can force a win by starting in the middle column. Starting in the two adjacent columns allows the second player to reach a draw; starting with the four outer columns even allows the second player to force a win.
Variations
Some variations to the basic game of connect4 exist and are commonly played but rarely documented. There are many other "n-in-a-row" abstract strategy games. Some common variants to the basic game of connect4 are listed here:
★ ConnectN. Simply try to connect more or fewer than the standard 4.
★ Play connect4 on a draughts board. Treat one edge as the bottom and manually implement gravity. This makes it easy to play different board sizes.
★ Wrap around connect4. Treat the edges as though they are linked. I.e. As if playing on a cylinder.
★ Double connect4. The first player plays 1 piece. Then all moves consist of playing 2 pieces.
★ Continue play until the entire board is filled. The player with the most sets of four in a row wins. Alternately, four in a row are worth one point, five in a row are worth two, six are worth three, and seven are worth four. The player with the most points wins.
★ Score Four is played on a 3-dimensional 4x4x4 grid, published by Hasbro under the name ''Connect Four Advanced''.
★ 2 Connect 2 adds neutral pieces where a win must include two of the neutral
External links
★ Victor Allis's Master's Thesis containing the solution of the game
★ James D. Allen's page on Connect 4, his Expert Play in Connect 4, and John Tromp's history of solutions
★
References
1. http://homepages.cwi.nl/~tromp/c4/c4.html
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