Connection game

A connection game is a type of abstract strategy game in which players attempt to complete a specific type of connection with their pieces. This could involve forming a path between two or more goals, completing a closed loop, or connecting all of one's pieces so they are adjacent to each other. Connection games typically have simple rules, but complex strategies. They have minimal components and may be played as board games, computer games, or even paper and pencil games.

In many connection games, the goal is to connect two opposite sides of the board. In these games, players take turns placing or moving pieces until one side has a continuous line of pieces connecting the two sides of the playing area. Hex, TwixT, and PÜNCT are typical examples of this type of game.

Popular Connection Games

Havannah

Examples of the three winning structures in Havannah, on a base-8 board. From left to right, they are the fork, the ring and the bridge.

Main article: Havannah

Havannah is a two-player abstract strategy board game invented by Christian Freeling. It belongs to the family of games commonly called connection games; its relatives include Hex and TwixT. Havannah has "a sophisticated and varied strategy" and is best played on a base-10 hexagonal board, 10 hex cells to a side.

The game was published for a period in Germany by Ravensburger, with a smaller, base-8 board suitable for beginners. It is nowadays only produced by Hexboards.

Hex

Main article: Hex

11×11 Hex gameboard showing a winning configuration for Blue

Hex is a two player abstract strategy board game in which players attempt to connect opposite sides of a hexagonal board. Hex was invented by mathematician and poet Piet Hein in 1942 and independently by John Nash in 1948.

It is traditionally played on an 11×11 rhombus board, although 13×13 and 19×19 boards are also popular. Each player is assigned a pair of opposite sides of the board which they must try to connect by taking turns placing a stone of their color onto any empty space. Once placed, the stones are unable to be moved or removed. A player wins when they successfully connect their sides together through a chain of adjacent stones. Draws are impossible in Hex due to the topology of the game board.

The game has deep strategy, sharp tactics and a profound mathematical underpinning related to the Brouwer fixed-point theorem. The game was first marketed as a board game in Denmark under the name Con-tac-tix, and Parker Brothers marketed a version of it in 1952 called Hex; they are no longer in production. Hex can also be played with paper and pencil on hexagonally ruled graph paper.

Tak

Main article: Tak

Tak Endgame on Selas Board

Tak is a two-player abstract strategy game designed by James Ernest and Patrick Rothfuss and published by Cheapass Games in 2016. Its design was based around the fictional game of Tak described in Patrick Rothfuss' 2011 fantasy novel The Wise Man's Fear.

The goal of Tak is to be the first to connect two opposite edges of the board with your pieces, called "stones", and create a road. To accomplish this, players take turns placing their own stones and building their road while blocking and capturing their opponent's pieces to hinder their efforts at the same. A player "captures" a stone by stacking one of their pieces on top of the opponent's. This creates a three dimensional element to the game play absent in other well known connection games, such as hex.

The Game of Y

Main article: Y

A commercially-sold Y board

Y is an abstract strategy board game, first described by John Milnor in the early 1950s. The goal of Y is similar to Hex except that each player has the identical goal of making a connection between all three sides forming a "Y" rather than "owning" specific sides that must be connected. The game was independently invented in 1953 by Craige Schensted and Charles Titus. It is an early member in a long line of games Schensted has developed, each game more complex but also more generalized.

List of connection games

See also: Category:Connection games

• Bridg-It, also called Gale
• Crosstrack
• Dots
• Gonnect
• Havannah
• Hex, also called Con-tac-tix, Nash, or Polygon
• Lines of action
• Onyx
• PÜNCT
• Selfo
• Shannon switching game
• Star
• *Star
• Tak
• Through the Desert
• Trax
• TwixT
• Y

See also

• Combinatorial game theory
• Mathematical games