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Line up four

Connect 4

Drop discs and line up four in a row before your rival.

2 playersStrategyBrowser multiplayer
The objective

What you are trying to do

Make a horizontal, vertical, or diagonal line of four before your rival.

01

Choose a column

Players alternate; each disc falls to the lowest open cell.

02

Build two threats

A single threat can be blocked. Connected structures can force the opponent to answer the wrong side.

03

Connect or draw

The first line of four wins. A completely filled board without one is a draw.

Server-authoritative guide

Complete rules for Connect 4

These are the disclosed rules used by the room—not a simplified summary that changes once the match begins.

  1. 01

    Players take turns dropping a disc into a column.

  2. 02

    Discs fall to the lowest free slot in that column.

  3. 03

    Line up four of your discs in a row - across, down, or diagonally - to win.

  4. 04

    If the board fills up with no four in a row, it is a draw.

  5. 05

    Red moves first.

Choose the table

Modes & room settings

Every setting below is validated by the server. The default is marked so a new host knows exactly what will run without changing anything.

One complete ruleset

Classic setup—no hidden host modifiers

Connect 4 currently runs the complete rules shown above for every room. The host chooses who joins and when to start, but cannot silently change the board, scoring, or win condition.

Before your first match

Three useful habits

01

The center column participates in more possible lines than an edge.

02

Check the opponent's immediate winning drops before playing your own plan.

03

A strong move creates two different winning cells for the next turn.