The Football Offside Law

Offside may be declared when a pass is played to the last defender and an attacking player is in front of them. The offside zone is meant to deter players from waiting near the opposing team’s goal for a ball. When the ball is played to them, they must be positioned behind the final defender to be onside. The opposing team will receive a free kick if the player is deemed offside and in front of the last defender.

In their half, a player cannot be caught offside. A defender does not include the goalkeeper. The player is not considered offside if the ball is played backward and he is in front of the final defender.

A football game is played between two teams, each of which is limited to 11 players on the field at once, one of whom serves as the goalie.
A game is split into two halves of 45 minutes each.
The winning captain chooses which goal to defend or take the opening kick after a coin toss to start the game.
To play the ball, all players must do it with their feet, heads, or chests. Only the goalkeeper may use their hands, and only while in the goal area allotted for them.
The object of the game is to score a goal by kicking or heading the ball into the opposing team’s net.
The team that wasn’t the last to touch the ball must toss it back in if it touches or crosses the sideline.
A central referee and two linesmen oversee the game. When regulations are broken, they give free kicks and penalties. The player may be dismissed if they consistently violate the rules or commit a serious foul.