Offside
The provision as it is printed, and everything on Ruleside that turns on it.
An attacker in an offside position (B) is penalised for playing or touching the ball that rebounds or is deflected from a deliberate save by a player from the defending team (C), having been in an offside position when the ball was last touched or is played by a team-mate.
Worked by IFAB itself 1
One of the positions the Laws answer by name rather than by rule, drawn.
The Laws of the Game are published by The IFAB and quoted here for the purpose of explaining the decisions on this site. Ruleside is not affiliated with The IFAB or FIFA. Every clause of Practical guidelines for match officials that Ruleside cites.