First-move advantage in chess
In chess, there is a consensus among players and theorists that the player who makes the first move (White) has an inherent advantage, albeit not one large enough to win with perfect play. This has been the consensus since at least 1889, when the first World Chess Champion, Wilhelm Steinitz, addressed the issue, although chess has not been solved.
Source: Wikipedia — First-move advantage in chess (CC BY-SA 4.0)