what is swiftchess fr?

SwiftChess is a ready-to-use chess engine written in Swift. It handles all the underlying logic you need to build a working chess game, from validating legal moves to providing a computer opponent with three difficulty levels. Instead of starting from scratch to figure out how pieces move or how to detect checkmate, you can drop this into your app and focus on building the visual experience. At a high level, the engine manages the game board, the players, and the rules. You can create games with human players, AI players, or a mix of both. When a human makes a move, you pass their action to the engine, which checks if it is legal. For AI turns, you simply tell the engine to calculate a move, and it does so asynchronously so your app does not freeze while the computer thinks. The engine then sends callbacks to your app about what happened, such as a piece moving, a piece being captured, or a game ending in checkmate. It also supports advanced chess rules like castling, en passant, and pawn promotion. This project is built for iOS developers who want to add a chess game to their application. For example, if you are building a mobile puzzle app, a multiplayer game, or just a standalone chess application, you would use this to manage the actual gameplay. The project does not include a user interface, but it comes with an example project showing a complete touch-based UI. You can use that example as a starting point or build your own custom interface. One practical feature is that the entire state of a game can be saved into a simple dictionary format. This means you can easily add a "save game" feature, allowing players to close your app and resume their match later. You could also send this saved state over a network if you wanted to build a multiplayer experience.