Question 1

Is Sage still maintained for Swift chess projects?

Accepted Answer

No, Sage is deprecated and no longer in active development. The author has shifted focus to Hexe, a Rust-based chess engine with a Swift wrapper, making Sage a legacy option.

Question 2

How do I generate all legal moves in Sage?

Accepted Answer

Use the `availableMoves()` method on a Game instance, which returns all legal moves for the current player, including special moves like en passant and castling, as detailed in the move generation section.

Question 3

Can Sage be used to build a chess AI?

Accepted Answer

Sage only generates legal moves and does not evaluate them, so it's not sufficient for AI on its own. You would need an additional engine like Hexe for position evaluation and decision-making.

Question 4

Sage vs Hexe: which is better for Swift chess programming?

Accepted Answer

Hexe is the successor, offering both move generation and evaluation, while Sage is deprecated. For new projects, Hexe.swift (the Swift wrapper) is recommended, though it requires Rust integration, unlike Sage's pure Swift approach.

Question 5

How to install Sage using Swift Package Manager?

Accepted Answer

Add the Sage package URL to your Package.swift with majorVersion 2, then import the Sage module. The README provides specific code snippets for integration across supported Swift versions.

Question 6

Does Sage support PGN file parsing for chess games?

Accepted Answer

Yes, Sage includes PGN parsing and exporting capabilities, allowing you to load and save chess games in the standard Portable Game Notation format, as highlighted in the features and usage sections.

Sage

What is Sage?

Overview

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Frequently Asked Questions