chess960 1.0.1

Chess960.dart is a fork of the chess.dart package. A library for legal chess960 move generation, maintenance of game state, and conversion to and from the FEN and PGN formats.

chess960.dart

chess960.dart is based on chess.dart, with some light modifications to adapt it to Chess 960 rules.

It handles legal chess move generation, maintenance of chess game state, and conversion to and from the FEN and PGN formats. It has no external dependencies.

A Random Game

import "package:chess960/chess960.dart";

void main() {
  Chess960 chess = new Chess960();
  while (!chess.game_over) {
    print('position: ' + chess.fen);
    print(chess.ascii);
    var moves = chess.moves();
    moves.shuffle();
    var move = moves[0];
    chess.move(move);
    print('move: ' + move);
  }
}

Documentation

The chess.js documentation is largely relevant, but see also the docs on pub.dev

Versioning

Dart 2 is required.

Testing

The test directory contains tests.dart which is a port of chess.js's unit tests. The program random.dart plays a random game of chess. ai.dart is an example of a simple 4 ply alpha beta search for black (yes a simple chess-playing program) that uses a purely material evaluation function (it is rather slow). You can run the unit tests using pub:

pub get
pub run test/tests.dart

And you can also run performance tests.

pub run test/perft.dart

And, finally you can run the simple AI:

dart test/ai.dart

Links

• chess.dart
• chess.js
• Wikipedia's Article on FEN Format
• Wikipedia's Article on PGN Format