This basic Chess game is a humble tribute to famous Chess player Robert James "Bobby" Fischer, World Chess Champion.
Note that the author does not agree with Fischer's political and religious opinions, but remains a fan of his genius at Chess.
Note: requires Java 11
If you are interested in how this engine works, please have a look at those two articles by the author:
- Implementing a Chess engine from scratch
- Enhancing a Java Swing App to a clean, elegant Web App without changing the code
- If not already done, you can install OpenJDK 11 for free (see the excellent distributions of AdoptOpenJDK)
- Download the latest release JAR
- Then launch the downloaded JAR
java -jar bobby-0.1.jar
- Checkout the code
- Build it with maven
mvn package -Dmaven.test.skip=true - Launch the created JAR
java -jar target/bobby-1.0-SNAPSHOT.jar
Open https://www.bobby-chess.com/bobby/ for a browser version of the game (limited to one single user at a time).
- AI with multiple strength level, from random-stupid to 3-depths computation, using a minimax algorithm
- All moves implemented
- Change GUI view according to selected color
- Draw proposals
- Undo last move
- Suggest move
- Usage of 15+ famous openings
- Limit computation time to n seconds
- Save game to and load from text files with basic notation
- Load PGN file
- AI is as arrogant as the real Bobby was 😄
- Uses Java 11
- Ability to use bundled light JRE (doc here)
- Strong code coverage, incl. GUI testing
- Code style with Checkstyle, code quality with SpotBugs and SonarSource
- Pipeline with TravisCI
- Uses a nice modern Look & Feel FlatLaf for all platforms
- Uses free font FreeSerif in order to have a nice rendering of chess pieces
The implemented AI works uses a depth-first computation, which means that if the computation time is restricted, it may not evaluate every single possible move: it evaluates as deep as possible a first move, then a second, etc, but has no guarantee to cover every move of the first depth.