Betafish.js

What is Betafish.js?

Betafish.js is an open-source chess AI with a user-friendly interface. It is designed for chess players who want a challenging opponent and a smooth game experience. The AI’s thinking time can be set from 1 to 10 seconds per move, so you can play quick games or take more time for strategic play.

The tool includes practical features for playing and analyzing chess:

• Copy or set the board using Forsyth-Edwards Notation (FEN) to save games or practice specific positions.
• Reset the game to start over.
• Take back moves to explore different lines.
• Flip the board for a different view.
• View and contribute to the source code, credited to creator Gavin.

Who created Betafish.js?

Gavin created Betafish.js as a dedicated chess AI. The project is open source, and the interface is built to make it easy to jump into a game, adjust the AI’s thinking time, and use FEN for analysis or setup.

What is Betafish.js used for?

Betafish.js is used for playing chess against an adaptive AI opponent, practicing positions with FEN setup, and analyzing games by copying FEN data. Its adjustable thinking time and move take-back options make it useful for both casual play and strategy development.