BitShogi - "The Game of Generals"

BitShogi, playing a little bit every day using bitboards.

Play at bitshogi.com

Hi, I’m working on a chess-like game engine implemented in Julia. Credit for getting all the UI design done goes to Claude. Now that its playable, I’m working on creating a bot that can beat me. If you want to contribute or have any ideas or comments then open an issue or make a pull request. Thank you.

Roadmap

• A bot that can beat me: NNUE, RL, Transformer, minimax - CURRENT TASK

Some Resources I’ve found along the way

• Shogi Rules: Wikipedia - Minishogi | Shogi Harbour
• Chess & Bitboards: Chess Programming Wiki - Bitboards
• Protocols: USI (Universal Shogi Interface) Protocol
• Engine Dev: Computer Shogi Association
• ML Chess: Mastering Chess with a Transformer Model
• Shogi SFEN Notation: Shogi_Evaluation_Function_Using_Genetic_Algorithms

Project Structure

• BitShogi/src: Core game logic (Julia). Implements bitboards, move generation, and validation.
• BitShogi/server: REST API server handling game state and bot moves.
• BitShogi/frontend: Interactive web interface for playing against the engine.
• Shogi_lean: Formal verification and proofs of game logic. Just to practice my lean.

Tech Stack

• Engine: Julia 1.11 (HTTP.jl, JSON3.jl)
• Frontend: React + TypeScript (Vite)
• Verification: Lean 4
• Infrastructure: Docker, Railway (backend), Vercel (frontend)
• SVG file design website

Tip

Run loadRandomPuzzle() in the console for another puzzle.