High-Performance Rubik’s Cube Solver with Rust, WebAssembly & Three.js

I built cube-solver-wasm, a web application that compiles a Rust implementation of Kociemba’s algorithm to WebAssembly, paired with a hardware-accelerated 3D viewer built with Three.js.

The live demo is available at dmachard.github.io/cube-solver-wasm, and you can check out the source code on GitHub.

Architecture Breakdown

To achieve a seamless user experience, the project separates heavy logic computation from user interface rendering:

graph TD
    UI[2D Painter / User Input] -->|Verify State| JS[Modular JavaScript Orchestrator]
    JS -->|Render Frame| Three[Three.js 3D Visualizer]
    JS -->|Solve Cube request| WASM[Rust WebAssembly Solver]
    WASM -->|Optimal move list| JS
    JS -->|Animate Slices| Three

1. The Core Solver (Rust & Wasm)

Rust provides memory safety and native-speed execution. By utilizing wasm-pack, the Rust implementation of Kociemba’s algorithm compiles down to a compact, highly optimized binary file. The orchestrator loads this module as an ES6 import, allowing instant function calls from JavaScript with negligible overhead.

2. The 3D Rendering (Three.js)

The cube is rendered as an interactive 3D object. Users can:

• Rotate the viewport to inspect faces.
• Trigger animations for slice rotations.
• Interact using mouse or touch controls.