🧩 Sudoku Solver with Stackful Coroutines

💡 The Power of Stackful Coroutines

Watch recursive backtracking solve Sudoku step-by-step in real-time. The algorithm tries numbers, recurses deeper, and backtracks when hitting dead ends.

🔥 Why This Is Nearly Impossible Without Coroutines:

• Deep Recursion: Up to 81 levels deep—manually tracking this state requires complex data structures
• Backtracking Through Call Stack: The algorithm unwinds through multiple recursive calls naturally
• No Pause Points: You can't just "stop" in the middle of recursion and resume later

✨ The Cortex Solution:

Just add ctx.Suspend() anywhere in your recursive function! The algorithm pauses, yields control to the browser for visualization, then resumes exactly where it left off—preserving the entire call stack naturally.

Result: Clean, readable recursive code (just like in textbooks) with real-time visualization. No state machines, no callback hell, no refactoring required!