🧩 Level 4 - Puzzle #169

📊 Professional ⭐ Hard 📝 74 Steps 🔧 5 Techniques

🎯 Current State

Loading grid...

🔧 Techniques Used

Hidden Single 51×
Pointing/Claiming 10×
Naked Quad 9×
Naked Pair 3×
Naked Single 1×

📋 Solution Steps

Loading steps...