🧩 Level 4 - Puzzle #197

📊 Professional ⭐ Hard 📝 70 Steps 🔧 5 Techniques

🎯 Current State

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🔧 Techniques Used

Hidden Single 51×
Pointing/Claiming 10×
Naked Quad 5×
XY-Wing 2×
ALS-XZ 2×

📋 Solution Steps

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