🧩 Level 4 - Puzzle #171

📊 Professional ⭐ Hard 📝 69 Steps 🔧 6 Techniques

🎯 Current State

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🔧 Techniques Used

Hidden Single 49×
Naked Triple 7×
Naked Single 4×
Naked Pair 4×
Pointing/Claiming 3×
Naked Quad 2×

📋 Solution Steps

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