🧩 Level 4 - Puzzle #277
📊 Professional
⭐ Hard
📝 73 Steps
🔧 6 Techniques
🎯 Current State
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🔧 Techniques Used
Hidden Single
51×
Pointing/Claiming
12×
Naked Pair
5×
Naked Quad
2×
Naked Single
2×
Naked Triple
1×
📋 Solution Steps
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