🧩 Level 4 - Puzzle #064
📊 Professional
⭐ Hard
📝 83 Steps
🔧 5 Techniques
🎯 Current State
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🔧 Techniques Used
Hidden Single
53×
Pointing/Claiming
17×
Naked Quad
6×
Naked Pair
5×
ALS-XZ
2×
📋 Solution Steps
All
Singles
Locked
Subsets
Fish
Wings
Chains
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