🧩 Level 4 - Puzzle #066
📊 Professional
⭐ Hard
📝 79 Steps
🔧 9 Techniques
🎯 Current State
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🔧 Techniques Used
Hidden Single
54×
Pointing/Claiming
9×
ALS-XZ
6×
XY-Wing
3×
Naked Pair
3×
Naked Single
1×
2-String Kite
1×
Naked Triple
1×
Naked Quad
1×
📋 Solution Steps
All
Singles
Locked
Subsets
Fish
Wings
Chains
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