🧩 Level 4 - Puzzle #311
📊 Professional
⭐ Hard
📝 66 Steps
🔧 6 Techniques
🎯 Current State
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🔧 Techniques Used
Hidden Single
50×
Naked Triple
7×
Naked Quad
3×
Pointing/Claiming
3×
XYZ-Wing
2×
Naked Single
1×
📋 Solution Steps
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Singles
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Wings
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