🧩 Level 4 - Puzzle #138
📊 Professional
⭐ Hard
📝 69 Steps
🔧 6 Techniques
🎯 Current State
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🔧 Techniques Used
Hidden Single
52×
Pointing/Claiming
8×
ALS-XZ
4×
Naked Triple
3×
XY-Wing
1×
Naked Single
1×
📋 Solution Steps
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Singles
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Wings
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