🧩 Level 7 - Puzzle #399
📊 Legend
⭐ Master
📝 172 Steps
🔧 9 Techniques
🎯 Current State
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🔧 Techniques Used
Subset Technique
59×
Hidden Single
47×
Pointing/Claiming
35×
Trial & Error
12×
XY-Wing
6×
Forcing Chain
6×
Naked Single
4×
Inferred
2×
ALS-XZ
1×
📋 Solution Steps
All
Singles
Locked
Subsets
Fish
Wings
Chains
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