🧩 Level 7 - Puzzle #021
📊 Legend
⭐ Master
📝 104 Steps
🔧 10 Techniques
🎯 Current State
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🔧 Techniques Used
Hidden Single
44×
Pointing/Claiming
19×
Forcing Chain
12×
ALS-XZ
8×
Naked Single
6×
Naked Quad
6×
XY-Wing
5×
Trial & Error
2×
Naked Pair
1×
Inferred
1×
📋 Solution Steps
All
Singles
Locked
Subsets
Fish
Wings
Chains
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