🧩 Level 4 - Puzzle #123
📊 Professional
⭐ Hard
📝 76 Steps
🔧 5 Techniques
🎯 Current State
Loading grid...
← Previous
Step 0 / 76
Next →
🔧 Techniques Used
Hidden Single
55×
Pointing/Claiming
10×
Naked Triple
5×
ALS-XZ
4×
Naked Quad
2×
📋 Solution Steps
All
Singles
Locked
Subsets
Fish
Wings
Chains
Expand All
Collapse All
Loading steps...
← Previous
Level 4 Index
Next →