🧩 Level 4 - Puzzle #201
📊 Professional
⭐ Hard
📝 71 Steps
🔧 3 Techniques
🎯 Current State
Loading grid...
← Previous
Step 0 / 71
Next →
🔧 Techniques Used
Hidden Single
55×
Pointing/Claiming
11×
Naked Quad
5×
📋 Solution Steps
All
Singles
Locked
Subsets
Fish
Wings
Chains
Expand All
Collapse All
Loading steps...
← Previous
Level 4 Index
Next →