🧩 Level 4 - Puzzle #191
📊 Professional
⭐ Hard
📝 73 Steps
🔧 8 Techniques
🎯 Current State
Loading grid...
← Previous
Step 0 / 73
Next →
🔧 Techniques Used
Hidden Single
47×
Pointing/Claiming
13×
XY-Wing
3×
X-Wing
3×
Naked Pair
2×
Naked Triple
2×
ALS-XZ
2×
Naked Single
1×
📋 Solution Steps
All
Singles
Locked
Subsets
Fish
Wings
Chains
Expand All
Collapse All
Loading steps...
← Previous
Level 4 Index
Next →