🧩 Level 4 - Puzzle #213
📊 Professional
⭐ Hard
📝 75 Steps
🔧 7 Techniques
🎯 Current State
Loading grid...
← Previous
Step 0 / 75
Next →
🔧 Techniques Used
Hidden Single
54×
Pointing/Claiming
9×
Naked Triple
5×
ALS-XZ
3×
XYZ-Wing
2×
Turbot Fish
1×
Naked Single
1×
📋 Solution Steps
All
Singles
Locked
Subsets
Fish
Wings
Chains
Expand All
Collapse All
Loading steps...
← Previous
Level 4 Index
Next →