ā 180Ā° Rotational Symmetry: Every puzzle exhibits perfect symmetry - if a clue appears at position (row, col), another appears at (8-row, 8-col). This is the hallmark of professionally crafted puzzles.
ā Unique Solution Guarantee: Each puzzle has exactly one solution, verified mathematically with constraint propagation optimization. No reader frustration.
ā Technique-Based Difficulty: Easy puzzles solvable with naked singles only. Medium/Hard require advanced techniques. Clue density: Easy (38Ā±2), Medium (30Ā±3), Hard (24Ā±3).
ā Step-by-Step Solution Viewer: Navigate through each solving step forward (Next/ā) or backward (Back/ā). Green highlights show placements, red shows backtracking. Perfect for verification or creating tutorials.
ā Intelligent Retry Logic: Generator attempts up to 10 variations to hit exact target clue counts and difficulty levels.
ā Newspaper Quality: Serif fonts, professional grid styling, and date watermarks for authenticity.