After each placement, rescan for hidden singles.
Snowman Sudoku: Logical Thinking - Perkins School For The Blind sudoku 129 better
Solving high-level puzzles like Sudoku 129 isn't just a hobby; it’s a brain workout. Research suggests: After each placement, rescan for hidden singles
: Highly recommended by the Reddit community for its minimalist design and lack of intrusive "hand-holding" features. Verdict: Is it "Better"? Sudoku Primer 129 - diagonal sudoku After each placement