Sudoku | 129 [2021]

(dotted lines) where the numbers must sum to a specific total. Diagonal Sudoku (X-Sudoku) : The "Sudoku Primer 129" series often focuses on Diagonal Sudoku

Shaded squares must contain even numbers; shaded circles must contain odd numbers. Advanced Solving Strategies sudoku 129

• If a candidate in a block is confined to one row or column, eliminate that candidate from the same row/column outside the block.

2. The Mathematical Curiosity: The Power of 3, 4, and 129

There is a fascinating mathematical footnote in Sudoku history involving the numbers 3, 4, and 129. (dotted lines) where the numbers must sum to

Basic Strategies for Sudoku 129