Sudoku 129 Better -

The number 129 can be interpreted in several ways:

When you look at a row, don’t just see empty cells. See a permutation of 1..9. Ask: Which three numbers are missing? Then check which columns they can go into. sudoku 129 better

Use the dedicated spaces for date and time to track your solving speed as you implement new strategies. The number 129 can be interpreted in several

: Programs like HoDoKu offer an "Extended Print" option specifically for pen-and-paper solvers who want demanding puzzles in newspaper-style layouts. sudoku 129 better