The swordfish rule on the one hand seems to require a hard copy and some study but on the other hand it seems intuitive that for very hard puzzles one must thread through possibilities and start over if they don't work out wherein the worksheets are helpful. Thanks Mark now we won't be without our sudoku if we have our computer hooked up.
Thanks to this Website (Mark)
I now get/print a daily sudoku puzzle from daily-sudoku.com
Thanks to this website.
I now get/print a daily sudoku puzzle from daily-sudoku.com
Intense Sudoku rule
The swordfish rule on the one hand seems to require a hard copy and some study but on the other hand it seems intuitive that for very hard puzzles one must thread through possibilities and start over if they don't work out wherein the worksheets are helpful. Thanks Mark now we won't be without our sudoku if we have our computer hooked up.