81 boxes to fill with numbers from 1 to 9. The essential rule is that each number can only appear once in the same column and row. This is the basic principle of Sudoku, a classic game to pass the ...

Nevada County Sudoku Society’s transition from teaching Sudoku to local children to now teaching Sudoku in free classes for seniors is complete. All beginning and intermediate Sudoku solvers are ...

“Education is not the learning of facts. It’s rather the training of the mind to think.” — Albert Einstein Most homeschooling parents have trouble keeping their very active children involved in ...