There is a 'Sudoku variant' called Samurai Sudoku, consisting of five overlapping 9×9 grids sharing corner boxes.
There is a 'Sudoku variant' called Samurai Sudoku, consisting of five overlapping 9×9 grids sharing corner boxes.
"In mathematics the art of asking questions is more valuable than solving problems." — Georg Cantor
"In mathematics the art of asking questions is more valuable than solving problems." — Georg Cantor