About This Lesson
<p>In this Sudoku, there are three colored “islands” in the 9x9 grid. Within each “island” EVERY group of nine cells that form a 3x3 square must contain the numbers 1 through 9.</p>
Share
Share
Share
<p>In this Sudoku, there are three colored “islands” in the 9x9 grid. Within each “island” EVERY group of nine cells that form a 3x3 square must contain the numbers 1 through 9.</p>
A great logic puzzle