Diagonal Sudoku also called Sudoku X.The puzzle is a 12x12 grid made up of 4x3 subgrids (called "regions").Some cells already contain numbers, known as "givens"

Diagonal Sudoku also called Sudoku X.The puzzle is a 12x12 grid made up of 4x3 subgrids (called "regions").Some cells already contain numbers, known as "givens"

Diagonal Sudoku also called Sudoku X.The puzzle is a 12x12 grid made up of 4x3 subgrids (called "regions").Some cells already contain numbers, known as "givens"

Diagonal Sudoku also called Sudoku X.The puzzle is a 12x12 grid made up of 4x3 subgrids (called "regions").Some cells already contain numbers, known as "givens"

Diagonal Sudoku also called Sudoku X.The puzzle is a 12x12 grid made up of 4x3 subgrids (called "regions").Some cells already contain numbers, known as "givens"