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Fill in the grid so that every row, every column, and every colored region contains the digits 1 through 8 at most once.

Fill in the grid so that every row, every column, and 3x3 box contains the digits 1 through 9. In the marked diagonals all digits must be different.

Fill in the grid so that every row, every column, and 3x3 box contains the digits 1 through 9. In the marked diagonals all digits must be different.

Fill the grid with the letters A, B and C. Each row and column has exactly one of each letter digit and 2 empty cells. The clues along the edges tell you which digit you can see from that vantage point.

Fill in the grid so that every row, every column, every 4 x 2 box and both main diagonals contain the digits 1 through 8. The sum of the digits within each sub-region is equal to the specified number. No digits can be repeated in any cage.

Fill in the grid so that every row, every column, and every 3 x 3 box contains the digits 1 through 9. The sum of the digits within each sub-region is equal to the specified number. No digits can be repeated in any cage.

Every bold outlined section must contain the consecutive integers from 1 to the quantity of cells in that section inclusive.

If two identical numbers appear in the same row or column, at least that many cells with other numbers must separate them. For example, two cells both containing '1' may not be orthogonally adjacent, but must have at least one cell between them with a different number. Two cells marked '2' in the same row or column must have at least two cells with other numbers between them in that row or column, and so on.

Every bold outlined section must contain the consecutive integers from 1 to the quantity of cells in that section inclusive.

If two identical numbers appear in the same row or column, at least that many cells with other numbers must separate them. For example, two cells both containing '1' may not be orthogonally adjacent, but must have at least one cell between them with a different number. Two cells marked '2' in the same row or column must have at least two cells with other numbers between them in that row or column, and so on.

Divide the grid into rectangular and square pieces such that each piece contains exactly one number, that each cell is part of one piece and that number represents the sum
of the width and height of the rectangle.

Example:

Puzzle:

Divide the grid into areas of 4 cells and fill the cells with the numbers 1 through 4 such that each if you read from the top to the bottom and from the left to the right in each area is each number and these numbers have the order 1 - 2 - 3 - 4.

Example:

Puzzle: