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Fill the grid with numbers 1 through 9. In no row, column and none of the drawn diagonals is reapeated any number.

Smaller Example:

Puzzle:

Place numbers 1 to 4, each once, in only white cells of each row and column. Numbers in gray cells are sum of orthogonally adjazent white cells.

Puzzle:

Place the letters A, B and C in the grid. The letters on the edge are informations about the arrangement of the row or column. Repeated letters are given only as single letters. If a line is AABBA , then, for example, ABA is at the edge. The question marks indicate that we do not know which letter is at this place.

Example:

Puzzle:

Place the letters A, B and C in the grid. The letters on the edge are informations about the arrangement of the row or column. Repeated letters are given only as single letters. If a line is AABBA , then, for example, ABA is at the edge. The question marks indicate that we do not know which letter is at this place.

Example:

Puzzle:

Place the letters A, B and C in the grid. The letters on the edge are informations about the arrangement of the row or column. Repeated letters are given only as single letters. If a line is AABBA , then, for example, ABA is at the edge. The question marks indicate that we do not know which letter is at this place.

Example:

Puzzle:

Each of the four-field areas holds one of the right sets. None set occurs twice. The signs indicate the subset relations. All subset relations between orthogonal neighboring sets are given.

Example:

Puzzle:

Each of the four-field areas holds one of the right sets. None set occurs twice. The signs indicate the subset relations. All subset relations between orthogonal neighboring sets are given.

Example:

Puzzle:

Each of the four-field areas holds one of the right sets. None set occurs twice. The signs indicate the subset relations. All subset relations between orthogonal neighboring sets are given.

Example:

Puzzle:

Fill the cells (big circles) of the grid with the numbers 1 though 9. On no straight line (with 2 - 9 cells) there can be any number repeated.

If there is between neighboured cells a line with a white dot, then the difference between the numbers in these cells is 1. If there is between neighboured cells a line with a black dot, then one number is the half from the other. The dot between two cells with 1 and 2 can have any of these two colors.

If there is a line without a small dot between two cells then neither the difference is 1 nor one cell is the half of the other.

Fill in the cube so that every outlined region and every layer (as shown by the double arrows) contains the digits 1 through 8.

Puzzle: