Put the numbers 1 through 7 into the hexagonal cells so that every line (of any length) and every zone of 7 cells marked by the rings contains every digit not more than once.

Example:

Puzzle:

Put the numbers 1 through 9 into the hexagonal cells so that every line (of any length) contains every digit not more than once. The lines must contain consecutive numbers, i. e., if a line has five cells there can be 2, 3, 4, 5, 6 or 3, 5, 4, 2, 6 but not 3, 4, 1, 9, 8 in the cells.

Smaller example with the numbers 1 through 6:

Puzzle:

Put the numbers 1 through 9 into the hexagonal cells so that every line (of any length) contains every digit not more than once. If the difference between two cells is 1 then there is a white dot. If digit in a cell is the half from a neighboring cell then there is a black dot. If there is no dot then neither the difference is 1 nor one cell the half of the other. The dot between two cells with 1 and 2 can have any of these two colors.

Smaller example with the numbers 1 through 6:

Puzzle:

Put the numbers 1 through 7 into the hexagonal cells so that each of 7 large hexagons and every line (of any length) contains every digit not more than once.

Put the numbers 1 through 7 into the hexagonal cells so that each of 7 large hexagons and every line (of any length) contains every digit not more than once.

Put the numbers 1 through 7 into the hexagonal cells so that every line (of any length) contains every digit not more than once.

Put the numbers 1 through 7 into the hexagonal cells so that every line (of any length) contains every digit not more than once.

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

Fill in the grid so that every row, every column and every marked 2 x 2 box contains the digits 1 through 8. In each cell the upper left triangle contains a digit that is less then the digit in the lower right part of the same cell.