Fill in the digits 1 to 6 in the empty cells so that around each black field each digit occurs exactly once. Digits in neighbouring cells must be different.

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. 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 6 into the hexagonal cells so that every line (of any length) contains every digit not more than once. The numbers around the grid are the sum in the direction of the arrows.

Smaller example with the numbers 1- 4:

Puzzle:

Put the numbers 1 through 6 into the hexagonal cells so that every line (of any length) contains every digit not more than once. The numbers around the grid are the sum in the direction of the arrows.

Smaller example with the numbers 1 through 4:

Puzzle:

Put the numbers 1 through 6 into the hexagonal cells so that every line (of any length) contains every digit not more than once. The numbers around the grid are the sum in the direction of the arrows.

Smaller example with the numbers 1 through 4:

Puzzle:

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.