Sachsentext
Divide the grid into areas of 4 cells and color them with the colors red, blue and yellow. Areas of the same color may only touch each other at the vertexes. The color on the borders is the color that comes if we mix the colors of the neighbouring cells. Here red and blue becomes purple, red and yellow becomes orange and yellow and blue becomes green.
Example:
Puzzle:
Divide the grid into areas of 4 cells such that each piece contains exactly one small blue piece with a form that is not placeable in this piece (if magnified).
Example:
Puzzle:
Divide the grid into areas of 4 cells such that each piece contains exactly one small blue piece with a form that is not placeable in this piece (if magnified).
Example:
Puzzle:
Fill in the grid so that every row, every column and 3x3 box contain the digits 1 through 9. All knights attack at least one other cell with the same number in the chess knight distance. The numbers at the left and at the top are the sum of cells with a knight.
Smaller Example:
Puzzle:
Fill in the grid so that every row, every column and 3x3 box contain the digits 1 through 9. All knights attack at least one other cell with the same number in the chess knight distance. The numbers at the left and at the top are the sum of cells with a knight.
Smaller Example:
Puzzle:
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:
