Fill in the grid so that every row, every column and the 3x3 boxes contain the digits 1 through 9. All eight green lines must use no more then four digits. Each line must use three of these digits. All yellow cells must contain odd digits.

Fill in the grid so that every row, every column and the 3x3 boxes contain the digits 1 through 9. All eight green lines must use no more then four digits. Each line must use three of these digits.

Put the numbers 1 through 6 into the triangular cells so that every line (in three directions) contains every digit not more than once.

Put the numbers 1 through 6 into the triangular cells so that every line (in three directions) contains every digit not more than once.

Put the numbers 1 through 6 into the triangular cells so that every line (in three directions) contains every digit not more than once.

Put the numbers 1 through 8 into the triangular cells so that every line (of any length, in three directions) and every of the four marked smaller diamonds contains every digit not more than once.

Put the numbers 1 through 8 into the triangular cells so that every line (of any length, in three directions) and every of the four marked smaller diamonds contains every digit not more than once.

Put the numbers 0 through 9 into the triangular cells so that every line (of any length, in three directions) contains every digit not more than once.

Put the numbers 0 through 9 into the triangular cells so that every line (of any length, in three directions) contains every digit not more than once.