Logic Masters Deutschland e.V.

Rules:

·No Triple Evens:

No three consecutive cells in the same row or column may all be even numbers.
·Disjoint Groups:

Cells with the same position within the boxes contain all the numbers 1-9.
·Little Killers:

Digits along marked diagonals sum to the number indicated outside the grid.
·Sub-Sudoku:

Diamond cells form a 5×5 Irregular Sudoku with its irregular regions colored differently.
·Magic Square:

Box 5 is a Magic Square, i.e. every row, column and 3-cell diagonal within the box sums to 15.
·Quadruples/Doubles:

All digits inside a circle appear in at least one of the four/two surrounding cells.

Hints: