Logic Masters Deutschland e.V.

Rules:

• Normal Sudoku rules apply, box/region shapes are irregular
• Normal killer cages (no repeats in cages and entries sum to small number in the top left)
• Normal XV rules (cells connected by X or V sum to 10 or 5 respectively, not all X nor V are given)
• Normal arrow rules (digit in the circle end of an arrow is the sum of all digits on the arrow)
• The shaded region where region 5 would be in a regular sudoku is an extra region, ie. there is a set of digits 1-9 in that region
• Anti-knight constraint (two cells that see each other by a chess knight's move may not contain the same digit)
• Normal Kropki dots (cells connected by a white kropki dot contain consecutive digits, cells connected by black dots are in a ratio of 1:2, not all kropki dots are given)