Logic Masters Deutschland e.V.

• Irregular 10-sudoku rules apply: place the digits 0 to 9 once each in every row, column and region.
• Cells one chess knight move apart may not contain digits in 1:2 ratio.
• Digits joined by a black dot are in 1:2 ratio and digits joined by a white dot are consecutive. Not all possible dots are given.

Online in Sudokupad

See also:

• knights in not black satin
• schemenkraft
• zerrwelt
• Coyolxauhqui
• Huitzilopochtli