Logic Masters Deutschland e.V.

Following on from my previous lockout lines puzzle, here's another one that I made a long time back, with a little tweak to update it. Not too hard, but a little trickier than the last one, so please enjoy.

The Rules:

• Normal Sudoku rules apply.
• Normal lockout line rules apply. Digits in diamonds directly connected by a lockout line must differ by 4 or more. Digits on a line must be different from those in the diamonds, and must fall outside the range defined by their diamonds. Digits on a line may repeat if allowed by other rules.
• Digits separated by a black dot must have a ratio of 2:1. Not all possible black dots are necessarily given.
• Digits in a grey circle must be odd.

  

  Link for solving on Sudokupad