Logic Masters Deutschland e.V.

The final boss of my series of Infinity Loop puzzles. If you're new to the genre, try the introduction puzzles to get familiar with the infinity loop grid and learn some basic tricks: intro 1, intro 2. Also, check out Raumplaner's puzzle!

Solve online: link (PuzzleTV)
Solve on paper:


Rules:
Standard kropki dots, no negative constraint. Digits on a white dot must be consecutive. Digits on a black dot must be in a ratio of 1:2 (i.e. one is twice another).

Infinity loop rules apply:

• The puzzle consists of a series of rings, placed in such a way that each ring has one adjacent neighbor ring on the inside and on the outside.
• Place the digits 1-6 in such a way that no digit is repeated in a row, column, or quadrant of any two adjacent rings.
• The larger cells on the outside are part of both rows/columns of the inner ring if they are adjacent to a cell of the inner ring.
  
• A quadrant consists of three cells that form a corner of the outer ring with the adjacent cells of the inner ring (six cells in total).
  
• All rings form a loop, i.e. the outermost ring connects to the innermost ring.
• For online solvers: you can navigate through the layers of rings by zooming in (+) or out (-).

Solution code: Digits of the first and the last columns of the outermost ring (8 digits, no spaces). If solving online, the circles in the middle of the grid indicate what is the current ring: click on the first circle to reset the grid to the initial position (which is relevant for the solution code)