Logic Masters Deutschland e.V.

Rules:

Normal sudoku rules apply.

Disjoint groups: Cells with the same position within the boxes contain all the numbers from 1 to 9.

[Rust] Thermometers: Numbers on a thermometer strickly increase as they move away from the bulb.

[Tarnish] Entropic line: Every 3 consecutive cells along an entropic line must contain a low digit (1,2,3), middle (4,5,6), and a high (7,8,9).

[Patina] Lockout line: Digits along a lockout line must not be between the digits on the "rhombused" ends of the line, which have a difference of at least 4.

Puzzle:

Hope you won't corrode while solving this!