Logic Masters Deutschland e.V.

This puzzle was set as part of Scojo's imposter prompt where I had to make a puzzle in the style of OddlyEven.

The puzzle OddlyEven set as themself can be found here. They decisively defended their name with this puzzle but I still had a blast trying to imitate their style. Go check them out, they have some amazing puzzles!

Isofill:

Divide the grid into ten regions, each with ten orthogonally connected cells. Every cell in a region must contain the same digit. All of the digits 0 to 9 must appear in the grid.

Modifiers:

One cell in each row, column and region is a doubler cell. Doubler cells have a value equal to twice their digit.

One cell in each row, column and region is a shrink cell. Shrink cells have a value equal to their digit minus one.

No cell is both a doubler and a shrink cell.

Arrows:

A value N in a cell with an arrow indicates that there is a straight line N cells long starting in the cell and extending in the direction of the arrow.

Ten Line: For grey arrows, this line acts as a ten line: It can be divided into one or more consecutive, non-overlapping sections, each of which contains values summing to ten.

Region Sum: For blue arrows, this line acts as a region sum line: Region borders divide the line into segments with the same sum of values. Each line must cross at least one region border.

Lines from different arrows may overlap. Each line is considered separately.

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