Logic Masters Deutschland e.V.

Inspired by a test puzzle of RockyRoer and a conversation with XeonRisq.

Rules

Japanese Sums: Shade some cells in the grid and place digits from 1-9 into each unshaded cell such that no digit repeats in any row/column. Clues outside the grid show the sums of digits in contiguous unshaded cells in the respective row/column in order from the left/top to right/bottom.
Cave: All unshaded cells must be orthogonally connected. Shaded cells must connect orthogonally to the edge of the grid.
Invisible Renban: Every row/col must be a set of consecutive digits in any order.

Link

Sudokupad