Logic Masters Deutschland e.V.

Thank you bellsita, jennyaa, and Piatato for testing!

Twilight Cave:
• Shade some cells of the grid such that all unshaded cells are connected and all shaded cells are connected to the edge of the grid.
• A clue in an unshaded cell counts the unshaded cells that can be seen from that cell horizontally and vertically, including the cell itself, where shaded cells block vision.
• A number in a shaded cell counts the number of shaded cells in that orthogonally connected group of shaded cells.
• For clarity, a group of shaded cells may contain any number of clues, including none.

Letters:
• Each letter must represent the same number every time it appears. Different letters are not necessarily different numbers.