Fillomino: Divide the grid into orthogonally connected regions such that no two regions of the same size share an edge, and enter a number into each cell equal to the size of its region. Cave: Shade some cells in the grid such that all unshaded cells are orthogonally connected, and all shaded cells are orthogonally connected by other shaded cells to an edge of the grid. Each region must either be entirely shaded or entirely unshaded. If a clued cell is unshaded, the clue indicates the sum of numbers seen orthogonally from that cell; region borders block vision. If a clued cell is shaded, the clue indicates the total sum of numbers in its group of orthogonally connected shaded cells (which could include more than one region).