Logic Masters Deutschland e.V.

X Skeleton Pentominoes

Normal sudoku rules apply.

Adjacent cells connected with an X must sum to 10.

Shade some cells such that the resulting pattern is 90-degree rotationally symmetric. For example, if r3c1 is shaded, then so are r1c7, r7c9, and r9c3.

The unshaded region must contain one each of the twelve standard pentominoes (no repeats by rotation or reflection).

Each pentomino encloses exactly one given digit and one X.

The arrangement of pentominoes must be deduced.

Digits do not repeat within a pentomino.

This puzzle was made in homage to Blobz.