Logic Masters Deutschland e.V.

This is easy to start but can be very tricky to finish, especially if you're unfamiliar with pentominos.

Normal Sudoku and Little Killer rules, XV pairs, German whispers. No negative constraint.

Place a pentomino in 8 of the 9 boxes, given the following constraints:

- No two pentominos may have the same shape, including rotation and reflection.

- Pentominos in orthogonally adjacent boxes must touch each other diagonally but not orthogonally. Pentominos in diagonally adjacent boxes may not touch.

- Green lines may touch the boundaries of pentominos but not cross them. Clarification: this rule means that within a box the cells on a green line are either all contained in the pentomino (if there is one) or they are all outside of it.

- All pentominos act as killer cages, summing to the same total throughout the grid. This total must be deduced by the solver.

Link to CtC app

Have fun!