Logic Masters Deutschland e.V.

For turn 2 of The Skunkworks League we were tasked to create a puzzle with two grids that aren't the same size or shape and needed to interact throughout the puzzle. The original puzzle I turned in was non-unique but still performed very well so I decided to fix the ending and publish. Enjoy!

Rules

Left Grid

Heyawake - Clues in the grid represent the amount of shaded cells in their region. Shaded cells must not be orthogonally adjacent but may be diagonally adjacent. All unshaded cells must form one orthogonally connected area. Unshaded cells in a row or column must not pass over two (or more) region borders without being interrupted by a shaded cell.

Summation Rollerbahn - Draw a totally connected loop network that travels orthogonally through the center of all unshaded cells. The loop network may cross and branch but must not have any dead ends. Assign a value to each cell as follows: 0=Unvisited, 1=Turn, 2=Straight, 3=Branch, and 4=Crossing. Clues outside the grid represent sums of contiguously connected segments of loop moving towards the clue in that row or column. Separate sums in the same row or column are in order of appearance. An asterisk outside the grid can represent zero, one, or more clues. Clues marked E are an even sum. Clues marked O are odd. Both E and O clues can be either single digit or double digit, but the one clue marked? O must be double digits. Clues marked? sum to a single-digit non-zero number while clues marked ?? sum to a double digit number which cannot have a leading zero. See example image below for a visual of how Summation Rollerbahn rules work. There is also a link to the solvable grid.

Right Grid

Pentominous - Divide the grid into five-cell regions so that every cell is part of a region. Regions of the same shape may not share an edge (including rotations and reflections). Some region borders have already been given. All "?" in the grid represent a different region, although not necessarily a different shape.

Interaction

Banks - Each pentomino follows normal pentominous lettering conventions (see reference in the bottom left of the puzzle). For each cell a pentomino type occupies add 1 point to that letter's bank (each pentomino placed will give 5 pts to its letter). All clues in the left grid must use at least 1 point from its letter's bank. All banks must be fully depleted by the end of the puzzle. If a clue has two letters separated by a "/" you must determine which bank to use. See below image for a visualization of how the bank rule works as well as the link to the working example puzzle. Heyawake has been removed from the example and it is tetrominous instead of pentominous.

Main Puzzle