This 3D nonogram has clues with two possible colors, gray and black. Cells that are neither (typically labelled with an "x" when solving) are left as white... so technically there's three colors I guess.
Important rules to keep in mind:
- There does NOT need to be a gap between black and gray cells
- If there is nothing written for the clue, that means it is unknown
- Every given clue is complete. I cannot provide "just the gray numbers" of a clue, for example.
The following are the 8 horizontal slices of the cube, numbered 1 thru 8. 1 is the top and 8 is the bottom.
The following is the "z-plan" which are clues that run vertically. If the top-left cell of the "z-plan" had the clue " 6 1 ", then we could conclude (per normal nonogram rules) that the top-left cell of the first 6 layers are black, the same cell is blank on layer 7, and that cell is black on layer 8.
I must confess that I am bad at making nonogram puzzles and that this one is not properly constrained. In other words, there are MANY ways to fill the cells that still satisfy the clues. However, among those solutions, one is more right than the others. Can you spot it?
P.S. If you think there's an error, please check your own work before asking. I have intended that this puzzle be printable in black-and-white and also perfectly solvable on that sheet of paper. You are welcome to change gray and black to whatever color highlighters you own.