# Now you're Packing with Portals #2: Hashtag

Place the colored shapes into the white area, without rotations or reflections, so that they fill it perfectly. The gray walls don't just block shapes, though - they act as portals!

When you place a shape, it has to stay in one piece, connected as it was before. However, cells separated by a gray wall are still connected - the shape stretches across the wall as if it had no thickness. The edge of the board also wraps around, so a piece that sticks off the right side reappears at the left, and so on.

This puzzle has only one solution. Good luck finding it!

Here are some examples of valid and invalid placements. This U-shaped piece can easily warp across a single gray wall:

This O-shaped shape can't be placed in the same way, since that would break it:

• I'm very happy with the improved description. I thought the wording in the previous puzzle was alright, but this is undeniably clearer. (Also, the puzzle is nice!) Jan 29, 2021 at 14:51

I think the answer is (each color marked as x/y/z, where X/Y/Z marks the top left cell of each piece so that you can follow the warps from there)

  y   y
X y z z z
x   x
x x Z x z
Y   y

• That's right! Clearly, I have to make these harder... But don't worry, I have plans ;) Jan 29, 2021 at 5:34
• @Woofmao This one definitely wasn't easy, and we all know that polyomino packing puzzles can be made arbitrarily hard :) Also, nice job with the piece design, especially the partially cut pieces which give much more freedom in warping grids. Jan 29, 2021 at 6:33
• Here's an "original art" diagram of this solution: i.stack.imgur.com/nnqLZ.png Jan 29, 2021 at 14:46

It can be solved as follows

With

the letters showing the starting positions