I’m gonna bore you now with an interesting story. I was chatting today with Deb Mohanty, and asked him to pick a number 1,2,3. 1 was a nothing-fancy-Slitherlink, 2 was some variation, 3 was this. He picked 3 and then I told him that it was for the puzzle to post here today. He then moved to another topic and asked me if I have any Tapa ideas. I found this funny, decided not to tell him and let him see for himself 😛 Although, like I told him, I don’t remember which variations have already been done, so I don’t know if this one already exists. Ah well, story done, on to the puzzle.
This is a Tapa–Slalom hybrid. The non-gate and non-circled numbers are Tapa clues which guide you to form a Tapa wall which also follows the rules of a closed Slalom loop, moving through the gates in order. Therefore there cannot be bits of the wall that are not strictly part of the loop, the loop can touch itself diagonally.
Here’s an example and its only solution to better illustrate this(well, either 4 can be a “?” and still have the same solution) :