There is just one solution for the first 3 moves - provided you let white start. Educated solvers will generally assume that white starts when the coordinates show white started the game from the bottom.
You made an "error" in the FEN (where black starts) but it does not really matter as long as no text specifies anywhere which side starts! I hope that's clear since chess.com's puzzling rules are rather confusing.
So it's not an anti-puzzle.
It's black to play
It's black to play
First, If it is, you need to specify it in text as solvers are not supposed to read out the FEN or analyze with an engine. Second, you just destroyed a perfectly sound puzzle
If it were white to play in this position, then it'd be a typical puzzle.
If it were white to play in this position, then it'd be a typical puzzle.
Yes! It's not an achievement to create a puzzle with multiple solutions. When you drop a random bunch of pieces on a chessboard it is commonly either "no win" or "multiple wins". The art of creating a puzzle is to narrow it to precisely one solution. And the challenge for the solver is to find it. He has no clue what is expected of him in this "(anti-)puzzle".
Check out this puzzle with multiple solutions. Perhaps you could call it an "anti-puzzle". [Edit on 9/28/2023 at 2:43 PM EST: It is black to play]