You can find more of my puzzles here.
The Oracle's Gambit - Mate in 1

Hi everybody. Today I present a simple 1-move-puzzle I very much enjoyed constructing. Don't let the picture up there fool you, it's simpler than it looks. Enjoy!
The Oracle's Gambit - Mate in 1
Essentially it cannot be proved that Black had to play f5 the turn before (en passant is only possible with 0...f5, but even then we cannot show that Black played that).
There have seen several threads on this type of positions before. Apparently as I understand it, the position here cannot be classified as a mate in one.

Thank you everyone, I'm sure you all enjoyed it as much as @Nickenzie and @Daniel-Madison did.
Considering it's already being discussed, I'll weigh in on the puzzle a bit. In my compositions I sometimes allow for either side to have possibly blundered the game, I don't view this negatively, in fact I think it makes things very interesting in some cases such as this one. Also, I wanted the audience to be in black's shoes in this position - tried with this subtle rule, so often overlooked.
But... anything that makes the audience feel like face-palming themselves is fun to work with. I counted on this one being as frustrating as possible.
Thank you for playing. I'm currently working on a puzzle that has been giving me nightmares. It's not really difficult to solve, just tough to construct. Literally, I've dreamt about it 😐.

en phasant. i encounter this kind of puzzle the street that bets for money and never tell you that the last move was a passed-pawn.
Anyway, I'm not against making puzzles look unrealistic but a puzzle is considered more beautiful by many if it comes from a realistic position(actual impossible compositions excluded of course)
Very nice. How do you create puzzles to post like that?
Imaginations are required to compose such puzzles.

@Batman565 it's as @eric0022 says, just keep practicing and you'll get it. And as for posting the puzzle, it's like posting a game but you click on 'theme' and you tick the puzzle box. I pasted a FEN to record the En Passant, but you can set the position up directly on the chess.com chess board, or use a pgn.

@SilverByte, to put it simply, I challenge that notion. I do agree that what you've said certainly makes puzzles beautiful, but I also believe in lifting off the restrictions on the art of puzzle making.
It's a puzzle, this one expects you to reach beyond the basic logic you've all counted on for solving most of the puzzles you have, which has been analyzing the position. I do this too. I simply created a puzzle that puzzled your logic, that's a good puzzle.
I also believe it to be educational, especially for the average player, because how many players miss opportunities and wins simply because they can't grasp the illogical decisions of their opponents.

@Batman565 it's as @eric0022 says, just keep practicing and you'll get it. And as for posting the puzzle, it's like posting a game but you click on 'theme' and you tick the puzzle box. I pasted a FEN to record the En Passant, but you can set the position up directly on the chess.com chess board, or use a pgn.
Okay. How do you post a game or access the chess board?
Hi everybody. Today I present a simple 1-move-puzzle I very much enjoyed constructing. Don't let the picture up there fool you, it's simpler than it looks. Enjoy!
The Oracle's Gambit - Mate in 1