Hardest Checkmate in 1

EndgameEnthusiast2357 king to b5?

If you mean g4, that's stalemate! The black pawns are going toward the bottom, you got the board backward.

Is the board flipped? How can I know that ):

White's previous move before that is likely a capture, since it's difficult for the king and the two pawns (one of which must have started from g7) to get there in the first place.

Blacks only legal last move was g7-g5.

1. En passant Kxh5 2.Rxh7#

https://www.chess.com/club/the-cool-chess

Rxf7#

Bruhhhhhhh he can just go to h8

I tried this position on a Lichess engine and there was no possible way of mate in 1 for white unless the previous move e7 or e5, in which you could do an en-passant mate, but e7 or e5 has a less chance of happening, so this puzzle is most likely fake.

"Chance of happening" is not considered a factor in solving chess puzzles. There are choice rules for these things like "you are only permitted to play e.p. if you can prove that the captured pawn made the "giant leap of pawnkind" on the previous move in any possible game. Which is the common agreement.

Dude mate in 1 is bishop to E5

Do you know the rules of chess?

Exactly

ik but i realised later

dxe6# en passant because the last moves were Bb2+ followed by e5 to block the dark-squared bishop's attack on the king

G5 to F6

Not checkmate. Black can play Kg7xh6.

To easy?!

pawn f5 ( en passant )