So, if you can not find the way, now that before whites move black pawn played e7 to e5. and white pawn on d5 can beat e6. checkmate. 
The Hardest Mate in 1 ever.
Sort:
Feb 25, 2018
0
#3
It's a well known puzzle, but it's more well known for being an illegal position than for the en passant solution.
Feb 25, 2018
0
#4
I found it but it took me a while. Often the key to solving these seemingly impossible puzzles is to consider unusual moves that may have been made previous to the current board position.
Feb 25, 2018
0
#7
illegal position because white and black pawns moved files while all of the pieces are still present
I posted this same puzzle a few months ago. En passant gives mate with Bishop. It’s from YouTube
You take on e6 enpassant, right?
Feb 25, 2018
0
#10
Bad_Dobby_Fischer wrote:
illegal position because white and black pawns moved files while all of the pieces are still present
Yeah that's right. I did mention unusual previous moves, didn't I? lol
DragonPhoenixSlayer wrote:
You take on e6 enpassant, right?
Only if it can be proved that the previous move was e7-e5.
In chess compositions, en passant is treated to be a possible option only if it can be proved that the previous move was a two-square pawn push. Thus, the puzzle solution is not exactly valid.
Though, if this were to be treated as a logic question, then the puzzle and the solution would be valid.
If this was an actual game I think I would just have gone Rfxf7+ Rxh7# anyway. I think it's strange that the puzzle was made this way. Its an illegal position, but with plenty of pieces that aren't doing anything and the position could easily have been made a legal if they were just slighly moved or removed.
You know guys, this is not my creation, of course, I also believe this is an illegal position. So, this problem gave for fun. (I took it from youtube)
DragonPhoenixSlayer wrote:
If this was an actual game I think I would just have gone Rfxf7+ Rxh7# anyway. I think it's strange that the puzzle was made this way. Its an illegal position, but with plenty of pieces that aren't doing anything and the position could easily have been made a legal if they were just slighly moved or removed.
It's just a test of visualisation and calculation skills. I would just go for the same mate in two.
I made it into a legal position.
Feb 25, 2018
0
#16
NO! When d5 takes the e pawn en passant it isn't even a check, let alone a checkmate! You claimed it would be mate in one.
thepawnperogative wrote:
NO! When d5 takes the e pawn en passant it isn't even a check, let alone a checkmate! You claimed it would be mate in one.
Yes it's mate the bishop on b2 checks the king. The king can't go to h8 or f6 because of the bishop, it can't capture the knight on h6 because it's protected by the queen, it can't go to g8 because of the knight and it can't block with the f pawn because it's pinned by the rook.
There isn't a mate in one. With checks from all pieces King has escape to h8 where it is not in check. The only way for it to be mate is if Bishop puts it in check. The only way for bishop to put the king in check is if dxe6 en passant. However we dont know that e6 was the previous move.
So in light of this lack of clarity there is no mate in one.
White move. Really great tricky mate. So, If you can not find, check comments then you will find the way. Maybe you saw this puzzle somewhere but I would like to share it with others. Good luck!