All those "checkmates in 1" are easy. This one is hard. As you can see it's a chess960 diagram. And oh, it's not 1. c5-c6; figure out why.
It's probably Black to move.
I did consider the king coming from e7, until I realised that both the knight and the e6 rook were both attacking the e7 square at the same time.
And that bishop on h8 cannot have been promoted.
If it was black to move, it can't checkmate.
Why does white and black have 5 bishops?
I found it on youtube. I think it is chess960.
Arisktotle's #171 seems to be a retro with 4 variations. Good pin-mate after 1...0-0, though the same mate occurring after 1...Bxe6/Bxg6 is a slight pity.
Arisktotle's #171 seems to be a retro with 4 variations. Good pin-mate after 1...0-0, though the same mate occurring after 1...Bxe6/Bxg6 is a slight pity.
Yes, it is. Then, I've got Valladao on my side!
Why does white and black have 5 bishops?
I found it on youtube. I think it is chess960.
ok
All those "checkmates in 1" are easy. This one is hard. As you can see it's a chess960 diagram. And oh, it's not 1. c5-c6; figure out why.
It's probably Black to move.
I did consider the king coming from e7, until I realised that both the knight and the e6 rook were both attacking the e7 square at the same time.
And that bishop on h8 cannot have been promoted.
If it was black to move, it can't checkmate.
We meant Black to move, but White to checkmate after Black makes the move.
All those "checkmates in 1" are easy. This one is hard. As you can see it's a chess960 diagram. And oh, it's not 1. c5-c6; figure out why.
It's probably Black to move.
I did consider the king coming from e7, until I realised that both the knight and the e6 rook were both attacking the e7 square at the same time.
And that bishop on h8 cannot have been promoted.
If it was black to move, it can't checkmate.
We meant Black to move, but White to checkmate after Black makes the move.
There are no legal moves as black.
All those "checkmates in 1" are easy. This one is hard. As you can see it's a chess960 diagram. And oh, it's not 1. c5-c6; figure out why.
It's probably Black to move.
I did consider the king coming from e7, until I realised that both the knight and the e6 rook were both attacking the e7 square at the same time.
And that bishop on h8 cannot have been promoted.
If it was black to move, it can't checkmate.
We meant Black to move, but White to checkmate after Black makes the move.
There are no legal moves as black.
From that position, Black plays 1...b5 or 1...b6
and white captures the pawn.
The move immediately preceding the given position is a move by White.
Pawn e6 en passant
I don't see pawn e6 en passant at all. Black plays 1...b5 or 1...b6 and White launches the checkmate.
Moral of the story: quote that you are answering the original thread in post #1.
For white. Pawn takes e6 en passant.
A pity your post came immediately after my discussion on another position altogether.
In the position in the very first post #1,
- the puzzle is not exactly valid (for a chess composition puzzle, we must be able to prove that the two-square pawn move is the only possible move preceding the en passant move, or in other words, we cannot conclude en passant is possible if multiple moves are possible in the preceding move)
- the given position is illegal to begin with.
lol isn't that hard
Find the mate in 1. ( ͡° ͜ʖ ͡°)
uh im pretty sure there isn't a mate in 1
Find the mate in 1. ( ͡° ͜ʖ ͡°)
uh im pretty sure there isn't a mate in 1
1. "Qd3#"
The board is flipped.
I looked at a stalemate in one, but could not find one.
Eh wait no...
Then the king can go to b2.
It's 1. Qb3# with flipped board.
Note there is no convention which allows flipping boards simply because all conventions which allow rule changes only to find a solution are invalid - they are joke problems. My #171 is OK because the move change to black is not made to find a mate in 1 but because a specific convention already exists which makes blacks move mandatory. Once you arbitrarily change the rules to fit the desired outcome there are a million ways to find a mate in 1. In Goyael's diagram for instance: "the pawn on h6 is really a bishop in disguise". Also flipping the board is totally unimaginative. Why not rotate 90 degrees? or 270 degrees? I tell you why. It's because puzzle interfaces allow you to flip a board and leave out coordinates and not to rotate it for 90 or 270 degrees. The minds of people are increasingly modeled after the shape of the machines while it should be the other way round. Time to wake up!
It's 1. Qb3# with flipped board.
Note there is no convention which allows flipping boards simply because all conventions which allow rule changes only to find a solution are invalid - they are joke problems. My #171 is OK because the move change to black is not made to find a mate in 1 but because a specific convention already exists which makes blacks move mandatory. Once you arbitrarily change the rules to fit the desired outcome there are a million ways to find a mate in 1. In Goyael's diagram for instance: "the pawn on h6 is really a bishop in disguise". Also flipping the board is totally unimaginative. Why not rotate 90 degrees? or 270 degrees? I tell you why. It's because puzzle interfaces allow you to flip a board and leave out coordinates and not to rotate it for 90 or 270 degrees. The minds of people are increasingly modeled after the shape of the machines while it should be the other way round. Time to wake up!
I missed that the pawn on a2 was heading towards a1!
Wait a minute. If it's 960 as per the heading, the last move could have been castling. Hang on...no, that position would have been the position after castling, so it's not possible.
With the given position being White to move on standard chess, it would not have been possible to reach that position. En passant or regular capture cxb6 would be the checkmating move.
It says nowhere that "white is on move". The standard agreement is that white is on move if possible, otherwise black moves first. That is where the chess960 castling option comes in. Still white gets 1 move to execute his checkmate.
None of this is unusual, it even applies to endgame studies. Black starts if white's start can be disproved! Of course, black may have many different options to start play and white needs to solve the challenge for all of them!
Note that "n moves" in chess communication commonly refers to "about" double that amount of single moves. In compositions it always specifies "the number of white moves", leaving the number of black moves up to the type of challenge or the conditions. Some challenges use half-move notations like "5.5 moves" indicating precisely 6 white and 5 black moves but that is just a refinement.