![Hardest Chess Puzzle: [Checkmate in 1 move] Do you know all chess rules? ( Board: Lichess )](https://i3.ytimg.com/vi/52Gjqfq-i9I/maxresdefault.jpg)
Hardest Chess Puzzle: [Checkmate in 1 move] Do you know all chess rules? ( Board: Lichess )
video description
In answer to all of the critical comments:
It is not necessary for Black's last move to have been shown; since it was stated that there IS a solution, that tells us that Black's move must have been pawn E7 to E5, setting up the en passant possibility.
Also, the comment that Black would never have made this move is also wrong. Black made this move because Black's king was in check by White's bishop on B2, and Black's only options were to block with the pawn on the E rank or the pawn on the F rank, and if Black chose pawn F7 to F6, White Bishop X Pawn is also Checkmate.
Date: 2023-11-15
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Comments and reviews: 28
twilightturtle
As a logic puzzle, my original thought was that the board starting positions are flipped from what our initial assumption is. We assume that White started on the bottom and Black at top. But what if White was top and Black was bottom (yes, I realize to get the pieces in this configuration from opposite sides may not be real-game possible, but it is a logic 'outside the box' puzzle. If the starting positions are reversed then the Black pawns cannot move down, only up. Taking this approach the Bishop to E5 will check mate because the D6 pawn cannot capture backwards.
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As a logic puzzle, my original thought was that the board starting positions are flipped from what our initial assumption is. We assume that White started on the bottom and Black at top. But what if White was top and Black was bottom (yes, I realize to get the pieces in this configuration from opposite sides may not be real-game possible, but it is a logic 'outside the box' puzzle. If the starting positions are reversed then the Black pawns cannot move down, only up. Taking this approach the Bishop to E5 will check mate because the D6 pawn cannot capture backwards.
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Terry
I thoroughly enjoyed this puzzle. -
Does it matter that this chess piece configuration is not possible?
Two pawns are on the same file for black for the e file and for white for the a, d and e files. 2 pawns on the same file requires a diagonal move by at least one of the pawns. A pawn can only move diagonally by capturing an opposing piece. But, none of the pieces have been taken by either side. They are all still on the board.
Thank you for your efforts. May you and yours stay well and prosper.
Terry
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I thoroughly enjoyed this puzzle. -
Does it matter that this chess piece configuration is not possible?
Two pawns are on the same file for black for the e file and for white for the a, d and e files. 2 pawns on the same file requires a diagonal move by at least one of the pawns. A pawn can only move diagonally by capturing an opposing piece. But, none of the pieces have been taken by either side. They are all still on the board.
Thank you for your efforts. May you and yours stay well and prosper.
Terry
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GSA
I am a 2200+ rated player in chess. trust me I could think that if that pawn weren't on d6 then bishop captures is checkmate. but there is no question of en passant if you don't know the last move. even the engine couldn't find it after I gave the input(it obviously can't since this position is unattainable. The best I and the engine could find was mate in 2. I love your puzzles a lot. but this was kinda 'generating' an answer. its not like the answer already existed.
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I am a 2200+ rated player in chess. trust me I could think that if that pawn weren't on d6 then bishop captures is checkmate. but there is no question of en passant if you don't know the last move. even the engine couldn't find it after I gave the input(it obviously can't since this position is unattainable. The best I and the engine could find was mate in 2. I love your puzzles a lot. but this was kinda 'generating' an answer. its not like the answer already existed.
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Omamba
It is literally impossible for a legit game of chess to end up with pieces in that configuration, so there is no legit reason to assume anyone even made a move before white's turn. Without any further information, one would assume the pieces all started in that configuration. At the very least, you would need to include in the rules that black just moved.
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It is literally impossible for a legit game of chess to end up with pieces in that configuration, so there is no legit reason to assume anyone even made a move before white's turn. Without any further information, one would assume the pieces all started in that configuration. At the very least, you would need to include in the rules that black just moved.
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Mark
The position is impossible; black has all 16 chessmen, but white's pawn structure requires capturing. As such, it doesn't make sense to talk about the past.
Read Raymond Smullyan's _Chess Mysteries of Sherlock Holmes_. He has a problem with an en passant mate, in which it is possible to prove that the opponent's last move was moving a pawn two spaces.
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The position is impossible; black has all 16 chessmen, but white's pawn structure requires capturing. As such, it doesn't make sense to talk about the past.
Read Raymond Smullyan's _Chess Mysteries of Sherlock Holmes_. He has a problem with an en passant mate, in which it is possible to prove that the opponent's last move was moving a pawn two spaces.
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Otto
I don't like this puzzle, because it only MIGHT be (like he said, that the last move was e7-e5. So, only if you take the -checkmate in 1 move- literally, this all makes sense. But that's not a good way to create riddles. From a good chess puzzle I don't expect such a tricky game of words.
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I don't like this puzzle, because it only MIGHT be (like he said, that the last move was e7-e5. So, only if you take the -checkmate in 1 move- literally, this all makes sense. But that's not a good way to create riddles. From a good chess puzzle I don't expect such a tricky game of words.
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manu
There are 2 type of people.
First: who was aware of this rule before watching this video. They were able to solve the puzzle.
Second: who wasn't aware of this rule before watching this video. Now they are disliking for not disclosing previous move -
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There are 2 type of people.
First: who was aware of this rule before watching this video. They were able to solve the puzzle.
Second: who wasn't aware of this rule before watching this video. Now they are disliking for not disclosing previous move -
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Rekha
This is one move mate since this is right but if it is 2movemate than white moves the rook at f1 move Rf7 it's a check black doesn't capture rook because of Rb7, then king has only move to play h8 then white rook move at h7 and it's a checkmate
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This is one move mate since this is right but if it is 2movemate than white moves the rook at f1 move Rf7 it's a check black doesn't capture rook because of Rb7, then king has only move to play h8 then white rook move at h7 and it's a checkmate
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aycc-nbh72
One must assume, however, that the en passant capture is possible and that black-s double step move was the last move made. If the pawns were incidentally there without black having made the double step move, en passant is not allowed.
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One must assume, however, that the en passant capture is possible and that black-s double step move was the last move made. If the pawns were incidentally there without black having made the double step move, en passant is not allowed.
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Aji
I knew it when i saw thumbnail Only bishop can checkmate the black king. Then i think what if black last move was pawn tried to block the bishop checkmate the black king. So that the answer only en passant move
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I knew it when i saw thumbnail Only bishop can checkmate the black king. Then i think what if black last move was pawn tried to block the bishop checkmate the black king. So that the answer only en passant move
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Arthur
It is impossible to solve because you forgot to mention last move by 'black' player. therefore viewer doesn't know when that move was made. If you have done this. solving this puzzle is not that hard: )
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It is impossible to solve because you forgot to mention last move by 'black' player. therefore viewer doesn't know when that move was made. If you have done this. solving this puzzle is not that hard: )
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Douglas
I thought too far outside the box and thought well what if the white pieces are actually moving down the board not up as one would assume and the black pieces moving up. Then the Bxe5 is a check mate.
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I thought too far outside the box and thought well what if the white pieces are actually moving down the board not up as one would assume and the black pieces moving up. Then the Bxe5 is a check mate.
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Marco
How do you know that the last black move is e7-e5? It makes no sense hence the problem is wrong. And the position is illegal because there are doubled pawns with all the pieces still on the board.
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How do you know that the last black move is e7-e5? It makes no sense hence the problem is wrong. And the position is illegal because there are doubled pawns with all the pieces still on the board.
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Ralph
After exhausting all possible checks, all I was left wondering was cheeky pawn promotions or en passant moves. There's so few possibilities, it just has to click that en passant is on the table!
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After exhausting all possible checks, all I was left wondering was cheeky pawn promotions or en passant moves. There's so few possibilities, it just has to click that en passant is on the table!
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Marc
The problem with this puzzle is we are not told that the pawn was earlier advanced immediately prior to white move.
I tried answering it with all possible legal moves only to find that out.
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The problem with this puzzle is we are not told that the pawn was earlier advanced immediately prior to white move.
I tried answering it with all possible legal moves only to find that out.
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Jack
I'm so mad I recreated this position on my chess board and I sat for like 2 hours trying to figure it out and u go and say something so outrageous like that -- good puzzle but bad storyline
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I'm so mad I recreated this position on my chess board and I sat for like 2 hours trying to figure it out and u go and say something so outrageous like that -- good puzzle but bad storyline
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Terry
It would have to be en passant, Pawn at D5 to E6? But the prior required move by Black's pawn was not given. But it must be assumed for a solution. I don't like it, but it is what it is.
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It would have to be en passant, Pawn at D5 to E6? But the prior required move by Black's pawn was not given. But it must be assumed for a solution. I don't like it, but it is what it is.
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Prantik
Queen to f6 is another checkmate
In this video your questions is incomplete
You have to tell the last move of black else the white move -Qf6- is the only answer.
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Queen to f6 is another checkmate
In this video your questions is incomplete
You have to tell the last move of black else the white move -Qf6- is the only answer.
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Chirag
I think saying this a logical question may not be correct! Who knows this move can easily answer it. Though it is informative, heard about this move first time. -
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I think saying this a logical question may not be correct! Who knows this move can easily answer it. Though it is informative, heard about this move first time. -
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Pramod
How we can say that that very pawn of black is moved forward by two square in single move. it may possible it moved forward one by one square in two moves
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How we can say that that very pawn of black is moved forward by two square in single move. it may possible it moved forward one by one square in two moves
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Shivansh
Lol easy move when I clicked and just started watching I figured it out but when I see the thumbnail I was just visualizing every possible move
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Lol easy move when I clicked and just started watching I figured it out but when I see the thumbnail I was just visualizing every possible move
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nabiddy
Loved this puzzle, went through all the possibilities first as you did, then saw the en passant possibility in about 20 seconds. Great puzzle!
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Loved this puzzle, went through all the possibilities first as you did, then saw the en passant possibility in about 20 seconds. Great puzzle!
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Nandan
This puzzle only works if we know what the previous move black made was, since en passant is only allowed on the immediate next move.
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This puzzle only works if we know what the previous move black made was, since en passant is only allowed on the immediate next move.
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jaksap
It is not possible that black pawns are on a5, b5, and white pawn on a6. Both players have full sets of 8 pawns, and other pieces.
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It is not possible that black pawns are on a5, b5, and white pawn on a6. Both players have full sets of 8 pawns, and other pieces.
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John
I had the thought eventually -what if it-s an April fools prank-
And then it was posted on April first, I feel like a psychic
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I had the thought eventually -what if it-s an April fools prank-
And then it was posted on April first, I feel like a psychic
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Cool
this was a waste of time being that you asked a question without giving any details. We had no clue what was blacks last move
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this was a waste of time being that you asked a question without giving any details. We had no clue what was blacks last move
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Pravakar
You could have rephrased the problem as -Assuming there is a checkmate in 1, can you reconstruct the scenario? -
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You could have rephrased the problem as -Assuming there is a checkmate in 1, can you reconstruct the scenario? -
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Manoj
Loved this chess puzzle. Please include more of chess puzzles (mate in 2, 3, 4 moves) in your forthcoming videos.
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Loved this chess puzzle. Please include more of chess puzzles (mate in 2, 3, 4 moves) in your forthcoming videos.
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