Hardest mate in 1 puzzles

jdh1

kiwichesskiwi wrote:

THIS ONE IS THE HARDEST!!!

White to move and mate in 1

Wonderful puzzle and anecdote as presented by Hebden Bridge Chess Club

Answer / explanation here:http://hebdenbridgechessclub.blogspot.com/2011/02/hardest-chess-problem-in-world.html

This is impossible under today's rules.

783ChessIsAGame
aman_makhija wrote:
 

this is actually a checkmate look at the positioning of the pieces there is something off lol

this is actually possible 

Arisktotle
783ChessIsAGame wrote:

this is actually a checkmate look at the positioning of the pieces there is something off lol

this is actually possible 

Quiet down. We know there is a checkmate. It's not a checkmate of this planet, but definitely one of the 3rd kind! Don't phone home. We already informed everyone in the universe. But you, apparently.

783ChessIsAGame
Arisktotle wrote:
783ChessIsAGame wrote:

this is actually a checkmate look at the positioning of the pieces there is something off lol

this is actually possible 

Quiet down. We know there is a checkmate. It's not a checkmate of this planet, but definitely one of the 3rd kind! Don't phone home. We already informed everyone in the universe. But you, apparently.

haha I noticed that when I posted it and I haven't called anyone about it yet

Arisktotle
Teddyhead wrote in post #133:
Here's an interesting position:
 

Here is (my) late and definitive reply to this one. It is undecidable by codex conventions but it can be approached through a natural extension:

* whenever only recessive retro-states (like e.p. right) for a group of mutually exclusive retro-properties are available, they all elevate (promote) to become dominant states (like castling right).

Knowing this, there are still 2 choices, namely PRA and RS logic. By RS, there are 2 solutions since RS simply yields the power of choice amongst dominant rights to the player. With PRA there are 2 partial solutions which count as 1 complete solution. By the current convention in article 16 (which I don't agree with btw) the problem should be assigned the PRA-logic-status with the 2 partial solutions.

However there is an arbitrary alternative for the extra "retro"-convention. It is possible to assert that recessive rights may only be elevated when necessary to provide a move-option. Thus not in this diagram, implying that neither e.p. move is permissible. But in a different diagram where no other move-options are available, we must permit rights elevation since it is illegal to terminate a game in stalemate when no proof game for that stalemate exists! 

When you understand this, there is a place for you at Princeton.

EndgameStudier

Pawn to B8 promoting to a black knight, you call that hard?

Arisktotle
EndgameStudier wrote:

Pawn to B8 promoting to a black knight, you call that hard?

The 2019 criterion for "hard" is to make a StockFish/AlphaZero team chew on it for 24 hours. I predict the outcome is "hard".

Jazyrider

 

Warbler
Remellion wrote:

Maybe retros are too hard. I'll make a regular #1. Yep.

Protip: There is only one move that mates in one.

Okay, someone please give me the solution, because I just can’t see it and it is driving me nuts!

www.chess.com/forum/view/more-puzzles/hardest-mate-in-1-puzzles?quote_id=27201156&page=2#comment-27201156

Arisktotle

When you know how to use the Analysis function you can quickly have it solve the problem for you (about 30 seconds). Remellion instructed it to let black move first but you can easily overcome that!

Hint; The solution is a mate by a white Queen!

Warbler
nichster wrote:

I don't get it.  I don't see a mate in one.   White has too many pawns.  What am I supposed try to do here?

Warbler
Arisktotle wrote:

When you know how to use the Analysis function you can quickly have it solve the problem for you (about 30 seconds). Remellion instructed it to let black move first but you can easily overcome that!

Hint; The solution is a mate by a white Queen!

Yeah, I finally figured out(without the analysis function which I am still unsure how to use ) after I made that post.   But thanks for your help. 

Arisktotle
Warbler wrote:
nichster wrote:

I don't get it.  I don't see a mate in one.   White has too many pawns.  What am I supposed try to do here?

It's a troll post like about half of all posts. Ignore.