"Forced" Forced Mates

In the rulebook, it shows that both players must make alternating moves. So my challenge is to create a position in which the player who has the move MUST make a move that leads to checkmate. I believe this is only possible for mates in 1, but I may be wrong. Here's an example (White to move):

Maybe I'm not seeing what you are saying, but white has only 1 legal move, and that move happens to be checkmate. The King cannot move anywhere. The pawn above the king (h7) cannot move, and the pawn beside the king (g6) can only checkmate the black king.

I'll work on that. Meanwhile, how about a position in which there's only one move that doesn't lead to mate?

From Hoyle Majestic Chess (White to move):

Black



White

Originally posted by typen
Maybe I'm not seeing what you are saying, but white has only [b]1 legal move, and that move happens to be checkmate. The King cannot move anywhere. The pawn above the king (h7) cannot move, and the pawn beside the king (g6) can only checkmate the black king.[/b]

Here's one I just made where Black is forced to mate in two:


Black



White

EDIT: This one's flawed; still working.

Originally posted by twilight2007
In the rulebook, it shows that both players must make alternating moves. So my challenge is to create a position in which the player who has the move MUST make a move that leads to checkmate. I believe this is only possible for mates in 1, but I may be wrong. Here's an example (White to move):
[fen]7k/7P/6PK/r7/8/8/8/8 b 50[/fen]

Here we go:

White to move, and White must mate within 4

White



Black

Even better:

White to move and must mate in four moves:

Black



White

I looked to increase the number of pathways. White to play MUST mate in either 1 or 2, and there are five different mates:

Originally posted by Jirakon
I'll work on that. Meanwhile, how about a position in which there's only one move that doesn't lead to mate?

From Hoyle Majestic Chess (White to move):

Black

[fen]B5KR/1r5B/6R1/2b1p1p1/2P1k1P1/1p2P2p/1P2P2P/3N1N2[/fen]

White

Originally posted by Jirakon
I'll work on that. Meanwhile, how about a position in which there's only one move that doesn't lead to mate?

From Hoyle Majestic Chess (White to move):

Black

[fen]B5KR/1r5B/6R1/2b1p1p1/2P1k1P1/1p2P2p/1P2P2P/3N1N2[/fen]

White

Originally posted by EinsteinMind

Originally posted by SwissGambit
Re-read what he wrote.

Edit: Looks like you just did. 😉

Originally posted by EinsteinMind
sorry. I posted something then I saw you were defining it differently then I was looking to see how i could fulfill the boundaries you gave and I was about to suggest another move when I saw that It was wrong.

I'll admit i'm crappy on these sorts of puzzles...

maybe I should stay out of these.

http://www.xs4all.nl/~timkr/chess2/diary_14.htm
Item 267

http://www.xs4all.nl/~timkr/chess2/diary_7.htm
Item 130