Mate in 1

Bowmann

Non-Subscriber

Posers and Puzzles

05 Dec 05 16:39

Bowmann

Non-Subscriber

RHP IQ

Joined: 17 Mar 05
Moves: 1345

05 Dec 05 16:39

Tetsujin

Mississauga, Ontario

Joined: 28 Oct 05
Moves: 668

05 Dec 05 16:45

2 edits

Originally posted by Bowmann
[fen]rk2K3/NPR5/8/8/1Q6/8/8/8[/fen]

Now you're just making me feel stupid. 🙁

Edit 1:

If you capture the rook with the pawn to promote to queen, then you roko is captured by the king, and the new queen moves to c6 for the win.

1. a8=Q Kxc7
2. Qc6#

That's two moves, but that's not what you want I guess.

I don't see anything else that's quicker.

Edit 2:

1. Rc8 Kxa7
2. Rxa8#

Bowmann

Non-Subscriber

RHP IQ

Joined: 17 Mar 05
Moves: 1345

05 Dec 05 17:03

Originally posted by Tetsujin
Now you're just making me feel stupid. 🙁

😉

ilywrin

Joined: 30 Oct 04
Moves: 7813

05 Dec 05 17:10

Well, since it is Black to move:
0...Kxa7 1.b8Q#
0...Kxc7 1.bxaN#
0...Rxa7 1.Rc8#

BigDogg

Secret RHP coder

on the payroll

Joined: 26 Nov 04
Moves: 155080

05 Dec 05 17:17

Originally posted by Bowmann
[fen]rk2K3/NPR5/8/8/1Q6/8/8/8[/fen]

Usually, Mate-in-1 problems are Retros (because a simple forward #1 is uninteresting).

White does not have the move in the diagram, because Black has no legal last move. Black can't give checkmate, so it must be that White mates against any Black move.

1...Kxa7 2.b8=N#
1...Kxc7 2.bxa8=N#
1...Rxa7 2.Rc8#

BigDogg

Secret RHP coder

on the payroll

Joined: 26 Nov 04
Moves: 155080

05 Dec 05 17:18

Originally posted by ilywrin
Well, since it is Black to move:
0...Kxa7 1.b8Q#
0...Kxc7 1.bxaN#
0...Rxa7 1.Rc8#

Hey! There's ilywrin. Welcome back. You beat me to the solution, but you got a variation wrong...

ilywrin

Joined: 30 Oct 04
Moves: 7813

05 Dec 05 17:52

1 edit

Oh, I really did get the variation wrong 😉 Thanks, BigDogg

Bowmann

Non-Subscriber

RHP IQ

Joined: 17 Mar 05
Moves: 1345

05 Dec 05 18:07

No squatting in this thread. Get a room 😛

Black Queen

Joined: 15 Sep 06
Moves: 1692

19 Nov 06 13:37

1 edit

I am digging up old threads randomly. My solution (in 2) would be just:
Rc8+ KxN
RxR#
or:
Kd8 RxN
Rc8#
or:
Kd8 KxN
b8=Q+ Ka6
Qb6#
or even if I were drunk:
Rc8+ KxN
Qa5+ KxP
QxR+ Kb6
Rc6+ Kb5
Qb7+ Ka5
Ra6#
Sorry but I am bored with new ones and practicing my visualizing.

BigDogg

Secret RHP coder

on the payroll

Joined: 26 Nov 04
Moves: 155080

19 Nov 06 19:18

Originally posted by Black Queen
I am digging up old threads randomly. My solution (in 2) would be just:
Rc8+ KxN
RxR#
or:
Kd8 RxN
Rc8#
or:
Kd8 KxN
b8=Q+ Ka6
Qb6#
or even if I were drunk:
Rc8+ KxN
Qa5+ KxP
QxR+ Kb6
Rc6+ Kb5
Qb7+ Ka5
Ra6#
Sorry but I am bored with new ones and practicing my visualizing.

You can dig up old threads and study them without having to post, you know.

Black Queen

Joined: 15 Sep 06
Moves: 1692

19 Nov 06 19:33

Good point. I'll do that. Thanks for the shrouded advice.