King and Queen/Rook vs. King

pulern

Only Chess

16 Nov 09

pulern

Joined: 04 May 05
Moves: 2621

16 Nov 09

Is it possible to set up a three piece position with;
a) White King + White Queen vs. Black King, so that forced mate is MORE than 8 moves?
b) White King + White Rook vs. Black King, so that forced mate is MORE than 15 moves?

Regards, Paul

PBE6

Bananarama

False berry

Joined: 14 Feb 04
Moves: 28719

16 Nov 09

Originally posted by pulern
Is it possible to set up a three piece position with;
a) White King + White Queen vs. Black King, so that forced mate is MORE than 8 moves?
b) White King + White Rook vs. Black King, so that forced mate is MORE than 15 moves?

Regards, Paul

White to move, mate in 9.

White to move, mate in 16.

(According to Shredder's endgame tablebase anyway...)

heinzkat

Joined: 25 Apr 06
Moves: 5939

16 Nov 09

I'm pretty sure there is a website containing such information

Varenka

Joined: 21 Sep 05
Moves: 27507

16 Nov 09

Originally posted by heinzkat
I'm pretty sure there is a website containing such information

Indeed. 🙂 Here is one example...

http://www.gilith.com/chess/endgames/

heinzkat

Joined: 25 Apr 06
Moves: 5939

16 Nov 09

So the stipulation for K+Q vs. K should be different, more than 9...

National Master Dale

Joined: 29 Aug 09
Moves: 1574

17 Nov 09

The title of this thread made me think this thread was going to be about how to win with king and queen vs rook and king.

I usually just make oodles of checks and win the rook by accident.
I don`t think that works against computers but it works great in blitz vs earthlings.

heinzkat

Joined: 25 Apr 06
Moves: 5939

17 Nov 09

Originally posted by National Master Dale
The title of this thread made me think this thread was going to be about how to win with king and queen vs rook and king.

I usually just make oodles of checks and win the rook by accident.
I don`t think that works against computers but it works great in blitz vs earthlings.

I actually know the Q vs. R Philidor position, I have no life 😞