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K+R vs. K. Mate in less than 10 moves

K+R vs. K. Mate in less than 10 moves

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K
Standard memberKirkland

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K+R vs. K ending is simple. But it may take longer than 10 moves to get a mate in some positions. Take the following position:

White: K@e5 R@e1
Black: K@e8

With White to move, can White mate in less than 10 moves?

h
Standard memberheinzkat

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Originally posted by Kirkland
K+R vs. K ending is simple. But it may take longer than 10 moves to get a mate in some positions. Take the following position:

White: K@e5 R@e1
Black: K@e8

With White to move, can White mate in less than 10 moves?
Mate in three, yes.

C
Standard memberCinco

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Originally posted by heinzkat
Mate in three, yes.


I got three as the fastest also. White can play 1. Ke6 and then corral the Black king back to e8 depending on his response (1...Kd8 2. Rc1 or 1...Kf8 2. Rg1) which leads to back-rank mate on move 3.

i
Standard memberivan2908
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Originally posted by Kirkland
K+R vs. K ending is simple. But it may take longer than 10 moves to get a mate in some positions. Take the following position:

White: K@e5 R@e1
Black: K@e8

With White to move, can White mate in less than 10 moves?
White takes the opposition and then on the next move cuts off c or f file with rook to force white king back where it was in three moves ! Nice one.

EDIT : Another, another, pls 🙂

h
Standard memberheinzkat

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You ask, we deliver...



White to move.

i
Standard memberivan2908
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Originally posted by heinzkat
You ask, we deliver...

[fen]5R2/6pr/6k1/8/5PK1/8/8/8 w - -[/fen]

White to move.
I can not find nothing significant.

c
Standard membercurseknight

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Originally posted by ivan2908
I can not find nothing significant.
So you can find something!

c
Standard membercurseknight

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Um... is it Rf5?

h
Standard memberheinzkat

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Think before you speak. White has a significant advantage!

C
Standard memberCinco

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Originally posted by heinzkat
You ask, we deliver...

[fen]5R2/6pr/6k1/8/5PK1/8/8/8 w - -[/fen]

White to move.
1. f5+ Kh6 2. Rg8! (zugzwang) if 2...g5(g6) 3. R(x)g6# or 2...Rh8 3. Rxh8#

h
Standard memberheinzkat

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Originally posted by Cinco
1. f5+ Kh6 2. Rg8! (zugzwang) if 2...g5(g6) 3. R(x)g6# or 2...Rh8 3. Rxh8#
Correct, another one for your amusement:



White to move.

C
Standard memberCinco

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Originally posted by heinzkat
Correct, another one for your amusement:

[fen]7R/K7/8/k7/Pp6/1r6/8/8 w - -[/fen]

White to move.
No takers?

1. Ra8 followed by 2. Kb7# if black moves his rook or 2. Kb6# if black captures on a4.

h
Standard memberheinzkat

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Originally posted by Cinco
No takers?

1. Ra8 followed by 2. Kb7# if black moves his rook or 2. Kb6# if black captures on a4.
(correct)

h
Standard memberheinzkat

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Last one for now:



White to move.

h
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Originally posted by curseknight
Um... is it Rf5?
1. Rf5? Rh4+ draw.

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