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Checkmate in Three?

Checkmate in Three?

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Richmond Hill

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I was wondering if it is possible for white to checkmate in three moves from this position. It's white's move, obviously.

MR

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It seems to be an odd thing to wonder, unless you know that it's a mate in 3 problem. Is it?

ob

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Originally posted by mrjonesvich321
[fen]1k3r2/ppN3bp/3R4/8/1P2nQ2/P4pPq/5P2/6K1[/fen]
I was wondering if it is possible for white to checkmate in three moves from this position. It's white's move, obviously.
Fastest I can do it is in 4: 1.Rd8+,Qc8 2.Na6+,Ka8 3.Qb8+,Qxb8 4.Nc7# checkmate.
I see no way to improve that line.

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Richmond Hill

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its not a checkmate in 3 problem, my book says it wud take 4, but i thought i had it in 3 at one point

P

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well at a glance, Kna6+ pawn takes, rook d7+ (from queen) queen goes in for kill after but bishop can delay for one move so it would be four moves,.... too tired to look too closely but white can easily win from this position.If nobody has answered by the morning then I will look properly.

ob

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Originally posted by Pigface1
well at a glance, Kna6+ pawn takes, rook d7+ (from queen) queen goes in for kill after but bishop can delay for one move so it would be four moves,.... too tired to look too closely but white can easily win from this position.If nobody has answered by the morning then I will look properly.
You forget the queen is hanging.

P

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my moves are all check though
Its 2.20 AM here and my eyes are closing I would love to have a go at this one because I think the key is the knight check first, but by the time I get up this will be solved.
Knight checks, pawn takes knight, rook d7 check from queen, king goes into corner, queen takes knight check king moves b8 queen goes to checkmate.... thats still 4 though

MR

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Why don't you just plug the position into an engine? An engine could find it almost instantly.

ob

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Originally posted by Pigface1
my moves are all check though
Its 2.20 AM here and my eyes are closing I would love to have a go at this one because I think the key is the knight check first, but by the time I get up this will be solved.
Yes,all check,but the 2nd check is given by a hanging queen.After 1.Na6+,bxa6 2.Rd7+??,Rxf4 how will you mate black with your lone rook?

P

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because i am too tired, i dont have an engine, and i like figuring them out myself.

P

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Originally posted by ouwe belg
Yes,all check,but the 2nd check is given by a hanging queen.After 1.Na6+,bxa6 2.Rd7+??,Rxf4 how will you mate black with your lone rook?
yea good point, i am clearly too tired to do this in my head and cant be bothered right now to setup the position in analasyis.

ob

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Originally posted by Pigface1
because i am too tired, i dont have an engine, and i like figuring them out myself.
It's 3.30am overhere,I'm tired too.Why use an engine for this?And the queen is still hanging 😛
Rest well,you'll see it in the morning when you are fully awake.

edit: you already saw it 🙂

MR

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Originally posted by Pigface1
because i am too tired, i dont have an engine, and i like figuring them out myself.
Sorry, I should have done a quote. My engine question was for jonesvich. BTW, my engine gave me an answer, but I'll hold off on mentioning it in case you still want to figure it out on your own.

m

Richmond Hill

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I don't have an engine, though that's probably an investment I should make. Are there online ones?

MR

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Originally posted by mrjonesvich321
I don't have an engine, though that's probably an investment I should make. Are there online ones?
Sure, there are a number of free ones. Probably the best free one is the Arena GUI. Go to the link below, then go to the "Arena Downloads" section. For starters, just download the Arena 1.1 Setup 1. (Version 1.1 is stable, and Setup 1 comes with the SOS 5.1 engine, which isn't bad.) Later you can download other free engines and add them to the Arena GUI.

http://www.playwitharena.com/

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