Why did he did so?

Technical questions regarding Openings, Middlegames, Endings etc.
soheil_hooshdaran
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Re: Why did he did so?

Post by soheil_hooshdaran » Fri Jun 02, 2017 5:43 pm

Richard Bates wrote:What is the logic behind asking people to explain the "logic" behind winning combinations?
To learn
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soheil_hooshdaran
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Re: Why did he did so?

Post by soheil_hooshdaran » Fri Jun 02, 2017 5:45 pm

IM Jack Rudd wrote:There's a cute checkmate: 1.Nxb6 Kxb6 2.Qxa5+! Kxa5 3.Nc4#.

Obviously, black can play 2...Kb7 instead, but then 3.b6 is a lethal double attack.
I saw the line. My question is, what explains it? What's the motif, and the theme ( forgot the 3rd element)
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Roger de Coverly
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Re: Why did he did so?

Post by Roger de Coverly » Fri Jun 02, 2017 7:21 pm

soheil_hooshdaran wrote: My question is, what explains it?
Black gets mated or loses lots of material. Game Over basically. Is any more explanation needed?
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soheil_hooshdaran
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Re: Why did he did so?

Post by soheil_hooshdaran » Fri Jun 02, 2017 7:54 pm

Yes, How to recognize such a tactic?
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John McKenna

Re: Why did he did so?

Post by John McKenna » Sat Jun 03, 2017 1:17 am

Pleased to hear that it's me, and not you, barking up the wrong tree.
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Roger de Coverly
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Re: Why did he did so?

Post by Roger de Coverly » Sat Jun 03, 2017 7:59 am

soheil_hooshdaran wrote:Yes, How to recognize such a tactic?
The stronger the player, the more likely that the winning combination, or at least skeletons of it, is the first thing they notice. Call it intuition or pattern recognition. That's what at least some of these self improvement methods don't really recognise.
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soheil_hooshdaran
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Re: Why did he did so?

Post by soheil_hooshdaran » Sun Jun 04, 2017 7:37 pm

What's the nnotif for the following combination?
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MartinCarpenter
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Re: Why did he did so?

Post by MartinCarpenter » Mon Jun 05, 2017 11:49 am

That's not the key to things. What is meant to happen to white if he takes the rook?
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soheil_hooshdaran
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Re: Why did he did so?

Post by soheil_hooshdaran » Mon Jun 05, 2017 7:53 pm

1...Rxd5 2.exd5 Bd3+ 3.Ke1 Be3 4.Qa3 Rc2 -+
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soheil_hooshdaran
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Re: Why did he did so?

Post by soheil_hooshdaran » Fri Jun 09, 2017 3:45 pm

What's this combination based on?
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Barry Sandercock
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Re: Why did he did so?

Post by Barry Sandercock » Fri Jun 09, 2017 3:49 pm

It's just based on knowing how to play good tactical chess !
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Roger de Coverly
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Re: Why did he did so?

Post by Roger de Coverly » Fri Jun 09, 2017 4:35 pm

soheil_hooshdaran wrote:What's this combination based on?
A forced mate presumably. Black's first move is on the theme of interference as I think problemists would describe it, interfering with the Bishop's access to a4.
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soheil_hooshdaran
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Re: Why did he did so?

Post by soheil_hooshdaran » Fri Jun 09, 2017 4:39 pm

Also tempo-gaining Nc5....
The restricted K
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soheil_hooshdaran
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Re: Why did he did so?

Post by soheil_hooshdaran » Sat Jun 10, 2017 4:31 am

What's this combination based on?
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IM Jack Rudd
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Re: Why did he did so?

Post by IM Jack Rudd » Sat Jun 10, 2017 8:48 am

Removal of defender. The c2 pawn is overloaded, needing to guard both b3 and d3.
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