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Rauf Mamedov vs A R Saleh Salem
Qatar Masters (2014), Doha QAT, rd 7, Dec-02
Vienna Game: Mieses Variation (C26)  ·  0-1

ANALYSIS [x]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Dec-23-15  morfishine: <42...Rxd5> is decisive threatening 43...Rd2+

If 43.exd5, then the other rook gets to the 2nd rank 43...Re2+ with the same threat

*****

Dec-23-15  gofer: Today, <42 ... Rxd5> ticks all the right boxes...

...it threatens Rd2+ and Qe5+ and Re2+

43 exd5 Re2+ mating

43 Ra3 Rd2+ mating

43 Rad1 Qe5+ mating

43 Rfd1 Qe5+ mating

The only vaguely sensible defence seems to be...

<43 Rf2 ...>

Which loses a rook immediately.

<43 ... Qe5+>
<44 Kg1 Qxa1+>

Do we need to go further?! Probably not...

<45 Rf1 Rd1>
<46 Qc4 Rxf1+>
<47 Qxf1 Qxf1+>
<48 Kxf1 f6>


click for larger view

The bishop is never going to get a look in, because playing e5 at any point in time is going to lose a pawn, giving black a R+2P advantage...

~~~

Yep!

Dec-23-15
Premium Chessgames Member
  watwinc: <Fizzy> Thank you - the Rf1 simply disappeared from my mental board, I saw Qg3+, “escaped” with Kf1 …
Dec-23-15  Coriolis: I thought the move was 42... Nf5 with the threat of 43... Qg3#. Any advice?
Dec-23-15  nalinw: Talk about a present from Santa - I am 0 for 3 this week - or ?? for 3 if I claim something for my secondary solution on Monday.

If 42... Nf5 I suppose White has
43. Rg1 and will bring the other Rook over to e1 the next move.

Dec-23-15  diagonalley: <diagonalley>: nul points :-(
Dec-23-15
Premium Chessgames Member
  whiteshark: <42...Rxd5!>, and that's it!
Dec-23-15  roentgenium: Saw 42...Rxd5 as a 'safe' pawn win, but like <al wazir>, I did not notice the Rook fork tactic and thus couldn't work out how to obtain further advantage after 43.Rf2.
Dec-23-15  garrido: Witches of Salem or Chess of witches
Dec-23-15  DLev: 42 ... Rxe4? 43 Bxe4 Rxe4? Has a nice idea of threatening a mating attack beginning with checks on 2 different squares, but white mates first with 44 Ra8+ and 45 Rf7+. 42 ... Rxd5! has the double threat without the flaw.
Dec-23-15  Cheapo by the Dozen: I didn't work through all the variations.

I just saw that at worst ... Rxd5 snatched a pawn, since White had to try passive defense, and no alternative for Black was similarly promising.

Dec-23-15  nosh: What's best against Qe1 as a defense? My line is 42: ... Rxd5 43: Qe1 Rd2 44: Rf2 Qf4 45: Kg1 Qg3 46: Bg2 Nf3 47: Kf1 Nxe1. Not using a board or engine so could be flawed.
Dec-23-15  CHESSTTCAMPS: Black has an active knight against a bad bishop, with material otherwise even. The white king is poorly protected, trapped on h2 by the black queen, with a pawn shelter of one. Black only needs to deliver a lateral check to finish.

42... Rxd5! opens two avenues of attack, leaving white defenseless:

A.43.exd5 Re2+ forces mate.

B.43.Rad1 Qe5+! 44.Kg1 Qg3+ 45.Bg2 Qxg2#

C.43.Rf2 Qe5+ 44.Kg1 Qxa1+ 45.Rf1 Rd1 is the simplest win

D.43.other Rd2+ wins

Dec-23-15  saturn2: I got Rxd5 winning a pawn and threatening some nasty things. So I feel a bit conforted after spending two much time for the monday puzzle (although finally solving it) and posting the plunder Bxc6 as an option on the yesterday thuesday.
Dec-23-15
Premium Chessgames Member
  kevin86: Black's rook (either one) will penetrate to white's second row and will force mate.
Dec-23-15
Premium Chessgames Member
  Jimfromprovidence: <Nosh> <What's best against Qe1 as a defense? My line is 42: ... Rxd5 43: Qe1 Rd2 44: Rf2 Qf4>

I had this same line except for 44...Qf4. I had either 44...Qe5+ or 44...Red8, below.


click for larger view

Dec-23-15  TheaN: Interesting Wednesday, in the sense that after the first move, black has a very clear threat but also a hidden one.

After 42....Rxd5, obviously pinning white to the defense (literally, for Pe4) as the rook cannot be taken and black threatens the obvious 43....Rd2+. However, it's the hidden threat that makes a regrouping move like 43.Rad1 useless: black just vacanted e5, hence 43....Qe5+! is the true threat that ends it all.

Dec-23-15  stst: < According to Deep Fritz 14, 42...Rxd5 forces mate in 29 moves.>

Again, engines differ. Nice to see how White can delay mate until 29 moves later.

Granted this, POD would lose interest for such a long trial, because, again, it would lose beauty as well... (Well, of course, beautfy is in the eyes of the beholder!!)

Dec-23-15  schachfuchs: Got 42...Rxd5, but didn't see the rook win after 43.Rf2 Qe5+, not talk about the mate in 29 ;-)
Dec-23-15  Marmot PFL: 42...Rxd5, about 1 minute and a few seconds to find, couldn't see a good defense for white.
Dec-23-15
Premium Chessgames Member
  thegoodanarchist: < agb2002: ...

D) 43.Rf2 Qe5+ 44.Kg1 Qg3+ >

This line is not clear after 45.Bg2

I prefer <gofer>'s line:

<gofer: ...The only vaguely sensible defence seems to be...

<43 Rf2 ...>

Which loses a rook immediately.

<43 ... Qe5+>
<44 Kg1 Qxa1+>>

Dec-23-15  Coriolis: I still think 42. Nf5 is not a bad move, albeit not as good as the model answer. Prove me wrong.
Dec-23-15  sfm: <Coriolis: I still think 42. Nf5 is not a bad move, albeit not as good as the model answer. Prove me wrong.> How is 43.RxN, e.g. 43.-,gxR 44.Rg1 for a proof? ;-)
Dec-24-15
Premium Chessgames Member
  agb2002: <thegoodanarchist: < agb2002>> Yes. Taking the rook is much better and simpler than pursuing a direct attack against the white king, as pointed out by gofer and CHESSTTCAMPS.

Sometimes it's difficult not to focus on just one side of the board!

Dec-25-15  Coriolis: <sfm> Thanks for your answer. Proof enough.
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