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| 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 ***** |
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| 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 viewThe 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! |
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| Dec-23-15 | | watwinc: <Fizzy> Thank you - the Rf1 simply disappeared from my mental board, I saw Qg3+, “escaped” with Kf1 … |
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| Dec-23-15 | | Coriolis: I thought the move was 42... Nf5 with the threat of 43... Qg3#. Any advice? |
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| 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. |
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| Dec-23-15 | | diagonalley: <diagonalley>: nul points :-( |
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| Dec-23-15 | | whiteshark: <42...Rxd5!>, and that's it! |
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| 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. |
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| Dec-23-15 | | garrido: Witches of Salem or Chess of witches |
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| 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. |
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| 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. |
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| 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. |
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| 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 |
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| 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. |
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| Dec-23-15 | | kevin86: Black's rook (either one) will penetrate to white's second row and will force mate. |
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Dec-23-15
 | | 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 |
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| 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. |
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| 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!!) |
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| 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 ;-) |
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| Dec-23-15 | | Marmot PFL: 42...Rxd5, about 1 minute and a few seconds to find, couldn't see a good defense for white. |
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| Dec-23-15 | | 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+>> |
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| 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. |
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| 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? ;-) |
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| Dec-24-15 | | 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! |
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| Dec-25-15 | | Coriolis: <sfm> Thanks for your answer. Proof enough. |
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