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|Mar-01-10|| ||agb2002: Black is a pawn ahead. White threatens 37.Qxh4 Rh8 (37... Rg2+ 38.Kh1) 38.Qxh8+ Qxh8+ 39.Kxg3 Qg7+ 40.Kf3 Qg5 41.e7 + -.|
However, Black delivers mate with 36... Rh3+ 37.Kxh3 Qg2+ 38.Kxh4 Rh8+ 39.Qh6 Rxh6#.
|Mar-01-10|| ||SamAtoms1980: 36 ... Rh3+!! 37 Kxh3 Qg2+ 38 Kxh4 Rh8+ 0-1.
<J M Gomez Esteban> gg
<J L Arizmendi-Martinez> gg
[J L Arizmendi-Martinez has logged off.]
|Mar-01-10|| ||TheaN: <Once: <evlozare: you guys all missed the irony of the puzzle. haven't you noticed that the win was credited to black?> Yup, I think we've all spotted that. Okay so <TheaN> wrote 1-0, but he/she is a very experienced solver and I have no doubts that this was just a slip of the keyboard finger.>|
I did. This is one of those consistent mistakes I make from time to time. Take note that in the -ml- explanation I describe a variation in which White gets decisive advantage: it probably confused me. However, if I make a variation up to forced make with a Black move, it is rather obvious I know Black won :).
Oh, <Once>, on a sidenote, I'm male, as can be seen in my profile. The origin of the nickname which can be read as Thea N. (female in Dutch), is rather complex :P.
|Mar-01-10|| ||TheaN: As such, 1/1, and of course read 39....Rxh6‡ 0-1 ^^.|
|Mar-01-10|| ||whiteshark: One for the Game Collection: 03_Heavy pieces in action: pure QRR middlegames|
|Mar-01-10|| ||OhioChessFan: I think sometimes it's useful to step back and ask why a sacrifice works. In this case, White has 3 major pieces staring down the g file. The opposing King is on the h file. It only takes 2 of those major pieces, one on each file, g and h, to mate the King. White has no practical way to employ any of his 3 major pieces to stop that. Therefore, the sacrifice of one of Black's 3 major pieces is in order, and quite successful.|
When the heavy pieces get lined up like this, and a sac is in order, I am reminded of Lasker's comment that the other player's pieces might as well be anywhere but on the board.
|Mar-01-10|| ||Uvulu: Shame on me! I missed Monday's solution! Instead of 37... Rh3+!, I went for 37... Rf3 38.Rg1 Rxf4 39.Rxg7 Rxg7, which is still winning, only it'll take a little longer. Well, at least I got an original solution :)|
|Mar-01-10|| ||zb2cr: White resigned in view of 36. ... Rh3+; 37. Kxh3, Qg2+; 38. Kxh4, Rh8+; 39. Qh6, Rxh6#.|
|Mar-01-10|| ||wordfunph: 36...Rh3+!
forced 37.Kxh3 Qg2#
|Mar-01-10|| ||wordfunph: ouch! i missed...38.Kxh4 Rh8+ 39.Qh6 Rxh6#|
|Mar-01-10|| ||azax: 36...Rh3+ is the only move forcing mate.
Rg2+ is met with Kh1, where 37. ...Rh2+ is met with Qxh2 and anything else allows white to defuse the attack.
|Mar-01-10|| ||benveniste: <andrewleef1> On 36. ... g2, white plays h1. The bad news is that black doesn't have anything better than g3, the good news is that white still has no way out.|
|Mar-01-10|| ||DarthStapler: Got it|
|Mar-01-10|| ||chesskidnate: <benveniste> on Rg3 white plays Qf5!|
|Mar-01-10|| ||chesskidnate: to finish the line 38... Qh7 39. Re2 and i dont see a win for black|
|Mar-01-10|| ||Patriot: I dismissed the key move too quickly at first and looked at other ways to toss the rook to allow Qg2#. Rh3+ doesn't accomplish that but it manages to force white into a ladder mate. So pattern recognition failed, but eventually the "check, capture, and threat" approach came through.|
<andrewleef1> You forgot there is another rook in your "second win".
<36 ... Rg2+
37 Kh3 (Kh1 Rg1+ 38. Rxg1 Qxg1#) Rh2+
38 Qxh2 (Kxh2 Qg2#) Qg4#>
i.e. 36...Rg2+ 37.Kh1 Rg1+ 38.Rxg1 Qxg1+ 39.Rxg1 Rxg1+ 40.Kxg1
<<OhioChessFan>: I think sometimes it's useful to step back and ask why a sacrifice works.> Great point. Here I would say the sacrifice is worth considering because it allows a king hunt, albeit a short one, thanks to the black forces in the vicinity of the king.
|Mar-01-10|| ||dufferps: If Arizmendi-Martinez is playing me instead of Gomez Esteban, he better not resign so quickly. I missed the Rh3+ forced mate.|
|Mar-01-10|| ||chrisowen: Little fret, 36..Rh3+ for Estevan's gamble strikes a chord.. Kxh3 Qg2+ Kxh4 Rh8+ Qh6 Rxh6#. Black keys in a step, he nearly unpicks with rook g2 jamming gfile.. Kh1 then h3 the key is e6 turning the tangle. Would Martinez guide it home? No.. e7 Re8 Rf2 Rxf2 Qxf2 Rxe7 white strings along Esteban cracking the grip he has, but the flame is not out.. Qxe7 Kh2 Qe4 Kxh3 f5. White blows open safety plucking the pieces off.|
|Mar-01-10|| ||neveramaster: Does anyone have any opinions on this opening for White? It seems to yields a good advantage in space, but the risks are high.|
|Mar-01-10|| ||turbo231: A rare moment i saw rh3+ in about a second, Qg2+ about the same time. Didn't see Kxh4! I thought Qg2 was mate silly me. Then i saw rh8 and all the white Queen could do was interpose at h6, RxQh6#! I ended up feeling horrible for not seeing Kxh4! Although i made the first 2 moves correctly i'll mark this down as a failure for not seeing Kxh4! One of these days i'll get it right ( no way). Thinking more than 2 moves ahead is very difficult for me. I shouldn't get personal but i had a mild stroke about 7 years ago then a massive stroke 4 years ago, but i keep fighting on. Thank God for blood thinners! Oh well there's always next Monday.|
|Mar-01-10|| ||YouRang: I found 36...Rh3+! and the forced mate that ensues. |
It struck me as funny, because I played a very similar tactic against a (weak) computer not long ago. At the time, I thought I was very clever for finding that. Now I see that it only rated a "Monday puzzle" :-\
Anyway, it's sort of a clearance sac, although the it's not really the our rook, but the pawn that we want to vacate, so that our other rook can check down the h-file. Sacrificing the rook facilitates the clearance of the pawn.
|Mar-01-10|| ||kevin86: Clearence Sale!! Rh3+ and mates soonest:
36...h3+ 37 xh3 g2+ 38 xh4 h8+ and mate next.
|Mar-01-10|| ||YouRang: <neveramaster: Does anyone have any opinions on this opening for White? It seems to yields a good advantage in space, but the risks are high.>|
Interesting question. I didn't see any glaring problems with white's opening, but more with the overall strategy: The opening clearly weakened white's kingside for the sake of an attack on black's kingside.
Then black wisely castled queenside which (1) gets his king to the other (safer) side of the board and (2) connects his rooks for offensive setup against white's kingside.
In short, black is poised for a kingside attack, and white's kingside is weak.
So what does white do? He inexplicably castles to the kingside <16.O-O?> -- arguably the last thing he should do! I figure that this is where the game was lost. <General rule: In games where the kings castle to opposite sides, the advantage goes to the side that is better poised for attack.>
|Mar-01-10|| ||johnlspouge: Monday (Very Easy)
J Arizmendi-Martinez vs J M Gomez Esteban, 2006 (36...?)
White to play and win.
Material: Down a P. White has a battery Rg8, Qg7, and Rg3 restricting the Black Kh2 to the h-file. With R before Q, a standard clearance is the primary candidate.
Candidates (36...): Rh3+
36…Rh3+ 37.Kxh3 Qg2+ 38.Kh4 Rh8+ 39.Qh6 Rxh6#
|Mar-01-10|| ||zb2cr: To <neveramaster>, |
You wrote: "Does anyone have any opinions on this opening for White? It seems to yields a good advantage in space, but the risks are high."
I think that White threw away any advantage he might have obtained from the opening by castling Kingside. Once Black was able to pen the position up, White's King was naked.
Edit--I see <YouRang> makes the same point.
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