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Rances Valdes vs Sami Laouini
Olympiad (2008), Dresden GER, rd 8, Nov-21
Sicilian Defense: Najdorf Variation (B90)  ·  1-0
ANALYSIS [x]

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Kibitzer's Corner
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Dec-15-08  zooter: first!!!

33.Rxh7+ Kxh7 34.Ra2+ Qh5 35.Rxh5# (all forced moves)

A rook sac on a monday being down a queen is a different way to start the week at cg :)

Dec-15-08  sleepyirv: 33.Rxh7+! An important mating pattern to remember. The knight creates something of a backrow mate on the file.
Dec-15-08
Premium Chessgames Member
  zenpharaohs: Well that was quick.

Technically white is not really a Queen down since he chose to sac the Queen with

32 Rxh6

which I think kills Black, although I haven't checked with an engine.

Dec-15-08
Premium Chessgames Member
  johnlspouge: Monday (Very Easy):

R Valdes vs S Laouini, 2008 (33.?)

White to play and win.

Material: B for Q+ P. Anastasia’s mate.

Candidates (33.): Rxh7+

33.Rxh7+ Kxh7 34.Rh2+ Qh5 35.Rxh5#

Dec-15-08  maxmax31: Black missed a check 32...Rf1 before taking the Queen.
Dec-15-08  zooter: <maxmax31: Black missed a check 32...Rf1 before taking the Queen.> Yeah, that would have probably finished white...
Dec-15-08  MiCrooks: can't get much more Monday than this one!!
Dec-15-08
Premium Chessgames Member
  johnlspouge: < <zooter> wrote: [snip] Yeah, that would have probably finished white... >

An impressively cautious statement, indeed. White is toast.

Dec-15-08
Premium Chessgames Member
  An Englishman: Good Evening: Anastasia pays us a visit on Monday. Nice of her to drop in.

There are a few interesting bits in the rest of the game. First, White played 9.Bxf6 so readily. Second, Black didn't play 18...Bxd6. My guess is that he feared 19.Ne4,Qc7; 20.Nxd6,Qxd6; 21.Nxe6. Third, White didn't lop off an Exchange with 21.Nxf8. Curious game.

Dec-15-08  MiCrooks: It is hard to believe that this occurred in the most recent Olypiad! Obviously not a good team and probably a low board, but STILL! With your life on the line you don't find Rf1+?! Rather you walk into an obvious forced mate?? A FIDE master?

Was this a skittles game? Were they already down to seconds on their clock?! Even if you were the rook sack hanging the queen would have drawn your attention to you own king, and you couldn't have failed to see that taking the Queen loses.

So what's the mystery here??

Dec-15-08  MostlyAverageJoe: This was even easier than clue#23 in the Chessgames Present Hunt Clues Page :-)
Dec-15-08  MiCrooks: The only possible explanation is that White had just over a minute left on his clock and Black was blitzing out moves trying to beat him on time.

Black had 11 minutes at the end of the games, so he certainly had time to look for and find Rf1+.

I need to live somewhere else so I can play in the Olypiad too!! There was an unrated from Angola (not moving there!) and a 1600 player from British Virgin Islands! (THAT I could handle!!)

Dec-15-08  NewLine: I had a hard time wondering what's wrong with 32..Rf1+, just to find out that this is actually winning... And you call this very easy monday...
This is some weird game.
Dec-15-08
Premium Chessgames Member
  dzechiel: White to play (33?). Black has queen and pawn for a bishop. "Very Easy."

Here's another example of when it really pays to have studied checkmating patterns. Experienced players will quickly see the "Anastasia's Mate" setup where the knight works in tandem with a black pawn to cut off all escape from the edge of the board.

White tears into the castled position of the black king with

33 Rxh7+

Black has only one legal response

33...Kxh7

And now

34 Rh2+ Qh5 35 Rxh5#

When I first saw this position, my eye went to the activity surrounding the black king. My first thought was, "This could be an Anastasia's Mate if I had another piece to give check on the h-file." I next looked around the rest of the board and saw the rook on e2. One last look to make sure that h2 was undefended by black and that black couldn't come up with a useful interposition, then off came the h-pawn.

But the only reason I could solve this so quickly is that I had seen this position MANY times in the past and was very familiar with this checkmate.

User <johnlspouge> has a collection of games that end in named mates here: Game Collection: Named Mates.

Players new to the game could do a lot worse than to look at the ends of these games and familiarize themselves with the mating patterns. The reason that they are named is because they show up over and over, and one day one of them will show up in one of your games. You want to be ready to spring the trap if it's your opponent about to be mated, and you want to be able to avoid the trap if it's you.

Dec-15-08  veerar: yes,very easy!
Dec-15-08  viky: I think this puzzle should be rated as too eazy without any stars!

33 Rxh7+ Kxh7 34 Rh2+ now black can sack his queen but with no effect..

Dec-15-08
Premium Chessgames Member
  agb2002: A well-known mate scheme: 33.Rxh7+ Kxh7 34.Rh2+ Qh5 35.Rxh5 mate.
Dec-15-08  Nullifidian: This one was easy to recognize. Anastasia's Mate is one of my favorite checkmate patterns.

33. ♖xh7+ ♔xh7 34. ♖h2+ ♕h5 36. ♖xh5#

Dec-15-08  hackmate: Yes, a nice one.
Dec-15-08
Premium Chessgames Member
  chrisowen: Spotted it almost immediately. The rook sac hustles the black king into retaking resulting in anastasia's mate. Neglect mating patterns at your peril.
Dec-15-08  costachess: 32. ... Rf1, 33.Re1 , if 33... Rxe1 34.Qxe1 Nxb3+ 35.axb3 and black is lost, if 33... gxh6, Qe5+
Dec-15-08
Premium Chessgames Member
  whiteshark: bingo!
Dec-15-08  costachess: continue, if 33... Ne6, 34.Rxf1 Qxe6 35 Rh7+
Dec-15-08  costachess: sorry, 35.Re6, not h7
Dec-15-08  costachess: but, what about 32...Rf1 33.Re1 Ne6 34 Rf1 g6. , ?
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