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Ray Robson vs Rao Prasanna
Wch U10 (2004), Heraklio, rd 6, Nov-04
Sicilian Defense: Dragon Variation. Yugoslav Attack (B78)  ·  1-0



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Kibitzer's Corner
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Premium Chessgames Member
  Penguincw: Took me a while to get this puzzle, as 26.e6 is not easy to see (moves that give check are easier to calculate).
Nov-25-14  TheaN: Back from long gone (again), I'm looking forward at picking up the PotD more often.

This Tuesday starter was not necessarily difficult as the position simply screams for mate. White's attack breaks through by means of the thorning e-pawn: <25.e6 Bxh8 (else Qf7#) 26.Rxh8 with 27.Qf7# 1-0>. I hadn't actually envisioned Rxg8+ until I saw the solution.

The discussion whether e6 or Rxg8 is <better> is pointless. The game ends at move 27 and the mating pattern is the same for both move orders. The <reason> why one chooses one over the other is yet of great value.

I dismissed Rxg8+ at first glance because white sacrifices a very active rook for the piece in its pin. After 25.Rxg8 Kxg8 26.e6 white has a piece less in offense and only taken out a weak defender. All the threats on g8 are non-existent. If black had a way of protecting f7 this move order would not win immediately, whereas the other does.

As a thumb rule in attacks, bringing in more pieces with threats is usually more effective than boldly sacrificing pieces in the enemy position. If the latter doesn't lead to the former or mate, it is usually not good. 25.e6 is a typical piece engaging move: without compromising the attacking position white brings in the e-pawn, threatens mate on f7 and shuts off the kingside for black defenders. After 25....Bxh8 26.Rxh8, due to the h8 reload, White brought in a new offender (e6) and removed a black defender (Bg7).

I'll stop brabbling now. It's mate in three, 'nough said.

Nov-25-14  njdanie: Black's gotta play h5 before white can otherwise the Dragon gets crushed...
Premium Chessgames Member
  whiteshark: <Bobby Spassky: 25. e6! is good enough> 4 me, 2!
Nov-25-14  Amarande: 25 e6. Nail down the coffin. :)
Nov-25-14  vasja: The third possibility is 25. Qh7 and B on g8 falls if K makes a run then 25...Kf7 26. Qxg8+ Kg6 27 R(any)h6#
Premium Chessgames Member
  Bubo bubo: This is a nice one: Instead of spectacular sacs, a little pawn push does the trick: 25.e6!, and Black can only postpone the mate on f7 by one move: 25...Bxh8 26.Rxh8 and 27.Qf7#
Premium Chessgames Member
  LucB: <offramp:>

<How would you evaluate black's exchange sacrifice in this game?>


I'm surprised no one commented on this yet! Ha ha, good one!

You forgot to include the link!

Premium Chessgames Member

Here you are: N Resika vs E Kahn, 2001 with <13... ♖x♘c3>.

Nov-25-14  dfcx: 25.e6 Bxh8
26.Rxh8 and mate next
Premium Chessgames Member
  kevin86: the quiet pawn move seals black's fate.

My move was 25 ♕h7 is that a good solution?

Nov-25-14  wych: For me, 25.e6 is significantly more aesthetically pleasing than the alternative 25.Rxg8+.
Nov-25-14  starry2013: I won in no doubt a much more drawn out way

1.exf6 Bxh8 2.Rxh8 Nxf6 3.Bxg5 e5 4.Bh6+ Ke7 5.Qg7+ Ke6 6.Qg6 Ke7 7.Bg5 Kf8 8.Bxf6 Qxf6 9.Qxf6+ Ke8 10.Rxg8+ Kd7 11.Qf5+ Kc7 12.Rxc8+ Kb6 13.Rxc4 a5

or similar

1. exf6 2.Bxh8 Rxh8 3.Nxf6 Bxg5 4.e5 Bxf6 5.Qxf6 Qxf6+ 6.Ke8 Rxg8+ 7.Kd7 Rg7+ 8.Kc6 Na5+ 9.Kc5 Nxb7+ 10.Kd4 Nxd6 11.Rxc3 bxc3+ 12.Rxc3 Rxa7 13.Kd5 Ne4 14.Rxc2+ Kxc2

Nov-25-14  Checker2: I'm in good company in the e6 camp, although I first looked at the forcing check. Not only is e6 more aestetically pleasing, but with the choice of LSB or DSB bishop for the exchange sac, surely e6 nets the more interesting prisoner. At odds are the cleric's occupation and penchant for hanging out in dark places. 25.Qh7? Bxh8 and white has no time for e6.
Nov-25-14  LIzzard: Fell firmly into the e6 group - liked advancing the pawn into a space left so open for it with the bishop pinned.

<morfishine> - Certainly agree with your observations as well...

Nov-25-14  GoldenKnight: How about 25.Qh7?
Nov-25-14  WJW147: The joys of youth. 25.e6 was my first choice. The study of Chess has many coaches.
Premium Chessgames Member
  offramp: <LucB>, it seems only you and I did the survey!
Nov-25-14  goodevans: <GoldenKnight> (and others) <How about 25.Qh7?>

25.Qh7 is met with 25...Bxa8 and black survives a while longer.

Premium Chessgames Member
  FSR: I played 25.Rxg8+, but 25.e6 Bxh8 26.Rxh8, suggested by many, is equally good. White threatens three mates in one (27.Qf7, 27.Rxg8, and 27.Qxg8), each of which is unstoppable.
Premium Chessgames Member
  Zhbugnoimt: I first found 25.Rxg8+, then I saw 25.e6. Do I get double credit?
Nov-25-14  Checker2: Only two ways to mate. Again, Qh7 loses the exchange and the e pawn. There Fritz gives black as winning (-2) and white's best line is to reroute the rook to d3 to defend against what else? The exchange sac on f3!

No earlier opportunities as far as Fritz could see to (mere) depth 18 for <Offramp's> exchange sac, which I had to check out, after <Whiteshark's> spectacular game link. Rxf3 did appear as a move often in the side lines.

Nov-25-14  Castleinthesky: I got the e6 first version.
Nov-25-14  Pedro Fernandez: <<GoldenKnight>: How about 25.Qh7?> I did fall in the same "trap" my dear, lol! (mentally of course).
Nov-25-14  patzer2: Amazing play by then 9-year-old Ray Robson. Following 12...Rfc8?! (12...h5 = to ) 13. g4! , White's in complete control with an attack worthy of a seasoned GM.

After 18. e5! Ne8?! (18...Nxg4 19. fxg4 to ) 20. Qh2! , Black's busted.

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