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Kevin Spraggett vs Patricia Llaneza-Vega
San Sebastian Open (2007), Donostia-San Sebastian
King's Indian Attack: Symmetrical Defense (A05)  ·  1-0

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Jul-14-17  morfishine: Its all forced: <17.Qxh5+>, <18.Nxf4+>, <19.h4+>, <20.Kh2> and mate next move

With White's DSB covering one escape route <f6> while the White Knight soon covers the other escape route <g6>, its pretty easy to visualize this forcing sequence

*****

Jul-14-17  belgradegambit: Very,very easy for a Friday.
Jul-14-17  saturn2: I saw the mating net. I dont remember any week were I got from monday to friday with similar ease.
Jul-14-17  Nietzowitsch: And when you gaze long into an abyss the abyss also gazes into you.
Jul-14-17
Premium Chessgames Member
  WorstPlayerEver: And when you gaze even longer into an abyss then Nimzo will gaze back at you ☺
Jul-14-17
Premium Chessgames Member
  Once: Maybe not so forced after all. We have to remember that white starts the position down by a minor piece. So as a few kibbitzers have pointed out, black escapes the mate with 17...Kh7.

White is a pawn up and with a better position, but it's not a mate.

Jul-14-17  eyalbd: Easy for Friday. Qxh5 almost plays itself. Finding Kh2 at the end is the only tricky thing here but not too difficult.
Jul-14-17
Premium Chessgames Member
  kevin86: Queen sac on Friday! Nice finish by Spraggett.
Jul-14-17
Premium Chessgames Member
  drollere: sorting through the clutter of pieces is the first difficulty. once 17. Qxh5+ puts the black K on h5, then 18. Nxf4+ closes off the retreat square; 19. h4+ and 20. Bf3+ add more worries but the K still has Kxg3 to avoid mate, which 20. Kh2 will nullify.

a farseeing K can retreat to h7, which has to be looked at, although white has Bxf7 followed by Nxf4 with a pawn up, superiority of space and a menacing N (Nxe6 with K or Q check).

Jul-14-17
Premium Chessgames Member
  LucB: This sort reminds me of what could have happened to Pachman (Petrosian vs Pachman, 1961) or Myagmarsuren (Fischer vs Myagmarsuren, 1967).
Jul-14-17
Premium Chessgames Member
  LucB: Has CG decided to give us a break this week? I hardly ever know what's going on on Friday puzzles.
Jul-14-17  bla bla: OH MY GOD
Jul-14-17  AlicesKnight: <LucB: This sort reminds me of what could have happened to Pachman (Petrosian vs Pachman, 1961) or Myagmarsuren (Fischer vs Myagmarsuren, 1967)> - very nice; we could go on, I'm sure, but also Averbakh vs Kotov, 1953 - another King sucked into a trap with Q sacrifice....
Jul-14-17  swclark25: someone (maybe <eyalbd>) please explain why 20)Kh2 is preferred over 20)Bh3++ ??
Jul-14-17
Premium Chessgames Member
  Once: <swclark25> 20. Bh3+? Kxg3 when black is winning.
Jul-14-17  swclark25: Thanks <Once>. "I see said the blind man!" Kh2 then Bh3#.
Jul-14-17  eezzell: I'm confused. After 17...Kxh5, the mate is obvious. Why would a strong player accept the queen?
Jul-14-17
Premium Chessgames Member
  Diademas: If this was a Monday I would have seen this in a sec. Now I didn't see it at all...
Jul-14-17
Premium Chessgames Member
  ajk68: I think the critical move in the calculation is Kh2. It's not a forcing move, but it seals the deal.

Most likely black did not see a forcing continuation and overlooked the quiet move.

Jul-14-17  john barleycorn: <Diademas: If this was a Monday ...>

Do not worry as the next monday will come for sure, like taxes, death etc.

Jul-14-17
Premium Chessgames Member
  perfidious: <john b: <Diademas: If this was a Monday ...>

Do not worry as the next monday will come for sure, like taxes, death etc.>

One reason to look forward to Mondays...(laughs)

Jul-14-17  john barleycorn: <perfidios> I decided to start my week with a tuesday (I am a real progressive mind) and thus be one day closer to the weekend.

maybe, I can set an overall trend sooner ... or later ....

Jul-14-17  luzhin: From the point of view of the problemist, there is a 'dual solution' with 20.Kf2, which also leads to mate next move with 21.Bh3
Jul-14-17  morfishine: Correct, not forced, which puts the onus on Black as to why it was accepted, since age was not a factor...

*****

Jul-14-17  cormier:


click for larger view

Analysis by Houdini 4: d22

1. (2.53): 18...Bf7 19.Qe2

2. (2.67): 18...Qe8 19.Bxg7 Kxg7

3. (3.03): 18...Bxb2 19.Qg6+

4. (3.47): 18...Qf7 19.Bxg7 Kxg7 20.Bd5 Nd8 21.Qh4 c6 22.Bg2 Kg8 23.Qxh6 Qf6 24.Qxf6 Rxf6 25.Rae1 Bf7 26.Bh3 Ra6 27.Kg2 d5 28.cxd5 cxd5 29.Rc1 Rab6 30.Rc8 Rfd6 31.b4 axb4 32.axb4 d4 33.exd4 Rb5 34.d5 Bxd5+ 35.Nxd5 Rdxd5 36.Bxf5 Rxf5 37.Rxd8+ Kf7 38.Rxf5+ Rxf5 39.Rd7+ Ke6 40.Rxb7

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