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NN vs Robert Crepeaux
Nice (1923), Nice FRA
Bird Opening: Dutch Variation (A03)  ·  0-1

ANALYSIS [x]

FEN COPIED

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sac: 11...Qxh2+ PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 3 OF 4 ·  Later Kibitzing>
Jan-07-05
Premium Chessgames Member
  Sneaky: I knew that the answer had to be Qxh2+ but I kept trying to make 13...Nfg5+ work, and incredibly it doesn't work at all.
Jan-07-05  dac1990: We can, just for fun, apply the seven degrees of chess separation and trace the line Crepeaux --> Frederic Lazard --> Alexander Alekhine --> Max Euwe --> Efim Geller --> Garry Kasparov. Thus, Crepeaux has a CDS (Chess Degree of Separation) of six.
Jan-07-05  LIFE Master AJ: Cool game ... but also (nearly) a photo-copy (with colors reversed) of the Ed. Lasker - Sir G.A. Thomas game ... mentioned by many others. <alogo>
Jan-08-05  eghagstrom: White can avoid the whole mess with 10 Bxe4. His blunder lost the game. Crepeaux just mopped up after.
Jan-08-05  SouCapi: <maxundmoritz> Yes, you´re right. With 16.Kh5 white escapes from the mating net. Thanks.
Feb-08-05  LIFE Master AJ: One guy e-mailed me ... asking why White resigned. (Is this a joke?)

Black has several mating threats. (...Nh7; ...Ne4; and if the Knight on d5 moves, ...Be7; mate.) White cannot possibly meet them all.

Apr-06-08  Octal: White's pawn structure resembled that of the Sicilian Dragon.
Jun-12-08  ravel5184: I wish I had a "brilliant moves" section on my bio to put 16 ... Kf8 on!
Jan-14-09  WhiteRook48: I could believe that the kings were in opposition, but on move 16??
May-02-11  tacticalmonster: 16 Kf8 looks nice but White has a much better continuation: 11 Qxh2+ 12 Kxh2 Nxf3++ 13 Kh3 Neg5+ < 14 Kg4 f5+! > 15 Kh5 (15 Kxf5 g6+ 16 Kf6 (16 Kg4 h5#) 0-0# ) g6+ 16 Kh6 Bf8+ 17 Bg7 Nf7#
Sep-15-17
Premium Chessgames Member
  Phony Benoni: No one who remembers the Lasker - Thomas game could fail to consider 11..Qxh2+ 12.Kxh2 Nxf3+, forcing the king walk with with 13.Kh3 (13.Kh1 Ng3#).
Sep-15-17
Premium Chessgames Member
  FSR: 11...Qxh2+ 12.Kxh2 Nxf3+ 13.Kh3 (13.Kh1 Ng3#) Neg5+ 14.Kg4 h5+ 15.Kf5 g6+ 16.Kf6 Kf8! 17.gxf3 Nh7#
Sep-15-17  ChessHigherCat: Queen sac Friday!:

11....Qxh2+ 12. Kxh2 Nxf3+ 13. Kh1 Ng3#

or this can't be the fastest way but it works:

11... Qxh2+ 12. Kxh2 Nxf3+ 13. Kh3 Neg5+ 14. Kg4 h5+ 15. Kf5 g6+ 16. Kf6 Nh7+ 17. Kg7 O-O-O 18. Kxf7 Nfg5+ 19. Kxg6 Rdg8+ 20. Kxh5 Nf6#

Sep-15-17  ChessHigherCat: Here's a much faster second variant: Qxh2+ 12. Kxh2 Nxf3+ 13. Kh3 Nfg5+ 14. Kh4 (14. Kg4 f5+ 15. Kxf5 [15. Rxf5 h5+ 16. Kh4 Bg3#] g6+ 16. Kg4 h5+ 17. Kh4 Bg3#) Bg3+ 15. Kg4 h5+ 16. Kf5 g6#
Sep-15-17  ChessHigherCat: Here's another subvariant I forgot to cover (I keep going back to bed and these nagging subvariants make me get up again):

11. Nxd5 Qxh2+ 12. Kxh2 Nxf3+ 13. Kh3 Nfg5+ 14. Kg4 f5+ 15. Kh5 g6+ 16. Kh6 Bf8+ 17. Bg7 Nf7#

Have I finally covered everything?

Sep-15-17
Premium Chessgames Member
  al wazir: Easy-peasy: 11...Ng4.

Regardless of which ♘ white captures, black will play 12...Qxh3#.

If 12. Re1, then 12...Qxh2+ 13. Kf1 Ng3#. If 12. h3, then 12...Bh2+ 13. Kh1 Ng3#.

Sep-15-17  Walter Glattke: 11.-Ne2+ 12.Qxe2 Bxh2+ 13.Kh1 Bg3+ 14.Kg1 Qh2# In the 1980ies Alksej Suetin descrived this mate in a Marshall Gambit part of his book. The Bishop overtakes the guarding of f2 for playing Qh2.
Sep-15-17  Walter Glattke: Sorry, I am wrong.
Sep-15-17  Walter Glattke: 11.-Nxf3+ 12.Rxf3 Bxh2+ 13.Kf1!
11.-Ng4 (al wazir) is the best answer.
Sep-15-17  nalinw: <al wazir>

11. .. Ng4
12. Rf2

... seems to avoid mate but at the cost of a Rook and more ....

Sep-15-17  ozmikey: Funny how one keeps going back to similar "examples" - I had the fixed idea of connecting the rooks, and only considered 16...Be7+ 17.Nxe7 Ne4+ 18.Kg7 Kxe7 and mate after a couple of checks. Works, but certainly not the quickest!
Sep-15-17  DarthStapler: I was sure it was Nxf3+ Rxf3 (if any other move Qxh2#) Qxh2+ Kf1 Qh1+ Ke2 Qxg2+ then black wins (Rf2 Qxf2+, Ke1 Bg3+ Rxg3 Qxg3+, Kd3 Nf2+). Can anyone explain what's wrong with my reasoning here?
Sep-15-17  AlicesKnight: The Q sacrifice is followed by some nice horseplay and all the work is done by minors (apart from the R supporting the RP). The 'quiet' final move is another good point.
Sep-15-17  SpamIAm: <nalinw>, even that doesn't stop mate. 11...Ng4 12.Rf2 Qh2+ 13.Kf1 Ng3+ 14.Ke1 Qg1(h1)+ 15.Rf1 Qf1# Congrats, <al wazir>. 11...Qh2+ is flashy but deserves a "!?" instead of a straight "!". Your move leads to quicker mate. :)
Sep-15-17  gofer: Well, this one seemed obvious <11 ... Nxf3+> followed by all sorts of possible things, but the things I found were not so great. So after a couple of minutes, I found the mate in seven. Having NN as white helped a lot!

<11 ... Qxh2+>

<12 Kxh2 Nxf3++>

<13 Kh3 Neg5+> (Kh1 Ng3#)

<14 Kg4 h5+>

<15 Kf5 g6+>

<16 Kf6 ...>


click for larger view

Okay, so good so far, but 16 ... Be5+ isn't mate, so we need to find another check which could be Ne4+ or Nh7+, but before we can do that we need to stop the white king's escape route to g7. So instead of the immediate check we complete the mating net.

<16 ... Kf8>
<17 any move! Nh7#>

Much easier than yesterday, because unlike everyone else I missed Qg5 and played Rfd8 instead...

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