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Daniel Stellwagen vs Ioan Rees
European Team Championship (2009), Novi Sad SRB, rd 1, Oct-22
French Defense: Rubinstein Variation. Blackburne Defense (C10)  ·  1-0

ANALYSIS [x]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 3 OF 3 ·  Later Kibitzing>
Nov-10-09  Patriot: Definitely easy. 21.Nxf7 and the queen is lost. 21...Kxf7 and the king is lost (22.Qxe6#)! No need to look further.
Nov-10-09  jsheedy: 21. Nxf7 and Black can hang it up. Threatens the paralyzed Queen, and if 21...Kxf7, 22. Qxe6#.
Nov-10-09  patzer2: <OfficePlayer> While pawn grabbing is often not a good idea, in this game it appears Black went wrong by not doing it a second time with 16...Qxd4! when Friz gives one strong possibility as 17. Bg5 g6 18. Rad1 Qc5 = to .

Also playable were 15...Qxd4 = and 17...Qxd4 = to .

Of course the obvious losing blunder was 20...Nd7?? However, according to Fritz ,after 20... Nd5 21. Qf3 f6 22. gxf6 Bxf6 23. Bb5 c6 24. Nxc6 bxc6 25. Bxc6 Bd7 26. Bxa8 Qxa8 27. c4 Kf7 28. cxd5 Qxd5 29. Qxd5 exd5 30. Rxe8 White is up an exchange and has all the winning endgame chances.

Nov-10-09  RandomVisitor: After 21.Bxg6!?

1: D Stellwagen - I Rees, 17th European Team Championship 2009


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Analysis by Rybka 3 :

<+9.27] d=17 21...hxg6> 22.Nxf7 02:05:55 791805kN

Nov-10-09  patzer2: <RV> What does Rybka 3 show as possible improvements for Black? Is 16...Qxd4 one of its recommendations?
Nov-10-09  RandomVisitor: <patzer2>Rybka set to 30 seconds a move finds the following suggested improvements for black:

13...0-0, 14...Qd5, 15...Qxd4, 16...Qxd4, 17...Qxd4, 18...Nd5, 20...Nd5.

Nov-10-09  muralman: Got that one instantly, a lot quicker than yesterday.
Nov-10-09  Summerfruit: Black is a pawn up.

21.Nxf7 wins the queen, as

21...Kxf7 22.Qxe6#

Nov-10-09  Hortensius: How not to play an opening in chess: Move your queen 6 times in only 14 moves...
Nov-10-09  patzer2: <RV> Thanks!
Nov-10-09  patzer2: <Hortensius> Actually if Black had moved it one more time with 16...Qxd4! he would have been OK.
Nov-10-09  christosN: White should have played 16.Rad1 and 17.Qh3

Did he get the move order wrong?

Nov-10-09  YouRang: I found 21.Nxf7 to be immediately attractive because of the queen mate potential, although it wasn't until the 2nd pass that I noticed that it was also immune to capture because Pe6 was guarded by the rook (21...Kxf7? 22.Qxe6#).

So white gives us an example of winning a queen in broad daylight, and black responded with a fine example of justified resignation.

Nov-10-09  BOSTER: <dzechiel> <Don't take a queen knight pawn with a queen...> . <dumbdal> .<I agree>. But let me disagree.
The very sharp variation in Sicilian ("Poisoned pawn accepted") is build to sacr. b2 pawn, and very strong players like Portisch, Fischer, Kasparov playing as black took it.
Nov-10-09  victinho: Very easy for today... Nxf7! :D
Nov-10-09  RandomVisitor: 3 minutes per move:

D Stellwagen (2630) - I Rees (2336)
[C10]

17th European Team Championship Novi Sad SRB (1), 22.10.2009

[Rybka 3 ]

1.e4 e6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nd7 5.Nf3 Ngf6 6.Bd3 Nxe4 7.Bxe4 Nf6 8.Bg5 Qd6 9.Bd3 Qb4+ 10.Bd2 Qxb2 11.0-0 Qa3 last book move

12.Re1 -0.08/18 Be7 0.10/16
13.Ne5= -0.16/17
[Rybka 3 : 13.Re3 c6 14.Qb1 Qd6 15.c3 g6 16.Ne5 Nd7 17.Nc4 Qd5 18.Rf3= 0.10/16 ]

13...Qd6 0.29/17
[Rybka 3 : 13...0-0 14.Qf3 Qd6= -0.16/17 ]

14.Bf4 0.09/18 Qd8 0.29/16
15.Qf3= -0.05/16
[Rybka 3 : 15.c3 Nd5 16.Bd2 0-0 17.c4 Nf6 18.Bc3 Nd7 19.Qc2 f5 20.Nf3 Nb6 21.a4 a5 22.h3 0.29/16 ]

15...0-0= 0.19/16
[Rybka 3 : 15...Qxd4 16.Bb5+ Kf8 17.Rad1 Qb4 18.Bc4 h6 19.h3 Bd6 20.c3 Qc5 21.Rd4 Kg8 22.Bb3 Rb8= -0.05/16 ]

16.Qh3 -0.60/16
[Rybka 3 : 16.Rad1 Nd5 17.Bd2 f5 18.c4 Nf6 19.Qe3 Bd6 20.Bc3 Qe8 21.Bc2 b5 22.cxb5= 0.19/16 ]

16...g6 0.32/17
[Rybka 3 : 16...Qxd4 17.Bg5 g6 18.Rab1 Qc5 19.Qf3 Qd5 20.Qh3 Qd4 21.c3 Qd6 22.Qh6 Ne8 23.Bh4 Bxh4 24.Qxh4 Qc5 -0.60/16 ]

17.Rad1= 0.00/16
[Rybka 3 : 17.c3 Nd5 18.Bh6 Re8 19.Bd2 Rf8 20.Rad1 Bg5 21.c4 Bxd2 22.Rxd2 Ne7 23.Qe3 Qd6 24.c5 Qd8 25.Be4 f6 0.32/17 ]

17...Re8 0.53/15
[Rybka 3 : 17...Qxd4 18.Bh6 Qb2 19.Bxf8 Bxf8 20.Qf3 Kg7= 0.00/16 ]

18.Bh6 0.30/15
[Rybka 3 : 18.Be3 Qd6 19.Bg5 Nh5 20.Bc1 Rf8 21.c3 c6 22.Bh6 Ng7 23.Bf4 Qd5 24.c4 0.53/15 ]

18...Nh5 1.18/19
[Rybka 3 : 18...Nd5 19.c4 Nb6 20.Qg3 Bh4 21.Qe3 f5 22.Rb1 0.30/15 ]

19.g4 1.18/19 Nf6 1.18/18
20.g5 0.87/17 Nd7? 8.27/13
[Rybka 3 : 20...Nd5 21.Qf3 Rf8 22.Bxf8 Qxf8 23.c4 Nc3 24.Bxg6 hxg6 25.Qxc3 Bxg5 26.Re4 Qe7 27.Qf3 Rb8 28.Rg4 Bf6 29.Rg3 Bg7 30.Qe3 0.87/17 ]

21.Nxf7 7.74/12 1-0

Nov-10-09  David2009: Tuesday's puzzle Stellwagen vs I Rees, 2009 White 21?

21 Nxf7 nets Q for N 1-0 (21...KxN allows Qxe6#). I will be neither the first nor the last to spot this.
===
Yes. I even foresaw Black's reply.

Nov-10-09  WhiteRook48: 21 NxP that was pretty easy
Nov-10-09  antharis: 21. Nxf7 wins the Queen because 21... Kxf7 fails due to 22. Qxe6#.
Nov-10-09
Premium Chessgames Member
  benveniste: I managed to completely miss ♕xe6# after ♔xf7! I followed with ♗xg6+, which I believe forces mate as well.

Credit or no credit?

Nov-10-09  TheaN: Tuesday 11 November 2009

<21.?>

Target: 1:25;000
Taken: 0:26;268
Birdie: -10s <> -1m

Material: Black up, ♙

Candidates: Bg7, Bf8, Bxg6, <[Nxf7]>

-ML-
This position is striking. At the cost of only ONE pawn, White has six active pieces, all of them, and Black has NO active pieces. That is asking for trouble, and Black gets it whilst still completely undeveloped: I looked at some useless spite moves until the keymove hit, and then the puzzle seems too simple. White wins easily with:

<21.Nxf7 > which attacks the trapped Black Queen, trapped mainly due to the underdevelopment of Black. Black can only safe his Queen, 21....Kxf7, at the cost of his King: 22.Qxe6 1-0. Cannot advise that, and after an inevitable 22.Nxd8 , White will roll up Black quickly.

Nov-10-09  TheaN: 2/2

Just to clarify, the 22.Qxe6 1-0 simply has to be 22.Qxe6 1-0 ^^, used the wrong simple, I did see it was mate. Even without an immediate mate, Black would be toast though.

About the game: although I cannot approve of Black's game, I'm flabbergasted at the fact that Black is quite a bit better after 16.Qh3 with 16....Qxd4... bizarre. Although one might argue that at that point, Black is up two pawns only evaluating -0.6, so he still has a +1,4 to defend position wise.

Nov-10-09  dzechiel: <BOSTER: <dzechiel> <Don't take a queen knight pawn with a queen...> . <dumbdal> .<I agree>. But let me disagree. The very sharp variation in Sicilian ("Poisoned pawn accepted") is build to sacr. b2 pawn, and very strong players like Portisch, Fischer, Kasparov playing as black took it.>

This is, of course, the exception that proves the rule. But, please note that my admonition was directed towards players new to chess, and for them the advice is sound.

Nov-10-09  Ghostdog4: At first I looked at Nxg6 with possible mating attacks depending on blacks move; however, Nxf7 is the move.
Nov-12-09  Formula7: <benveniste> 21.Nxf7 Kxf7 22.Bxg6+ does indeed win: according to Rybka it's mate in seven, e.g. 22...Kxg6 23.Qd3+ Kh5 24.Qxh7 Nf6 25.gxf6 Rg8+ 26.Bg7+ Kg5 27.Re5+ Kg4 28.Qe4+ Kh3 29.Rd3#.
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