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Aron Nimzowitsch vs Bjorn Nielsen
"Bjorn Under a Bad Sign" (game of the day Sep-13-2005)
simultaneous exhibition (1930), kopenhagen, Apr-10
Caro-Kann Defense: Karpov. Modern Variation Kasparov Attack (B17)  ·  1-0
ANALYSIS [x]

FEN COPIED

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sac: 22.Rxd6 PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Sep-13-05  who: 20...Bd6 while it looks natural is actually losing. 20...Bg5 is much better (Fritz).
Sep-13-05  Kola: Ouch!!! The right word! It really is painfull.
Sep-13-05
Premium Chessgames Member
  patzer2: Indeed 20...Bd6?? is the losing move, allowing White to use the pin 21. Rd7! as a deflection to force a mating attack on the weakened castled position. The pseudo sacrifice 23. Qf6 gxf6 24. Rg4+ Kh8 25. Bxf6# makes for a neat finish.

However, the best defensive move alternative to 20...Qd6?? appears to be 20...Bd8! 21. Rg4 g6 22. Qxd5 exd5 23. Rd7 f6 24. Bf4 f5 25. Rg3 Bf6 26. Rxd5 Rfd8 27. Rxd8+ Rxd8 = (0.06 @ 18 depth per Fritz 8).

Sep-13-05  lopium: Doesn't hurt that much compared to other games.
Sep-13-05  Elrathia Kingi: That's friggin' awesome. In what looks like a draw or tedious endgame at best, White grabs a sweet victory with an unexpected Queen advance. I haven't seen that in the puzzle books before. Nice!
Sep-13-05  Averageguy: What a wonderful tactical game by Nimzowitzch!
Sep-13-05  coolthing76: a very nice killer move.
Sep-13-05  ianD: Beautiful end position. Must have been a real shock. Black was thinking BxRd6
Sep-13-05  JohnBoy: I concur with all of the sentiments here - what a finish! Talk about getting hit in the face with a sledge hammer...
Sep-13-05  ajile: A bolt from the blue. Who could see such a beautiful move?
Sep-13-05
Premium Chessgames Member
  YouRang: Having his rook off the back rank, and ready to slide over to a weakened castled position gives Nimzo a fabulous queen sac tactic.
Sep-13-05
Premium Chessgames Member
  kevin86: After a series of moves focusing on d6,white threatens mate-an immediate dagger in the heart o black's game:Mate in two follows gxf6-and mate in one follows about everything else.
Sep-13-05
Premium Chessgames Member
  kevin86: Black CAN save the game by 23...♕xe5,but 24 ♕xe5 leaves black with two rooks vs a queen and a rook
Sep-13-05  belka: <A bolt from the blue. Who could see such a beautiful move?>

I might see it in the future now that I've seen it once All it took was 3 positional components, and look how simple they were!

1. bishop on the long open diagonal

2. an activated rook able to reach the open side of the half open g file

3. a weak f6 square (already on the long diagonal.)

All 3 combine to mean f6 belongs to White. When Black is castled kingside, that a great square to control.

Sep-13-05
Premium Chessgames Member
  YouRang: YouRang: After 19...Qd5, Nimzo already saw this queen sac combo. All he needed to do was deflect the bishop guarding f6. That was the point of 20. Rc7! The deflection worked (20...Bd6), except now the bishop is threatening White's bishop, which is also needed to make the queen sac work. So Nimzo pins the black bishop with 21. Rd7!, creating a 'side threat' to win the bishop.

Black unsuspectingly moves his rook to defend the bishop, but after eliminating the black bishop (22. Rxd6 Rxd6), White can spring the queen sac, 23. Qf6!! Black can survive only by losing his queen after 23...Qxe5 or 23...Bxe5.

Sep-13-05  EmperorAtahualpa: Nice game! chessgames.com could have made a nice puzzle out of this game actually...
Sep-13-05  briscola: Wow!!
Sep-15-05
Premium Chessgames Member
  YouRang: Perhaps Black's last chance to survive would have been to protect his bishop with the other rook (21...Rfd8 instead of ...Rad8). That way, he has f8 as an escape square.
Oct-22-08
Premium Chessgames Member
  tpstar: Accepting the Queen sacrifice with 23 ... gxf6 leads to a Morphy Mate after 24. Rg4+ Kh8 25. Bxf6#:


click for larger view

Good luck finding other Morphy Mates in the database, but here are some Morphy Concealed Mates which feature a Windmill before mating:

Reshevsky vs Shainswit, 1951
Kiss vs J Vianna, 1925
Winawer vs Shumov, 1875

Oct-26-08
Premium Chessgames Member
  tpstar: Another Morphy Mate = Owen vs Burn, 1887
Apr-21-09
Premium Chessgames Member
  tpstar: Another Morphy Mate = T Palmer vs D Moody, 1999
Jun-22-09
Premium Chessgames Member
  Travis Bickle: 23. Qf6 1-0 is a Fischerlike move!
Oct-04-09
Premium Chessgames Member
  An Englishman: Good Evening: What a way to treat the gentleman who would eventually write your biography!
May-16-11
Premium Chessgames Member
  notyetagm: Game Collection: notyetagm's favorite tactics
Aug-28-12  backrank: Quite strange that Nimzo admitted an IQP here, which he otherwise considered weak. Strategically, Black is playing well, blockading d5. However 19 ... Qd5 is weak, surrendering the 7th rank. 19 ... Rc8 instead looks quite satisfactory for Black.
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