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Li Chao vs Giga Quparadze
World Blitz Championship (2017) (blitz), Riyadh KSA, rd 13, Dec-30
Nimzo-Indian Defense: Three Knights Variation (E21)  ·  0-1

ANALYSIS [x]

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Kibitzer's Corner
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Apr-10-18  Cheapo by the Dozen: Windmill!
Apr-10-18  Cheapo by the Dozen: Or perhaps I should say:

Schlagmuehle!!

(Muehle is the German name for "The Mill Game", aka "Nine Men's Morris".)

And this is spooky -- as I've posted before, when my grandmother was a little girl she met Emmanuel Lasker, and played some Muehle with him. According to Wikipedia, he was interested enough in the game to invent a complex variant of it. I really wish Wikipedia had already existed when my grandmother was alive ...

Apr-10-18  Walter Glattke: Butcher's Party with 40.-Rxg3+ 41.Kh2 Rg2+ 42.Kh1 Rf2+ more material for black.
Apr-10-18  saturn2: By 38. Qxg2 black wins material.
The only thing I had to look at a bit was if 40..RxB+ is possible or 40..Rf2+ is necessary. But Black can even get bishop.
Apr-10-18
Premium Chessgames Member
  whiteshark: In chess, <a windmill> is a tactic in which a combination of discovered checks and regular checks, usually by a rook and a bishop, can win massive amounts of material. This tactic is also sometimes referred to as <a see-saw>.
Apr-10-18  AlicesKnight: After 38.... Qxg2+ a good old pendulum will wipe out all White's pieces.
Apr-10-18  leRevenant: A small step for a chess player but a Giga step for a Quadruped.
Apr-10-18
Premium Chessgames Member
  malt: 38...Q:g2+ 39.R:g2 R:g2+ 40.Kh1 R:g3+ 41.Kh2 Rg2+ 42.Kh1 Rf2+

picks up the Queen

Apr-10-18  morfishine: <38...Qxg2+> leads to a deadly windmill sweeping all of White's pieces off the board

*****

Apr-10-18
Premium Chessgames Member
  Oxspawn: Could not see an immediate mate but the cruel death by 1,000 cuts

38... Qxg2+
39 Rxg2 Rxg2+
40 Kh1 Rxg3+
41 Kh2 Rg2+
42 Kh1 Rf2+
43 Kg1 Rxf7
44. K: “Come back and fight you coward.”

Apr-10-18
Premium Chessgames Member
  Oxspawn: <whiteshark: This tactic is sometimes referred to as a see-saw> A perfect name for this - more descriptive than windmill and the saw has sharp teeth.
Apr-10-18  eblunt: In fact after removing the White bishop, black could play 42 ... Rxa2 + instead, and leave the queen on the board and still win comfortably. With the Rook on b1 just march the pawn down. The Bishop on e4 controls everything.
Apr-10-18
Premium Chessgames Member
  whittaker: <ChessHigherCat> Actually I don't think there's a perpetual after 39 ... Bxg2 40. Qf5+ Kg8 41. Qe6+ Kh8 42. Qe8+ Kh7, so that line also wins for Black
Apr-10-18  morfishine: Yes the term 'See-Saw' is more accurate: Black saw it, but White didn't see it...

*****

Apr-10-18  patzer2: The clear losing move for Black was 27. Qc3?, allowing a winning discovered attack with 27...Rc2! -+ (-1.95 @ 27 ply, Stockfish 9 analysis of move 27...?).

Instead, White should have played 27. Bd2! = (-0.08 @ 21 ply, Stockfish 9 analysis of move 27.?).

P.S.: After 27. Bd2! the Bishop is poison because of 27...Rxd2?? 28. Qf8 + +- (forces mate-in-three).

Apr-10-18  patzer2: Black's 28...Nc4!, undermining the overworked White Queen and forcing a winning material exchange, is a pretty and instructive move.
Apr-10-18  ChessHigherCat: <whittaker> You're right, I just saw the King couldn't escape to f8

38...Bxg2 39. Qf5+ Kg8 40. Qe6+ Kf8 41. Bd6#

and saw the other perpetuals so I assumed it was important to prevent Qf5:

Apr-10-18  ChessHigherCat: By "other perpetuals" I mean Q5f5+ g6 Qg6+ etc. and Qf5+ Kh8 Qf8+ Kh7, Qf5+ and the whole line seemed too messy compared to Qxg2 so I didn't analyze further.

SF says the best option in case of Bxg2 is Qf5+ Kg8 QxR, RxQ, which wins, too, but is a lot slower.

Apr-10-18  mel gibson: Any easy finish.
White has no pieces left &
the black d5 pawn ready to march down
if a bishop & Rook are not enough to win quickly.
Apr-10-18
Premium Chessgames Member
  gawain: I saw the decisive combination winning R and Q for Q but failed to notice that Black can snarf up all of the White pieces, even the bishop, by repeating the pattern. Good one for Tuesday.
Apr-10-18  swclark25: <leRevenant A small step for a chess player but a Giga step for a Quadruped.> I like it! maybe even "A small step for a Li'l chess player but a Giga step for a Quadruped.>
Apr-10-18  sfm: <patzer2: The clear losing move ... was 27. Qc3? etc.> Thank you. Please keep posting info like this.
Apr-10-18
Premium Chessgames Member
  takchess: TGIT (tuesday) . I love a nice seesaw.
Apr-10-18  patzer2: <sfm> You're welcome. I'm trying to get my two young Grandson's who are active scholastic tournament players to do more and better analysis of their own games and Master games to find out where they might improve.

Practice here at chessgames.com in finding key turning points in featured games helps me to help them.

Apr-11-18
Premium Chessgames Member
  Penguincw: Once again, solving a Tuesday puzzle on a Wednesday. But I still got it. Nice windmill tactic, picking up material.

And I noticed <whiteshark> has a lovely collection on windmills: Game Collection: 668 windmill (discovered checks).

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