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Vitaly Chekhover vs Abram Model
"Check Over Your Model" (game of the day Nov-03-2019)
Leningrad Championship (1932), Leningrad URS, rd 10, Sep-22
Dutch Defense: Classical. Stonewall Variation (A95)  ·  1-0

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
Nov-02-04  themindset: 15.Bxd5+!!

this would make a great sunday puzzle.

Nov-03-19
Premium Chessgames Member
  An Englishman: Good Evening: The first two comments came exactly 15 years apart. One key point re: the sacrifice--if 16...Bd8; 17.e6 and 18.e7 will at least win a pawn when all is said and done.
Nov-03-19
Premium Chessgames Member
  al wazir: I thought 21...Rfe8 was a terrible move. I would have played 21...Rf6.
Nov-03-19
Premium Chessgames Member
  OhioChessFan: 21...Rfe8 was pretty much a resignation. But 21...Rf6 22. Nd4 Nd5 23. Qf3 is hopeless.
Nov-03-19  ossipossi: Not quote a wall of stone. The game is almost all played on the white squares
Nov-03-19
Premium Chessgames Member
  Breunor: OhioCjessFan, Stockfish agrees that your moves after 21... Rf6 are correct, but it gives an asessnent of 1.15. After 21 Rfe8 the score is over 3.
Jan-25-25  King.Arthur.Brazil: The king proposes the line: 15. Bxd5+ cxd5 16. Nxd5 Bd8 17. e6 Nf6 18. e7 (Re8? 19. exd8=Q Rxd8 20. Nxf6+ gxf6 21. Rxd8). 18... Bxe7 19. Nxe7+ Kh8 20. Nd5. It seems W is best.
Jan-25-25
Premium Chessgames Member
  An Englishman: Good Evening: Thought this one looked familiar. Still an interesting game, given how White conducted the attack on the light squares that Black thought he owned.
Jan-25-25  mel gibson: I couldn't see any worthwhile move.

Stockfish 17 says:

15. Bxd5+

(15. Bxd5+ (1.Bxd5+ cxd5 2.Nxd5 Bd8 3.e6 Re8 4.Bc7 Nf8 5.Bxd8 Bxe6 6.Nf4 Qf7 7.Ba5 Rac8 8.Qd3 Bd7 9.Bb4 Bc6 10.Bxf8 Qxf8 11.Rd2 g5 12.Nd5 Re5 13.Ne3 f4 14.Nc4 Re6 ) +1.29/58 831)

score for White +1.29 depth 58.

Jan-25-25  Mayankk: A closed position and something's gotta give. White seems to have two ideas 15 Bxd5+ cxd5 16 Nxd5 or 15 Nxd5 cxd5 16 Bxd5+. The Knight seems better at d5, threatening a variety of squares. So let's analyse the first line.

A) 16 ... Qf7/Rf7 17 Nc7 Rb8 18 e6 wins

B) 16 ... Bd8 17 e6 Nf6 18 e7 wins

C) 16 ... Ba3 17 Nc7 Rb8 18 e6 Nf6 19 Nb5 wins

D) 16 ... Bg5 17 Bxg5 hxg5 ( 17 ... Qxg5 18 Nc7 and 19 ... Ne6 is worse) 18 Nc7 Rb8 19 e6 looks very strong too

And so on. Basic theme seems to be that once we get in Nc7 and e6 in, Black is either down an exchange or a minor.

So yes, 15 ... Bxd5+ is worth a gamble.

Jan-25-25
Premium Chessgames Member
  scormus: d5 looked a clear a weakness for B so the natural candidates were 25 Bxd5+ or Nxd5, but I couldn't find anything decisive with either. Bx looked more promising, but I missed the forced recovery of material and the strength of W's resulting initiative.

Checking with SF confirms there is nothing for W after Nxd5. After 15 Bxd5+, B has a challenging defensive task to limit the damage. He slipped up with 21 Rfe8? but the position was difficult anyway.

Jan-25-25
Premium Chessgames Member
  chrisowen: Gaps its tow its mid borne its Bxd5+ afford pad id fog i faith aoh its a fig pug duck its be its Bxd5+ its ear
Jan-25-25  Socrates2: Not sure if black had to play 21. ...Rfe8
Jan-25-25
Premium Chessgames Member
  Honza Cervenka: Seemingly natural but quite tactically unfortunate retreat of Knight 13...Nd7? turned Model's Stonewall into a wall made of coprolite. 15.Bxd5 is just a temporary sacrifice, as black must give the piece back being thus a Pawn minus. 21...Rfe8 was a blunder, black apparently missed that after 23.Qf3 Qxf3 24.exf3 both his Rooks are still hanging and that he loses at least an Exchange. But this mistake just shortened his misery in this game.
Jan-25-25
Premium Chessgames Member
  Diocletian: I like the d5 square for either White's Bishop or Knight, and since the QP is begging to be taken with sacrifice, why not sacrifice the Rook there? 15. Rxd5 cxd5 16. Nxd5. The engine says 1) +0.11 (29) ply

1.Bg5 2. Bxg5 hxg5 3. Nc7 Rb8 4. e6 Nf6 5. Rd1 Bxe6 6. Nxe6 Rfe8....

Jan-25-25  Lloyd Gross: What’s wrong with 22. Qe5 threatening mate at g7?
Jan-25-25
Premium Chessgames Member
  chrisowen: Ass check saturday
Jan-25-25
Premium Chessgames Member
  beatgiant: <Lloyd Gross> 22. Qe5 walks into a pin and I don't see a follow-up after 22. Qe5 Qf7 23. Rd6 Nc8.

Even without that, why make a 1-move threat Black can just defend against, instead of the line in the game winning material?

Jan-25-25
Premium Chessgames Member
  chrisowen: No que tech nick aloof
Jan-25-25  TheaN: Didn't really have the patience to analyze everything through completely, but <15.Bxd5+ cxd5 16.Nxd5> followed by <e6 ±> eventually blasts the position wide open with White definitely calling the shots for a while.

It's almost imperative Black will have to give the piece back for e5, as the bishop is attacked and has to move (defensive moves fail on e6 or Nc7), e6 comes with e7 and you <need> to get rid of the forward scout or he'll wreak havoc in a few moves. If there is a weird way Black can tangle himself up to keep the material advantage, White has the active pieces. According to the engine it's the best move, but White really only comes out a pawn up.

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