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Jorge Viterbo Ferreira vs Marin Bosiocic
European Team Championship (2017), Hersonissos GRE, rd 1, Oct-28
Nimzo-Indian Defense: Reshevsky Variation (E46)  ·  0-1

ANALYSIS [x]

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Kibitzer's Corner
Nov-01-19
Premium Chessgames Member
  al wazir: I got 27...Rd8 28. Qxb7 Rd2 29. Qa8+. but then I planned on 29...Bf8 instead of 29...Bd8. I'm not sure how much difference it makes.

As white I would probably have played Rxe4 at this point. After 28. Nc4 the ♖ sac on h2 and the subsequent mating attack are pretty straightforward.

Nov-01-19
Premium Chessgames Member
  Kay Sadeeya: Pretty nifty attack by black.
Nov-01-19
Premium Chessgames Member
  patzer2: Jeremy Silman in his Great Courses college lectures on learning chess emphasizes looking for the move the position calls out for you play. For today's Friday Nov 1, 2019 puzzle, I think the position cries out for 27...Rd8! to be played.

After finding 27...Rd8! it was easy to play guess the move for all but one move of Black's winning combination.

That move where I deviated from the game continuation was 29...Bd8 -+ (-4.79 @ 28 ply, Stockfish 10). Instead, I played 29...Bf8 -+ (-7.25 @ 28 ply, Stockfish 10).

After seeing how the game continued, it doesn't appear to make any difference. Black wins easy with 29...Bd8 -+ or 29...Bf8 -+.

P.S.: White's decisive mistake was the pawn grab 27. Qxd5? allowing 28...Rd8 -+ (-3.32 @ 33 ply, Stockfish 10).

Instead, 27. Nf3 Qc5 28. b4 = (0.00 @ 37 ply, Stockfish 10) keeps the game level.

Nov-01-19  mel gibson: I didn't even consider that move -
I was thinking of 27... R-f8
but the computer calls that a draw.

Stockfish 10 agrees with the actual game:

27... Rd8

(27. .. Rd8 (♖a8-d8 ♘e5-d7 ♖f4xf1+ ♖a1xf1 ♕e3-e2 ♕d5-d3 ♕e2xd3 ♗c2xd3 ♖d8xd7 ♗d3-c4 ♖d7-d6 a3-a4 ♖d6-c6 ♗c4-d5 ♖c6-c5 ♗d5-c4 ♖c5xc4 b3xc4 ♘g7-f5 ♖f1-b1 ♗e7-b4 ♖b1-d1 b7-b6 ♗b2-f6 ♘e6-c5 ♖d1-d8+ ♔g8-f7 ♔h1-g2 ♘c5xa4 ♖d8-d7+ ♔f7-e6 ♖d7xh7 ♘a4-c5 h2-h4 ♘f5-e3+ ♔g2-f3 ♘e3xc4 ♗f6-h8 ♘c5-d7 h4-h5 g6xh5 g5-g6 ♘d7-e5+ ♗h8xe5 ♘c4xe5+ ♔f3-e4 ♘e5xg6 ♖h7xh5 a5-a4 ♖h5-h6 ♔e6-f6 ♔e4-d5 ♗b4-c5 ♖h6-h1 ♘g6-f4+ ♔d5-c4 ♔f6-e5 ♖h1-h8 ♔e5-d6 ♖h8-a8 a4-a3 ♔c4-b3 ♔d6-d5) +3.19/38 106)

score for Black +3.19 depth 38

Nov-01-19
Premium Chessgames Member
  mig55: After Nf4 it was mate in five, and white did not see that???
Nov-01-19  eaglewing: Question for Stockfish: What is devastating following 27. Qxd5 Rd8 28. Nc4 Qe2 29. Qg2 (or on the way)?
Nov-01-19  mel gibson: < eaglewing: Question for Stockfish: What is devastating following 27. Qxd5 Rd8 28. Nc4 Qe2 29. Qg2 (or on the way)?>

Stockfish 10 is free to download and use.
The Arena interface to run the Stockfish engine is also free. Try it.

Nov-01-19
Premium Chessgames Member
  laskereshevsky: My rules is: First think and after check the engines... In this way I see the firsts 2 moves from a neuronical point of view

27...♖d8 being impossible to attack the king lets attack the strongest enemy piece activating the passive ♖a8...

28.♕xb7 avoid the capture, remaining in control of the sensitive h1-a8 diagonal grabbing a pawn and threatening the ♗e7

28...♖c2 tactically counter the ♕ attack on e7 with a threat on ♗c2 (and subsequently on th ♗b2 ), strategically keep control of the 7th rank (Nimzo docet!)..BTW thats cause the good looking defensive move 27♕g2 dsnt work...

And now many moves are possible, just the ˇheavy pieces diagonalˇ d2-f4 looks too much dangerously close the king, ( ♖xh2+ ♖h4 ♕e2 ♕h3 are all potential threats), even the other pieces could arrive in suporting the attack ( ♘f4 & ♘d4 .. ♗d6 & ♗c5})...

Here i can not see how W could face all this threats, probally is already lost.... so lets check the game

period

Ok, i do not understaand why is good 29.♕a8+ wich only allow black to made save the only(!) week point in the B's position, the undefended ♗e7 by 29...♗d8 or ♗f8

30.♘c4 for me is a (??) move, lefting undefended the g4 square allow the subsuquent (easy) combination, but probably there is noting better for W

30...♖xh2+ Game Over

Nov-01-19  drollere: the QR to the d file, attacking the white Q with tempo, was an easy first step. but i did not foresee the pretty mate with R and Q.
Nov-01-19  King.Arthur.Brazil: I'm sleepy today. However, I found 27...♖d8 and lose the way with 28...♖f2?!. After 28...♖d2, I selected the 29...♖xh2+ and saw all the moves to gave the checkmate, although I did it with 35...♕h3# lgs.
Nov-01-19
Premium Chessgames Member
  agb2002: Black has a bishop and a knight for the bishop pair.

White threatens Qxb7.

Several white pieces are defenseless: the queen, the rook on f1, both Bishops and the pawn on g5. The initial idea, 27... Rxf1+ 28.Rxf1 Qe2, is met with Qc4 (29.Rc1 Bxc5 30.Qxb7 Rf8). This suggests 27... Rd8:

A) 28.Qxb7 Rxf1+ 29.Rxf1 Qe2

A.1) 30.Qg2 Rd2 31.Qxe2 (31.Rg1 Rxc2) 31... Rxe2 32.Rc1 Bxg4 wins decisive material.

A.2) 30.Rc1 Rd2 wins decisive material (31.Nf3 Qg2#; 31.Ng4 Qxh4 32.Qxe7 Qg2#).

B) 28.Nd7 Rxf1+ 29.Rxf1 Qe2

B.1) 30.Bd3 Qxb2 31.Rf7 Qd4 seems to win a piece at least.

B.2) 30.Qd3 Qxd3 31.Bxd3 Rxf7 wins a piece.

B.3) 30.Nf6+ Bxf6 looks disastrous for White.

C) 28.Qg2 Rd2 wins decisive material.

D) 28.Rfe1 Qxe1+ 29.Rxe1 Rxd5 wins a rook.

E) 28.Rae1 Rxf1+ 29.Rxf1 Rxd5 wins the queen.

Nov-01-19
Premium Chessgames Member
  agb2002: I missed 30.Qf3 in my line A, when White achieves perpetual after 30... Qxc2 31.Qf7+ Kh8 32.Qe8+ Rxe8 33.Nf7+ Kg8 34. Nh6+, etc.
Nov-01-19
Premium Chessgames Member
  Breunor: Eaglewing, in your line Stockfish gives -2.5 with 29 ...Qxg7ch 30Kxg7 b5 31 Ne3 Rd2 followed with black playing Rh4.
Nov-02-19  eaglewing: Thanks Breunor! And yes, b5 is the devastating followup option.
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