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Vassily Ivanchuk vs Aleksey Dreev
URS Army-chT (1987), Sverdlovsk URS
French Defense: Tarrasch. Closed Variation (C05)  ·  1-0

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
Nov-26-12  nansen: Beautiful tactics (as usual!) by Chucky.
Jan-05-18  plumbst: I chose the boring 27.Rce1 to win but 27.Qg5! is prettier. If Black accepts the sacrifice then after 27...Kxe6 28.Re1+ Ne5 29.Rxe5+ Kd7 30.Qxg7 or 29...Kd6 30.Rxd5+ Ke6 31.Qe3+ Kf7 32.Rf5+ Ke8 33.Nxc8+ he loses massive material.
Jan-05-18  wtpy: Plumbst, I chose the exact same line with Rce1 and Olga likes it better giving an 8.97 advantage. Black's king is scuppered.
Jan-05-18  lost in space: Same here, 27. Rce1
Jan-05-18
Premium Chessgames Member
  patzer2: For today's Friday (23. ?) puzzle, I played guess-the-move and followed the game line as far as 23. Neg6+! hxg6 24. Rxe6! Qc7 25. Nxg6+ Kg8 26. Ne7+ Kf7 (diagram below):


click for larger view

Here (diagram above) I wished I had seen White's brilliant 27. Qg5! +- (+8.40 @ 29 ply, Stockfish 8) threatening 27...Kxe6 28. Re1+ Kd6 (28...Kf7 29. Qg6#) 29. Qxd5#.

Instead, the best I could find was the simple 27. Rce1 +- (+14.62 @ 31 ply, Stockfish 8) which also leaves Black with a clearly lost position.

P.S.: Black's decisive mistake appears to be 21...Bb5? allowing 22. Nf4 +- (+1.89 @ 29 ply, Stockfish 8). Instead, 21...cxd4 22. Nf4 d3 ± (+0.73 @ 33 ply, Stockfish 8) gives the second player drawing chances.

For a Black improvement in this heavily analyzed Tarrasch variation of the French Defense, I prefer the computer choice 13...Ng4 ⩲ to = (+0.33 @ 31 ply, Stockfish 8) as in the drawn in G Meier vs Navara, 2009.

Jan-05-18  mel gibson: I knew it was one of the Knights that would make a check. The computer - Stockfish 8 says:

23. Neg6+ (23. Neg6+ (♘e5-g6+ h7xg6 ♖e1xe6
♕d6xe6 ♘f4xe6 ♖f8xf3 ♘e6-f4 ♔h8-h7 ♔g1-g2 ♖f3xf4 ♕d2xf4 ♖c8-e8 ♕f4-h4+ ♔h7-g8 d4xc5 ♗b5-c6 ♔g2-g1 ♘d7-e5 ♖c1-f1 ♗c6-b5 ♕h4-d4 ♗b5-c4 ♖f1-f2 ♘e5-d3 ♖f2-d2 ♖e8-e1+ ♔g1-g2 ♖e1-e4 ♖d2xd3 ♖e4xd4 ♖d3xd4 ♗c4-b5 ♔g2-h3 ♗b5-c6 ♔h3-h4 ♔g8-f7 ♔h4-g5 a6-a5 ♖d4-f4+ ♔f7-e6 ♔g5xg6 ♔e6-e5 ♔g6xg7) +5.19/34 166)

score for white +5.19 depth 34

Jan-05-18  Cheapo by the Dozen: The Ng6 idea was very easy to see.

The Rxe6 fillip wasn't that hard either.

I actually stopped there. I didn't see ahead to Qg5, and hence also didn't see why Ne7+ was better than Nxf8.

Jan-05-18  AlicesKnight: Got the first 3-4 white moves (in the right order for once!)- was unsure of the best line after this. Every piece plays an important role.
Jan-05-18
Premium Chessgames Member
  malt: Got 23.Neg6+ hg6
(23...Kg8 24.N:d7 B:d7 25.R:c5 R:c5 26.dc5 )
24.R:e6 Qc7 25.N:g6+ Kh7
(25...Kg8 26.Ne7+ )
26.Qg5 Nf6 27.N:f8 R:f8 29.dc5
Jan-05-18  7he5haman: How does White respond after 20...Ne4?
Jan-05-18
Premium Chessgames Member
  WorstPlayerEver: <7he5haman>

I guess you mean what happens if Black hits on f2? SF:

20... Ne4 21. Qa5 Rxf2 (Nxf2 22. Qc5) 22. Nf4

Jan-05-18
Premium Chessgames Member
  malt: In the Line
25.N:g6+ Kg8 26.Ne7+ Kf7 27.Qg5 K:e6
28.Re1+ Black could play 28...Ne5
29.R:e5+ Kd7 30.R:d5+ Ke8
Jan-05-18
Premium Chessgames Member
  morfishine: I thought Black could survive after 27.Qg5 <27...Kxe6> 28.Re1+ and now running <28...Kf7>

I guess not

*****

Jan-05-18  Mayankk: First three moves are easy to see. After that although it gets murky, it is easy to see that White has a dominant position with Black king running for cover.

Another of those positions where you donít need brute force calculation to play the first few moves. And then you let the game play itself knowing you are definitely superior.

Jan-05-18
Premium Chessgames Member
  agb2002: White has a knight for a bishop.

The position of the white knighs suggests 23.Neg6+ hxg6 24.Rxe6 Qc7(b8) 25.Nxg6+ Kg8(h7) 26.Nxf8 Rxf8 27.dxc5 with a rook and three pawns for two pieces (27... Rxf3 28.Qxd5 Rxg3+ 29.hxg3 Qxg3+ 30.Qg2).

That's all I can do today.

Jan-05-18
Premium Chessgames Member
  Jimfromprovidence: If black tries 25...Kh7, white wins with a real nice move, 26 Qg5. (26 Rce1 also works).


click for larger view

The threat is 27 Qh5+ Kg8 28 Ne7#. And defensively, 26 Qg5 prevents 26...Rf6.

Jan-05-18  newzild: <<jimfromprovidence> And defensively, 26 Qg5 prevents 26...Rf6.>

White has a cute mate here:

25...Kh7
26. Qg5 Rf6
27. Qh5+ Kg8
28. Qh8+ Kf7
29. Re7+ Kxg6
30. Rg7+ Kf5
31. Qh3#

Jan-05-18  Marmot PFL: First three moves seemed easy, missed Qg5 however it seems white has several roads tyo choose from.
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