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Sandipan Chanda vs Sharma Himanshu
4th Parsvnath Intl Tmt , (2006), New Delhi, 2006, rd 9, Jan-21
Sicilian Defense: Nezhmetdinov-Rossolimo Attack. Fianchetto Variation (B31)  ·  1-0

ANALYSIS [x]

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sac: 14.Rxe7+ PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
Apr-19-06  Raskolnikov: A beautiful double-rook sacrifice on e7.
Apr-19-06
Premium Chessgames Member
  offramp: You would not guess the ratings of the players from the opening.
Apr-19-06  hitman84: <offramp>What do you mean?
Apr-19-06
Premium Chessgames Member
  offramp: Moves like 5.h3, and black's pretty poor game all round, make the game look like an everyday club game, not a game between players who are both over 2400.
Apr-19-06  hitman84: <offramp>5.h3 was a prophylaxy stopping Ng4 white's idea is to push e5 for Nf6 so h3 stops Ng4.

I was there watching this game and Himanshu had already made his IM norm(final) and was looking rusty..

I agree he totally mishandled the opening.

A brilliant game by chanda!

Apr-19-06
Premium Chessgames Member
  offramp: Yes; a very good game. It reminds me of Spassky vs Weiss, 1966.
Sep-24-09  WhiteRook48: 21...Ke7 22 Qg5+ Kd6 23 Qf6+ Kd5 24 Bb3+ Ke4 25 f3#
Nov-26-17  newzild: <WhiteRook48>

In your line, Black has alternatives such as 22...f6, 22...Ke8, 22...Ke6 and 24...c4.

The line I saw was 21...Ke7 22. Qe4+

a) 22...Kf6 23. g5#
b) 22...Kd6 23. Bf4#
c) 22...Kd8 23. Bg5+ f6 24. Bxf6#
d) 22...Qe4 23. Qxe4+ Kd8 24. Bg5+ f6 25. Bxf6#

Nov-26-17
Premium Chessgames Member
  al wazir: I got the first move, but that's all.

After 15...Kd8, I think 16. Bg5 also wins: 16...Re8 (16...Bxg5 17. Qxg5+ f6 18. Qxf6#; 16...d6 17. Rxe7 Qxe7 18. Qxd6+ Bd7 19. Qxd7#) 17. Qxf7 b5 18. Bxe7+ Rxe7 19. Qxe7#

Nov-26-17
Premium Chessgames Member
  patzer2: Because it was a Sunday puzzle, where exchange sacrifices are common place, I figured the initial moves in our solution were 14. Rxe7! Bxe7 15. Re1 Kd8 16. Rxe7! Kxe7 17. Qe4+ +- with a difficult King hunt.

After 17...Kf6 I went for 18. Qh4+ +-, which is the computer first choice. However, I did not see the only winning follow-up after 18. Qh4+ Ke6 (diagram below).


click for larger view

Here (diagram above) the winning move I missed was 19. Bg7! +- (mate-in-eight, Stockfish 8). Unfortunately for me, other moves either draw or lose.

The game continuation 18. g4! +- (+ 16.74 @ 33 ply, Stockfish 8) with the threat 19. g5# wins a bit more simply. The only way to avoid a quick mate is with 19...Qe5 when 20. Bg7+ Kxg7 21. Qxe5+ Kg8 22. Bb3 +- (+17.74 @ 35 ply, Stockfish 8) wins with ease.

P.S.: Black's game takes a serious turn for the worse with the ugly 11...Bb6? allowing the game continuation 12. Bh6 ± to +- (+1.53 @ 31 ply, Stockfish 8) or the computer suggestion 12. Bg5 0-0 13. Bxe7 ± to +- (+1.81 @ 30 ply, Stockfish 8).

Instead, the computer suggestion 11...f6 = to ⩲ (+0.24 @ 30 ply) keeps Black in the fight with near level chances.

For an earlier improvement in this rare Sicilian opening line, perhaps Black should ditch the non-developing 7...Qc7 allowing 8. Nc3 ⩲ (+0.35 @ 32 ply, Stockfish 8) in favor of simple active development with 7...0-0 = (+0.08 @ 30 ply, Stockfish 8).

Nov-26-17  Walter Glattke: 16.-b5 17.Bg5 d6 18.Rxf7+ Ke8 19.Rxc7 bxa4 20.Qf7#
Nov-26-17  mel gibson: I saw those first few moves but it looked too risky to take them.

The computer says:

14.
Rxe7+ (14. Rxe7+ (♖e1xe7+ ♗d6xe7 ♖a1-e1 b7-b5 ♖e1xe7+ ♔e8xe7 ♕d5-e4+ ♔e7-f6 g2-g4 ♕c7-e5 ♗h6-g7+ ♔f6xg7 ♕e4xe5+ f7-f6 ♕e5xb8 b5xa4 ♕b8-c7 ♖h8-e8 ♔g1-g2 a4-a3 b2xa3 c5-c4 a3-a4 ♖e8-g8 ♔g2-g3 ♖g8-f8 ♕c7xc4 ♗c8-b7 ♕c4-d3 ♗b7-c6 a4-a5) +2.97/21 255)

score for White +2.97 depth 21

Nov-26-17
Premium Chessgames Member
  malt: with the bishop threat ...b5/..c4 went for 14.Bb3 e6 which led no ware then hit on 14.Rad1 which did bear fruit
but did not see the killer punch
Nov-26-17
Premium Chessgames Member
  morfishine: 2 rooks for Bishop + pawn opens up Black's position like an otter cracks open a clam

Of course, 18...Qe5 gets skewered by 19.Bg7+

Very nice combination

*****

Nov-26-17  Pawn Slayer: Well, if black is a grandmaster, I'll eat my hat.

His handling of the opening is clueless, and beautifully exploited by white. As Fischer used to say "the attack almost plays itself". 11 ..Bd6 is horrible - the sort of move a beginner would make.

Nov-26-17  njchess: Nice double rook sack. I got the initial sequence of 14. Rxe7+ Bxe7 15. Re1 ... It then took me a while to find Rxe7! I only found it because it occurred to me that since Black's queen was the only piece that could block the e-file and it was restricted to Black squares, which had no support, White could then play Qe4 with complete impunity.

Black does mishandle the opening as early as 5. ... Nf6, better would have been d6 followed by Nf6. That way the knight has somewhere to retreat. It also gives his bishop some options. Follow Nf6 with 0-0. Instead, he tries to mix it up in the middle without first securing his king. Still, a nice attack by White.

Nov-26-17
Premium Chessgames Member
  patzer2: Corrections: "Black's game takes a serious turn for the worse with the ugly <11...Bd6?">

"The game continuation 18. g4! +- (+ 16.74 @ 33 ply, Stockfish 8) with the threat 19. g5# wins a bit more simply. The only way to avoid a quick mate is with <18...Qe5> when 19. Bg7+! ...wins with ease."

P.S.: Got distracted after the excitement of watching my oldest Grandson's California state high school championship football game on a Facebook video broadcast, and messed up the move numbers and letters. My Grandson's team won their game 42 to 20, and my Grandson scored two touch downs on offense and special teams and had two key interceptions on defense.

For US college football fans it has been an exciting week of upsets with number one Alabama losing to Auburn and number two Miami losing to Pitt. With a lot of help from turnovers and mistakes by Florida, my alma mater Florida State won their game which was a lot closer than the 38-22 score reflected.

Nov-26-17  lost in space: <<patzer2>: Because it was a Sunday puzzle, where exchange sacrifices are common place, I figured the initial moves in our solution were 14. Rxe7! Bxe7 15. Re1 Kd8 16. Rxe7! Kxe7 17. Qe4+ +- with a difficult King hunt.>

Same here

Nov-26-17  Marmot PFL: <For an earlier improvement in this rare Sicilian opening line, perhaps Black should ditch the non-developing 7...Qc7 allowing 8. Nc3 ⩲ (+0.35 @ 32 ply, Stockfish 8) in favor of simple active development with 7...0-0 = (+0.08 @ 30 ply, Stockfish 8).>

Early queen moves in the Rossolime are usually not good.

Larsen vs H Heikkila, 1953

Bronstein vs Geller, 1955

Although here black plays Qb6 and wins a sharp battle.

Bronstein vs A Mirzoev, 1996

Nov-26-17  Patriot: The stars seemed to line up for this sacrifice that I may have actually played this in a game if presented this position as white.
Nov-26-17  Pawn Slayer: @patzer2

"Grandson scored two touch downs on offense"

Just as a matter of interest, why do they call it a "touch down" when they don't actually touch the ball down? In a proper game (rugby) you actually have to get the ball down on the ground to score.

American football is the least exciting and most incomprehensible game I've ever seen.

Nov-26-17  NBZ: <Patriot> Same here. I think though what I'd find difficult in a game is to set up the double-rook sacrifice with the initial pawn sacrifice 8. Nc3!. It takes a keen positional sense and good calculation to realize that the sacrifice is good. In the game line 11. Qd5 Bd6 12. Bh6 there is clearly great compensation for White, but he also must foresee 11. ... Bg7 12. Rxe7+! (without this resource, Black can play e6 and O-O).
Nov-26-17  Patriot: <NBZ> 8.Nc3 is a nice move that helps white develop more pieces after 8...Nxc3 9.dxc3 - 9.bxc3 to capture toward the center is the "general principle" but 9.dxc3 makes more sense here for development. Going after the pawn before castling wasted precious time for black.
Nov-27-17
Premium Chessgames Member
  patzer2: <Pawn Slayer> <Just as a matter of interest, why do they call it a "touch down" when they don't actually touch the ball down?> According to https://en.wikipedia.org/wiki/Touch... the original American Football rules, adopted around 1876, did require the ball to be "touched down" to score. By 1889 the requirement to actually "touch the ball down" (as in Rugby) was eliminated.

However, the term "touchdown" to reflect a scoring play worth six points has remained in effect.

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