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Vassily Ivanchuk vs Samuel Shankland
Capablanca Memorial (Elite) (2017), Varadero CUB, rd 5, May-31
Queen's Indian Defense: Fianchetto Variation. General (E15)  ·  1-0



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Kibitzer's Corner
Premium Chessgames Member
  patzer2: White's strong positional exchange sacrifice 18. Rxc5!? puts Black through a torture chamber of complications trying to maintain equality.

Black does well for quite a few moves, but then slips up with 32...Rb8? allowing 33. Nce5! to (+1.66 @ 28 depth, Stockfish 8) with a near decisive White advantage.

Instead, 31...Rb7 32. Ba5 to (+0.67 @ 25 depth, Stockfish 8) gives Black survival chances.

May-31-17  bubuli55: Chucky! Chucky!
Premium Chessgames Member
  patzer2: With the benefit of hindsight, instead of 16...Rc8 allowing 17. Nb5 (+0.30 @ 30 depth, Stockfish 8), Black might have been better off with 16...Bd4 = (0.00 @ 30 depth, Stockfish 8).

I think 16...Bd4 = would at least have avoided the mind bending complications that followed from the exchange sacrifice 18...Rxc5!?

Premium Chessgames Member
  An Englishman: Good Evening: <patzer2>, please clarify your first post. Did you mean 32...Rd8 and 32...Rb7 instead of 32...Rb8 and 31...Rb7? You are correct that this represents quite remarkable play by Ivanchuk.
Premium Chessgames Member
  patzer2: <An Englishman> Yes, I did get the wrong move number on the improvement for 32...Rb8? 33. Nce5! to (+1.66 @ 28 depth, Stockfish 8).

Instead of 32...Rb8?, Black should play 32...Rb7 33. Be2 h6 (+0.66 @ 32 depth, Stockfish 8.)

P.S.: Thanks for the observation and the assistance with the correction.

Jun-01-17  PeterWellington: Wow, tactics just keep coming. Everything seems to be hanging by a thread but Ivanchuk is just in time to have everything covered
Jun-01-17  bubuli55: Chucky knows who to beat to win this tournament.
Jun-01-17  groog: Ivanchuk dished out some punishment here. The dark squared bishop was needed for black.
Jun-01-17  JPi: It's a little gem. The kind of game we love from Ivanchuck. <Patzer2> thanks for your notes. What says Skochfish about 15.Nb5. Somehow I feel White has an edge from the opening. Maybe not enough yet.
Jun-01-17  JPi: The idea of 15.Nb5 is to get control of c6 square. Of course Nc7 is an immediate threat but also dxc5 Bxc5 b4 then after B retreats (e7 or f8) Nd4 If now Rec8 then b5 and after Nc6 (Ra1 still there) a4-a5. Just an idea.
Jun-01-17  nelson02: Coments in spanish?
Jun-02-17  madlydeeply: the safest exchange sac is Rook for bishop and pawn... the bishop can glue itself to the extra pawn forcing an exchange giveback to stop the passed pawn in the ending.... B+passed pawn, attached = Rook in ending. Plus all the diagonals now belong to the surviving bishop. I remember Topalov doing this over and over in his glory years
Jun-02-17  madlydeeply: notice chuky retains the DSB...
Jun-02-17  madlydeeply: Also the B can glue itself back into the pawn chain closing files shutting out rook
Jun-02-17  madlydeeply: in final position 3 white minors and king are on dark squares: thats how a fella consolidates the exchange bishop sac advantage
Premium Chessgames Member
  morfishine: The Game of the Century!

Just an exquisite, incredible game


Mar-01-18  Rafaelvleite: this is a symphony!!!!!! how wonderful is that!!!! god!!!!!!!!!!
Mar-01-18  crwynn: Ivanchuk is like a spelunker. He finds these ideas that are deeply buried in a cramped, hard-to-reach place that seems dimly-lit and very dangerous, but somehow he finds a way out. The position after 20.Nexf7 looks very precarious for White and i think most grandmasters would hesitate to go for this. For instance the whole combination seems to fail if 23.Be3 does not work, and this is not an obvious move.
Premium Chessgames Member
  ChessHigherCat: I guess if 50. Rc1 Kb2, black can't stop Nxd6 and black's position will crumble.
Oct-07-19  Nezhmetdinov: Love crwynn's isea of Ivanchuk diving to unlikely depths to find his ideas and blind his opponents. The queenless twists remind me of the famous game Reti-Alekhine.
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