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Julio Becerra Rivero vs Justin Sarkar
US Championship (2007), Stillwater USA, rd 3, May-17
Scandinavian Defense: General (B01)  ·  1-0

ANALYSIS [x]

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sac: 16.Rfc1 PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
May-19-07
Premium Chessgames Member
  An Englishman: Good Evening: Don't let this one slip past with looking at it, because this is an excellent example of a Queen side attack with many interesting moments.

The first is the gambit 9.0-0, which Black should have declined with 9...Nxf3+; 10.Qxf3,e5. Taking the c-pawn gives White the two Bishops and an open c-file...

...which he exploits with a second passive sacrifice (i.e., non-forcing) 16.Rfc1. Again, Black should have declined, accepting a cramped position with 16...Nfe8, but it shows how the open file is worth more than a pawn.

I doubt that Becerra-Rivero saw the entire attack, but he keeps finding moves to keep up the pressure (who knows? They might not be best) and finishes with a flourish: 30.Bxe4,Rxc8??; 31.Bxc6+,Kxc6; 32.Rxd6+!,Kxd6; 33.Bf4+ wins a piece. Black's last move must have been a time pressure error. missing the discovered check after ...Kxd6; Bxf4+.

Jan-14-15  Mating Net: A fine example of a non stop attacking game and the value of the initiative. The Magician from Riga would have endorsed White's aggressive play. As <An Englishman> says, <Don't let this one slip past>
Aug-04-21  Whitehat1963: Monday or Tuesday puzzle after 36?f4.
Oct-08-21
Premium Chessgames Member
  WTHarvey: White wins (decoy):


click for larger view

37. ?

if 37...♔xd6 38.♗xf4+

Jan-02-22  Brenin: I didn't get this one. I was too fixated by the POTD situation, looking (unsuccessfully) for a clever forcing move, to consider a quieter pressurising move such as 16 Rfc1. That is the move I would probably play OTB, as clearly White can afford to lose the N on b5 to axb5 axb5, opening up the a-file for attack. As others have written, the rest of the game is welll worth a close look.
Jan-02-22
Premium Chessgames Member
  al wazir: I thought the idea was something like 16. Ba7+ (giving black an opportunity to play 16...Ka8 17. Nxc7+) Kc8 17. Nxc7 Kxc7 18. Rac1+ Kd7 19. Qd2. But that doesn't go anywhere.
Jan-02-22  mel gibson: I wasn't sure if building up the attack on c7
was good or a more fancy move like
16. Nxc7 was better.

Stockfish 14.1 agrees with the first ply and says:

(16. Rfc1 (♖f1-c1 ♘d6-e8 ♕e2-c2 c7-c6
♕c2-c3 ♘f6-d5 ♕c3-a5 ♕e6-f6 ♖c1xc6 ♗f8-b4 ♖a1-c1 ♘e8-c7 ♕a5xc7+ ♘d5xc7 ♖c6xf6 g7xf6 ♖c1xc7 a6xb5 ♖c7xb7+ ♔b8-c8 ♖b7xb5 ♗b4-d2 ♗f3-b7+ ♔c8-c7 ♗e3-b6+ ♔c7-d7 a4-a5 ♖d8-b8 a5-a6 ♖b8xb7 a6xb7 ♔d7-c6 ♗b6-d8 ♗d2-f4 b7-b8♖ ♗f4xb8 ♖b5xb8 ♔c6-d7 ♔g1-f1 ♖h8-e8 ♖b8-b7+ ♔d7xd8 ♖b7-b8+ ♔d8-e7 ♖b8xe8+ ♔e7xe8 ♔f1-e2 h7-h5 h2-h4 ♔e8-d7 ♔e2-f3 ♔d7-e6 ♔f3-e4 f6-f5+ ♔e4-f4 ♔e6-f6 b2-b3 ♔f6-e6 b3-b4 ♔e6-d5 ♔f4xf5 ♔d5-c4) +7.75/34 48)

score for White +7.75 depth 34

Jan-02-22  mel gibson: Here's a longer analysis with Stockfish 14.

(instead of Stockfish 14.1)

16. Rfc1

(16. Rfc1 (♖f1-c1 ♘d6-e8 ♕e2-c2 ♘f6-d5
♗f3xd5 ♕e6xd5 ♖c1-d1 ♕d5xd1+ ♖a1xd1 ♖d8xd1+ ♕c2xd1 ♗f8-d6 ♘b5-c3 ♘e8-f6 ♕d1-d4 ♔b8-c8 ♕d4-a7 ♘f6-d7 ♕a7-a8+ ♘d7-b8 ♗e3-a7 ♖h8-e8 f2-f4 c7-c6 a4-a5 ♗d6xf4 ♘c3-a4 ♗f4-e3+ ♔g1-f1 ♗e3xa7 ♕a8xa7 ♘b8-d7 ♕a7-a8+ ♘d7-b8 ♘a4-c5 ♖e8-e7 ♕a8-a7 ♖e7-d7 ♕a7-b6 ♖d7-e7 ♕b6-b3 ♖e7-c7 ♕b3-e3 ♖c7-d7 ♘c5-a4 ♔c8-d8 ♕e3-g3 h7-h5 ♕g3xb8+ ♔d8-e7) +6.61/41 633)

score for White +6.61 depth 41.

Jan-02-22
Premium Chessgames Member
  An Englishman: Good Evening: Already knew this one, but still fun to study. 5/6 with one already known. Not a bad start to the year.
Jan-02-22
Premium Chessgames Member
  scormus: <worth a close look> yes! I fancied 16 Nxc7, but at least I got 17 axb5.
If I can't get the first move I never really find the way back Will look closer using SF
Jan-02-22  TheaN: Meh. After about five minutes I threw the towel settling on the unsatisfying 16.Nxc7?! Kxc7, and I wanted to continue with 17.Rac1+? which is a definite mistake. Interestingly, White's better after 17.Qd2!

Also considered 16.Ba7+ Kc8 and now 17.Nxc7, but the issue with this play is that Black can trade queens and defuse the attack before it starts, 17....Qxe2 ∓ at least.

It's both way worse than <16.Rfc1!> which 'simply' prepares for the opening of the a-file. It's already visible on first glance that Black's not fine after <16....axb5 17.axb5>:


click for larger view

White's a piece down. But what is Rh8 doing? Given Black has no time for Be7 (17....Be7? 18.b6! cxb6 19.Bxb7! +-), it will remains as is for a while.

This is one of those typical positions where a piece sacrifice may well be played out of principle than pure calculation, because White has way too much firepower aimed at the Black queen side at defenders are lacking. Alas, the New Year passing left me with 6/7; not bad, this went over my head.

Jan-02-22
Premium Chessgames Member
  agb2002: White has the bishop pair for a bishop, a knight and a pawn.

Black threatens axb5.

I've considered 16.Ba7+ Kc8 (16... Ka8 17.Nxc7+), the knight maneuver aiming at c6 16.Nd4 Qc4, the knight sacrifice 16.Nxc7 Kxc7 17.Rac1+ Kb8 18.Qc2 Rc8 and the knight offer 16.Rfc1 axb5 (due to 17.Nd4 and 18.Nc6+) 17.axb5 Nde4 (allows Bd6 and the flight route Kc8-d7), and I haven't found a relatively clear path of action.

I'd probably play 16.Nd4. For example, 16... Qc4 17.Qd2 Nfe4 18.Bxe4 Nxe4 19.Nc6+ and 20.Qxd8. Or 17... c5 18.Qa5 Rd7 19.Rac1 Qb4 20.Qxc5 Qxc5 21.Rxc5 recovering the pawn with the better position and better endgame expectations.

Jan-02-22
Premium Chessgames Member
  agb2002: After a few minutes DroidFish (Stockfish 280920) evaluates 16.Nd4 at about +2.

Not too bad, but well below 16.Rfc1.

Jan-02-22  mel gibson: <
Jan-02-22
Premium Chessgames Member agb2002: After a few minutes DroidFish (Stockfish 280920) evaluates 16.Nd4 at about +2.>

What a good move.
I put that into Stockfish 14 for a similar time to the solution above and it gives a respectable score of -4.92 but in White's favor. So there are 2 good solutions so far.

16. Nd4

(16. Nd4 Qc4 (♕e6-c4 ♕e2-d1 c7-c5 ♖a1-c1
♕c4-b4 ♘d4-c6+ b7xc6 ♗e3xc5 ♘d6-b7 ♗c5xb4 ♖d8xd1 ♖f1xd1 ♗f8xb4 ♖c1xc6 ♗b4-a5 b2-b4 ♗a5-c7 ♖c6xa6 ♖h8-d8 ♖d1xd8+ ♗c7xd8 a4-a5 ♘f6-d7 ♗f3-c6 ♗d8-e7 ♗c6xd7 ♗e7xb4 ♗d7-f5 ♗b4xa5 ♗f5xh7 ♗a5-c7 ♗h7-e4 ♔b8-c8 ♗e4xb7+ ♔c8-d7 ♗b7-c8+ ♔d7-e7 ♗c8-f5 ♗c7-e5 ♖a6-a5 ♔e7-f6 ♗f5-g6 ♗e5-d4 ♖a5-b5 ♗d4xf2+ ♔g1xf2 f7xg6 ♔f2-f3 g6-g5) -4.92/41 720)

score for Black -4.92 depth 41.

Jan-02-22  saturn2: I considered also the more Karpovian 16. Nd4
Jan-02-22  saturn2: 16.Nd4 ready for a later jump Nc6 +
Jan-02-22  Tiggler: I found a lasting white advantage after 16. Ba7+ Kc8 (Ka8? 17. Nxc7+ Kxa7 18. Nxe6) 17. Nxc7 Kxc7 18. Qc2+ Kd7 . Eventually black has to give the exchange and 2p for the sacrificed N. Not enough, obviously, compared to the text.
Jan-02-22
Premium Chessgames Member
  chrisowen: Etc v its auld o Rfc1 flick finish abridge axled its etc v its auld o riz its in cod v vis negligent vant quagmire quiet o v its warble mack its jump huffy v vis flushy yep its i ra z v its he dope its buts v its clown its wig mucky ja ja briggs v its find vin co car v i flip face its fog vis ebullient v hog hi v vis icicle vis flush aorta its good jog v its fob c fagged its vital in chihuaha vim da jink vin sh mull blips it sleuth bath its vapours v its car flick res it v i gag fab bail its i able v its ill roe its choosed c vin if bad excalibur fog vin code its corked its fase its tan c v vis castigated its cat joffy vis u voda fire dr vociferous v i cred its brag v it ace it beg fee it v visa bag cola jude its ja luck chloe its c it edict vet deer its frag its var c rab i re fo ja vin dint jacks its fine its crocked it sad kid fare its daffy car pot boil cue jar re road no beer car its aero river be rc1 cob julie its arrives no i rover vin digest its jakarta vis tin no a stick ship key as c jag nod one it a quilt oil u van bandjob er care its bin i fig i joe its Rfc1 bah!
Jan-02-22
Premium Chessgames Member
  takchess: 29 points to the King once the rook joins the attack . Something is going to happen. Aagard takes 2 pages to describe from this point. The Attacking manuals have years and years of these sort of things for me to study.
Jan-02-22  FM David H. Levin: I am reminded of the following game where White developed a rook while a minor piece was hanging. In O Castro vs Geller, 1976 (Biel Interzonal, 1976), the following position was reached after 20...b7-b5:


click for larger view

The game continued 21. Rd1! bxc4 22. Bxc4 Na5 23. Qb6!! The annotator in Chess Life magazine thought Black should have played 23...Nc6 and that the game would then end in a draw by repetition after 24. Qb3 Na5. The game ended with 23...Qxb6 24. Bxb6 Nxc4 25. Bxd8 Nf4 26. b3 Ne5 27. Rd6 Ne6 28. Ba5 Nc5 29. b4 Ne4 30. Rxa6 Nd3 31. Kf1 Bd4 32. Ra8+ Kg7 33. Rd8 1-0

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