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John A Curdo vs Valery Frenklakh
53rd New England Open (1993), Lowell MA, Sep-04
Pirc Defense: Austrian Attack. Unzicker Attack (B09)  ·  1-0
ANALYSIS [x]

FEN COPIED

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find similar games 1 more J A Curdo/V Frenklakh game
sac: 20.Rxf7 PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Jun-08-06  Zplane: I saw Ba3 (to attack the black rook) as the move I would do in a game but figured since it was the puzzle they would go with the rook sac on f7. Problem is I didn't see the combination of the two.

On another point ... In studying the various versions of chess openings I see the different versions listed as C30, C32, etc. Can anyone speak to the significance of the C designation and how these openings obtained these designations?

Jun-08-06  zb2cr: <Zplane>: C30, C32, etc., are ECO designations for opening lines. See "ECO help" on the cg.com home page.

As to the puzzle--I missed it. I saw that 16. Ba3 was a strong move, but to my eyes, much of the play after the move was not forced, so I rejected 16. Ba3 as the solution.

Jun-08-06  RookFile: Curdo has always been very strong at attack, especially against the king.
Jun-08-06  alphee: <TrueBlue:> I tried it first too but it didn't work 16. ♖xf7 ♖xf7 17. ♕xg6 ♔f8 18. ♗g5 ♕c8 (18. ♕xe6 ♕e7 9. ♕xe7+ ♖xe720. ♗g5 ♖f7 21. ♗c4 ♖f5) and I missed ♗a3 too busy trying to exploit the Bishop on d4....
Jun-08-06  Whitehat1963: Well, this certainly didn't go as I expected it to!
Jun-08-06
Premium Chessgames Member
  jahhaj: I had 16.Bh3 but only as what I would play in a real game. After rejecting 16.Rxf7 I'd given up looking for the 'problem solution'.
Jun-08-06  Marcelo Adaes: I dont think 16.Ba3 is a very good play, I think 17....Qc7 is a very bad play.
Jun-08-06
Premium Chessgames Member
  YouRang: Nothing much for me to add. I missed it. I looked for a long time at Rxf7, but couldn't make it fly. So much for my hopes of a perfect week.
Jun-08-06  belka: This might be considered a spoiler. (see Daily Puzzle F.A.Q.). These kinds of puzzles are thrown in to stop you from "solving" each puzzle simply by choosing the most attractive sacrifice.

Rxf7 jumps out at everyone! It needs to be looked at, but there isn't any continuation. Black holds the g7 square, so Bh6 threatens nothing. White's a tempo behind. It cannot work.

Ba3 is a solid move that prepares Rxf7, pinning the c5 pawn. This undeveloped bishop needs attention, and it's more useful on the a3-f8 diagonal because of the weakness of f7.

Jun-08-06  MiCrooks: There are 5 big letters then 100 numbers to classify the openings, with subcategories under them. I am not sure who originated them, but used by ECO (Encycolpedia of Chess Openings) and Informants originally, now pretty much universal.

A = catchall category mainly no e4 or d4 first moves, but you also get some d4 openings without d5 or Nf6 and even some d4 Nf6 variations.

B = odd e4 openings (no e5, e6 or c5) and all e4 c5.

C = e4 with e6 or e5

D = mainstream d4 openings (d5, more Nf6 c4 g6 with d5)

E = rest of d4 Nf6 openings

You're on the internet...easy to look this kind of thing up :)!

As to immediate Rxf7...there really is no risk here, other than not being able to force a win (and I believe a forced win is there). Ba3 is a very pragmatic move, but you would have a long game still to play if Black just leaves his Rook on f8 and doesn't allow the subsequent rook sac. Easily won, but long none-the-less.

Jun-08-06  NOKRO: <TrueBlue: what's wrong with: 16 Rxf7 Rxf7
17 Qxg6 Qh4
18 Bh6 >

This looks promising. I will go for this line of thinking. Black king is open to attack after few more moves.

Jun-08-06  RookFile: But you need more than 'looks promising' before you throw a ROOK out the window...
Jun-08-06  EmperorAtahualpa: Today's puzzle was selected by <chessgames.com>, because there turned out to be a flaw in the puzzle I selected for Thursday.

Nice puzzle this is! I only spotted the first move.

Jun-08-06
Premium Chessgames Member
  kevin86: The key was the sac at f7---but first,the rook needed to be driven away. Thus,the need for white's queenside manoevers.
Jun-08-06  Demostenes: The exachange of queens could have held out longer:
16.Ba3 Qd5
17.Qxd5 exd5
18.Bxc5
where white wins a pawn and seems to have a better position because of the pair of bishops and numerous black weaknesses: isolated d-pawn, poorly placed knight and (probably) queenside pawns. On the other hand white has doubled pawns on the c-line, but generally his perspectives seem to be much more optimistic.

Generally speaking White's first task must be to complete the development in order toactivate the a1-Rook. Here is more 'defeatist' variation (from black's point of view): 16.Ba3 b6
17.dxc5 bxc5
18.Bxc5 Re8
19.Rxf7 Kxf7
20.Qxg6+ Kg8
21.Qh7+ Kf7
22.Rf1 and black looses the queen

Jun-08-06
Premium Chessgames Member
  dzechiel: <HelaNubo> After 16 Ba3 Rc8, it appears that white just plays 17 Bxc5 and black has to give up the exchange on either c5 or f8 (or succumb to the rook sac).
Jun-08-06  RandomVisitor: After 16.Ba3 Rc8 17.Bxc5 Rxc5 18.dxc5 Qc7 Black has some compensation for the exchange. This is why my computer says 17.Rab1 is better for White.
Jun-08-06  Paladin88doug: One thing to consider after the Rxf7 line is that when Black takes back with the rook, Qxg6, if black plays a move like cxd4 (like my computer did) then Ba3 is a possibility against Kf8. This has Qh7 and Qg8 in mind...lots of complications after Rxf7, I think Ba3 was wise. I didn't expect it when so many sacs occur in these puzzles...This must be no-sac wednesday!!!lol
Jun-08-06  Paladin88doug: sorry I meant thursday
Jun-08-06  Demostenes: <Deevke> 16.Bh6? Bxh6 17.Rxf7 Rxf7
18.Qxg6+ Bg7
Jun-08-06  SaltiNeil: John Curdo was Massachusetts champ 15 times! I spoke with him recently and he still plays about 50 tournaments a year.
Jun-08-06  letekro: Curdo is known for the saying: "Two bishops is money in the bank." I'm willing to bet that he was already mentally marking this game in the win column after 10...Bxf3 (if not sooner).
Jun-08-06  belgradegambit: Nice to see a game by a true New England legend.
Jun-08-06  makaveli52: I decided that something could be made of 16.Bh6 Bxh6 17.Rf6, but 17...Qe8 kills it
Jun-21-06
Premium Chessgames Member
  patzer2: The recent daily puzzle solution 16. Ba6! sets a strong positional pin and deflects Black's Rook on f8 to prepare the decisive sacrifice 20. Rxf7 .
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