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Roberto Cifuentes Parada vs Gert Ligterink
Hoogovens-B (1988), Wijk aan Zee NED, rd 11, Jan-21
Torre Attack: Classical Defense (A46)  ·  1-0



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Kibitzer's Corner
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Aug-18-07  King mega: wow...first time i got a 3.5star right!!!
Aug-18-07  TheaN: 6/6!!! WOOHOO!

The only move that got out of the mess was 15.♘f6+!. Although looking very strange it does open up the g-file of Black and the white ♗ diagonal of White.

15....♙xf6 is pretty much forced: only because 15....♔h8 doesn't lead to anything better after 16.♖xf4.

16.♖xf4 is a hard to think through move, however, this is the puzzle's difficulty. Black's maybe most obvious reply is 16....♙xe5. This, as played in the game, leads to the deadly 17.♗f5!, which is the puzzle's key move: Black will not get more than a ♖, a ♗ and a ♙ for his own ♕, still having the open g-line to defend.

Any other move 16 of Black loses on behalf of the open g-file and the weak ♙s. 16....♕d7 (which seems to be the best placement) leads to 17.♕h5 (first I had 17.♖h4? ♔g7 18.♕h5 ♖h8 and Black holds. 17.♖xf6 leads also to 17....♔g7 18.♕h5 ♖h8). After 17....♔g7 the ♖ comes in, but not at h4 but at g4: ♖g4+ and Black falls.

16....♕e6 is met by the easy tempo gain 17.♖xf6 followed by 18.♕h5 which is more forcing than after Black's ♕d7.

Getting the Knight in seems to be a bit harder to wipe up: 16....♘d7. However, this is not the case: 17.♖h4 ends any resistance once and for........... tomorrow >_>.

Aug-18-07  ConstantImprovement: So, the basic motif of the position seems to be the following: Imagine the board without the white knight and the black pawn on f4. Then 15. Bf5 would trap the black queen.

Additional motifs that might play a role:

- A way of the rook via f4 to h4, attacking the king
- A queen move to g4 or h5, potentially
increasing the rook's pressure
- A sacrifice of the knight on f6 to make h6 a target for queen and rook (Thinking in motifs again, imagine the declined sacrifice with the white knight on f6, the black king on h8, the black queen driven away and the white queen and rook on h5 and h4: Which famous mate could follow? Right, Qh6:+ h6: Rh6:+ Kg7 Rh7++ the bishop has g6.). - The strong bishop that might be essential for a mate on h7 or, after Bh7+ Kh8 Bg6+ Kg8 Qh7 Kf8 Qf7:++, on f7

The whole trapping or attack must not take to long, because black will need only three typical moves to create counter pressure: c5, Nc6, d4:, targetting the d4-pawn. This must either not be allowed to happen or the attack has to be so strong that Nd4: does not matter anymore.

Then, let us try some of those:

I. 15. Rf4: is not enough, because of 15.
... e4:

1. 16. Bf1 and after Qd7 the white attack will not come fast enough for the black counterplay.

2. 16. Rh4 Qh4: 17. h4: d3:, and Black should not be worse having given queen and pawn for rook, bishop and knight.

II. 15. Nf2 is basically a great move, driving the queen away from the h-file, keeping the a8-h1-diagonal closed and allowing f4: with a further f5. After Qd7 16. f4: white has attacking ideas with f5 (f6), Qh5 in combination with the bishop, and he can play Kh1 and Rg1, getting a very strong attack. Black could bring in his three counter play moves and it would be a typical race, not forcing enough for a puzzle.

III. 15. Nf6+ This achieves many things: It allows a queen trap after Rf4: and Bf5 without giving black time for counter pressure, opens up the black pawn shelter for queen, rook and bishop when accepted, and it can basically not be declined.

1. 15. ... Kh8 16. Rf4:

a. 16. ... f6: 17. Bf5 e5: 18. Bh3: f4:
19. f4: having the queen for rook and bishop with a winning attack.

b. 16. ... Qd7 17. Qh5 with a winning attack:

c. 16. ... Qe6 17. Rf6: Qd7 18. Qh5 with a winning attack (17. ... Qh3 18. Bf5 trapping the queen)

b1. 17. ... f6: 18. Qh6: Kg8 19. f6: with mate at the next move

b2. 17. ... c5 (trying to counter pressure, but too late) 18. Rh4: (Do you recognize the motif mentioned above?) 18. ... Nc6 19. Qh6:+ h6: 20. Rh6:+ Kg7 21. Rh7++

So declination leads to a winning attack.

2. 15. ... f6: 16. Rf4: This threatens Bf5 again, so the queen must move.

a. 16. ... Bc8 does not help: 17. Rh4

a1. 17. ... Qd7 18. Qh5 f5 19. Qh6: winning

a2. 17. ... Qe6 18. Rh6: winning, because the f6-pawn can not move to block the bishop-diagonal, and Qh5 follows with mate.

b. 16. ... Qd7 (16. ... Qc8 to allow Nd7 does not change anything, because this knight taking a piece at f6 will only result in f6: by white with a queen mate at g7.) 17. Qh5 winning, because of the mate threats at h7 and, after Rh4, h8.

c. 16. ... Qe6 17. Rf6: Qd7 (17. ... Qh3 Bf5 trapping the queen; 17. ... Qf6: 18. f6: is not sufficient after 19. Qh5) 18. Qh5 with mate after Qh6:. 18. ... Rc8,d8 19. Qh6: c5 20. Bh7+ Kh8 21. Bg6+ Kg8
22. Qh7+ Kf8 23. Rf7:+ (Our last motif, here with the aid of the rook) Qf7: (23. ... Ke8 24. Qh8,g8++) 24. Qf7:++

d. 16. ... e5: 17. Bf5 f4: 18. Bh3: winning

So we saw all of the motifs that we thought of at the beginning coming to life in our variations.

We came to the line:

15. Nf6+ f6: 16. Rf4: Qe6 17. Rf6: Qd7 18. Qh5 Rd8 19. Qh6: with mate in the next moves.

Aug-18-07  Skylark: I'd love to know exactly how many people who type 'I got it' actually got it.

I missed the Bf5 idea and couldn't make Nf6+ come to fruition. Eh, maybe I'll have better luck tomorrow. This puzzle seemed really abstract and was hard to calculate; much more so as I do these puzzles in my head rather than playing out my thoughts on a board. Damnit, I've been having a pretty good run of saturdays too.

Aug-18-07  Marmot PFL: Not that difficult because of several factors - undeveloped black pieces, queen with only one escape route, and white amost forced to move the knight anyway from the starting point (unless exd6 is legal, but it would not be good in any case to activate black's bishop).
Aug-18-07  elhares: its not hard to see Nf6 cause any retreat would give black good chance and also Nf6 break the king pawns of the black and let him exposed to the good developed peices of white so after 15...g take f6 16.r take f5 makes it over for black and if he try to save his queen by 16...Qe6 (e) take f6 will make it over!
Aug-18-07  KOCMOHAYT: yes that's a nice game, too said he gave up chess
Aug-18-07  psmith: I got most of it -- but I didn't look at the Bc8 defense.

However, in the line as played I went for 17. Rg4+ Kh8 18. Bf1, which also wins.

Aug-18-07  KOCMOHAYT: i mean josh waitzkin. escuse moi
Aug-18-07  psmith: <MostlyAverageJoe>
"After 16...Bc8 why hurry with Rh4... Try 17.exf6 first, and the black is in deep trouble..."

Absolutely right and a great suggestion!

Aug-18-07  kevin86: Usually in these puzzles the target is a queen trap or mating attack-here we have both. First,the queen is rounded up and then the weakened king is doomed to fall.
Premium Chessgames Member
  Breunor: For me, this was one of these 'this is a puzzle, there is an answer, so find it' issues. I found the solution here, although I'm pretty sure I wouldn't have found it in a real game where I wasn't endowed with the foreknowledge that a winning move is present. And I didn't see all of the lines; fortunately, Nf6 is kind of obvious once you know there is a winning move!
Aug-18-07  sfm: A real shocker! The black position looks OK, with no real weaknesses to point at. Only his Q-side is a little behind, but that can be fixed in a couple of moves... But black never gets the time! They didn't look too dangerous, the Q+B+R+N - but suddenly they threw their mask!
Aug-18-07  Fezzik: <MAJ>

17.Rh4 was my idea, and Black seemed to be falling apart anyway. The queen sac still doesn't address the terrible lack of coordination of Black's pieces.

You're probably right though, 17.ef6 does seem even better.

Aug-18-07  newton296: I guess I don't get full credit cause i was too lazy to look at all the possible lines.

I figured nf6+ and assumed black takes the knight ( it is a puzzle after all ) and so I found the the main line . your gotta think white is winning after white's Rxf4 ! and all of sudden white has alot of heavy artillary around black's king and blacks Q is trapped! didn't look at f5 instead of the lame fxg3 line either.

Aug-18-07  patzer2: White solves today's difficult puzzle with the demolition of pawn structure combination 15. Nf6+!! Black chooses to surrender his Queen rather than face a quick mate, but resigns in the face of decisive loss of material.
Aug-18-07  willyfly: White is down a ♙ and the e4♘ and g3♙ are being attacked - Black's b8♘ is undeveloped and blocks the a8♖ from entering the game - the b7♗ is rendered ineffective on the long diagonal by his own ♙ at d5 however the capture of the White ♘ would open the diagonal - White must act quickly or risk losing material - this calls for drastic action - the most obvious forcing move is 15 ♘f6+

then I'm thinking along the lines of

15...gxf6 16. ♖xf4 fxe5 17 ♗f5
and now it looks like Black's ♕ has nowhere to go - this is all I have time for so I'm just going to look

and the rest, my dear Watson, is elementary

Aug-18-07  willyfly: even to a patzer like me the whole idea of 12...♕h4 is something I would not have tried because there isn't enough support for it due to Black's lag in developement - and then 13 d5 just makes matters worse - too speculative - too easy for a Saturday - but still fun
Premium Chessgames Member
  fm avari viraf: I saw two candidate moves 15.Nf6+ & 15.Nf2 but the latter looks passive & the former looks aggressive as it fractures the pawn structure & threatens to trap the loitering Queen. After 15.Nf6+ gxf6 16.Rxf4 fxe5 17.Bf5 trapping the Queen & the rest seems to go with precise plan & tactics.
Aug-18-07  wouldpusher: 16. ... ♗c8 17. exf6 ♖d8 18. ♕f3 ♘d7 19. ♖g4+ ♔f8 20. ♖h4 ♕e6 21. ♖xh6 ♔e8 22. ♗f5 and wins, e.g. 22. ... ♕d6 23. ♕e3+ ♘e5 (on 23. ... ♕e6, 24. ♕xe6+ fxe6 25. ♗g6+ ♔f8 26. ♖h8#) 24. ♖h8+ ♕f8 25. ♖xf8+ ♔xf8 26. ♕h6+ ♔e8 27. ♕h8#. Black can play 22. ... ♘f8 23. ♗xe6 ♗xe6 to live longer, but this leaves him hopelessly behind in material.

I think this whole 16. ... ♗c8 business is what makes this puzzle a 3.5 star.

Aug-18-07  flightsquare: I guess it was too easy for saturday because I got it!
Premium Chessgames Member
  Sneaky: So what's the consensus--you had to see 17.Bf5 to solve it? Or only 16.Rxf4? Both moves are forced, right? I saw Rxf4 but overlooked Bf5. In retrospect, that's not a hard move to see, but I just wasn't thinking "trap the queen!" at all.
Aug-19-07  MostlyAverageJoe: <Sneaky: So what's the consensus--you had to see 17.Bf5 to solve it? >

I am far from suggesting a consensus one way or the other, but can provide an additional data point: Hiarcs 11.2MP analysis (18-ply) after <15. Nf6+ gxf6 16. Rxf4 fxe5> indicates that 17.Bf5 is much better (+3.84) than the second best move, 17.Rg4 (+2.32). But both should win.

Incidentally, this puzzle is one of more difficult ones for software to evaluate properly. For example, after 16. Rxf4, the initial analysis seems to indicate that 16...Bc8 is better (+2.56) than 16...fxe5 (+3.84).

Only human-assisted evaluation (with some sliding forward/back analysis) shows that 16...fxe5 is superior, as Bc8 ends up evaluating at (+5.84) very soon soon after 17.exf6 is entered for analysis.

At the initial position, the software initially prefers Nf2 instead of Nf6, and only after about 2 CPU minutes picks the latter.

It is possible that the above behavior is peculiar to Hiarcs. I'll have to check with Fritz.

Aug-19-07  Dilbertarian: I was under the impression that Black could save himself with 16. ... Bc8, but according to Crafty : 17. Rh4 Qe6 18. Rxh6 Qg4 (otherwise White plays 19. Qh5) 19. Qxg4+ Bxg4 20. exf6 Bd7 21. Rf1 Re8 22. Rf4 Re1+ 23. Kf2 wins (there is no defense against Tf4-h4).
Aug-19-07  MostlyAverageJoe: Followup to my earlier note: Fritz 10 has the same kind of trouble as Hiarcs in finding the best lines in this game ...
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