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Jakob Aabling-Thomsen vs Jeroen van der Meer
Politiken Cup 27th (2005), Copenhagen, rd 1, Jul-16
Scandinavian Defense: Modern Variation (B01)  ·  1-0



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Jun-16-15  Checker2: Robespierre, I had a very similar confidence in the solution without much calculation. It seemed self evident with the power of the open diagonals around the black king.
Jun-16-15  jith1207: Robespierre, I think this kind of moves always come up naturally to chess players' thought process but then the analysis starts if there's really am advantage or if that's a trap. Only when we ensure the moves really bring an advantage, we move forward. I believe this is one of the moves, that appears OTB standing out screaming to be played.
Premium Chessgames Member
  Once: There is an interesting position one move before the puzzle. Here is the position after 19. c4

click for larger view

Black is in trouble. His knight is attacked and if it moves his Bd7 comes under fire. 19...Nf6 doesn't work because of 20. Bf4 Qc8 21. Be5 when both the Nf6 and Bd7 are vulnerable.

So Black tries for a counter-attack. With 19...e5 he assumes that the White queen will have to move, giving him time for Nf6 and Rd8.

We now know that 19...e5 doesn't work because of 20. cxd5 and 21. d6+. But at the time that Black played it, the diagonal from the White bishop on b3 to the Black king on f7 seemed to be blocked with three pieces in the way.

Black probably switched off his sense of danger along this diagonal. He assumed that the white queen had to move.

Of course when we see it as a puzzle which tells us that there is a tactic to be found. And that puts us in the right frame of mind to ignore the attack to our queen. But neither Black or White would get clues like this.

Astonishing how quickly that b3-f7 diagonal can open up.

Jun-16-15  stacase: I look at the position to see who's under attack, can I say check and start considering various moves. 20. cd5 was probably my 2nd look-see and "Oh yeah! That's it." I love to say discovered check (-:
Jun-16-15  Nick46: <Robespierre: Like many other commenters I saw White's first 2 moves nearly immediately. What's so strange to me is that it seemed like the answer came to me without conscious cognition -- the answer simply appeared without strenuous thoughts or ponderings! Do other participants have similar observations?> Oui.
Jun-16-15  sfm: <Robespierre: Like many other commenters I saw White's first 2 moves nearly immediately. What's so strange to me is that it seemed like the answer came to me without conscious cognition -- the answer simply appeared without strenuous thoughts or ponderings! Do other participants have similar observations?>

Actually, the need to do calculations is evidence of our limited chess ability. The strongest move should just pop up in our mind.

At time it does. Congratulations, may it happen ever more often to you.

"What others could not see in a month's study, he saw at a glance." – Reuben Fine (on Capablanca)

Premium Chessgames Member
  offramp: <Robespierre: ...without strenuous thoughts or ponderings!>

Are you pondering what I'm pondering?

Premium Chessgames Member
  whiteshark: <20.cxd5 exd4 21.d6+> wins a piece, at least, and that's it.
Jun-16-15  zb2cr: 20. cxd5, exd4; 21. d6+, Be6; 22. Bxe6, Kxe6; 23. dxc7, Rac8; 24. Bf4. White is a piece up and in good shape.
Jun-16-15  CHESSTTCAMPS: White has a strong bishop pair versus passive B+N. Assuming black's last move was e5, the alternative Nf6 would have lost to 20.Bf4 Q-moves 21.Be5 winning a piece. As it is, white wins a piece in a different way:

20.cxd5 exd4 21.d6+ Be6 (Kf6 22.dxc7 is even worse) 22.dxc7 with white's c-pawn a threat and black's d-pawn a goner.

Jun-16-15  CHESSTTCAMPS: The name of the losing player in this game will remind baseball geeks of this guy:
Jun-16-15  wooden nickel: <CHESSTTCAMPS> ... and the name of the winning player is a "full-base homerun" as far as alphabetically goes! This opening can also transpose from the "Alekhine Defense: Scandinavian Variation", interesting line!
Jun-16-15  Abdel Irada: Finding a tactic like the winning (pseudo)sacrifice in this game consists of two stages:

1) Finding the idea intuitively. This is where the first move should "jump out at you," and will if you recognize the underlying positional pattern.

2) Calculating to make *sure* it works. Tactical themes and motives are wonderful things, but falling into traps isn't. This position is simple: Black has no counterplay and no intermezzo. But this is not always the case, so this is why we don't make the "winning move" as soon as we see it.

Jun-16-15  DarthStapler: Got it easily
Jun-16-15  Mating Net: <Um, <lost in space>, you appear to be lost in time as well.> That was funny, I almost spilled my premium coffee. Some modest tactical daring with a dash of calculation and this puzzle is in the bag.
Jun-16-15  TheaN: Tuesday 16 June 2015 <20.?>

Fairly straightforward Tuesday. Monday was odd, now Tuesday is too. White's queen is en prise; if he's forced to move it, white will lose most of his attacking possibilities after 20....Nf6 and 21....Rad8.

White doesn't have to move her, but abuse the a2-g8 diagonal instead. After <20.cxd5 exd4 21.d6+ > white wins a piece and the combination basically ends there; there is no quick mate or anything, but black is dead lost.

Premium Chessgames Member
  Penguincw: Yesterday, I failed to get the Monday puzzle, but I'm at least feeling refreshed today.

I almost thought I would miss today as well, but then saw that the a2-g8 could be opened up with 20.cxd5 exd4 21.d6+ , but who's going to stop there. 3 pieces are being hit: the king (check), the queen and the rook. After that (even though it should be straight forward being up a piece), white can play moves such as 21...Be6 22.Bxe6+ Kxe6 23.Rhe1+ Kd7 24.Re7+ Kc8 25.Rxc7+ and white is up a piece and has a much better position.

Jun-16-15  patzer2: Instead of <18...Ke7? 19. c4! >, Black can put up much more resistance with 18... O-O-O (diagram below)

click for larger view

Here Fritz indicates the strongest continuation is 19. Bxd5! e5 (diagram below)

click for larger view

when White wins with the surprising 20. Bf4! Rge8 (20...exf4 21. Bxg8 ; 20...exd4 21. Bxc7 Kxc7 22. Bxg8 ) 21. Bf7 Re7 22. Qe3 Rxf7 23. Bxe5 Qa5 (diagram below)

click for larger view

24. a3! (+1.64 @ 22 depth, Deep Fritz 14) when play might continue 24...Re8 25. Qd4 b5 26. Rhe1 Kb7 27. Re3 Ka8 28. f3 Qa6 29. Bd6 Rxe3 30. Qxe3 Qc8 31. Re1 h5 32. Qg5 Qg8 33. h4 Rg7 34. Bf4 Qf8 35. b4 Kb7 36. Kb2 Bc8 37. Re2 Bd7 38. Bg3 Rg8 39. Qf4 Ka8 40. Qc7 Qc8 41. Re7 Qxc7 42. Bxc7 Bc8 43. Bf4 Bb7 44. c4 bxc4 45. a4 Rc8 46. Bd6 c3+ 47. Kxc3 Ba6 (47... Rg8 48. Kc4 a6 49. b5 axb5+ 50. axb5 cxb5+ 51. Kxb5 Rc8 52. Bc7 Ka7 53. c6 Ba6+ 54. Ka5 Bf1 55. Bf4+ Ka8 56. Kb6 Rb8+ 57. Rb7 Bxg2 58. Rxb8#) 48. Rg7 Bf1 49. Rxg6 (+3.68 @ 22 depth, Deep Fritz 14).

P.S.: Bottom line: Though Black was in trouble after 14...Bxc5? 15. dxc5 , White's clear winning combination begins after <18...Ke7?> with <19. c4! >. The win after 18...0-0-0 19. Bxd5! is difficult.

Premium Chessgames Member
  mjmorri: Why did Black move into a Bishop x-ray on move 18? Surely there was better.
Jun-16-15  Strelets: Responding to aggression with aggression is an important technique. Black pushes ...e5 to attack White's queen and instead of timidly retreating Åbling hit back with 20.cxd5!, having seen that he could take the queens off by means of the discovered check 21.d6+ (20.cxd5 exd4 21.d6+). White is up a piece and is easily winning.
Jun-16-15  AvidChessMan: For me, it’s a combination of a gut feel with an in-depth verification – because you can’t rely on gut feel alone. With 20. cd5, I did not see mate, but a very bad position for black. I noticed b3 bishop eying up the black king and also the opening of the e-file, if black took the queen. Lots of good moves for white once the black king is exposed.
Premium Chessgames Member
  kevin86: White can regain the queen, ending a piece ahead.
Jun-16-15  gars: <lostin space>; Are you also lost in time? Today is Tuesday, man!
Jun-16-15  BOSTER: Today, as very often, <CG> began the puzzle pos. too late, more exactly half move later.

No doubt that such pos. have tactical elements, but this is not a <puzzle>. This is why <Robespierre: the answer simply appeared without pondering>.

But the pos. black to play 19...was <puzzling> not only for CG players, but even for <Van der Meer>.

The problem was-how to save the piece.

Premium Chessgames Member
  offramp: <Abdel Irada: Finding a tactic like the winning (pseudo)sacrifice in this game consists of two stages: 1) Finding the idea intuitively...>

This seems to be the hard part.

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