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Alexandre Dgebuadze vs Pieter Claesen
Belgian Championship (2005), Aalst BEL, rd 9, Jul-10
Philidor Defense: Philidor Countergambit (C41)  ·  1-0



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sac: 17.O-O PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
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Aug-16-06  regulator: sweet ending
Aug-16-06  chessmoron: The rook sac was just calling for it, PLEASE QUEEN, TAKE ME!!! (17...Nf6)
Aug-16-06  RandomVisitor: Does Black have a better 17th move after 17. 0-0?

1: A Dgebuadze - P Claesen, Belgian Championship 2005

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Analysis by Rybka 2.1c mp:

1. (1.35): 17...Qb6 18.Qf5+ Nf6 19.Rb1 Qc6 20.Bg5 Qe4 21.Qb5 Re8 22.Qxb7 h6 23.Bxf6 gxf6 24.Qxa7

2. (1.37): 17...Qe4 18.Rb1 b6 19.Rb3 Nf6 20.Re3 Qg4 21.Bb2 Re8 22.Rxe8+ Nxe8 23.Qa4 a5 24.Qb3

(, 16.08.2006)

Aug-16-06  tTinker: My first analysis didn't work. What if white played 17. Bb2 instead of castling. 17. Bb2, Qe4+ 18. Kd2, Qf4+ 19. Kd3 and are there anymore checks!
Premium Chessgames Member
  Sneaky: Oh, of course! It's "defensive week" right, so what could be more defensive than O-O?
Aug-16-06  rookattack: For 17.Bb2,What if black responded with 17...Re8 18.Kf1,Qd3+ ,white's position looks perilous
Aug-16-06  tTinker: 19...Re8. Yeah, this is a little trickier than just castling, but would be fun to play over the board.
Aug-16-06  tTinker: The queen takes the rook with check then the bishop takes the queen. I could see that automatically.

17. Bb2, Re8+ 18. Q*R+ K*Q 19. B*Q

Aug-16-06  tTinker: 17. Bb2, a6 18. B*Q a*Q 19. c*b and white looks pretty good no matter what black does, he'll gain control of the board first with the iniative.
Aug-16-06  think: <tTinker>
I got exactly what you got.
Someone tell me what is wrong with Bb2?
Aug-16-06  aw1988: Bb2 Qe4+ I believe
Aug-16-06  ahmadov: As a player with about 2400 rating the black should have seen the dangers of 17...Qxa1.
Aug-16-06  aazqua: I must be missing something. What was the hard part about this puzzle?
Aug-16-06  dzechiel: Got this one pretty quickly. Of course, any move other than 17 O-O leaves white open to all sorts of nastiness on the e-file.
Premium Chessgames Member
  An Englishman: Good Evening: I found the correct move, but it was still astonishing.

For me, the real puzzle is unraveling Black's final mistake. I think that after White's 17th, the game is pretty close to over, but moves 12-16 look forced to me, unless Black has to passively acquiesce to a pawn minus. For example, I'm looking at 9...e3!?; 10.cxd4!?,Qxg5!?; 11.Bxe3. Obviously, none of that is forced. Or 6...c6. The complications are interesting.

Aug-16-06  prinsallan: What about 17 Rb1 -is it playable?
Aug-16-06  pebble767: Got it but I wasn't expecting the Queen to take the other rook, so I spent time in calculating mating the black king after 17.0-0 QxR 18.Bb2 Qa2 19.Qf5 Nf6 20.BxN gxB 21.Qxf6
Aug-16-06  erimiro1: Hello there Mr. Claesen, I have news for you: 3.-f5?! was the original idea of Philidor, when he developed his 1.e4 e5 2. Nf3 d6 system. Morphy also liked and used it. However this move is almost dissapeared from the modern chess board. Kasparov even called 3.- f5 "a bad, even a losing move".
Premium Chessgames Member
  al wazir: 1. <rookattack: For 17.Bb2,What if black responded with 17...Re8 18.Kf1,Qd3+> No, 18. Qxe8+ Kxe8 19. Bxd4.

2. White has other playable moves besides 17. O-O. I think 17. Ra2 and probably also Rb1 defend adequately against attacks along the e file. For example, 17. Ra2 Re8+ 18. Be3 Rxe3+ (18...Qc3+ 19. Ke2) 19. fxe3 Qxe3+ 20. Kd1 Qd3+ 21. Rd2, and white has threats along the f file and against the ♕side ♙s. (But there may be a better line for black.)

Premium Chessgames Member
  OhioChessFan: I thought Bb2 was a little better than 0-0, but couldn't really work out Black's play for either line. I didn't expect Qxa1.
Aug-16-06  crafty: 17. ♗b2 ♕e4+ 18. ♔d2 ♘f6 19. ♖ae1 ♕f4+ 20. ♔d3 d5 =   (eval -0.01; depth 13 ply; 1000M nodes)
Aug-16-06  legi: After 17.0-0 ♕x♖ 18.♗b2 ♕a2 white can win the black queen with 19.♖a1 ♕x♖ 20.♗x♕ ♖e8. This looks similar to the game but with somewhat like an extra tempo for black. Instead 19.♕xb7! seems to win instantly.
Aug-16-06  Snaeulf: well, 17. Bb2 Re8+ 18. Kf1 Qe3+ 19. Kg1 Qe2 20. g3 (h3) Re7 Here black hasn't got troubles IMHO.
Aug-16-06  EmperorAtahualpa: Argh, of course! 17.O-O, somehow I assumed that White couldn't castle anymore! The only thing I could come up with 17.Ra2 because I was paying (too) much attention to 17...Re8+.
Aug-16-06  Chess Lou Zer: Another one I couldn't find.
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