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Ljubomir Ljubojevic vs Judit Polgar
Monaco Amber blind 1994  ·  Sicilian Defense: Alapin Variation. General (B22)  ·  0-1
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sac: 24...Rxf3 PGN: download | view Help: general | java-troubleshooting

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Sep-29-04
Premium Chessgames Member
  Sneaky: These tips won't explain how to mate with BN but it does explain the philosophy behind the procedure:

(1) You herd the enemy king against the edge of the board. This should not be a memorized technique--you just have to use your natural chess skills to be a big bully with your two extra pieces.

(2) Invevitably he runs towards the "safe" corner. (One that is of the opposite color square as your bishop.) You can't stop him from doing this. So you follow him towards the safe corner.

(3) Then you eject him toward the mating corner, preventing his return to the safe corner, keeping him trapped against the edge of the board at all times.

(4) Here's where it gets tricky... at a certain point you have to allow the enemy king to escape the edge of the board!! If you think you can just force the king along the side all the way to his doom, you're wrong--you need to reposition and give him a little leeway in the process. For most players this is very scary--they fear that if the king escapes now they will have to start all over again and miss the 50 move deadline.

But if done correctly the king cannot escape and will be forced back into the corner of doom, and at the very end there is usually more than one way to actually finish the job.

Dec-04-05  avidfan: Position after the sac 24...Rf7xf3 25.g2xf3 up to move 32 is so full of tension, cross-pins and tactics against the queens by bishops on both sides. How can such complexities be visualised for 106 moves! It must be exhausting on the brain.


click for larger view

At move 41 the endgame becomes a battle of white rook against N and B.

At move 83 white gives up rook for the last black pawn yielding an ending where he is mated by N and B at move 106 - a most instructive game.

Mar-14-06  AlexanderMorphy: incredible game considering it was blindfold!
Aug-06-06  vizir: wow
Polgar-is-so-strong
Sep-18-06  amtr: this ended in stalemate
Sep-18-06
Premium Chessgames Member
  paulalbert: If Judit accidentally let this go to stalemate by Bh3 for example, it's too bad because she was perfectly set up for the mate. 105.... Kg3. 106. Kg1 ( only move but attacks N ) Bh3 ( protects N )107. Kh1 ( only move ) Nd2 ( setting up for Nf3+ ) 108. Kg1 ( back again to only square ) Nf3+ 109. Kh1 ( only move ) Bg2#

Playing blindfolded, perhaps she forgot that K was still on f2.

Paul Albert

Jun-21-07
Premium Chessgames Member
  Gilmoy: Um ... <paulalbert> 105..Bf3# :)
Aug-15-07
Premium Chessgames Member
  triangulation: mate can be forced in 33 moves from any position provided the king isn't winning a piece by forking the knight and bishop.
Aug-15-07
Premium Chessgames Member
  paulalbert: <Gilmoy> Just saw your comment from June. You are absolutely right. I was so focused on the mating pattern I use to force the B&N mate that I overlooked that it was immediate mate with a different pattern. Paul Albert
Aug-22-07  Rook in the 7th rank: Does anyone want to learn this endgame exactly? Go to http://en.wikipedia.org/wiki/Bishop...!
Feb-26-08
Premium Chessgames Member
  musicmanTRIBALx: what's with 27. ...d4?
Jun-12-08
Premium Chessgames Member
  Eggman: Thanks for that wikipedia link, <Rook in the 7th rank>.
Oct-18-08
Premium Chessgames Member
  Jonathan Sarfati: <vonKrolock>Here is a video explaining the Deletang three triangle method.

http://www.youtube.com/watch?v=PWZ7...

One chessplaying aquaintance said:

With the [standard] Philidor system I have around a 30% success rate. After viewing this twice, I'm mating fritz every time, its really simple and I could do it at 10 seconds a move with ease.

Oct-19-08
Premium Chessgames Member
  paulalbert: I watched the video. Another interesting pattern to achieve this mate. I use the big W method taught in Tarrasch's Game of Chess. Really easy pattern because the K goes across the board always on 6th rank and N goes in big W,( in case of White B ) F7,E5,D7,C5,B7. B must go to appropriate squares to take squares away from K or tempo moves until K in appropriate colored corner. This is so easy, even I can do this without sight of board. Once you learn an effective method, this mate is not really very hard. Paul Albert
Nov-21-08  withingrace: fun game to watch, that end game was humorous, end educational.
Dec-20-08  WhiteRook48: Why not just play the mate in 1 or did White resign right after Kh1?
Dec-28-08
Premium Chessgames Member
  Jonathan Sarfati: <paulalbert>, I didn't know it was in Tarrasch; has the book been published in English like 300 Chess Games? The method originally came from Philidor -- see a fascimile of his pioneering book "Analyse du jeu des échecs" http://books.google.fr/books?hl=fr&...
Jan-03-09
Premium Chessgames Member
  Kasputin: According to the chessbase site in the Amber Rapid tournament the players do actually see a board - it is a computer screen without pieces. But this article from the NY Times says that the players simply keep track in their heads:

http://gambit.blogs.nytimes.com/200...

I suspect that the chessbase description is the more accurate. Afterall, how do you settle any possible disputes? It would make sense if the moves are actually recorded on a computer - just not have the pieces visible to the players.

But the NY Times article does mention the time control for the blindfold games in the event: 25 minutes per game with a 20 increment each move.

Whether they see a blank chess set on a computer screen or not, this is impressive!

Jan-07-09  WhiteRook48: Why not just play 106...Bf3# right away?
Jan-12-09
Premium Chessgames Member
  Jonathan Sarfati: I understand that it's a blank chessboard, and the computer plays only the opponent's last move with nothing else. Players enter move with a mouse.
Jan-12-09
Premium Chessgames Member
  Jonathan Sarfati: In the all-GM game Robert Kempinski (2498) - Vladimir Epishin (2567) [E60] Bundesliga 0001 Germany (5.3), 07.01.2001, the winning side couldn't do it and stalemated after the 50-move rule had been exceeded http://en.wikipedia.org/wiki/Bishop...
Feb-01-10
Premium Chessgames Member
  Lucid Faia: Was this seriously played blindfolded?
Jul-26-10  I play the Fred: After playing over this game I went to practice the KBN ending again - I felt like such an idiot. Everything I'd read before about this ending stressed the need to force the enemy king into the same colored corner as your bishop - it never before occurred to me that the opposing king could walk into that mate on some other square:


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Jan-09-11  Davolni: I cant believe this game was played blindfolded!!!

WOWOW!!!!!

Sep-08-11  indoknight: the best alapin variation i've ever seen!
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