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Viktor Korchnoi vs Piet Bakker
Leeuwarden (1976), Leeuwarden NED, rd 4, Dec-??
English Opening: Symmetrical Variation. Botvinnik System Reversed (A36)  ·  1-0
ANALYSIS [x]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 4 OF 4 ·  Later Kibitzing>
Nov-09-16
Premium Chessgames Member
  agb2002: I just noticed I have almost repeated my eight year old post and wouldn't mind to experience the same feeling eighty years later...
Nov-09-16
Premium Chessgames Member
  YouRang: Wednesday 51.?


click for larger view

I found <51.Qe8+> quickly (what else is there to look at?), and then of course <51...Rxe8>


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My initial reflex was 52.dxe8Q+, but it simply loses after ...Kxe8. But then I realized that the discovered check from advancing the d-pawn permitted <52.d8Q+>


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And now cannot avoid big material losses and mate won't be far behind.

Nov-09-16
Premium Chessgames Member
  YouRang: lol - it is funny to realize that you solved the same puzzle 8 years ago -- and pretty much with the same line of reasoning. :-)
Nov-09-16  AlicesKnight: 51.Qe8+ Rxe8; 52.d8=Q+ looks good, if surprising. A K or R move loses the Q and a Q block of the check loses Q for R. If Black declines the Q at move 51 he simply loses a R and the vital placement of the two humble White QPs prevents a return fork by Black.
Nov-09-16  The Kings Domain: Easy but quite testy puzzle. Nice and clever one too. Black should have exchanged queens to lessen white's pressure with his passed pawn on the d-file.
Nov-09-16  leRevenant: Whaddayaknow, I got it, in a relatively short time. 3/3 - roll on tomorrow ...
Nov-09-16
Premium Chessgames Member
  Stonehenge: 50...Kg7 had to be played.

BTW Korchnoi came 45 minutes late for this game (http://resolver.kb.nl/resolve?urn=d...).

Nov-09-16  HowDoesTheHorsieMove: It would be nice to think that getting three in a row to start this week means I'm getting better. Alas, I'm pretty sure that's not true. This was just a very easy Wednesday.
Nov-09-16  Geronimo: Got this one. It's a good reminder that recapturing, here with 52.e8??, is not always required. I can't count the times during speed or bullet games that I've let my "equalize at all costs" reflex lead me from a superior or winning tactic. That said I would consider this an easy Tuesday puzzle at most.
Nov-09-16  stacase: 51. Qe8+ was there any other move to consider?

Noticing that promoting the Pawn discovers check is key.

Way too easy for a Wednesday.

Nov-09-16
Premium Chessgames Member
  morfishine: I'm too busy celebrating Trump's victory to worry about puzzles
Nov-09-16  steinitzfan: This is bizarre. I didn't get it. I got 51 Qe8+. I got 52 d8+. But after 52...Ke6, I thought that 53 Rxb6 would win by pinning the queen.
Nov-09-16  stacase: Off Topic:

<morfishine: I'm too busy celebrating Trump's victory to worry about puzzles>

I look forward to the construction of the last windmill.

Nov-09-16  WorstPlayerEver: Why? Pete? Why???
Nov-09-16
Premium Chessgames Member
  Sally Simpson: Getting old, either that or too suspicious. (probably a mixture of both.)

Saw the key move but in my mind after 51.Qe8+...


click for larger view

51..Kg7 52.Qxd8 Qd2+ is a perpetual pattern.

It seems so if White plays 53.Kf3 and so is 53.Kh3 - well at least I thought so until I finally realised when staring at the above diagram the WQ is on d8 and can interpose Qh6+ with Qh4. (doh!)

That Queen on h4 King on h3 pattern reminded me an analogous position I've seen somewhere.


click for larger view

Black played 1...Qe2+ and White did not fancy the idea of 2.Kg1 Qe1+ winning the c3 Rook so played 2.Kh3 (OOPS!) 2...Qg1+ and 3...Qf5 mate.

Nov-09-16  scormus: <sally, your analogous position>

https://www.youtube.com/watch?v=2ZB...>

just about says it all

Nov-09-16
Premium Chessgames Member
  kevin86: White gains a rook via promotion and double check!
Nov-09-16
Premium Chessgames Member
  YouRang: It is interesting to note how important white's Pc4 is in this puzzle.

If it's not guarding d5, then <51.Qe8+> can be met by <51...Kg7!>, which draws (52.Qxd8 Qd5+ and perpetual).

Nov-09-16
Premium Chessgames Member
  Lighthorse: Wow <Sally Simpson>..that position you posted where White is mated trying to avoid a perpetual is a really great one! Thanks!
Nov-09-16  awfulhangover: Wow! I cannot believe how I could miss such an easy solution! And now I read that I'm not alone with this blindness. Haha, it's so weird how our analog brains works or fails to calculate. Maybe it's because years of pattern recognition stops us from seeing how "simple" this is.
Nov-09-16
Premium Chessgames Member
  whiteshark: <YouRang: lol - it is funny to realize that you solved the same puzzle 8 years ago -- and pretty much with the same line of reasoning. :-)> Same here! ;)
Nov-09-16
Premium Chessgames Member
  chessgames.com: Because we always have lots of new members and chess beginners show up during World Championships, we decided to scale back the puzzles and keep them on the easy-side for this week. And so Monday was brainless, Tuesday was like a Monday, this is more like a Tuesday.

But don't get too complacent—it gets tougher from here, we promise!

Nov-09-16  NBZ: Missed it! I looked at Qe8+ Rxe8 but only considered d8=N+(??). Then I switched to Qf3+ trying somehow to exchange into a winning rook ending, with discouraging results.
Nov-09-16  peristilo: English, please!
Nov-09-16  peristilo: I'm pretty good at tactics. I'm around 2500 at lichess and 2300 at chesstempo. But I totally missed this one. It may be simple for some people but it's very tricky for others, believe me.
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