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Lars Schandorff vs Thomas Willemze
8th Batavia Chess Tournament (2016), Amsterdam NED, rd 5, Feb-23
Indian Game: Knights Variation. General (A46)  ·  1-0

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Nov-14-17  Olsonist: That there's a free knight.
Nov-14-17  saturn2: RxN and black cannot retake
Nov-14-17  newzild: Took me longer than Sunday!
Nov-14-17
Premium Chessgames Member
  Once: It's a PPP - piece protects piece. The black bishop is defending against two threats - Rxb6 and Ne7+. Make him choose one and then impose the other.

Fun

Nov-14-17  leRevenant: Easyweek (at least for starters) is a pleasant change. <newzild:> surprises me.
Nov-14-17  morfishine: <27.Rxb6> and thats that

*****

Nov-14-17
Premium Chessgames Member
  thegoodanarchist: 27.? White to move would make a good Monday puzzle :)
Nov-14-17  Squire49: Agree, rather a Monday puzzle.
Nov-14-17
Premium Chessgames Member
  patzer2: <Once> Technically, I suppose 27. Rxb6! is an "overloading" or "overworked piece" tactic which exploits the fact that the Bishop on d8 cannot simultaneously protect the Knight on b6 and guard against a royal fork on e7.

However, I still like your PPP for helping novices learn the tactic. Maybe we could add PPP&S -piece protects piece and square as a separate category.

Nov-14-17
Premium Chessgames Member
  mjmorri: <FSR ♫♪♫ Basically, it's as easy as pie. ♫♪♫> Len Barry LOL.
Nov-14-17  WorstPlayerEver: The Knight dominates the Bishop. It only needs a little help.
Nov-14-17  ChatGrognon: Got it :) ...The bishop had clearly too much to do!
Nov-14-17  morfishine: Classic overload: Can't be in two places at the same time!

*****

Nov-14-17  BOSTER: Maybe the best way to escape overloaded tactics was unpin black queen playing 23...Qe8.
Nov-14-17
Premium Chessgames Member
  kevin86: RxN and black must lose a piece or the queen will be forked at e7! Easy as pie, but not as easy as pi 3.14159265358979...
Nov-14-17  BOSTER: <notyetagm: 3 seconds>. What keep you so long?
Nov-14-17
Premium Chessgames Member
  FSR: kevin86 - pi isn't so easy, or at least (before computers) it didn't used to be. There were some people who spent decades of their lives calculating pi.
Nov-14-17  TheaN: <27.?>

A lot more clear than last week (typically the two puzzles I've done now in a week are two Tuesdays). Material is even, and white overloads Bd8 with <27.Rxb6> basically ending the game on the spot. Black has no reasonable lines to consider. He either goes down a full piece or more in all variations, the main point being <27....Bxb6 28.Ne7+ 1-0>

Nov-14-17  yureesystem: IM Willemze was asleep at the board, not seeing 24.d5! shouldn't be too difficult for a IM to see this very dangerous move 24.d5! coming, we can excuse a CM failing to see it. After 25.Nxd5 Bd8?? this move is a blunder and lose a piece, much better is 25...Qxd5 26.Qxd5 Nxd5 27.Rxa8 Rxa8 28.Ra8+ Kg7 and black just lose the exchange. Even strong players succumb to simple tactics; I believe tactical study should be done everyday, I know two very strong FM before a tournament concentrate on tactics study to keep sharp in their games.
Nov-14-17  DrGridlock: Took me a while to identify that black's bishop on d8 was over-worked. I first looking for a way to jam White's queen into g7 and ways to gain tempos to do that. Next I noticed that Black's queen was unguarded, and that an uncovered attack on it by a knight check from d5 to f6 would be lethal. Finally found the over-worked bishop which was the key to the puzzle.
Nov-14-17  AlicesKnight: Late seeing this today. Oh - not complex; Rxb6 wins a piece, as recapture by the B allows the N fork on K and Q....
Nov-14-17
Premium Chessgames Member
  Willber G: <FSR: kevin86 - pi isn't so easy, or at least (before computers) it didn't used to be. There were some people who spent decades of their lives calculating pi.>

Here is Kate Bush's rather nice take on it:

https://www.youtube.com/watch?v=W8R...

Nov-14-17  Cheapo by the Dozen: I found this to be of fair Tuesday difficulty, perhaps spending a full minute to solve it. The bishop didn't jump out at me as a candidate to be overloaded, so I didn't solve the problem until I ran through the list of forcing moves and their consequences.
Nov-14-17  Bubo bubo: The black bishop is overloaded: it has to protect the knight and must guard e7 against the royal fork. Hence 27.Rxb6 simply wins a piece.
Nov-14-17  Nullifidian: 27. ♖xb6

If 27... ♗xb6, then 28. ♘e7+ followed by ♘xc6

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