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Joshua Waitzkin vs Alexander Shabalov
New York op (1993), New York, NY USA, rd 5, Apr-??
French Defense: Exchange. Monte Carlo Variation (C01)  ·  0-1

ANALYSIS [x]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Nov-22-21
Premium Chessgames Member
  raymondhow: < Not your usual easy Monday. Seeing 27 ... Qd3 took half a minute or so. > Took me more like 3 minutes, I almost wanted to play Qb3 which would've been a disaster.
Nov-22-21  mel gibson: <raymondhow: Took me more like 3 minutes, I almost wanted to play Qb3 which would've been a disaster.>

27...Qb3

and
27... Re4

are both winning moves according to Stockfish 14.

Nov-22-21
Premium Chessgames Member
  al wazir: The only win I could see was 27...Qd3, threatening the ♖ on b1 and 28...Qd1+ 29. Rxd1 Rxd1#. The white ♕ can't safely move to give the ♔ an air hole. If 28. g3, then 28...Qxb1+ 29. Kg2 Qxa1, and now the ♘ on a2 is lost as well, because it has no way to escape from the ♕. If 28. Rf1, then 28...Qxf1+ 29. Kxf1 Re1#. If 16. Nc3, then 28...Qxb1 Nxb1 29. Rd1#.

I thought I must be missing something easier -- this is a Monday puzzle, after all.

Nov-22-21  CaliWest: Does 27...Qb3 work, too? That was my first thought.
Nov-22-21  saturn2: <CaliWest: Does 27...Qb3 work> I think so.
Nov-22-21
Premium Chessgames Member
  agb2002: Black is one bishop down.

White threatens Bxd4.

White's back rank is weak and the rook on b1 is defenseless. This suggests 27... Qd3:

A) 28.Rf1 Qxf1+ 29.Kxf1 Rd1#.

B) 28.Rcb7 Qd1+ 29.Rxd1 Rxd1#.

C) 28.Rc1 Qd1+ as in B.

D) 28.Nc3 Qxb1+ and mate next.

E) 28.g4 Qxb1+ 29.Kg2 Qe4+ 30.f3 (30.Kf(g)1 Rd1#) 30... Rd2+ 31.Kh1 Qe1+ 32.Qg1 Ng3#.

Nov-22-21
Premium Chessgames Member
  raymondhow: < 27...Qb3 ... winning move according to Stockfish 14. > so it is, I was looking at the analysis wrong.
Nov-22-21  AlicesKnight: Like <Caliwest> I went first for ... Qb3.
Nov-22-21  mel gibson: < raymondhow: < 27...Qb3 ... winning move according to Stockfish 14. > so it is, I was looking at the analysis wrong.>

Yes -
I put 27...Qb3 into Stockfish 14 -
the result is here:

27... Qb3

(27. .. Qb3 28. Rxg7+ (♖c7xg7+ ♘f5xg7 ♕h2-b8 ♖d4-d1+ ♔g1-h2 ♖d1xb1 ♕b8xb3+ ♖b1xb3 ♗a1-d4 ♔g8-f7 c5-c6 a7-a5 ♘a2-c1 ♖b3-b1 ♘c1-a2 ♘g7-e6 ♗d4-e3 ♖b1-b3 h3-h4 ♖e8-c8 ♘a2-c1 ♖b3xe3 f2xe3 a5-a4 ♘c1-a2 ♖c8xc6 ♔h2-g3 ♖c6-c2 ♘a2-b4 ♖c2-b2 ♘b4-d3 ♖b2-b3 ♔g3-f3 ♖b3xd3 ♔f3-e2 ♖d3-c3 e3-e4 a4-a3 ♔e2-d1) -11.13/32 531)

score for White -11.13 depth 32.

Nov-22-21  Stefan Lukke: Chess games.com is a great database but the puzzles are becoming more and more like Alexander Kotov studies from 'Think Like a Grandmaster'. The amount of computer analysis above and below says it all.
Nov-22-21  awfulhangover: I was looking for a brutal win, but did not find it. It´s a relief that other patzers became confused too.
Nov-22-21  mel gibson: <Stefan Lukke: Chess games.com is a great database but the puzzles are becoming more and more like Alexander Kotov studies from 'Think Like a Grandmaster'. The amount of computer analysis above and below says it all>

<awfulhangover: I was looking for a brutal win, but did not find it. It´s a relief that other patzers became confused too.>

It's not a typical Monday puzzle - more a Saturday puzzle.

Nov-22-21  Pawn Slayer: I missed 27...Qd3 completely. I went for 27...Qb3. The analysis shows that that does win eventually.. This is far from a Monday puzzle!
Nov-22-21
Premium Chessgames Member
  chrisowen: Liker o auldy Qd3 finish abbu vam lab liker o auldy tag gas gratin vagrant mow its quandary v i a quincy jihad cud cup boffin fozzie v elk soz its late v its theign rim puddy cab backy bonfire v i jaws doe its duck ie ooh deck duff v clang goodness mack gi v had hog aorta its jog heh vas hang in it attack vas doh blubb had cuffy q fag clungoff otb tab jz its clock i jah zilch pain cuffed its da vantage its bade its shrug knight rev dead c nah tower hello it eg nack hag wit choosed joe fit fag v i with i v cdt its knight honk hire v bad c gulf vehicle bug kid barbequed it ash u key at whizz it v akin axe v ins land q habanero on x a tree v i a bash its a vol ahs v i twiglet piglet christmas light record red rocks v right said fred its time waits for no man boa knight toff be careful Qd3 box;
Nov-22-21  little ernie: Cooked
Nov-22-21  landshark: I found Qd3 -
It's my first Monday solve in a couple of weeks (:
Nov-22-21
Premium Chessgames Member
  al wazir: 19...Bc4 20. Qf4 Re2 (if 20...Bxf1, then 21. Qxf7+) 21. Bc1 Rc2 would have been interesting. The ♘ can't move because of 21...Ne2+.
Nov-22-21
Premium Chessgames Member
  paulalbert: This is more subtle puzzle than the usual Monday, but the back rank mate theme was obvious, so (since no immediate check or sacrifice works ) need to put the Q on a square with multiple threats. Qd3 does it because it can sacrifice on f1 for the R that goes there to defend the back rank as well as the usual back rank capture or sacrifice threats. Q is the hero, R gets the glory of victory. Just like football ( soccer ), goal scorer gets the recognition, player who made the brilliant assist pass less so.

Was able to spot quickly, but not instantaneously as is usual for most Mondays.

Nov-22-21
Premium Chessgames Member
  Jimfromprovidence: There's a very good side puzzle after 27 Rf1, below, instead of the text 27 Nxa2.


click for larger view

Black to play and win.

Nov-22-21
Premium Chessgames Member
  Willber G: <Jimfromprovidence: There's a very good side puzzle after 27 Rf1, below, instead of the text 27 Nxa2.>

I'd play Bc4.

Nov-22-21
Premium Chessgames Member
  HeMateMe: Couldn't find the back ranker until i realized that attacking the rook with Q-d3 gives black no defense. 3 minutes, more like a Tuesday or Wednesday puzzle.
Nov-22-21
Premium Chessgames Member
  PawnSac: < Willber G: <Jimfromprovidence: There's a very good side puzzle after 27 Rf1, below, instead of the text 27 Nxa2.> I'd play Bc4. >

yes definitely! My eyes went right to that! save the B, guard b5, and attack Rf1. Good for at least a tempo~ lol

Nov-22-21
Premium Chessgames Member
  eternaloptimist: I chose 28...♕b3 like some of u guys & it gets the job done just like ...♕d3
Nov-23-21  Granny O Doul: Subtler than a typical Monday, but if you find 1... Qd3 or ...Qb3, the win is trivially easy. The fact that someone posts 25 moves of computer analysis does not mean it is necessary for a player to see 25 moves ahead.
Nov-23-21  TheaN: <Stefan Lukke: Chess games.com is a great database but the puzzles are becoming more and more like Alexander Kotov studies from 'Think Like a Grandmaster'. The amount of computer analysis above and below says it all.>

Not cause and effect: the puzzles aren't becoming harder to require computer analysis, we have computer analysis to dive deeper into puzzle lines.

<Granny O Doul> actually summed it up right. <mg> always posts an entire analysis line, where in this case <27....Qd3 28.Rxg7+ Nxg7 29.Qb8 Rxb8 30.Rxb8+ Rd8 -+> makes it obvious White can only throw heaps of material to not be mated.


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