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Vlastimil Jansa vs Jan Smejkal
CSR-ch International (1969), Luhacovice CSR, rd 12, Jun-02
Sicilian Defense: Najdorf Variation (B98)  ·  0-1

ANALYSIS [x]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 4 OF 4 ·  Later Kibitzing>
Apr-13-21
Premium Chessgames Member
  agb2002: Black has the bishop pair for a bishop, a knight and three pawns.

White threatens mate next.

Black's dark square bishop can reach c1 to deliver mate after 34... Qxb2+ 35.Kxb2 R8a2+ 36.Kc1 Ba3#.

Apr-13-21  Walter Glattke: White threatens mate in one, therefore 34.-Rxb1+!? 35.Kxb1 Qa1+ 36.Kd2 Rd8+ 37.Kd3 Bc5+ 38.Kd2 Qxb2+ 39.Rd2 Rxd2+ 40.Qxd2 Qxd2+ 41.Kxd2 Kxg7 +- The both Czech IM play 34.-Qxb2+ 35.Kxb2 R8b2+ 36. Kc1 Ba3# Interesting defense idea as training was 34.-fxg6 35.Qh8+ Kf7 36.Bh5 Rxb1+ 37.Kxb1 Bxh1 38.Rc1+Bf6 39.Bxg6+ Kxg6 40.g8Q+ Rxg8 41.Qxg8+ Bg7 42.Rxh1-+
Apr-13-21
Premium Chessgames Member
  drollere: i went for 34. .. Qxb2+, 35. Kxb2 R8a2+, 36. Kc1 Ba3#. i spent most of my 1 minute inspection time puzzling whether fxg6 would let black escape the threatened mate. it doesn't.
Apr-13-21  saturn2: Three checks and forced answers. 34...Qxb2+ 35. Kxb2 R8a2+ 36. Kc1 Ba3++
Apr-13-21
Premium Chessgames Member
  opus: 35. Kxb2 R8a2+ 36. Kc1 Ba3#

photofinish

Apr-13-21
Premium Chessgames Member
  Breunor: Took me a while, looked at so many lines, but finally got it. But I wouldn't have seen it if I hadn't been told black to play and win.
Apr-13-21  Brenin: 34... Qxb2+ was not hard to see, once I had rejected Rxb1+. Clearly 34 Qxh6 was a blunder, but White was lost anyway, e.g. 34 gxf7+ Kxg7 35 Rhg1+ Kh7 36 Qe2 Qa2 37 Qc2 Ba4, winning significant material.
Apr-13-21  Nullifidian: 34... ♕xb2+ 35. ♔xb2 ♖8a2+ 36. ♔c1 ♗a3# (the knight is pinned)
Apr-13-21  AlicesKnight: 34. ... Qxb2+; 35.Kxb2 R8a2+ forcing mate - just in time. Did White miss the Q sac or the bishop's final move utilising the pin?
Apr-13-21  lost in space: 34... Qxb2+ 35. Kxb2 R8a2 Mate
Apr-13-21  TheaN: This was as obscure for me as it was 13 years ago, I guess that's just personal recognition. I did eventually see the entire line again, so that's at least something. What also baffles me is why a Monday in 2008 is a Tuesday in 2021... did we regress? Unlikely :>.
Apr-13-21
Premium Chessgames Member
  HeMateMe: Yesterday's puzzle did not feel like a Monday.
Apr-13-21  belgradegambit: Whatever happened to <YouRang>?
Apr-13-21  1g1yy: My first thought at this was a different line starting with 34...Qxc3+ 35. bxc3 Ba3+ but it fails...

With as often as I miscalculate flight squares, I try to avoid Q sacs when possible. :D

Apr-13-21
Premium Chessgames Member
  chrisowen: Groups vocals Qxb2+ fluffs oblong vam bambinos vam uba guv blight it was one ditch in it meds eeljar bob mates 3 ivory bubble guv groups i vocals not frocks i guv dalmations luv moveys ie jab grabber i win against quagmire ova roughs ups guv i hitz its tonk u evasive galled it penny drops har crew vet addition likely against aquakong dither beauty gag Qxb2+ fab;
Apr-13-21
Premium Chessgames Member
  thegoodanarchist: Easier than yesterday.
Apr-13-21  cormier: SF Depth 26

-10.01 26....c4 27.Qc3 Qb6 28.Rd2 Ra2 29.b3 Bc5 30.g5 cxb3 31.cxb3 Bd4 32.Qxb4 Qxb4 33.Rxa2 Qxb3 34.Rc2 Qxf3

-9.77 26....Qb6 27.Qc3 c4 28.Rd2 Ra2 29.b3 Bc5 30.g5 cxb3 31.cxb3 Bd4 32.Qxb4 Qxb4 33.Rxa2 Qxb3 34.Rd2 Qxf3

-7.81 26....Qb7 27.Qc3 Ra2 28.b3 c4 29.Nd2 cxb3 30.Nxb3 Qa6 31.Rd8+ Kh7 32.g5 Rxb3 33.g6+ fxg6 34.fxg6+ Kxg6

Apr-13-21  cormier: SF Depth 24

-2.80 21.h4 Ra8 22.Qd3 Nd7 23.Nd5 Bxd5 24.Qxd5 Nb6 25.Qd2 Rba4 26.Be2 Qa7 27.c3 Rb8 28.Bb5 Nc4 29.Qd5

Apr-13-21
Premium Chessgames Member
  chrisowen: Add it it in bah taper black bad germaine street parlour and flush ide no think no?
Apr-13-21  cormier: SF Depth 25

-1.35 18.Nd5 Bxd5 19.exd5 Rfc8 20.c3 Qb6 21.h4 h5 22.Rh3 a5 23.Qe3 Qxe3 24.Rxe3 Bd8 25.Nc1 Kh7 26.Rh3

-2.30 18.Bf3 b4 19.axb4 Rxb4 20.Qxa6 Rfb8 21.h4 Nxe4 22.Bxe4 Bxe4 23.Nxe4 Rxe4 24.f6 gxf6 25.Qd3 Qc4 26.Qxc4

Apr-13-21  cormier: SF Depth 36

-1.82 17....b4 18.axb4 Rxb4 19.Qxa6 O-O 20.Qa5 Qxa5 21.Nxa5 Rfb8 22.Nb3 Nxe4 23.Nd5 Bxd5 24.Rxd5 Nc5 25.Bd1 e4

-1.66 17....O-O 18.Nd5 Bxd5 19.exd5 a5 20.Nd2 Rfe8 21.Bf3 Qd7 22.Ka2 Rec8 23.Rb1 b4 24.Rhc1 Qc7 25.c3 Qa7

Apr-13-21  cormier: SF Depth 30

-0.96 17.Nd5 Bxd5 18.exd5 O-O 19.g4 Rfc8 20.Bd3 Qd7 21.Qg2 Rc4 22.Bxc4 bxc4 23.Nc1 Qb5 24.b3 e4 25.h4

-1.64 17.Rhe1 O-O 18.g4 b4 19.axb4 Rxb4 20.Bxa6 Qa7 21.Bd3 Nd7 22.Qe2 Bb7 23.g5 Bxg5 24.Nb5 Qb6 25.Bc4

Apr-13-21  cormier: SF Depth 30

-0.50 16.Bxf6 Nxf6 17.Nd5 Bxd5 18.exd5 O-O 19.g4 Rfc8 20.Bd3 Qb6 21.h4 Rc4 22.Bxc4 bxc4 23.g5 cxb3 24.c4 The computer doesn't scan yet for <20... Qd7> as in the last post

Apr-13-21  cormier: SF Depth 33

-1.06 16.Bxf6 Nxf6 17.Nd5 Bxd5 18.exd5 O-O 19.g4 Rfc8 20.Bd3 <Qd7> 21.h4 Rc4 22.Bxc4 bxc4 23.Nd2 Qb5 24.b3

Apr-14-21
Premium Chessgames Member
  gawain: 34...Qxb2+ was not the first move I considered. And not the second or third, either!

But I eventually did find it.

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