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Janos Rigo vs Lutz Espig
Leipzig SG (1977), Leipzig GDR, rd 2, Oct-30
Sicilian Defense: Scheveningen. Modern Variation (B83)  ·  1-0



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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Jun-28-18  landshark: Got me. I didn't consider ...Qb6+.
Nice puzzle.
Jun-28-18  landshark: I think 27.Bf8+ is even faster than the game line.
Premium Chessgames Member
  al wazir: Got it.

The ♙ capture 27. Bxe5+ is irrelevant. I would have played 27. Bf6+. The rest of the sequence is the same: 27...fxg6 28. Qxg6+ Kf8 29. Bg7+ Kg8 30. Bh6+ Kh8 31. Qg7#.

Jun-28-18  gofer: I managed to dismiss <24 Rxf7> due to <24 ... Qc5+>, but that took a while because although I liked the simple <24 Bxe5> (like <Walter>) I didn't really feel that it was a positional "slam-dunk", nearly - but not quite. I didn't find the beautiful interference move <24 Rf6> and so went back and went with...

<24 Bxe5 Bxg5>
<25 Bxf5 ...>

click for larger view

Now, White has two very active bishops for the loss of the queen. If white can just activate Rd1 onto either the f file or the h file, then black is probably in real trouble. But, is this okay for white ?!?!

Well, according to Stockfish, its only a stalemate at best, by three-fold repetition...

1) =0.00 (31 ply) 1...Rf8 2.Rd3 Rae8 3.Rdf3 a5 4.Kh1 Qd7 5.Bh6 Qg4 6.Kg1 Qh4 7.Rh3 Qe7 8.Rhf3 Qc7 9.Kh1 Qxc2 10.Rxf7 Rxf7 11.Rxf7 Kh8 12.Bg7+ Kh7 13.Bf8+ Kh8 14.Bg7+


Jun-28-18  morfishine: Janos, Appallus, Gorgeous & Rigo
Premium Chessgames Member
  takchess: I thought Queen x g6 + followed by a bishop check might set up a windmill but the king walks out of danger. didn't consider the correct move
Jun-28-18  malt: Have 24.Rf6 B:b3 25.R:g6+ Kh8 26.Bg7+ Kg8
27.Bf6+ fg6
(27...Kf8 Rg8# )
28.Q:g6+ Kf8 29.Bg7+ Kg8 30.Bh6+ Kh8 31.Qg7#

First went for 24.Q:g6+

Jun-28-18  Mayankk: Took the Rxf7+ route. Ah well.
Premium Chessgames Member
  agb2002: Black threatens Bxg5.

White can try to exploit the weakness of g6 with 24.Rf6:

A) 24... Bxf6 25.Qxf6 and mate in three.

B) 24... Bxb3 25.Rxg6+

B.1) 25... fxg6 26.Qxg6+ Kh8 27.Qg7#.

B.2) 25... Kf8 26.Rg8#.

B.3) 25... Kh7 26.Rg7+ Kh8 27.Rh7+ Kxh7 28.Qg7#.

B.4) 25... Kh8 26.Bg7+ Kg8 (26... Kh7 27.Qh6+ Kg8 28.Qh8#) 27.Bxe5+ fxg6 (else mate next) 28.Qxg6+ Kf8 29.Bg7+ Kg8 30.Bh6+ Kh8 31.Qg7#.

C) 24... Bf8 25.Bxd5 wins a piece.

D) 24... Bxe4 25.Qxg6+ Kh8 26.Qg7#.


Another option is 24.Bxd5 (24.Rxf7 Qc5+ 25.Qe3 Qxe3+ 26.Bxe3 Bxf7 - +) 24... Bxg5 (24... Qc5+ 25.Qe3 wins a piece) 25.Bxg5:

A) 25... Qc5+ 26.Kh1 (Rf2 pins the rook)

A.1) 26... Qxc2 27.Rc1 Qd3 28.Rf3 (28.Rxf7 Qxd5 29.exd5 Kxf7) 28... Qe2 29.Rxf7 (threatens Rf2+ and Rxe2)

A.1.a) 29... Kh8 30.Bf6+ Kg8 31.Rg7+ Kf8 32.Rg8#.

A.1.b) 29... Qh5 30.Re7+ Kf8 (30... Kh8 31.Bf6#) 31.Rf1+ and mate next.

A.2) 26... Rf8 27.Rd3 Qb5 28.Rdf3 and Black looks defenseless against Kg1-Bf6-Rh3-Rh8#.

A.3) 26... Kf8 27.Rxf7+ Ke8 (27... Kg8 28.Re7+ as in A.1.a.ii) 28.Re7+ Kf8 29.Rf1+ Qf2 30.Rxf2#.

B) 25... Qxc2 26.Rc1 (26.Rxf7 Qxd1+ 27.Rf1+ Qxd5 - +) as in A.1.a.

C) 25... Rf8 26.Rd3 as in A.1.b.

D) 25... Kf8 27.Rxf7+ Qxf7 28.Bxf7 Kxf7 29.Bxd8 Rxd8 30.Kf2 with an extra pawn and the better endgame.


I think I'd play 24.Rf6.

Jun-28-18  Walter Glattke: According to Stockfish and C) black is one move earlier with 26.Rd3 Rae8 27.Bf6 Re6 28.Rh3 Rxf6 to parry the mate-attack.
Premium Chessgames Member
  Richard Taylor: I missed this one. I thought it was Rxf7 which looked "thematic"!. I saw Qc5+ but thought White was still winning. Didn't spend more than 5 minutes on it though.
Jun-28-18  Carlos0012358: 24.......Bxb3 is a very peculiar choice, like eating dessert while having a heart attack. 26......Kh7 might have been a more prudent approach, although white is way in front and it would have matter in any case.
Jun-28-18  Gilmoy: The sexy move is <24.Qxg6+ fxg6 25.Bxd5+ Kh7> whoops <26.Bc1/Be3 Bf8> fizzle.

So we must deal with Be7, while we would still like to overwhelm g6. I eventually spotted <24.Rf6> -- ironic because I <have> played it before, so it should have been more obvious.

<25..Kh8 27.Bxe5+> is necessary, so that the K does not escape through f7.

Premium Chessgames Member
  Breunor: Also went for Rxf7, ahhh good puzzle. Didn't even look at Rf6.
Jun-28-18  Walter Glattke: I found an E) with 24.Rf6! Kh7, where white wins 2 pawns after 25.Bxd5 Bxf6 26.Qxf6 Kxh6 27.Bxa8 Rxa8 28.Qxd6 or 27.Bxf7 Rg8 28.Bxg8 Rxg8 29.Rxd6 ...29.Qxc2?? 30..Qh4+ Kg7 31.Rd7+ Kf8 32.Qe7#
Jun-28-18  Whitehat1963: Yesterday easy. Today, not so much. Missed it bigly.
Jun-28-18  cormier: Notes by Stockfish 8 13... Nd7 better is 13...b6 14.Kh1 Qc7 15.Bd3 Rad8 16.Qe2 d5 17.Bxf6 Bxf6 = 0.00 (33 ply)
Premium Chessgames Member
  Jimfromprovidence: It took a while to see what to do after 24.Rf6 Kh7 but eventually 25.Bxd5, below, with the idea of 26 Rxf7+ looked good.

click for larger view

If black follows with 25...Bxf6 then 26 Qxf6 and if 26...Kxh6 then 27 Rd3 with the threat of 28 Rh3# wins.

click for larger view

Jun-28-18  Walter Glattke: D) 24.-Bxe4 25.Qxg6+ Kh8? 25.-Bxg6
25.Bxf7+ Kh8 26.Qh4 Qc5+ 27.Kh1 Bg2+ 28.Kxg2 Qc2+ 29.Bd2+ Kg7 30.Qh6+ Kxf6 31.Rf1+ Qf5 32.Qxg6#
Aug-19-18  patzer2: I had not previously viewed today's Sunday puzzle, because I was on vacation when it was a Thursday puzzle on Jun 28, 2018. The winning shot 24. Rf6! is pretty, but the moves that set it up are to me even more interesting and instructive.

White's 20. Bc4! ± (+1.91 @ 28 ply, Stockfish 9) is the strong move that initially sets up the combination.

The follow-up move 22. Qg5! ignores Black's threat 22...bxc3?? because of White's mate threat 22...Bxc3?? 23. Qxg6+ Kh8 24. Qg7#.

Due to the mate threat 23. Qxg6+ Kh8 24. Qg7#, Black was forced to occupy and block the d5 square. However 23...Nd5?, which allowed the strong reply 24. Nxd5! +- (+5.01 @ 29 ply, Stockfish 9) was the wrong way to block d5.

Instead, 23...d5 24. Rxf6 Rd6! 25. Nxd5 Rxf6 26. Bxa8 Rf4 27. Qg3 Qxc2 28. Qe1 g5! ± (+0.35 @ 37 ply, Stockfish 9) would have given Black a fighting chance.

Early in the opening, I slightly prefer the active move 9...e5 = as in Black's win in the interesting game R Praggnanandhaa vs D Andreikin, 2017.

Aug-19-18  sfm: Thanks to many, not the least P2 and JimFP. I didn't even consider the natural 24.-,Kh7, which is the strongest defense, still hopeless though.

As for 22.-,d5!! still being near-equal, that is a surprise, isn't it? To me the black position looked rotten. That the variation given by P2:
<Instead, 23...d5 24. Rxf6 Rd6! 25. Nxd5> [Here u forgot -,BxN BxB] <Rxf6 26. Bxa8 Rf4 27. Qg3 Qxc2 28. Qe1 g5! ± (+0.35 @ 37 ply, Stockfish 9) would have given Black a fighting chance.> is something which you need to be a computer to figure out, I think.

Well played by White in the opening, putting Black under much pressure, forcing him to find the only-move 22.-,d5. That is the art of winning.

I love Larsen's comment to one of his games "... there is nothing wrong with Black's position here, apart from that it is difficult!"

Aug-19-18  sfm: On a side node, in these days, with the threats of global warming, chess playing parents here planning for babies should look to the short names of this players as a way to reduce usage of resources, each using 10 characters only, including the space. A couple of days ago we had "Evgeny Emmanuilovich Gleizerov vs Michal Vladimirovich Krasenkow". Irresponsible.
Aug-19-18  Strelets: 24.Rf6! puts the cherry on top of the Rigó Jancsi thanks to the weakened dark-square complex round Black's king. Knowledge of common attacking motifs enables you to give up large quantities of material in pursuit of checkmate.
Aug-19-18  patzer2: Correction: The improvement for Black is 22...d5 ⩲, instead of 22...Nd5? 23. Nxd5 +-, and the line goes 22...d5 23.Rxf6 Rd6 24.Nxd5 Bxd5 25.Bxd5 Rxf6 26.Bxa8 Rf4 27.Qg3 Qxc2 ⩲ (+0.32 @ 44 ply, Stockfish 9).
Premium Chessgames Member
  PawnSac: < landshark: I think 27.Bf8+ is even faster than the game line. >

click for larger view

There are 4 main candidate moves:
Bxe5+ / Bf6+ / Bh6+ / and your suggestion Bf8+

if 27. Bh6+ Kh8 ( not ..Kh7 28. Rg7+ Kh8 29. Rh7+ Kxh7 30. Qg7# ) 28.Bg7+ Kg8 repeats the position

Bxe5+ and Bf6+ are the same..

27.Bxe5+ fxg6 28.Qxg6+ Kf8 29.Bg7+ Kg8 30.Bh6+ Kh8 31.Qg7#

27. Bf6+ fxg6 28.Qxg6+ Kf8 29.Bg7+ Kg8 30.Bh6+ Kh8 31.Qg7#

but after your suggestion..

27. Bf8+ fxg6 28. Qxg6+ Kxf8 29. Rf1+ Bf6 30. Rxf6+ Bf7 ( ..Ke7? 31. Qg7+ Ke8 32. Rf8# ) 31. Qh6+ Kg8 32. Qg5+ Kf8 33.Qh6+ = repetition ( 33. Rh6? Ke8 34. Qf6 Qe7 and black is winning )

in this line, if instead of 31...Kg8 black plays 31...Ke8 32. Qh8+ Ke7 33. Rxf7+ Kxf7 34. Qh7+ Ke6 35. Qxc7 a5 white has a Q + 2 passers vs. black's rook pair. This should be much better for white.

click for larger view

I decided to load this position into stockfish. After running almost half hour the eval was..

33/66 27:15 771,369k 472k +1.72 38.c4 bxc3 39.Qxc3 Rh8 40.Qb3+ Ke7 41.Qb7+ Ke6 42.Qd5+ Ke7 43.b3 Rac8 44.Qd2 Kd7 45.Qg5 Kc6 46.Qe3 Kd7 47.h3 Rc5 48.Qf2 Ke7 49.Qg3 Rcc8 50.Kh2 Rb8 51.Qc3 Rb4 52.Qc7+ Ke6 53.Qg7 Ra8 54.Qg6+ Ke7 55.Qh7+ Ke6 56.h4 a4 57.Qf5+ Ke7 58.h5 axb3 59.axb3 Rxb3 60.Qg5+ Kd7 61.h6 Rbb8

I'll let it run a bit more but either way this should be winning for white. The bottom line is...
< 27. Bxe5+ and 27. Bf6+ are the two winning lines > and 27.Bf8+ gives black drawing chances.

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