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Andras Adorjan vs Predrag Ostojic
Rubinstein Memorial 8th (1970), Polanica-Zdroj POL, rd 5, Aug-??
Sicilian Defense: Scheveningen Variation. Keres Attack (B81)  ·  1-0
ANALYSIS [x]

FEN COPIED

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sac: 32.Bxg7+ PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Sep-15-05  cheski: 29...Kh8? This move made me uncomfortable for Black. Why did he play it? Because there was little else?

It seems a little dangerous for the King to be so hemmed in with nowhere to go except into the arms of the enemy. I would have preferred to temporize with a Rook move.

Sep-15-05  Koster: He played Kh8 because there was little else legal that didn't lose material. But maybe Rc4 was better. He can answer bishop moves with Qe6 breaking the pin and keeping the K off the h file. The real mistake was probably d5, opening a diagonal he should have kept closed.
Sep-15-05  ckr: <eaglewing Is maybe 31. ... f5 an improvement for the Black defense?>

I think so, it could give black drawing possibilities.

Sep-15-05  ckr: <drawing possibilities> but white could easily avoid that line
Sep-15-05  Fricasso: After 31... gxh6 32.g7+ kh7, not 33.gxf8=Q, but 33.g8Q+ Rxg8 34.Qf7+ Rg7 35.Qxg7#
Sep-15-05  DanRoss53: An even quicker path to mate would be 35. ♖h1+! ♔g6 (or 35... ♔xg7 36. ♖dg1+ ♔f8 37. ♖xg8+ ♔e7 38. ♖h7#) 36. ♖dg1+ ♔f5 37. ♖h5+ ♔f4 38. ♖g4#
Sep-15-05
Premium Chessgames Member
  The Diamond: Twenty-fourth.
Sep-15-05  chessic eric: <<DanRoss53> An even quicker path to mate would be 35.Rh1+!...> I don't understand, quicker than what? After 35.Rg2 isn't 36.Rh1#? Your line is more forcing, beginning with check at move 35, thereby preventing a black queen sac on c2 to prolong the game. But unless black starts throwing away material to stay at the board, 34.g7! (taking away the black king's flight square), 35.Rg2 and 36.Rh1 seem quickest, though admittedly a bit less forcing.
Sep-15-05  Marvol: <Fricasso: After 31... gxh6 32.g7+ kh7, not 33.gxf8=Q, but 33.g8Q+ Rxg8 34.Qf7+ Rg7 35.Qxg7#>

I got that line (but not the real solution to the puzzle), so I am proud to allow black to prolong his suffering for a few moves more with 34...Kh8, which however doesn't change his fate after 35. Rg6 (threatening Rxh6#) Rxg6 36. hxg6 followed by Qh7#.

Oh well if I can't calculate the solution I just calculate something, at least... :-S

(I just hope nobody notices that after 35. Rg6 black is likely not to answer 35...Rxg6, but instead ...Qxc2# :-O)

Sep-15-05  eaglewing: <shortsight> Your line with 36.♖xe7 is convincing with the threats ♖e6+ and ♖g1+/♕e3+/♕f2
Sep-15-05
Premium Chessgames Member
  YouRang: Rats - missed it. I saw the the first 3 moves coming, but just didn't look far enough to see the threat from the other rook. Then I went off looking for smother mate opportunities with the knight, but (of course) to no avail.
Sep-15-05
Premium Chessgames Member
  YouRang: <cheski,Koster> <29...Kh8? This move made me uncomfortable for Black. Why did he play it?> The black king has to get out of check. The only other feasable move would be to block with 29...Rc4. But I would be uncomfortable with my rook pinned with a opposing knight nearby that could attack it, winning the exchange.
Sep-15-05  atrifix: I "saw" this one in about a second or two, perhaps because I saw it in a puzzle book before, and convinced myself it was winning. Every time I have an epiphany like this I feel like a GM, but then every time I can't solve a simple combination like Larsen's yesterday I feel like a patzer.

Let's look at the defensive tries 31... Rg8 and 31... f5: 31... Rg8 doesn't help because of 32. Bxg7+. Now 32... Kxg7 gets mated in 2, so 32... Rxg7 33. h6 Rgg8 34. Rg2 and Black can resign. (e.g., 34... f5 35. g7+ Kh7 36. Qf7 Qxh6+ 37. Kb1 Rxg7 38. Rxg7+ Qxg7 39. Rh1+ mates)

31... f5 32. Bxg7+ Kxg7 33. h6+ Kxh6 34. Rh1+ Kg7 (Kxg6 gets mated) 35. Rh7+ Kxg6 36. Rxe7 fxe4 37. Re6+ is good enough to win. If 36... Qc4 then 37. Rg1+ Kh6 38. Qe3+ f4 39. Rh1+ Kg6 40. Qg1+ mates.

And I agree--the rest of the game is actually much more masterful than the final combination, although Ostojic could have made things very difficult if he had found 20... e5! (21. Bxd7 exd4 22. Bxc8 dxc3 and ...Qxc8) 21. Nd5 Bxg5 22. Nxc7 Bxd2+ 23. Rxd2 Rxc7 24. Bxd7 exd4, when Black should draw.

Sep-15-05  Kyuu: Very timid play on Black's part.
Sep-15-05
Premium Chessgames Member
  kevin86: After an aggressive attack-white's last move was a quiet clearence move for the queen rook. It took a bishop sac and two powerful pawns to get the ball rolling.
Sep-15-05  Averageguy: I saw everything to 32.Bxg7+ but I gave up on it because I missed the crucial move 33.h6+!
Sep-15-05  snowie1: Yes, one is left to conclude as one may, the excuse for a Master in this position to move 31...Bxb4. One can joke about it, as I choose to do, or one can strain the brain to connect it to some superior position beginning with that move. It didn't happen though.
Sep-15-05  pwolff: I think 30...Qf5 may be an improvement for black. Then 31.Bxh6 Rg8 32.Bxg7 Rxg7 33.h6 and 33...Rxg6 because now the rook is defended by the queen
Sep-15-05  suenteus po 147: These "White to Play" puzzles have been trickier, but it has helped me see more than "Play to Win" Puzzles have recently. I definitely saw 31.Bxh6, and while I did not see the follow up, I felt glad that at least I was seeing good moves again :)
Sep-15-05  atrifix: <pwolff> 30... Qf5 does save Black from the Bxh6 and Bxg7+ combination, but it can't hope to save Black's hopeless game after 31. Bxh6 Rg8 32. Be3 followed by h6 and then Rh1 and hxg7+ in some order.
Sep-15-05  erikcu: <Suenteus po 147-- I definitely saw 31.Bxh6, and while I did not see the follow up, I felt glad that at least I was seeing good moves again :)>

As it gets later in the week, it gets that way for me too. I often will click on the game and try and play it out move by move, if I get tired of trying to calculate all the possibilities.

Sep-15-05  black knight c6: <eaglewing> and <shortsight>, the whole point is not white making captures with gxf8, but the same idea as in the game, double rook mate!!!! white would be silly not to go for the mate!

after <eaglewing>s line of 34. ... exf4, Rg2 AND NOW WHAT WILL YOU DO? (Rh1 too come with devastation) the point of g7 is too block the kings escape!

Sep-15-05  black knight c6: 31. ... Rg8 32. Bxg7+ Rxg7 33. h6 Rg8 34. g7+ Kh7 35. Qf7 f5 36. Qxf5+ Qg6 37. Qxg6++ Is a very cool line!!!

31. ... f5 32. Bxg7 Kxg7 33. h6+ Kxh6 34. g7 Qxc2+ (Kh5 hoping for Bh4 saving the day is stopped by Qf7+!) 35. Qxc2 Rxc2+ 36.Kxc2 Rg7 37. Rg2 Kh5 38. Rh1+ Bh4 38. Nf6+ and wins.

It is interesting to note that without the queen swap on c2, the black queen would be able to stop the knight check on f6! but without that, the white queen would come in on c7+! and win, so its a catch 22 situation.

any comments on my analysis???? please

Sep-16-05  shortsight: <black knight c6> Look again boy, never in my analysis that the move gxf8 happened. There's not even a pawn at g7 in my line.
Sep-16-05  eaglewing: <black knight c6> I already agreed, that the line of <shortsight> with 34. ♖h1+/♖h7+/♖x♗e7 crushes 31. ... f5. Either it mates or it will be hopeless with one rook down and queens exchanged.

In my first given line with 34. g7 fx♘e4 you might ofcourse still find a forced win, too, but you should show that "just" 35.♖g2 (with or without taking on f8) cannot be evaded with 35. ... ♗g5+.

If 36. ♖xg5 ♔xg5 follow ups might be 37. ♕e3+ ♖f4 or 37. Tg1+ ♔f6 and you still need to "mate".

Remark: I would not like to try 34. g7 ♔h5, but 35. ♕f7+ ♖xf7 seems no option for White.

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