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Andras Adorjan vs Heinz Wirthensohn
Biel (1983), Biel SUI, rd 2, Jul-??
English Opening: King's English. Four Knights Variation Fianchetto Lines (A29)  ·  1-0


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sac: 27.Rxh7 PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 3 OF 3 ·  Later Kibitzing>
Premium Chessgames Member
  FSR: <Prosperus: @FSR "Per Houdini 3, White is winning after 28.Rh8+ Kg7" 28. ... Kg7 is an impossible move for the sake of check.>

I was analyzing what would have happened if Black had captured on d4 (27...Nxd4) instead of playing 27...Bxg2. Since Black has captured the bishop on d4, Ke7 is now a legal response to 28.Rh8+.

I do see now that my comment was flawed for an entirely different reason: <Phony Benoni> asked what would have happened if Black had played 28...Rxd4, and I addressed what would have happened had Black played 28...Nxd4. D'oh!

Premium Chessgames Member
  FSR: <Phony Benoni: Amusing. But What if Black had played 27...Rxd4 instead?>

I initially managed to answer the <wrong> question, analyzing how White would have responded to 27...Nxd4. As <goodevans> said, the correct response to 27...Rxd4 is 28.Qc1! Then Black's bishop is attacked, and 28...Bxh3 is met by 29.Qg5! when mate is imminent.

Premium Chessgames Member
  FSR: <<<mertangili: <FSR>I guess that your analysis answers what happens in case of 27...Nxd4 but not 27...Rxd4>

Quite right. Silly me.>

(in which case I have failed to find a winning line for white)? Or am I missing something?>

As I said - long after your post (and as <goodevans> said before I did) - 28.Qc1! is very strong. Then Black's bishop is hanging, and 28...Bxg2 is met by 29.Qg5! (kind of an echo of 28.Bf6! in the game; each cuts off the flight square on e7) and mate impends. (And don't feel bad for missing it - I was consulting Houdini 3 here, which makes it easy to be a great tactician.)

Premium Chessgames Member
  chrisowen: A calm find monster potato in see a bid for freedom,

at stuffing 28.bf6 in croak begotten rook crab over bat im likening 28...ne7 29.rh8+ in heffalump hook now ledge in ghostings 29.ng8 i net have in manage off 30.Bxd8 re you white has these in exchange rook evermore three pawns ahead no need to get going hind mind along the tracks of instead 27...Bxg2 glib in faffing 27...Rxd4 around in together 28.Qc1 see bull rushing read for rookxe2 one each lowly in different 29.rh8+ king up ply it dog in boltening:

29.Ke7 30.Bxh3 Rxe1+ whence language see a 31.qxe1+ in het upper ko in us wary it chin-down two pawns enough for the win queen angled off-side an strut in thin picking e7 out in the open success having clean up tie a knightg8 in victory it is you in lax h3 reimburse again wave in effect read rut in wheel it horde in good game thod in f6 etc finger true deed in bed h8+ and inch a look at he in tender v i shred in low call game torque one for porch you pine for d4 rook or nd4 ergo c1 puts the breaks on proceeding servant came it her in c1 or g5 i seel open in shut aint it anomally find, light feed pitch in bishop fingered king.

Premium Chessgames Member
  Castleinthesky: Never on a Monday, but missed a Tuesday
Premium Chessgames Member
  morfishine: <Castleinthesky> On your comment <Never on a Monday, but missed a Tuesday> If its any consolation, I spent over an hour on this thing before seeing what was directly in front of my nose the whole time...I don't really feel like I 'got it' just because of that :)
Feb-05-13  mistreaver: Tuesday.White to play. Easy.28.?
I don't see a clear route.
Let's see what happens after the most obvious move:
A) 28 Rh8+ Ke7
29 Bc5+ Kf6
and i don't know how to proceed from here.
B) 28 Bc5+ Kg8
also doesn't bring much joy.
After looking at 10 mins now i finally found:
C) 28 Bf6 (and there is no defence against the threat of Rh8 mate) Time to check.
wow this was not at all that easy. Usual tuesdays are solved in less then 5 minutes. Anyway, 2/2 this week.
Premium Chessgames Member
  sandtime: A Tuesday Toughener
Premium Chessgames Member
  kevin86: easy,easy,easy. White only had to stop the king's escape-the queen IS expendable!
Feb-05-13  BOSTER: "The behavior of fundamental particles is essentially random", but this doesn't mean that black rook a8 had to follow this principle playing Ra8-Rb8-Ra8-Rc8-Rd8.

Playing vs two bishops is almost good strategy to trade one of them to decrease the power of two bishops. So in the pos. black to play 25... they should play Nxd5.

click for larger view

and white has only one pawn extra, but this is not a win according to modern theory. It looks like black forgot that in relative pin the pinned piece has right to move.

Feb-05-13  mihai: I saw 28. Bf6, but I dismissed it, because of a possible ...Ne7. Black is not sitting pretty after this, but the immediate mate at h8 is at least delayed. Am I missing something here?
Feb-05-13  MountainMatt: That was a very hard "easy" move to find. So far, it's been a tough day in every way!
Feb-05-13  chesscheater: Glad I wasn't alone in missing this. I was trying to force the Rh8 line to no avail.
Feb-05-13  HowDoesTheHorsieMove: Good morning!

Man, last night I was really feeling good about finding Bf6 until I found the response Ne7. There is then no obvious mate. Just after I turned the monitor off for the night I realized that after checking with the rook and the knight response I could then take the black rook! Easy peasy (not).

Premium Chessgames Member
  gawain: I solved this quickly, so maybe it deserved to be called "easy." However for a Tuesday puzzle, the winning move seemed unusually quiet.
Premium Chessgames Member
  Castleinthesky: <morfishine> I give you double credit, as I would still be staring at my computer, in need of a shave, and still without a correct solution.
Feb-05-13  Patriot: Black is currently up a piece for three pawns.

The first move I see is 28.Bf6. 28...Ne7 looks absolutely forced. 29.Rh8+ Ng8 30.Bxd8 wins.

Premium Chessgames Member
  Diademas: Nice puzle.
Bf6 is absolutely killing. A fact I did not see, even after checking out treads to move 41(!). Somtimes the easiest is the best.
Feb-05-13  EXIDE: I do not see an easy win after 30.Bd8,Qc6. In any case I missed this one completely.
Feb-05-13  talsqueen: This is fabulous. To console myself I will convince myself that had I sat on this longer, I would have seen it. :(
Premium Chessgames Member
  patzer2: The tempo-gaining deflection <24. Rc5!> (i.e. gains a tempo by attacking the Queen) sets up today's (Tuesday puzzle) solution 28. Bf6! Here's my move-by-move look verified with Fritz 12:

<24. Rc5! Qb6>

The alternative 24... Qb3 25. Qxb3 axb3 26. Bc3 to gives Black practical chances of surving, but probably loses to strong endgame play.

<25. Rg5>

White gains a tempo to bounce to the Kingside via 24. Rc5! to 25. Rg5 to with a strong attack. From this perspective 24. Rc5! is a bargain, giving White two moves for the price of one.


This is a desperate try to complicate in a lost position. But who can blame Black for trying to avoid a bad ending? The alternative 25... g6 26. Bf6! 25...Bf5 27. Bxd8 Rxd8 28. Bd5! Be4 29. f3! h6 30. fxe4 hxg5 31. Qc1 Qb6+ 32. Kg2 Kg7 33. Qxg5 to appears to lose for Black in the endgame.

<26. Rxg7+! Kh8>

If 26...Kh8, then 27. Qc2 leads to mate.

<27. Rxh7!>

Also winning is 27. Qd2! Rxd4 28. Qg5 , when play might continue 28...Ne7 29. Rxh7 Qg6 30. Rh8+ Ng8 31. Qc5+ Qd6 32. Qxd6 Rxd6 33. Rxh3 , but it seems a bit overly complicated (i.e. more of a computer move than a human choice).

<...27. Bxg2>

Black is lost and still trying to complicate. The alternatives 27... Rxd4 28. Qc1 Rxe2 29. Rh8+ Ke7 30. Bxh3 and 27... Nxd4 28. Rh8+! Kg7 29. Rxe8 Nf3+ 30. Bxf3 Rxd1 31. Rxd1 are both losing tries.

<28. Bf6!>

Now Black loses after 28... Ne7 (28...Rxd1 29. Rh8#) 29. Rh8+ Ng8 30. Bxd8 .

Feb-06-13  LIFE Master AJ: 28.Bf6! (A standard pattern.)

<patzer2> Thank you for taking the time to analyze the last few moves.

Feb-06-13  Nullifidian: 28. ♗f6 offers the queen, but it's mate in 1 if Black takes. In fact, the only move that can prolong the game, it seems like, is 28... ♘e7, to interpose the knight between the king and the rook on g8.

Play continues:
29. ♖h8+ ♘g8
30. ♗xd8

This not only wins the rook, but threatens a rook exchange on e8 followed by mate. So Black's best response is 30... ♕c6, and now 31. ♙f3 gains the bishop too.

Premium Chessgames Member
  patzer2: <LIFE Master AJ> You're welcome. Hope it was useful.

28.Bf6! is "a standard pattern," but I confess I missed it (going for the harder winning try 28. Rh8+ when the simpler 28. Bf6! does the trick without much calculation).

So I decided to look a little deeper to understand not only what I missed, but also to see how White got Black into this predicament in the first place.

Feb-06-13  LIFE Master AJ: <patzer2> Thanks again, (and your welcome); that was outstanding.

See for many of the standard mates, I review these from time to time.

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