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Ingi Randver Johannsson vs Nikolay N Minev
Halle Zonal (1963), Halle GDR, Jul-??
Zukertort Opening: Symmetrical Variation (A04)  ·  1-0
ANALYSIS [x]

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Kibitzer's Corner
Mar-05-05  rochade18: Wow, that's a quite deep combination beginning with Nf7+!
Mar-05-05  hintza: Black could have avoided the combination with, for example, 23...Nxe5. If White recaptures with the bishop he gets a fine position, but Black is not immediately lost as in the game. One line is 23...Nxe5 24.Bxe5 f4 25.Bd5+ Kh8 26.Bxf4 and White is much better.

Recapturing with the rook instead gives Black much better chances of survival: 23...Nxe5 24.Rxe5 f4 25.Bxb7 Bxd3 26.Qxc3 Ba5 27.Rxe8 Bxc3 28.Rxd8 Rxd8 29.Bxc3 Bxb1 30.Bxa6 is quite even, although there may be some improvements for White in this line.

Feb-13-07
Premium Chessgames Member
  beenthere240: The position after 26....Bxd3 is in a puzzle book I own (It's your move, by Teschner). Unfortunately, the position in the book omits white's bishop on f7, making the problem much more difficult!
Feb-13-07
Premium Chessgames Member
  beenthere240: 29....Kh8 loses after 30. Bd4+ Kh7 31 Be4+ when white is up a rook.
Aug-17-13
Premium Chessgames Member
  agb2002: The material is identical.

Black threatens 24... Nxe5, weakening d3.

The first idea that comes to mind is 24.Bd5+ Kh8 25.Nf7+ Rxf7 26.Bxf7

A) 26... Nd6 27.Rbe1

A.1) 27... Nxf7 28.Re8+ Bg8 29.Rxd8 + -.

A.2) 27... Nd4 28.Bxd4 cxd4 29.Re8+ Nxe8 30.Rxe8+ Qxe8 31.Bxe8 + -.

B) 26... Nf6 27.Bxf6 Qxf6 28.Re8+ Bg8 29.Rxg8+ Kh7 30.d4+ g6 31.Rxg6 Qxf7 32.Rxc6+ and 33.Rcxb6 + -.

C) 26... Nc7 27.Rbe1

C.1) 27... Qxd3 28.Re8+ Bg8 29.Rxg8+ Kh7 30.Qxd3+, etc.

C.2) 27... Bxd3 28.Qc3 Qd4 (28... Nd4 29.Qxd3) 29.Re8+ Nxe8 30.Rxe8+ Kh7 31.Bg8+ Kg6 (31... Kh8 32.Bd5+ Kh7 33.Qc1 traps the black queen) 32.Re6+ Kf(h)5 (32... Kg5 33.Nf3+ and 34.Nxd4) 33.g4+ followed by 34.Nf3+ and 35.Nxd4, etc.

C.3) 27... Nd4 28.Bxd4 as in A.2.

C.4) 27... Ra8 28.Re8+ Nxe8 29.Rxe8+ Qxe8 30.Bxe8 Rxe8 31.gxf4 and White should win.

Aug-17-13
Premium Chessgames Member
  An Englishman: Good Evening: White's position looks so bad that at first I thought the assignment was Black To Move. You really have to see at least the first four moves to claim credit, and I was Not. Even. Close.
Aug-17-13
Premium Chessgames Member
  al wazir: The first three moves are obvious and don't cost white any material (after 26...Bxd3 he can always fall back on 27. Rxe8+ Qxe8 28. Bxe8 Bxc2 29. Rc1). I didn't see that 27. Qxd3 works before peeking and I don't think I would have seen it OTB even after 26...Bxd3.
Aug-17-13  morfishine: Looks like Ivanchuk vs Ivanchuk

A Unique position noted for Black's passive DSB & QR. In any case, I almost got the whole line:

24.Bd5+ Kh8 25.Nf7+ Rxf7 26.Bxf7 Bxd3 27.Qxd3 Qxd3 28.Rxe8+ Kh7 29.Bg8+ Kg6 30.Re6+ Kf5 31.g4+ Kg5 32.Ne4+ Kh4 33.Bxg7


click for larger view

**********
PM: I didn't see 33...h5 in my line

**********

Aug-17-13  Nick46: <al wazir: The first three moves are obvious..> Those were the ones I got, which is good going for me this far into the week.
Aug-17-13  Nick46: Will tomorrow be the third Nikolay in a row bombing out with black?
Aug-17-13  paramount: very nice puzzle. very deep!!
Aug-17-13
Premium Chessgames Member
  kevin86: Black's king is chased into the open after the queen is sac-ed.The king is left alone...to be mated.
Aug-17-13  cyclon: In Today's Puzzle my solution is ; 24. Bd5+ Kh8 25. Nf7+ Rxf7 26. Bxf7 and NOW ;

1. -26. -Bxd3 27. Qxd3 Qxd3 ( practically forced ) 28. Rxe8+ Kh7 29. Bg8+ Kg6 ( or 29. -Kh8 30. Bd5+ Kh7 31. Be4+ wins a whole Rook ) 30. Re6+ Kh5 ( or 30. -Kf5 31. Bh7+ Kxe6 32. Bxd3 wins a piece and 30. -Kg5 31. Ne4+ Black has to play 31. -Qxe4 32. Rxe4 White's Rook ahead ) 31. Bf7+ g6 32. Bxg6+ Qxg6 ( 32. -Kg5 33. Ne4+ similarly as in previous ) 33. g4+ Kg5 34. h4+ wins.

2. -26. -Nc7 White can play simply f.e. 27. Ne4 being healthy exchange up.

3. -26. -Nd6 27. Rae1 and White's intending 28. Re8+ winning material and attacking. -27. -Nd4 28. Bxd4 cxd4 29. Re8+ wins, or -27. -Nxf7 28. Re8+ and move like -27. -Qg5 gets 28. Re8+ Nxe8 29. Rxe8+ Bg8 30. Rxg8+ Kh7 31. d4+ wins outright.

4. -26. - Ne7 27. Rae1 ( I prefer this move over 27. Qc3 which nevertheless seems plausible ) -27. -Bxd3 ( what else? ) 28. Rxe7 Nf6 ( 28. -Bxc2 29. Rxe8+ and 28. -Qxe7 29. Rxe7 both wins a piece for White ) 29. Qc3 and if Black plays f.e. -29. -Ba5, comes 30. Re8+ and either -30. -Nxe8 31. Rxe8+ mates, or -30. -Kh7 31. Rxd8 winning too much material.

5. other inferior lines are -26. -Nf6 27. Bxf6 Bxd3 28. Bxd8 winning a Rook, or -26. -Nd4 simply 27. Bxd4 threatening again 28. Rxe8+.

These are some illustrations why it seems to me that Black gets a losing game after 24. Bd5+ Kh8 25. Nf7+ Rxf7 26. Bxf7 by force - but, there might be something else....

Black's problems were caused mainly in disposition of his Queen-side pieces. Let's see.

Aug-17-13
Premium Chessgames Member
  Jimfromprovidence: <agb2002> <24.Bd5+ Kh8 25.Nf7+ Rxf7 26.Bxf7 Nc7 27.Rbe1>

I could not find the answer to 26...Nc7. 27 Rbe1 is very nice.


click for larger view

Notwithstanding you winning line, at first 27...Bxd3 looks good here for black, but white just avoids it with 28 Qc3.


click for larger view

Aug-17-13
Premium Chessgames Member
  patzer2: I missed today's puzzle solution 24. Bd5+!! (going instead for 24. Be4 which only leads to equality with strong play by Black) because I saw 26...Bxd3 leads to only a level position after 27. Rxf8+ Qxf8 28. Qxd3 =.

What I missed was 26...Bxd3 27. Qxd3!! Qxd3 28. Rxe8+ Kh7 29. Bg8+ Kg6 30. Re6+ gives White a winning pursuit (i.e. king hunt) combination.

In the final position, Black has nothing better than 31...Qxe4 32. Rxe4, leaving White a piece up with an easy win.

If 31...Kf5, then 32. g4#.

If 31...Kh4, then 32. Bf7+ g6 33. Bxg6#.

P.S.: It's not clearly decisive like 24. Bd5+!!, but the simple idea 24. Bxc6!? bxc6 25. g5! leaves Black a weak pawn structure and gives White a solid advantage with winning chances.

Aug-17-13
Premium Chessgames Member
  patzer2: <morfishine> After 30...Kf5, your 31. g4+ idea with accurate calculation leads to a winning, but somewhat difficult, King hunt mating attack.

However, after 30...Kf5 simply 31. Bh7+!
(position below)


click for larger view

skewers the White King and leaves White a piece up and with an easy win after 31...Kxe6 32. Bxd3 .

P.S.: I like 30...Kf5 31. Bh7+, not because it's the strongest winning line, but because it shortens the amount of calculation required in a long and difficult combination, especially early on after 24. Bd5+!!.

Aug-17-13
Premium Chessgames Member
  agb2002: <Jimfromprovidence: ...

Notwithstanding you winning line, at first 27...Bxd3 looks good here for black, but white just avoids it with 28 Qc3.>

What I don't understand is why I considered Bxd3 at move 27th, after 26... Nc7, but I overlooked it at move 26th.

Aug-17-13
Premium Chessgames Member
  Jimfromprovidence: <agb2002> <What I don't understand is why I considered Bxd3 at move 27th, after 26... Nc7, but I overlooked it at move 26th.>

I overlooked the fact that you had already analyzed the 26...Nc7 27 Rbe1 line as well as the 26...Nc7 27 Rbe1 Ra8 one.

I noticed that that there is no win after 26...Nc7 27 Rbe1 28 Qxd3? below, as compared to the text.


click for larger view

This is the text position after 27 Qxd3.


click for larger view

White will have had to give up one of his rooks in the alternative position in the first diagram to get to the same point as 31 Ne4+ in the text, so black can afford to give up his queen for the knight and remain more or less even.

Aug-17-13  morfishine: <patzer2> Thanks for looking! This is a good example of the difficulties in visualization: After 31.Bh7+, all I saw was my rook was now not protected; I didn't see the Queen skewer at all!

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