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Leonid Stein vs Ervin Haag
Tallinn (1969), rd 12, Mar-09
Caro-Kann Defense: Breyer Variation. Stein Attack (B10)  ·  1-0

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Nov-02-06  syracrophy: <chessmoron: Anyone has analysis for 26. Bxe7. I think White should play this move rather than Nxb5.>

26.Bxe7 Rxe7 and now the ♖ of a4 protects the ♙ of c4

Nov-02-06  chessmoron: Nevermind. I got it now.

Nov-02-06  think: This seemed tough for a Wednesday... There aren't any really concrete variations.
Nov-02-06  dzechiel: Found it all up until 29 Bd6, I chose 29 Bxe7 (which allows 29...Qe6). <sigh> So close yet so far.
Nov-02-06  goldfarbdj: I looked for a long time at the N sac on b5, but I didn't find the followup after 27 ... Kh8.
Nov-02-06  percyblakeney: I had <26.Nxb5 Nxb5 27.Qxc4+ Kh8 28.Qb3> followed by Bxe7 and white is two pawns up, didn't see the 28. Qf7 line.
Nov-02-06  percyblakeney: On 26. ... Qxb5 I had nothing better than 27. Bxe7 and hoping it would be enough, which seems to be far from certain. Something like <26.Nxb5 Qxb5 27.Bxe7 Qa6 28.Rd7 Rxa2 29.Qf1> might end up with white winning even if it doesn't look like the final position of a puzzle just yet...
Nov-02-06  Confuse: <think> surprise! its thursday : )
Nov-02-06
Premium Chessgames Member
  al wazir: I had 26. Nxb5 Nxb5 27. Qxc4+ Kh8 28. Qb3. If 28...Ra6/Ra7/Ra8, then 29. Bxe7 seems to win a piece, and white is two ♙s up.

After 26. Nxb5 Qxb5 27. Bxe7, black can move his ♕ to a5, a6, c6, e5, g5, or h5. That's too many possibilities. White is up a ♙ and has good prospects of getting control of the seventh rank, but that's all.

Nov-02-06  ForeverYoung: My choice was 26 Bxe7 Rxe7 27 Qc2 Ra6 28 Nxb5 Nxb5 29 Qxc4+
Nov-02-06  eblunt: Actually more or less got it right for once, up to 28 .... Nc7, which I thought would be a Q move instead. I could see that 27 Qf7 poses lots of problems.
Nov-02-06  eaglewing: <Forever Young 26 Bxe7 Rxe7 27 Qc2 Ra6> Instead of Ra6, Qa6 seems to counter your threat sufficiently.
Nov-02-06  MaxxLange: did not see Qf7...I was pretty sure that Nxb5 followed by the check was the right idea, but no cigar for me
Nov-02-06  greensfield: I saw 26. Nxb5 revealing a discovered attack on the Queen after 26...Qxb5 27. Bxe7 thus ending a pawn up. Is there anything else?
Nov-02-06  Thrajin: I got the puzzle legitimately, after about 5 minutes of hard thinking. Of course, Nxb5 was easy to find mostly because I saw that white was Leonid Stein, and I would have been surprised if a puzzle involving a player like him didn't involve a sac!
Nov-02-06  Eurotrash: This week is the best I've done so far, got em all monday through thursday. But it will be tougher tomorrow I imagine.
Nov-02-06  TrueBlue: after QxB5 is not so clear cut.
e.g., Bxe7, Qa6. White has a pawn, but nothing more out of the combination I think
Nov-02-06  mqhelisi: Question how about 27.Qc2 that's what i saw with the intention of regainig b5 while threatening a check on c4 also
Nov-02-06  babakova: I found it... I made up my mind when I saw there was no defense to 28.Qf7!

As for 26...Qxb5 27.Bxe7 Qa6 here I like 28.Rd6 and after the queen moves 29.Bxf6 wins another pawn and opens up the position for the g2-bishop. The c3 pawn will prove difficult to defend also.

Nov-02-06  zb2cr: Saw the main line. If 26. ... Qxb5; 27. Bxe7, Qa6 what happens after White plays 28. Rd7?
Nov-02-06  Fisheremon: <greensfield: I saw 26. Nxb5 revealing a discovered attack on the Queen after 26...Qxb5 27. Bxe7 thus ending a pawn up. Is there anything else?> White still has a strong initiative, mostly due to occupation of 7th hotizontal, and many variations lead to fierce attack even after exchanging Queens, e.g. 26..Qxb5 27. Bxe7 Qa6 28. Rd7 Rxa2 29. Qg4 Qe6 30. Qxe6 Nxe6 31. e5 fxe5 32. Bd5 Ra6 33. Bxc4 Rc6 34. Bd5 Ra6 35. Bd6 Bf8 36. Rb8 Rxb8 37. Bxe6+ Kh8 38. Bxe5+ Bg7 39. Bxg7#
Nov-02-06
Premium Chessgames Member
  kevin86: I missed this one entirely. White removed (or will remove the guard) twice here. The p at b5 guarded the pawn at c4 and the knight defended the rook at e8. The queen is attacked and black must abandon the knight at c7---then the rook is in danger,etc
Nov-02-06  YouRang: <dzechiel><<sigh> So close yet so far.> Yeah. That's why I didn't even waste time getting close. :-|
Nov-02-06  MyCatPlaysChess: This might be one of those problems that CG throws at us that doesn't have a correct answer when analyzed properly. Qf7 is the proper continuation if black retakes on b5 with the knight, but I don't see anything after Qxb5. The line that <Fisheremon> gives has black trading queens on move 29... which he certainly doesn't have to! 29... Rc8 and Nb5 look playable, and even though his king's position is loose, black's compensation of a passed c pawn will make things interesting for white.
Nov-02-06  babakova: <The line that <Fisheremon> gives has black trading queens on move 29... which he certainly doesn't have to! 29... Rc8 and Nb5 look playable,> If 29...Rc8 white has 30.Rd6 Qa8 31.e5 easily winning or 30...Ra1 31.Rxa6 Rxa1 32.Bf1 with another simple win in the making. 28.Rd7 seems much better than the crappy 28.Rd6 that I gave earlier.
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