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Dec1208   crwynn: sorry my mistake, 58.Be6 Kc7 

Dec1208   urnebes: Is 14.b4 and 15.Ne2 still opening theory? 

Dec1208   zooter: <patzer2:> so, 56.d7+ Kd8 57.Kf4 is second best move? 

Dec1208   Zzyw: My try was 1.Kf4! followed by 2.d7+?, missed 1....Rc5 and black gets white's last pawn at the end. 2.Be6! is essential. 

Dec1208   DoubleCheck: I had three reasonable ideas, not solutions, just ideas; /A\
56. Kf4 Re1
(threatening possibly ...Rf1+ with ...Rxf7)
57. Kg5 Rd8
58. Rf6 Rg1+
59. Kh4 Rg7 (waiting move)
60. Bd5 Rb8??
61. Bc6+! Kd8
62. Rf8+ mate
Variation in /A\
60... Rc8
61. Be6 Rc6/Rb8< both questionable
62. Bg4(waiting move)
Unclear...
/B\
56. d7+ Kd8
57. Rf8+ Kxd7
58. Rxb8 Re3+
59. Kg4 Rxc3
60. Rb7+ Kc6
61. Rxh7
Draw
/C\
56. Kf4 Re1
57. d7+ Kd8
58. Rf8+ Kxd7
59. Rxb8 Rf1+
60. Kg3 Rg1+
61. Kh2 Rg5
62. Rb7+ Kc6
63. Rxh7  Decisive
Unclear...
Difficult endgame study indeed 

Dec1208
  chrisowen: I found 56.Kf4 but was unceratin of black's reply. It isnt easy finishing these exchange sac endgames, certainly white has an advantage by move 55 but proving it is another matter. Looks like the e5 pawn was poisoned. 

Dec1208
  agb2002: White is an exchange down but the activity of his pieces seems to be enough compensation. The immediate 56.d7+ Kd8 57.Rf8+ Kxd7 58.Rxb8 fails because of 58... Re3+ followed by 59... Rxb3. This suggests 56.Kf4: A) 56... Re1 57.d7+ Kd8 58.Rf8+ Kxd7 59.Rxb8 and White has a bishop for a pawn. B) 56... Rh5 57.Be6 (controlling d7 and defending h3) B.1) 57... Rd8 58.d7+ Rxd7 59.Rxd7, like A).
B.2) 57... b4 58.d7+ Kd8 59.Rf8+ Kc7 60.Rxb8 winning. B.3) 57... Rh6 58.d7+ Kd8 59.Rf8+ Kc7 60.Rxb8 winning. B.4) 57... Rh4+ 58.Ke5 (to avoid 58... Rd4) Rh5+ 59.Kf6 Rh6+ 60.Kf5 Rh5+ 61.Kg4 B.4.a) 61... Re5 62.d7+, like B.3).
B.4.b) 61... Rd8 62.Rxh5 Rxd6 63.Ba2 Rd2 (63... Ra6 64.Rf2) 64.Ra7, like A). C) 56... Rc5 57.Be6
C.1) 57... Rcc8 58.Rg7 threatening Rg8 mate.
C.2) 57... Rc6 58.d7+ Kd8 59.Rf8+ Kc7(e7) 60.Rxb8 Rd6 61.Rc8+(e8+) winning. I have the impression that I’m missing something but I’ll stop here. 

Dec1208   Alphastar: <patzer2> It's friday. Keep it real :) 

Dec1208   nuwanda:
interesting to know in connection with these type of ending is that while K + h(a)pawn + wrong colored bishop against K (in the right corner) is an wellknown easy draw, giving each side an additional rook leads to an relatively easy win for the stronger side. The point is that the weaker side cannot build up a blocade with the king in front of the pawn and that there are no (real) stalemate tricks 

Dec1208   RandomVisitor: After 34.e5:
click for larger view34...Nxe5! 35.dxe5 Rxd1+ 36.Bxd1 Rd8
Analysis by Rybka 3 : <20ply> 1. (2.08): 37.Bc2 Rd2 38.Be4 Rd1+ 39.Nf1 Ng5
2. (2.08): 37.Bb3 Rd3 38.Bc2 Rd2 39.Be4 Rd1+
3. (2.22): 37.Be2 b4 38.Bb6 Rc8 39.Be3 b3


Dec1208   zb2cr: Waaay too many lines for a strictly average player like me to analyze. White has 56. d7+, Kd8 and he can win Black's Rook on b8 with a skewerbut then Black (a) gets the dPawn and (b) threatens ... Re3+ getting White's Bishop. Then White would have to fight for a draw. This suggests White's first move56. Kf4. The Black Rook then has 3 choices: 56. ... Rh5, 56. ... Rc5, or stay on the efile. I like 56. ... Rc5. Now I saw 57. Be6, a preventative move taking any sting away from ... Rc3. Now White can push his Pawn, win Black's Rook, and still keep his own RP. But the endgame is far from overBlack has too many nasty traps for me to see through. 

Dec1208   RandomVisitor: After 27.f5:
click for larger view<27...exf5!> 28.exf5 Nd5 Analysis by Rybka 3 : <16ply> 1. (1.06): 29.fxg6 hxg6 30.Re1 Qf8 31.Ne4 Nb4
2. (1.08): 29.Qf3 N7f6 30.Ba4 Rf8 31.Bb3 Qd6


Dec1208   RandomVisitor: <urnebes: Is 14.b4 and 15.Ne2 still opening theory?>14.Bd2 is usually played here. 

Dec1208   njchess: I remembered this game from my endgame studies, so I knew the answer already. Great technique by Ljubojevic. Tough loss for Torre. 

Dec1208   DarthStapler: I got the first move 

Dec1208
  triangulation: I concentrated of Kf4 as d7+ works out to be a draw according to my calculations So, 56 Kf4 Re1 (....Rh5, 57 d7+ Kd8 58 Be6 ) 57 d7+ Kd8 58 Rxh7 (preventing Rf1 +) Re7 59 Rh8+ Kxd7 60 Rxb8 Kc6 and white should win. Time to check 

Dec1208
  whiteshark: The skewer trick after 56.Kf4 Re1 57.d7+ Kd8 58.Rf8+ Kxd7 59.Rxb8 

Dec1208   patzer2: <zooter: <patzer2:> so, 56.d7+ Kd8 57.Kf4 is second best move?> Well, I suppose that's one way to put it. By itself, 56. d7+?! is a second best but inferior move that risks throwing away the win and giving Black a draw. After 56. d7+?! Kd8, the reply 57. Kf4! is the best move under the circumstances to salvage a White advantage in a position that is then very difficult to win. P.S. "Second best" isn't always bad (especially in reference to chess moves), but I thought I'd share a few quotes anyway: Dale Earnhardt  "Second place is just the first loser." Vince Lombardi  "There is no room for second place. There is only one place in my game and that is first place." 

Dec1208
  johnlspouge: Friday (Difficult):
Ljubojevic vs E Torre, 1975 (56.?) White to play and win.
Material: B for R. The Black Ke8 has 1 legal move. The White Rf7 controls the 7th rank, squeezing the Black Ke8. The White Pd6 is a candidate for queening. It controls the light squares complementary to Bb3, creating some possibilities for backrank mates. The White Kg3 requires activation. Candidates (56.): d7+, Kf4
The following variation does not quite work:
56.d7+ Kd8 57.Rf8+ Kxd7 58.Rxb8 Re3+ forking Bb3 and Kg3 The variation suggests that White should remove his Kg3 from the 3rd rank to avoid …Re3+. Immediate interpolation of the threat 56.Kf4 is most forcing: 56.Kf4 (threatening 57.Kxe5)
<[Aware that without Ph3, the R+B vs. R endgame is a draw, I focused on the following variation]> (1) 56…Rh4 57.Kg4 Rh6 58.d7+ Kd8
59.Rf8+ Kxd7 [Kc7 60.Rxb8 Kxb8 61.d8=Q+] 60.Rxb8
White now captures Ph7, advances Ph3, and forces the Black R to sacrifice itself to prevent h8=Q. If White uncritically uses the idea in Variation (1) after 56…Rc5, however, Black has a trap: (2) 56…Rc5 57.d7+ Kd8 59.Rf8+ Kxd7 60.Rxb8 Rc3!
< <JG27Pyth> wrote: I think my variation is every bit as good as the text... > Sorry, <JG27Pyth>, White cannot hold both the Bb3 and Ph3, so Black draws. I would have fallen for the trap, too. 

Dec1208   patzer2: <RandomVisitor> After 34...Nxe5! 36. dxe5 Rxd1+ 37. Be3, how does Black secure a decisive advantage? From a practical perspective, Rybka's 2.08 assessment looks a bit too optimistic. 

Dec1208   JG27Pyth: Really liked your analysis today zooter  one thing to add: [after 56.Kf4 Rc5]
<The win is problematic for White after the premature 57. d7+ Kd8 58. Rf8+ Kxd7 59. Rxb8 Rc3 60. Bd1 Kc7 61. Rxb5 Rxh3 62. Bg4 Rc3 63. Rh5 > There are pitfalls for Black if he's inaccurate, but the tablebases give the position from 63.Rh5 in that line as drawn. 

Dec1208   Patriot: The immediate 56.d7+ Kd8 57.Rf8+ Kxd7 58.Rxb8 Re3+ 59.Kg4 Rxb3 does not work. That's when I noticed 56.Kf4. This is essentially a doubleattack, threatening the rook on e5 and also threatening a combination starting with d7+ winning the rook on b8 or promoting the pawn. I stopped there thinking "this must be the best move" because the rook is forced to move to c5, h5, e1, or e2 and the combination starting with d7+ is unstoppable. Hopefully after 56...Rc5 I would've found 57.Be6 but I'm not so sure. I could've easily fallen into the draw and played 57.d7+. 

Dec1208   Antonius Blok: Ok: 56.Kf4 to avoid Re3+ but after 56... RC5 can't we play directly : 57.d7+ Kd8 58.Rf8+ Kc7 59.Rxb8 ?
It's a zugzwang! 

Dec1208   patzer2: <JG27Pyth> Thanks for the table base analysis of 57. d7+ Kd8 58. Rf8+ Kxd7 59. Rxb8 Rc3 60. Bd1 Kc7 61. Rxb5 Rxh3 62. Bg4 Rc3 63. Rh5 indicating that it is a table base draw. So, it appears 57. d7+? may indeed be a weak move that throws away the win. 

Dec1208   Bobsterman3000: Maybe black would be better off declining the exchange and keeping his ds bishop... 



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