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| Dec-12-08 | | TrueBlue: got Kf4 right away, not that difficult. Problem is that without Kf4 black has the nasty Re3. And of course, it was obvious that after d7 white can get some material, e.g., the Rg8 pin |
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| Dec-12-08 | | whitebeach: After reflecting that 56. d7 would be strong except for the potential black rook fork of the white king and bishop, it was pretty easy to find 56. Kf4. Even so, I was impressed that Torre managed to hold on for another fourteen moves. I wonder if the game was adjourned after his 56th. |
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| Dec-12-08 | | mworld: i like endgames...nice to get a friday in about 5 seconds as well. |
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| Dec-12-08 | | nimzo knight: Got Kf4, though not sure why Be6 is required, same Be6 as yesterday! |
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Dec-12-08
 | | gawain: Oh, I see. Thanks <TrueBlue> I was thinking it had to be d7 right away but I had not seen that B would play...Rd3 as soon as W takes the c8 rook. And then I thought it might be d7 right after Kf4 but that is not good enough either because of the eventual Rc3 Very instructive. |
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| Dec-12-08 | | dzechiel: White to move (56?). Black is up an exchange. "Difficult." This position looks familiar to me. I have either seen it before, or seen a position that was very similar. A real danger for white here is to win the black rook on b8 at the expense of both his pawns. Only black would have winning chances at that point. Even losing the d-pawn only is risky, as the white bishop is the wrong color to aid in the h-pawn's promotion. I also don't think that 56 Rxh7 Re3+ 57 Kg4 Rxb3 58 Rh8+ Kd7 59 Rxb8 Kxd6 60 h4 is good enough to win, I think the black king is close enough to draw against a rook pawn. Interesting features of this position are the nice way white has confined the black king to the back rank, and the fact that black is threatening to win white's bishop. Looking for candidate moves, I can only see 56 Kf4
This move stops 56...Re3+ forking the bishop, and threatens the black rook, and so gains a tempo while black moves it away. So where does the rook move? If black should leave the e-file with something like 56...Rh5 then white can play 57 Be6 followed by 58 Rg7 which seems to completely bottle up the black king for checkmate. So I think black will have to stay on the e-file with something like 56...Re1
This now allows white to trade just the d-pawn for the rook, keeping his rook on the board (as it will be necessary to escort the h-pawn). 57 d7+ Kd8 58 Rf8+ Kxd7 59 Rxb8 Kc6 60 Rh8 Re7 61 Bc2 followed by the capture of the pawn.
I'm a little uncertain of the way this game will actually end, time to check. |
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| Dec-12-08 | | JG27Pyth: I think my variation is every bit as good as the text... 56.Kf4 Rc5
57.d7+! Kd8 (forced)
58.Rf8+
a)58...Kc7 59.Rxb8 
b)58...Kxd7 59.Rxb8 |
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| Dec-12-08 | | zooter: Chessgames tests our endgame knowledge...
56.d7+ Kd8 57.Kf4
Now black has various options Re7, Re2 and Re1 -- black needs to maintain the rook on the e file or he gets into trouble after say 57...Rh5 58.Rf8+ (either skewering the rook or queening the pawn) So maybe he might actually decide to attack the h pawn after all...this is all very confusing and i'm going to check |
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| Dec-12-08 | | JG27Pyth: Well... upon further reflection... I think Black draws against my variation... bummer... so <that's> why this is difficult! |
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| Dec-12-08 | | zooter: hmmm...why not 56.d7+ Kd8 followed by 57.Kf4? Does this lose? |
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| Dec-12-08 | | patzer of patzers: I was thinking for a moment about 56.d7+ Kd8 57.Rf8+, but did not see 57...Kxf7 58.Rxb8 Re3+, where white fails. |
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| Dec-12-08 | | JG27Pyth: Dzechiel gave: <[56 Kf4 Rc5] 57 d7+ Kd8 58 Rf8+ Kxd7 59 Rxb8 Kc6 60 Rh8 Re7 61 Bc2 --> I think that's right up to 59.Rxb8 but then you run into 59...Rc3 forking Bishop and Pawn... Black captures either way and it's drawing I believe. The (ok, I admit, vastly superior) text preserves tempo never allowing Black the fork of B and P while White's rook keeps the Black king trapped on the back rank. Those GMs really do know a thing or too! |
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| Dec-12-08 | | Guguni: What if black plays 67... Kf8 instead of Rb8? If white then checks with 68. Rf7+ then black king can return to g8 and as soon as the white rooks moves it can again try to escape to f8. It looks like the black rook walked into a killing zone by 67... Rb8. |
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| Dec-12-08 | | think: Man! I got all excited, thinking I solved a Friday... I saw the exact same line dzechiel saw, up to move 59. |
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| Dec-12-08 | | centralfiles: <zooter: hmmm...why not 56.d7+ Kd8 followed by 57.Kf4? Does this lose?>
57...Rc5 with the threat of Rc3
should be enough to draw
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| Dec-12-08 | | DwayneMeller: I got 56Kf4 Rc5 57Be6 (the goal being to defend d7 and e3 with these two consecutive moves so white can play d7 threaten the b8 rook and promoting...which as in the game would cost black a rook) the need for these moves is clear when you see 56d7+ (my fist instinct which I analysed to find)...Kd8 57 Rf8+ Kxd7 58Rxb8 Re3+ 59Kg4 Rxb3 and 60...Kc7 running white off the b file and trying to promote on the b file this made me go back and find instantly 56Kf4 Rc5 57Be6 knowing now that white is making the threat of d7 real and the rest of the game could go all kinds of ways due to the number of black's moves on turn after turn to resist but knowing the rest of the game is a mop up operation is satisfactory enough for me. |
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| Dec-12-08 | | crwynn: <centralfiles: <zooter: hmmm...why not 56.d7+ Kd8 followed by 57.Kf4? Does this lose?> 57...Rc5 with the threat of Rc3
should be enough to draw>
57...Rc5?? 58.Be6 is like the game but worse. I think 56.d7 probably wins, but the problem is likely just 56...Kd8 57.Kf4 Re7 58.Rf8 Kd7 59.Rb8 Kc6, which has the same material balance as happened in the game, but Black's king is active instead of getting mated. |
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Dec-12-08
 | | Jimfromprovidence: Since this is a Friday puzzle, there should be a lot of potential lines in this game worth consideration after 56 Kf4. One plausible continuation is 56 Kf4 Rh5 57 Be6 Rh4+ 58 Ke5 Rh6, which yields the following position.
click for larger viewWhite must not be trigger-happy and play 59 d7?? first, because this soon creates an escape square for black’s king on e7. So, now, after 59 d7 59...Kd8, if 60 Rf8+ Ke7 61 Rxe8, black escapes with a draw after 61…Rxe6+. 
click for larger viewThere are two great moves for white after 56 Kf4 Rh5 57 Be6 Rh4+ 58 Ke5 Rh6. 59 Kd5 is one, but the more spectacular move is 59 Rg7!, threatening mate in one.
click for larger viewBlack here is forced to play 59…Rxe6+ to avoid mate. After 60 Kxe6, black cannot prevent white’s d pawn from advancing to the 8th rank without losing the other rook. |
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| Dec-12-08 | | patzer2: For today's Thursday puzzle solution, White plays the deflection 56. Kf4!! and the follow-up 57. Be6! to prepare a decisive advance of the passed pawn with 58. d7+! One interesting aspect of this contest is that the winning combination begins with the threat of a skewer attack and that Black resigns the game in the face of a final unstoppable skewer tactic. Here's my computer checked analysis:
<56. Kf4!!> White wants to play d7+ with a skewer to follow, but, in order to make the threat decisive, he must first prepare for it by defending Black's double attack counter threat of ...Re3+. Not quite strong enough is 56. d7+ Kd8 57. Kf4 (57. Rf8+ 57... Kxd7 58. Rxb8 Re3+ 59. Kg4 Rxb3  ) 57...Rc5 58. Rf8+ Kxd7 59. Rxb8 Rc3 60. Bd1 Kc7 61. Rxb5 Rxh3  . <56... Rc5>
If 56... Re2, White wins after 57. d7+ Kd8 58. Rf8+ Kxd7 59. Rxb8 Kc6 60. Rh8 Rb2 61. Bg8 b4 62. Bxh7 + - . <57. Be6!> The primary purpose of this move is not so much to protect the d-pawn advance as it is to protect the pawn on h3. 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 . <57... Rd8> Black defends against the skewer tactic 58. d7+ Kd8 59. Rf8+ Kxd7 60. Rxb8 . However, he still loses to the initial threatened move. <58. d7+> This forces the win of one of Black's Rooks, and leaves White with a protected
pawn to insure his win. The rest is a matter of technique. <58...Rxd7 59. Rxd7 h6 60. Rh7 Kf8 61. Bf5 b4> No help for black is 61... Rc4+ 62. Ke5 Rc5+ 63. Kf6 Rc6+ 64. Be6 . <62. Rxh6 Rb5 63. Kg5 Kg7 64. Rh7+ Kg8 65. Rc7 Rb6 66. Bg6 b3 67. Kh6
Rb8 68. Rg7+ Kh8 69. Rh7+ Kg8 70. Bf7+> 1-0 Black resigns in lieu of the decisive skewer tactic 70...Kg8 71. Rh8+ Kxf7 72. Rxb8 . |
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| Dec-12-08 | | viky: I did not find anything more than..
56 d7+ Kd8 and now I wanted to maneuver by bishop to Bd1 and then Bb4 but
not sure if this is the answer.. don't know the best possible defense for black.. give up..
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| Dec-12-08 | | viky: Kf4! I completely missed it :( |
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| Dec-12-08 | | jovack: i went for d7+ first but realized black would equalize because your king and bishop are aligned. then i saw Kf4 would give you your tempo by allowing you to move the king while not allowing black to repsond to the threat, then i went for d7 i think this is winning, of course i looked it over for maybe 10 seconds. after looking a ljubo's answer, i agree that he played it more accurately by playing Be6 before d7, you set yourself up to elimate black's passer and ultimately have a much stronger advantage, this is just my quick analysis |
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| Dec-12-08 | | brankat: A beautiful technique by Ljubojevic. |
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| Dec-12-08 | | jpolchinski: <Guguni: What if black plays 67... Kf8 instead of Rb8?> 68 Kh7 threatens 69 Rf7+ followed by a deadly discovered check. If 68... Rf6 69 Rb7 gets the rook behind the black pawn, and now white can advance his own pawn. |
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| Dec-12-08 | | centralfiles: <crwynn: 57...Rc5?? 58.Be6 is like the game but worse.>
you mean Ljubojevic should have played 57.d7+ transposing into your line? |
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Kibitzing
sac: 15.Ne2