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| Sep-18-15 | | The17thPawn: <Phoney Benoni> After 73. Kg3 black seems to have perpetual shuffling rook between e3 and e1 but I can't see any real progress. Perhaps this represents the = advertised in the notations. |
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Sep-18-15
 | | chessgames.com: The reason for the = notation is this miracle draw discovered by Stockfish: 72...Re1! 73.Ra7+ Kh6 (...Kg8? 74.Kxe1 h2 75.Bc4+  ) 74.Ra8 h2 75.Rh8+! Nh7 76.Rg8! and Black has nothing better than the perpetual, ...Ng5 Rh8+ Nh7 Rg8 etc. |
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Sep-18-15
 | | FSR: If 73.Kg3, Rg1+ 74.Kh2 Rg2+ 75.Kh1 Nf3 and mates. If 73.Bf1, h2 74.Bg2 h1(Q). |
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| Sep-18-15 | | Moonwalker: Ha! I chose Re1 as a stab in the dark. Glad to see there weren't better options! |
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| Sep-18-15 | | Abdel Irada: I overlooked White's drawing resource, but I did look at what's wrong with 73. Kg3. Black continues 73. ...Rg1+ 73. Kh2, Rg2+ 74. Kh1, Nf3, with an Arabian mate in prospect and no obvious way to prevent it. However, after playing over this game of vacillation, hesitation and trepidation, I am convinced that a draw was the only result that could have been acceptable, so the "miracle" resource was completely in keeping with the position. ∞ |
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| Sep-18-15 | | patzer2: Though I don't recall seeing this game before, somehow the position looked familiar and 72...Re1! jumped out at me. Maybe it's because it was a Friday puzzle and Black's only winning chance in the position was advancing the passed pawn. Realizing that, I figured the best way to clear a path for the pawn was forcing an obstruction with 72...Re1!, hoping for 73. Kxe1?? h2  . However, what I did not see was that White can force a draw after 72...Re1! 73. Ra7+! when Fritz indicates play might continue 73. Ra7+ 73... Kh6 74. Ra8 h2 75. Rh8+ Nh7 76. Rg8 Ng5 77. Rh8+ Nh7 78. Rg8 Ng5 79. Rh8+ = (draw by three-fold repetition). Also, 72...Re1! 73. Bf1 h2 74. Bg2! (not 74. Kg2?? Rxf1 ) 74...h1=Q 75. Bxh1 Rxh1 76. Ke3 Nf7  (-0.32 @ 25 depth) looks likely to end in a draw. P.S.: Earlier, instead of <64. Rf7> Fritz finds White missed the win 64. Rg8! when play might continue 64...Kh7 65. Re8! Nxh3 66. b4 Ra1 67. b5 Rb1 68. c4 Nf4 69. Bf3! h3 70. g5! (-5.06 @ 20 depth, Deep Fritz 14). |
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| Sep-18-15 | | agb2002: Black has a knight for a bishop and a pawn.
The move 73.Ra1 can control the promotion square of the h-pawn. This invites to play 72... Re1: A) 73.Kxe1 h2 and the pawn promotes (74.Be4 Nxe4 75.Ra7+ Kh6 76.Ra8 h1=Q+ 77.Ke2 Qxa8, etc.). B) 73.Kg3 Rg1+
B.1) 74.Kh2 Rg2+ 75.Kh1 Nf3 and mate in three.
B.2) 74.Kf2 h2 75.Ra7+ Kh6 78.Ra8 h1=Q wins.
C) 73.Ra7+ Kh6 74.Ra8 h2 (74... Nh7 75.Kxe1 followed by Be4 or Bf1 and White wins) 75.Rh8+ Nh7 76.Rg8 Ng5 (due to 77.Rg6#) 77.Rh8+ repeats moves. D) 73.Bf1 (threatens 74.Bxh3 Nxh3+ 75.Kxe1) 73... h2 74.Bg2 h1=Q 75.Bxh1 Rxh1 with a knight for two pawns and the better ending. It seems Black can't win due to the bad position of its king. |
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| Sep-18-15 | | dfcx: black is down a pawn, but the passed h pawn is close to promotion. 72...Re1!
This move services two purposes, preventing white's Ra1 and protecting the pawn's promotion. A. 73.Kxe1? h2 wins
B. 73.Kg3 Rg1+ 74.Kh2 (Kf2 h2 promotes next) Rg2+ 75.Kh1 Nf3 mate next move C. 73.Bf1 h2 74.Bg2 h1 75.Bxh1 Rxh1
This looks like a draw.
click for larger viewFiring up Crafty to check, white can easily draw after 72...Re1 with 73.Ra7+ Kh6 74.Ra8 Kg7 (h2 75.Rh8+ Nh7 76.Rg8 draws) 75.Rg8+ Kxg8 76.Bc4+ wins 
click for larger viewSo the best result for this game is DRAW! |
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| Sep-18-15 | | morfishine: I didn't see anything at all, and frankly, didn't fathom in the slightest what was going on in any way whatever |
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| Sep-18-15 | | gofer: The solution is a "classic". If white plays Ra1 then Ph3 cannot promote
and black is likely to lose. So we must gain control of the 1st rank first... <72 ... Re1!>
73 Kxe1 h2
73 Kg3 Rg1+
74 Kf2 Rg2+ (74 Kh2 Rg2+ 75 Kh1 Nf3 mating )
75 Kf1 Nf3
<73 Bf1 h2>
<74 Bg2 h1=Q>
<75 Bxh1 Rxh1>
~~~
Ahh, black missed it. So would I have done OTB...
As others have pointed out even after gaining a piece a draw
is still likely... |
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| Sep-18-15 | | diagonalley: <morfishine> ... same here :-( |
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| Sep-18-15 | | Hans Kastorp: 72. ... Re1 is a beautiful solution, even if it leads to a draw. Otherwise, Black loses a game, like it happend, isn't it? |
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| Sep-18-15 | | lalla: 72 ....Re1,73 Kg3 Rg1 74 Kh2? Rg2 75 Kh1 Nf3 wins |
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| Sep-18-15 | | psmith: I saw both Re1 and the follow up after Kg3, but didn't look closely enough at Ra7+ by White. |
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| Sep-18-15 | | framsey: Okay, this is without looking. Hopefully I don't wind up looking like a fool! 72...Re1!
The point is that if the K captures the R, the pawn queens: 73. Kxe1 h2
Now:
- Be4 is met with Nxe4
- Ra7+ Kh6 Ra8, then either Kg5 (if the N is on e4) or just h8=Q, and if Rh8+, Nh7. The critical line (when white doesn't capture the rook): 73. Kg3 Rg1+
74. Kh2 Rg2+
75. Kh1 Nf3 (with Rh2# to follow)
I guess the best for black is to give up the rook for the pawn on the h-file with Ra7+, and then Ra8, Rh8. Actually, scratch that: I think white can get away with only losing his B:
73. Ra7+ Kh6 74. Ra8 h2 75. Rh8+ Nh7 76. Be4 h1=Q 77. Bxh1 Rxh1) (Hmm, what about Bf1 immediately? I think that's just anther way to lose the B for the pawn:
73. Bf1 h2 74. Bg2 (Kg2 Rxf1) h1=Q 75. Bxh1 Rxh1) |
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| Sep-18-15 | | framsey: Ah, checked with Stockfish. This is a forced draw:
73. Ra7+ Kh6
74. Ra8 h2
75. Rh8+ Nh7
76. Rg7
and white is threatening mate on g6, so Ng5, and repeat. Draw. |
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| Sep-18-15 | | kevin86: I saw 75...Re1!! immediately, complications can lead to a draw by white, but he won't win as in text. |
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| Sep-18-15 | | thegoodanarchist: Great puzzle! CG.com, thanks for the explanation & super cool stockfish drawing line. |
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| Sep-18-15 | | whiteshark: I cudn't find a win for black after <72...Re1 73. Bf1 h2 74. Bg2 h1Q 75. BxQ RxB> :( Even though you hardly sacrifice yourself;
Even so I ask you
And burning myself in your breast,
I save myself and damn myself: love. |
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Sep-18-15
 | | Bubo bubo: 72...Re1 looks attractive:
A) White must not capture, since 73.Kxe1 leaves the h-pawn's square and blocks the first row, so after 73...h2 Black gets a new queen. B) Trying to fight the passed pawn with 73.Kg3 is also futile, because 73...Rg1+ drives the king away: 74.Kh2 fails to the unstoppable arabian mate after 74...Rg2+ 75.Kh1 Nf3. C) But after 74.Bf1 I do not see anything better than 74...h2 75.Bg2 h1Q 76.Bxh1 Rxh1, Black having a knight for two pawns. |
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| Sep-18-15 | | The Kings Domain: Nah, didn't get this one.
Nice positional game. |
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| Sep-18-15 | | HowDoesTheHorsieMove: I did pick Re1. I did not see that was only a draw. |
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| Sep-18-15 | | CHESSTTCAMPS: Black has the material disadvantage of knight for pawn plus bishop, but has the advanced protected passed pawn on h3 as compensation. To promote the pawn, black must control the queening square. 72... Re1! forces white to give up the bishop to stop the pawn promotion: A) 73.Kxe1 h2 74.Ra7+ Kh6 and white can't stop h1=Q with an endgame that should be won for black. B) 73.Bf1! h2 74.Bg2 h1=Q 75.Bxh1 Rxh1 with clear advantage to black and the burden of proof on white to establish a draw. A tricky ending I will not take the time to analyze... time for review. |
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| Sep-19-15 | | Abdel Irada: <morf>, what happened to your avatar? ∞ |
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| Sep-22-15 | | morfishine: <Abdel Irada> Other priorities preclude my full-time attention to chess and <CG> in general, and I will not be renewing my premium membership. You are one of my favorite posters. Your frank, point-blank way of stating things, whether related to chess or some other topic, are admired by myself. Sorry for the slow reply and thanks for asking |
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Kibitzing
sac: 52.Rdd4