| Dec-23-09 | | patzer2: Black comes out of the opening in good shape, but gets lost in the complications after White's speculative piece sacrifice 33. Ng3?! Black correctly accepst the piece offer, but throws away the win by not playing 43...Re2!  .
White now on his 47th turn should have played 47. Rf7+ for the draw by perpetual, but gets risky and plays 47. f7? when Black could have won with the surprising defensive maneuver 47...Re3+! 48. Bxe3 Ne2 (instead of losing with 47...Ne7??). |
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| Apr-14-22 | | Brenin: Black is well ahead in material, but his K's position looks dire: White is threatening 48 fxe8=Q+ and 48 Rg8+ Ke7 49 f8=Q+. Let's stop the first threat with 47 ... Re3+, and after 48 Bxe3 stop the second with 48 ... Ne7. Now Black has two pieces en prise and no useful checks. A win for Black. |
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| Apr-14-22 | | raymondhow: Well I did choose 47...Re3+, wasn't yet sure about the follow up. I might have picked 48...Ne7, but didn't get the chance since the game didn't go that way. |
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| Apr-14-22 | | Brenin: As a postscript, the win for Black is not quite as obvious as I had first thought: after 49 Bc1 Black does best to leave the comically useless Rs on g7 and h7, and play 49 ... d3, threatening Bxg7 as well as promotion of the d-pawn, e.g. 50 Rh8+ Kxg7 51 Rxa8 Kxf7 52 Rd8 Ke6 followed by Nd5, and the d-pawn queens. |
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| Apr-14-22 | | Honey Blend: 47. ... ♖e3+ seems to be a great way to move the rook away from the threat of fxe8=♕ with tempo. If White declines, e.g. 48. ♔g2 ♘f4+ 49. ♔g1 ♗xh7 or 48. ♔h2 ♖h3+ 49. ♖xh3 ♔g7 neither of which work well. 48. ♗xe3 looks forced, and now 48. ... ♘e7 defends g8 and opens a discovery to ♖h7:
click for larger viewBlack will win big material here with a passed d-pawn, more than enough for a win, and ♗e3 is en prise too. |
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Apr-14-22
 | | al wazir: I think the way for black to cover all bases is 47...Re3+ 48. Bxe3 Ke7 49. f8=Q+ (49. Rg8 Nf8) Kxf8 50. Rf7+ Kg8 51. Rxf5 Kxh7, leaving him a piece up. |
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| Apr-14-22 | | mel gibson: I wasn't sure.
The game is a bit strange as Black plays but loses.Stockfish 14 says Black wins with a different ply: 47... Re3+
(47. .. Re3+ (♖e8-e3+
♗f2xe3 ♘g6-e7 ♖h7-h8+ ♔f8xg7 ♖h8xa8 ♔g7xf7 ♗e3-c1 d4-d3 ♖a8-d8 ♔f7-e6
♔g3-f3 ♗f5-g6 ♔f3-g4 ♘e7-c6 ♖d8-c8 ♔e6-d7 ♖c8-g8 ♗g6-f7 ♖g8-f8 ♔d7-e7
♖f8-a8 d3-d2 ♗c1xd2 ♗c3xd2 ♔g4-f5 ♗f7-e6+ ♔f5-e4 ♗d2xg5 ♔e4-d3 ♘c6-b4+
♔d3-c3 ♗g5-f6+ ♔c3-d2 ♗f6-d4 ♖a8-a4 ♔e7-d7 ♖a4-a5 ♗e6-f5 ♔d2-c1 ♘b4-c6
♖a5-a8 ♗f5-e4 ♔c1-d2 ♘c6-b4 ♖a8-a4 ♗e4-b1 ♔d2-c1) +5.18/35 88) score for Black +5.18 depth 35
When I force Stockfish 14 to follow
the game line 47... Ne7
White wins.
47. f7 Ne7
48. fxe8=Q+
(48. fxe8=Q+(f7xe8♕+ ♖a8xe8 ♖g7-f7+ ♔f8-g8 ♖h7-g7+ ♔g8-h8 ♖f7xe7 d4-d3 ♖g7-h7+ ♔h8-g8
♖e7xe8+ ♔g8xh7 ♗f2-e3 ♔h7-g7 ♖e8-d8 ♔g7-f7 ♔g3-f4 ♔f7-e7 ♖d8-d5 ♗f5-g6
♗e3xc5+ ♔e7-e6 ♖d5-d8 d3-d2 ♗c5-e3 ♔e6-e7 ♗e3xd2 ♔e7xd8 ♗d2xc3 ♗g6-b1 a2-a3
c7-c5 ♔f4-e5 ♗b1-c2 b3-b4 c5xb4 a3xb4 ♗c2-d3 ♗c3-d2 ♗d3-f1 ♔e5-d4 ♔d8-d7
♔d4-c5 ♗f1-d3 ♗d2-e3 ♔d7-c8 ♔c5-d4 ♗d3-b1 b4-b5 ♔c8-b7 ♔d4-e5 ♗b1-c2 ♗e3-d4
♗c2-d3) +3.12/40 193)
White wins with score +3.12 depth 40. |
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| Apr-14-22 | | agb2002: Black has a bishop and a knight for a pawn.
White threatens Rg8+ and fxe8=Q+.
The first idea is 47... Ne7, to control g8 and threatening Bxh7, but is met with 48.fxe8=Q+ Rxe8 (48... Kxe8 49.Rxe7+) 49.Rf7+ Kg8 50.Rhg7+ Kh8 51.Rxe7. Therefore, 47... Re3+:
A) 48.Bxe3 Ne7
A.1) 49.Rh8+ Kxg7 50.Rxa8 Kxf7 must be winning. For example, 51.Bf4 d3 52.Rd8 c6 53.Kf3 Nd5 followed by d2 wins the bishop. A.2) 49.Bf4 Bxh7 50.Rxh7 (threatens g6-Bh6+) 50... d3 must be winning. For example 51.g6 Bg7, with the double threat Rxa2 and Nxg6. A.3) 49.g6 exd3 50.Rh8+ Kxg7 51.Rxa8 Nxg6 wins decisive material. B) 48.Kh2 Rh3+ 49.Rxh3 Kxg7 50.Rf3 Be4 wins decisive material. C) 48.Kg2 Nf4+, followed by Bxh7, wins decisive material. |
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Apr-14-22
 | | scormus: My first reaction was 47 .... resigns, but obviously that couldn't be right. What about 47 ... Re3+ or ... Ne7? The former doesn't seem to set up anything serious, and the latter doesn't work because of the Re8. One after the other gets B out of the mire, but I confess I didn't see how it was winning. A lot tougher than yesterday |
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| Apr-14-22 | | Stanco: Yes, this time is a blend.
I was checking Re3 and Ne7 lines separately only to realise I should play both moves. |
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| Apr-14-22 | | parch: Went for 47...Re3+ 48.B:e3 Ne7 49.Rh8+ K:g7
50.R:a8 K:f7 looks OK, did not consider 47...Ne7. |
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| Apr-14-22 | | TheaN: The point here is to prevent the fxe8 threat whilst keeping material up or balanced: mind that with the puzzle start, Black is up <two pieces>, so there is some to invest. <47....Re3+! 48.Bxe3> 48.Kg2 Nf4+ -+ is horrible, and 48.Kh2, if anything, allows Black the same defense as the game with the rook still on the board, though 48....Rh3+ -+ is probably more clinical. <48....Ne7! -+>
click for larger view
One of the more bizarre positions with technically equal material that I've seen in a while. White is busted though, as there's no real way to do something against the Bxh7 threat. Ne7 protects against Rg8, and 49.Rh8+ Kxg7 50.Rxa8 Kxf7 -+ levels the playing field but the d-pawn will run down unopposed. Any slow play by White will meet the same fate. Very interesting defensive shot. |
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| Apr-14-22 | | parch: <al wazir:> 47...Re3+ 48.B:e3 Ke7 49.f8+
Line does'nt look bad.
(49.Bf2 Nf8 50.Rh6 Ra5 )
[50.Rh8 d3 51.B:c5+ Ke6 52.B:f8 d2 53.Rh1 R:f8]
49...K:f8 50.Rf7+ Ke8 51.B:d4 cd4 52.R:f5 being a piece up. |
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| Apr-14-22 | | Cellist: I saw 47. ... Re3+ 48. Bxe3 Ne7 and thought that this was the only chance of preserving a chance for a win for Black even though the R on a8 will fall after 49. Rh8+ Kxg7 50. Rxa8, but White's remaining B will be en prise, and the black pawns are strong, supported by Black's B pair. |
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| Apr-14-22 | | Tiggler: I saw that anything but Rxe3+ must lose, but after Bxe3 I chose Be1+. I think it wins, but not quite sure. 47...Re3+
48. Bxe3 Be1+
49. Bf2 Bxf2+
50. Kxf2 Rxa2+
51. Kg3 |
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Apr-14-22
 | | Teyss: Best line ends B+N vs R with promotion threats. Too subtle for me. |
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Apr-14-22
 | | steinitzfan: This is a sort of inverse combination. In most combinations, you sacrifice material to close off escape routes for the enemy king. Here you're giving some material back to provide your own king with a minimal escape route. |
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Kibitzing
sac: 33.Ng3