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| Dec-10-11 | | sethoflagos: Familiar nemesis for KID/Benoni players who neglect f6. Black is pretty well lost after 15...Ng8??. 15...Rf8 followed by 16...Ne8 puts up some sort of defence, but even a Benoni specialist can lose from here, see Shirov vs A Kovacevic, 1997 with another rook sac on f6. Full credit to white though for a clinical finish against a very strong opponent. |
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| Dec-10-11 | | morfishine: <sethoflagos> Great Game Shirov vs Kovacevic A good example of why the Benoni has fallen out of favor at the GM level |
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| Dec-10-11 | | polarx: IMO the rook attack is intuitive and obvious. The maze of continuations is the hard part. I thought 23 Rxf6 Rxf6 24 Rxf6 Kxf6 25 Qh4+ did the trick. Blindspot for 25... g5. |
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| Dec-10-11 | | sevenseaman: <FSR: So simple, yet so hard to see.> It was a bleak prospect. For a minute or so I simply gawked, thinking of inanities like how powerful the N fork from e6 would be but for the Black LSB, or if I could mobilize my own LSB. Then I saw the N could equally well fork from the other square, i.e. e8. And the battering ram clicked in my head. Perhaps I could persuade Black Q to come to f6. |
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Dec-10-11
 | | Penguincw: I was thinking of that move, but didn't think it was good. |
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| Dec-10-11 | | 5hrsolver: Didnt see the defense 24. ...Bxh3 but did find 25.Re6 !! after that. What a move. Black has to take care of the attacked bishop and white is ready to invade with Qxe5. Here is one line I saw
23.Rxf6 Rxf6 24.Rxf6 Kxf6 25.Qh4+ g5 26.Qxh6+ Kf7 27.Qxh7+ Kf6 28.Nd5+ Ke6 29.d7!! Bxd7 30.Qg6+ Qf6 31.Qxf6# |
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Dec-10-11
 | | kevin86: This one is a little complicated for me-even after I saw the solution,I still can't figure it out. |
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Dec-10-11
 | | Jimfromprovidence: <morf> <A possible improvement for Black is to try <Nf7> at some time to protect the e-pawn. For example 23.Rxf6 Rxf6 24.Rxf6 <24...Nf7>. But white still gets in a powerful exchange-sac after 25.Rxf7+ Kxf7 26.Qxe5> <morf> Good thinking. You can still play 25 Re6 here as well, I believe. (with the threat of 26 Re7). 
click for larger viewOne continuation is 25...Qg5 26 Qxg5 Nxg5 27 Re8!, below (with the threat of 28 d7). 
click for larger view |
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| Dec-10-11 | | BOSTER: Looking at the <POTD> I at first sight payed attention on the position bishop d3 and the advanced d6 pawn with great potential, which under attack. If you are studing the position deeply, you should understand that the developing your least active piece-bishop d3-is the most important to activate all army and supporting the pawn d6. Untill black rook b8 out of play and the knight h6 on the edge,you can sacr. what even you want.
So 23.Rxf6 (protecting d6 pawn) Rxf6
24.Rxf6 (Qxe5-another variation) Kxf6
(if Qxf6 Ne8+) 25.Qh4+ g5 26.Qxh6+ Kf7
27.Qxh7+ Kf6 28.B e2! and white is better. |
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| Dec-10-11 | | ajile: Here's another early option and the reason why Black didn't take the pawn on move 12. 12..Rxe3
click for larger view Analysis by Rybka 3 32-bit : 22 ply
1. ± (0.81): 13.Qd2 Re7 14.Ng5 Nbd7 15.Qf4 a6 16.Qh4 Qf8 17.Nce4 
click for larger viewNote the initiative White has gotten for the pawn sac. Rxe4 18.Bxe4 h6 19.Nf3 b5 20.b3 Rb8 21.Bd3 g5 22.Qe1 Nh5 23.Qd2 Nf4 24.Rae1 f6 25.h4 bxc4 26.bxc4 Qf7 2. ² (0.31): 13.Rf2 Nbd7 14.Qd2 Re7 15.Raf1 |
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| Dec-10-11 | | morfishine: <Jimfromprovidence> You are right! Your continuation looks stronger than the exchange sac: White's rook still uses <e6> to great effect: even in your line with the Queens off, Black is doomed due to his weak back rank <Ajile> You must've been reading my mind. That was on a "to do" list for me to check why Black couldn't take the e-pawn on move 12. Appreciate you posting that |
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| Dec-10-11 | | ceegebe: Can black hold the position after 24. ... Bd7? 
click for larger view |
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| Dec-10-11 | | dgbuckmeister: If 23...Qxf6 24. Rxf6 Kxf6, black gives up Queen for 2 white Rooks, but has quite a playable game ... or am I missing something. |
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| Dec-10-11 | | bischopper: <5hrsolver> to find mates after of 23 Rxf6...its very easy but where is the mistake from black? It is my question. |
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| Dec-10-11 | | thegoldenband: BTW I saw this one within 30 seconds or so. I didn't fully work out the implications of 24...Kf6 25. Qh4+ g5, but 2 pawns and a raging attack for the exchange is a no-brainer even if you can't see the conclusion of the line. |
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| Dec-10-11 | | thegoldenband: <dgbuckmeister> After 25. Nd5+ things get ugly real fast, e.g. 25...Ke6 26. Qh4, or 25...Kg7 26. Qxe5+. |
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| Dec-10-11 | | ajile: < morfishine: >
It's kind of a subtle poisoned pawn. Hard to see that 5-10 moves later Black will be under intense pressure. I would recommend this line for White in a tournament situation. |
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| Dec-10-11 | | 5hrsolver: I think black could have avoided his troubles if he played 17. ...Pa6 first driving away the knight from attacking d6 |
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| Dec-10-11 | | CHESSTTCAMPS: Material is even, with white showing a fine force of major pieces applying serious pressure to the the black kingside. On the downside, white has the "bad" bishop, but black's undeveloped bishop keeps the Rb8 from defending the back rank. Black threatens 23... Qxd6 driving the invading knight away, so white has one move to take advantage of an opportunity. 23.Rxf6!!
Lines of force make this a candidate to look at and this was my first and only candidate. A potential fork at e8 and a deadly skewer at h4 make it work: A) 23... Rxf6 24.Rxf6 (now either recapture at f6 is a demonstrable loss) Kxf6 25.Qh4+ g5 (K moves 26.Qxd8 wins easily) 26.Qxh6+ Kf7 27.Qxh7+ Kf8 (Kf6 28.Nd5#) 28.Qh8+ wins. A.1) 24... Qxf6 25.Ne8+ Kf7 26.Nxf6 Kxf6 27.Qh4+ Kg7 (otherwise 28.Qxh6) 28.Qd8 Nf7 29.Qc7 Ra8 30.d7 wins. A.2) 24... Nf7 (to defend e5) 25.Re6! (black is tied up!) Bd7 26.Re7 and the primary threat of Qxe5+ can't be defended without other material loss. A.2.a) 25... Bxe6 26.Nxe6+ wins.
A.2.b) 25... Nxd6 26.Qxe5+ Kf7 27.Rxd6 Qxf7 28.Rf6+ wins. A.2.c) 25... Kf8/g8/h8 26.Re8+ wins
A.2.d) 25... Kh6 26.Re7! Qxd6 27.Qh4+ Kg7 27.Ne8+ wins B) 24... Nf7 25.Qf2! Nxd6 (otherwise Rxf7+) 26.Rxf8 Qxc7 27.Qxe5 and the double threat of R1f4 and R1f6 can't be met. C) 24... Rg8/h8 25.Qxe5 and a winning discovered check follows D) 24... Re8 25.Nxe8+ Qxe8 26.Rf8 Qxf8 27.Qxe5+! Kg8 28.Rxf8+ Kxf8 29.d7 wins efficiently. E) 24... Nf5 25.Rxf8 Q/Kxf8 (Nxg3 26.Rxd8) 26.exf5 wins F) 24... Bf5 25.Rxf8 Q/Kxf8 26.exf5 wins
G) 24.... other 25.Rxf8 wins
A.2 looks like the best black defense to give white a chance to go wrong. Time for review.... |
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| Dec-10-11 | | CHESSTTCAMPS: Missed the game defense :( , but when I saw 24... Bxh3 on the Java board, I managed to find the right continuation after a few minutes. |
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| Dec-10-11 | | CHESSTTCAMPS: You can play the puzzle position against Crafty from the following link: http://www.chessvideos.tv/endgame-t... This time, Crafty did not give me any trouble. |
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| Dec-10-11 | | HectorChess: Henrik Danielsen played like Magnus Carlsen in this game. |
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| Dec-11-11 | | TheBish: H Danielsen vs C Hansen, 1997 White to play (23.?) "Very Difficult"
White breaks through with 23. Rxf6! Rxf6 24. Rxf6 Kxf6 Or 24...Qxf6 25. Ne8+ Kf7 26. Nxf6 Kxf6 27. Qh4+ Kg7 28. Qe7+ Nf7 29. d7 and wins. 25. Qh4+ g5 26. Qxh6+ Kf7 27. Qxh7+ Kf6
Or 27...Kf8 28. Qh8+, winning the queen.
28. Nd5+ Ke6 29. d7! and White will mate sooner or later; sooner if Black plays 29...Bxd7 (Qxd7) 30. Qg6#. |
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| Dec-11-11 | | ounos: I didn't see Re6 (well, I didn't see the defence of Bxh3), but since the rest of it came in less than half a minute, I don't think this was really "very hard". Modulo the final move, this is more like a Tuesday, perhaps Wednesday |
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| Dec-11-11 | | ceegebe: <CHESSTTCAMPS:> "A.2 looks like the best black defense to give white a chance to go wrong." 
click for larger view |
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