Viswanathan Anand vs Robert Kempinski (2010)

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Viswanathan Anand vs Robert Kempinski
Bundesliga (2009/10), Heidelberg GER, rd 11, Feb-28
Sicilian Defense: Scheveningen. Classical Variation (B84) · 1-0

ANALYSIS [x]

FEN COPIED

Given 19 times; par: 31 [what's this?]

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< Earlier Kibitzing · PAGE 2 OF 3 · Later Kibitzing>
Mar-20-10		ChocolateCakeLover: Puzzle of the day: March 20, 2010 Difficulty: Very Difficult Winning strategy: Exploit weak back rank Here's the situation: 1.Black's light square bishop is blocking the coordination of the two rooks 2. the king's rook is the only defender of the king. 3.There is a threat of a back rank mate. 4.White's queen is more active than black's. White could exploit these weaknesses by 24.♗g6! this move has two purpose: (a)If black takes the queen by 24...♖xf2 then 25.♖d8+ ♖f8 26.♖dxf8++ (b)Taking the bishop is also winning for white 24...hxg6 25.♕xf8 ♔h7 26.♖d3 24...♖g8 practically forced as there are no better reply then white could win by 25.♗xh7 slamming a hammer to the king as after 25...♔xh7 26.♕h4+ ♔g6 27.♖d3 with a threat of ♖g3 Should black try 27...♕h5 and black still wins by 28.♖g3+ ♔h6 29.♖f6+ gxf6 30.♕xf6+ ♕g6 31.♖h3++ click for larger view or 30...♖g6 31.♕h8++ click for larger view I hope I have not overlooked something. --Chocolover--

Mar-20-10		ChocolateCakeLover: Oh my, I have overlooked 24...♕f6 and black's position holds! This puzzle cracks up my brain :). Good puzzle though Anyway here's the position after 24...♕f6 so let's just leave this to the authorities. click for larger view

Mar-20-10		Mushroom: Chocolover. After 30 Qf6+ what about ...Kh7? How does White mate? The obvious move seems to be 31 Rh3 pinning the queen but then Qh3 and if 32 gh3 Bb7+ 33 Qf3 and black mates.

Mar-20-10		newzild: Got the first move, not the second. I'm really out of touch at the moment - been playing bad, too.

Mar-20-10		ChocolateCakeLover: Hello <mushroom>! Thanks for that. Indeed, Qf6+ isn't right at all because of Kh7. Anyway, I have read other posts and they are far better than mine. You could check tarek's post. He found out an improvement using rybka. Cheers.

Mar-20-10		Jjoq: <ChocolateCakeLover> 29. Rf6+? gxf6 30. Qxf6+ Kh7 =

Mar-20-10		ChocolateCakeLover: Hello <Jjoq>! Yes, you are right. 29.♕f4+ g5 30.♕xb8 is better

Mar-20-10		stacase: I certainly saw that the Bishop's motor was running. I didn't see that there was a way for the back rank mate to occur. I guess there wasn't (-:

Mar-20-10		Chris1Clark: My line was somewhat more cumbersome. 24. Bxe6 Qf6 25. Qxf6 gxf6 26. Bxc8 Rbxc8 27. Rd6 and white sweeps up some pawns and marches the a,b,c pawns in. Actual solution is more elegant, but this line is a clear win as well I think. Please shoot some holes in it if I have been dumb guys.

Mar-20-10		gofer: This is the second problem this week where Bc8 is killing black's position. In this case, the unconnected rooks allow multiple back rank mate threats and this means that white can easily give up a queen for a mating sequence, so moves like Bg8, Be8, Bh5, Bxe6 and Bg6 are all available. The issue with most of these is that they help black's defenses, but Bg6 seems to be the move to win the day... 24 Bg6 24 ... Bb7/Bd7 25 Qxf8+ Rxf8 26 Rxf8# 24 ... Rxf2 25 Rd8+ Rf8 26 Rfxf8# or Rdxf8# 24 ... Rd8 25 Rxd8# 24 ... Re8 25 Qf8+ Rxf8 26 Rxf8# 24 ... Rg8 25 Bxh7 Kxh7 (Re8 26 Bg6 winning) 26 Rd3 ... and now black has to give up her queen to avoid mate as white controls the f file. 26 ... g6 27 Rh3+ Kg7 28 Qf7# 26 ... Re8 27 Rh3+ Kg8 28 Qf7# 26 ... Qf6 27 Rh3+ Kg6 28 Qg3+ Qg5 29 Qd3+ Qf5 30 Rxf5 exf5 31 Qg3+ Kf7/Kf6 32 Qxb8 winning But what happens after 24 ... Qf6? The answer is that white simply sidesteps the threat on its queen and skewers Qf6 as it is tied to protecting Rf8! Option 1 (trade off into a losing endgame) 24 ... Qf6 25 Qe2 Qxf1+ 26 Rxf1+ Rxf1+ 27 Qxf1 hxg6 28 b3 ... white is going to mop up some of Pa6, Pc5, Pe6 and Pg3 at which point black is in deep trouble. Option 2 24 ... Qf6 25 Qe2 Qe7 26 Rxf8+ Qxf8 27 Rf1 ... (at which point we can transpose into the line above by Qxf1+) Now I originally thought that the waters were a little unclear as black has three other replies, but white is incredibly well positioned to drive forward this attack to make a win. 27 ... Qg8 28 Bxh7! Qe8 29 Bd3 Bb7 30 Qg4 and black is in real trouble as Qh4+ Kg8 Qh7# is threatened! 27 ... Qd8 28 Qh5 h6 29 Be8! Qe7 (to stop Rf8+ mating) 30 Qg6 Rb7 31 Rf7 Qxf7 32 Bxf7 winning 27 ... Qe7 28 Qh5 h6 29 Rf7 Qe8/Qd8 (Qe6 loses quicker as it isn't protecting the back rank) 30 Bd3 Bb7 (to stop Rd8 mating) 31 Kg1 and now it dawns on black that his position is completely lost as g4, g5, gxh6 are coming and there is very little that black can do to stop this!!! Time to check...

Mar-20-10		gofer: In the last part of my post I missed out one move... 27 ... Qe7 28 Qh5 h6 29 Rf7 Qe8/Qd8 (Qe6 loses quicker) 30 Bd3 Bb7 (to stop Rd8 mating) 31 Qg6 Qg8 32 Kg1 ... and now it dawns on black that his position is completely lost as g4, g5, gxh6 are coming and there is very little that black can do to stop this!!!

Mar-20-10		DarthStapler: I picked Bxe6 instead

Mar-20-10		Goldenraf: Actually, too easy for a Saturday. There is a mate on the 8th line, all we have to do is remove the pieces in the middle; as Capablanca would say "remove the leaves to see the path" The queen alone cannot defend the attack.

Mar-20-10		patzer2: For today's Saturday puzzle solution, Anand decisively exploits the weakened back rank and castled position with 24. Bg6!!: <24. Bg6!!> I also went for 24. Bxe6?! which yields no more than equality after 24...Bxe6 25. Qxf8+ Rxf8 26. Rxf8+ Bg8! (How did I miss this obvious defensive interposition?) 27. h3 Qxb2 28. Rdd8 =. <24... Rg8> If 24... Qf6, White wins after 25. Qe2! Qe7 26. Qh5! h6 27. Qh4 Rxf1+ 28. Rxf1 Qd6 29. Qg3! e5 30. Qxe5 (even stronger here is 30. Qd3! Qe7 31. Rf7 Qe8 32. Rxg7 Qf8 33. Rh7+ Kg8 34. Qd5+ Be6 35. Qxe6+ Qf7 36. Qxf7#) 30... Qxg6 31. Qxb8 . <25. Bxh7 Kxh7> If 25... Re8, then 26. Bg6 Qf6 27. Qg6 leads to a quick mate. <26. Qh4+ Kg6 27. Rd3 Qh5 28. Rg3+> Black resigns in lieu of 28...Kh6 29. Qf4+! with a winning double attack (e.g. 29...Kh7 30. Qxb8 ).

Mar-20-10		johnlspouge: Saturday (Very Difficult) Anand vs R Kempinski, 2010 (24.?) White to play and win. Material: Even. The stalemated Black Kh8 is vulnerable to back-rank mates, and indeed, the Black Bc8 weakens the back rank. White has a battery Rf1 and Qf2 x-raying the loose Rf8 behind Bf7, suggesting a discovered attack. The exposed Black Qe5 is loose and is the sole protector of Rb8. The White Kh1 is vulnerable to back-rank mate and secured from all checks but the pointless …Qxh2+. Candidates (24.): Rd8, Bh5, Bg6 [24.Rd8 Rxd8 25.Be8 h6 seems to hold] [24.Bh5 Qf6 25.Qe2 Qe7 seems to hold] 24.Bg6 Qf6 25.Qe2 Qe7 26.Rxf8+ Qxf8 27.Rf1 (1) 27…Qg8 28.Bxh7 Qxh7 [else, drop a critical P] 29.Rf8+ Qg8 30.Qh5# (2) 27…Qe7 [Qd6 28.Qe5 Qe7 29.Qxb8] 28.Qe5 (threatening 29.Rf7 30.Qxg7#) Black has no feasible defense. Likely best is 28…Rb7 29.Rf7 Qxf7 30.Bxf7 Rxf7 31.h3 White has Q for R+B, but the scattered Black Ps are easy targets. (3) 27…Qd8 28.Qh5 h6 29.Qxc5 (threatening 30.Rf8#) Given the overloaded state of Qd8, White might have better moves, but he wins at least a P in a vastly superior position. Toga evaluates my analysis at about +2.0 P, inferior to best play at about 2.7 P. According to Toga, the best play is 24...Qf6 25.Qe2 hxg6 26.Rxf6

Mar-20-10		bengalcat47: The spectacular finish of this game reminds me of Reti v. Bogoljubov, New York, 1924. In that famous game Reti exploited the weakness of his opponent's back rank in a most decisive manner.

Mar-20-10		David2009: Saturday 20/03/2010 puzzle Anand vs R Kempinski, 2010 Whie 24? In a game I am sure I would play the obvious 24 Bh5 forcing Rg8 aftr which 25 Qf7 threatens mate in two and so forces Bb7. Now 26 Rd7 Qxb2 now gives Black counter-play, so I have to play the cautious c3 with an edge. As this is a Saturday puzzle I look further and find 24 Bg6 Rg8 (hxg6 loses prosaically) 25 Rd8 hxg6 26 Qf8! and Black has to surrender the Rg8 with Kh7 to avoid mate, since Rxf8? allows mate in 2: 27 R1xf8+ Kh7 28 Rh8+. I find with these puzzles an interesting personal weakness. I always approach them as I would a rapid-play game (40 moves in 15 minutes or equivalently 5 minues + 15 s/move) and therefore tend to go for the first plausible attacking solution without thoroughly checking. Often typing out the solution in Notepad takes longer than the initial thinking process. I have discovered that I am seriously impulsive. On FICS, I lose most games through impulsive positional or tactical mistakes but the 30 minute time ration suits me. When I win, it is because I am successfully thinking ahead about 2-3 moves at a time. I do not get the beautiful combinations we see in these puzzles, instead games are decided because someone leaves a piece in the air/ is ground down in an ending. Time to check: ====== Right first move, different follow-up. Crafty check: http://www.chessvideos.tv/endgame-t... Well, there is a gaping hole in my analysis. First of all, Black misses the best defence (24...Qf6!). After 24 Rg8?, 25 Rd8? (another impulsive move!) fails to 25...Qf6!. In contrast, Anand's sacrifice 25 Bxh7! wins Q+P for R+B and a relatively easy win, and Black resigned without waiting for the proof. The ending after 24...Qf6! 25 Qe2 hxg6 26.Rxf6 gxf6 click for larger view is much harder to win. Try your luck with the Crafty link above: you are white, drag and drop the move you want to make. Post the win when you have found it. Good luck!

Mar-20-10		alexrawlings: Nice puzzle! I saw 24 Bg6 almost straight away, didn't consider any other moves and thought this puzzle wans't that difficult. However, I didn't see most of the lines analysed or consider the game continuation and recognise that this is, in fact, quite a hard puzzle.

Mar-20-10		shatranj7: This puzzle was Easy. I saw 1.Bg6 off the bat. After maybe 5 minutes, I saw the rest of the combination. I quickly saw that all lines for black were losing ones.

Mar-20-10		AuN1: surprisingly, that was not that hard.

Mar-20-10		wals: Rybka 3 1 cpu: 3071 mb hash: depth 15: Black's errors - 17...dxe5 +0.60, better was d5 +0.18 21...Nxe5 +2.83, better was Bxd4 +0.83 24...Rg8 +4.63, better was Qf6 +2.87

Mar-20-10		tacticalmonster: < chocolover > After 29. Rf6+ gxf6 30. Qf6+ Black had: 30. Kh7! click for larger view white had no choice but to go into forced perpetual check with 31. Qe7+ Kh6 32. Qf6+ or 31. Qe7+ Kh8 32. Qf6+ If white went for winning chance with 31. Rh3?? he lost with 31. Qxh3! 32. gxh3 Bb7+. White's material deficit and weak back rank prevented him from doing anything active

Mar-20-10		tacticalmonster: The simplest winning line after 28. Rg3+ for white is 28. Kh6 29. Qf4+ g5 (29. Kh7 Rh3) 30. Qxb8 By the way, < chocolover>, If you are still curious about the defense 24. Qf6, just read my earlier post.

Mar-20-10		agb2002: The material is even. Black threatens ... Q(R)xb2. The black castle has been seriously weakened, back rank included. The position reminds me of Reti-Bogoljubov, which led me to consider 24.Rd8 Rxd8 25.Be8, but after 25... h6 White seems to have problems to resume the attack. However, if Be8 yields nothing, perhaps moving the bishop in the opposite direction results more productive. Therefore, 24.Bg6, threatening 25.Qxf8#, 25.Bxh7 and 25.Qh4: A) 24... Qf6 25.Qg1 (25.Qe1 Qxf1+ 26.Qxf1+ Rxf1+ 27.Rxf1 hxg6 - +; 25... Qe7 26.Qh4 Rxf1+ 27.Rxf1 h6 (27... Qxh4 28.Rf8#) 28.Qxe7 hxg6 29.Rf8+ Kh7 30.Qh4#) Qe7 26.Rxf8+ Qxf8 27.Qxc5 A.1) 27... Qg8 28.Bf7 + - (28... Qxf7 29.Rd8+ Qg8 30.Rxg8+ Kxg8 31.Qc7 Ra8 32.Qc6). A.2) 27... Bb7 28.Qh5 h6 (28... Qg8 29.Bf7 and 30.Bxe6 + - [2P]) 29.Bd3 and White is a pawn ahead and threatens Qg6. A.3) 27... Bd7 28.Qh6 h6 (28... Qg8 29.Rxd7) 29.b3 followed by Bd3 looks similar to A.2. B) 24... Rg8 25.Bxh7 B.1) 25... Kxh7 26.Qh4+ Kg6 27.Rd3 B.1.a) 27... Qh5 28.Rg3+ Kh6 29.Qf4+ g5 (29... Kh7 30.Rh3 + - [Q vs R+B]) 30.Qf6+ Kh7 (30... Qg6 31.Rh3#; 30... Rg6 31.Qh8#) 31.Rh3 + - [Q vs R+B]. B.1.b) 27... Bb7 28.Rg3+ Qxg3 29.Qxg3+ (29.hxg3 Rh8 - +) Kh6 30.Rf4 + - [Q+P vs R+B]. B.2) 25... Be8 26.Bg6 + -, White threatens 27.Qf8+, 27.Qh4+ and 27.Bxe8. B.3) 25... Bb7 26.Qh4 g5 27.Qh5 Rg7 28.Bg6+ Kg8 29.Bf7+ Kf8 30.Bxe6+ Ke7 31.Rd7+ Kxe6 32.Qg4+ Qf5 33.Qxf5#.

Mar-20-10		chrisowen: Bread an' butter for Anand, 24.Bg6 cooks him flat. Stand or deliver there's a good chap. At investigating Bxh7 bottle neck is the king's game. Vis a vis swipe it off and couple it with Qh4+ higher scarred monarch.. Kg6 Rd3 Qh5 Rg3+ Kh6 Qf4+. It remains only to take away the pieces i.e. Rb8 laughedly at rest, a rant over. See Anand's hell bent 21.Bg6!! jamming Lautier. Anand vs Lautier, 1997

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