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Very Hot Topic (More than 25 Replies) Alekines Def. - Modern with 4.Nf3 dxe5 (Read 38948 times)
lg
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Re: Alekines Def. - Modern with 4.Nf3 dxe5
Reply #22 - 10/20/09 at 17:59:10
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I had a look at some references, namely J. Cox's book, his analysis here and the CBM survey by Rogozenko.

It appears that Alexander is right.
After 1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3 dxe5 5.Nxe5 c6 6.Bd3 Nd7 7.Nf3 N7f6 8.h3 Nb4
(which as far as I know was firstly proposed by S. Conquest)
9.Bc4 (Be2 appears to be similar) Bf5 10.Ne5 e6 11.Na3 Bd6 with a good game for black.
Anyway, 8 0-0 Bg4 as deeply analysed by Kam seems to be OK for Black.

As far as I remember the crictical line for Black (in Doris Rogozenko's
opinion) is the line
After 1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3 dxe5 5.Nxe5 c6 6.Bd3 Nd7
7. 0-0 where after 7.... Nxe5 8. dxe5 either
i) 8....g6 in the game Sutovsky- Mamedyarov (not particularly liked by John Cox) which lead to a game where Black took some time
for Black to activate the dark bishop (hitting on e5)
ii) 8... Nb4 9. Be4 Qxd1 which according to DR leads to a not easy endgame for Black
iii)8.... Be6 followed by g6, Bg7 was the recent (?! more than 1 year ago) try by N. Short against M.  and Adams and which was ok for Black.

Mironischenko has been playing 7....g7 (instead of Nxe5).
  
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Re: Alekines Def. - Modern with 4.Nf3 dxe5
Reply #21 - 10/11/09 at 00:53:40
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Alexander Karapiperis wrote on 10/10/09 at 21:20:27:
I think guys that after 1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3 dxe5! 5.Nxe5 c6! 6.Bd3 Nd7 7.Nf3 N7f6 8.h3!? Nb4! is quite good in my opinion
e.g. 9.Bc4 Bf5 10.Ne5 e6 11.Na3 Bd6 with a good game for black.

Those exclamation points are the fruit of deep study, are they?
  

The Great Oz has spoken!
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Re: Alekines Def. - Modern with 4.Nf3 dxe5
Reply #20 - 10/10/09 at 21:20:27
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I think guys that after 1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3 dxe5! 5.Nxe5 c6! 6.Bd3 Nd7 7.Nf3 N7f6 8.h3!? Nb4! is quite good in my opinion
e.g. 9.Bc4 Bf5 10.Ne5 e6 11.Na3 Bd6 with a good game for black.
  
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Re: Alekines Def. - Modern with 4.Nf3 dxe5
Reply #19 - 09/29/09 at 19:52:33
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Kam

in your lines,

i) what do you against 6...Bf5 (instead of 6...Nd7)??
two recent and "nice" games on this line are
1 - Cheparinov - Narciso Dublan
White won with two exchange sacrifices and the game followed
a previously well know game between Kasparov and Short.
White deviated (although I do not think White won becasue of this)

2 - Tiviakov- Mironishcenko which is the main defender of the Black
said, nowadays. I nice win for Black.

ii) what do you have against 8. h3 preventing Bg4?
  
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Re: Alekines Def. - Modern with 4.Nf3 dxe5
Reply #18 - 09/29/09 at 05:05:32
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KEY THEMES OF THE 16. Qxc4 Line. (Section B,  Part 1.) Game 2.
1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3 dxe5 5.Nxe5 c6 6.Be2 Nd7 7.Nf3 N7f6
8.0–0 Bg4 9.h3 Bxf3 10.Bxf3 e6 11.c4 Nc7 12.Qb3 Rb8 13.Be3 Bd6
14.d5 cxd5 15.Bxa7 dxc4 16.Qxc4 Ra8 17.Bd4 0–0 18.Nc3 e5 !




Black fights for a bigger share of the centre by advancing the last remaining
central pawn, which also dislodges the white dark square bishop from the
dominating d4 square. The potential lethalness of the white bishop pair is reduced.
     The e6 square is vacant and black has the opportunity to centralize his knight
at c7.  The alternatives  18.... Nfd5 and 18.....Ncd5 seems to have a few problems if
white plays the critical lines. White is able to force and exchange of knights and often black’s e pawn
becomes an isolated d pawn. The white bishop pair becomes  more
difficult to contain as the open space on the board increases.
Black should utilize his king side pawn majority and thus a king side pawn
storm should be strongly considered.
A blockade of the queenside is doomed to fail, because white would
be able to centralize his bishops and attack the kingside and support the
march of the  queenside pawns simultaneously.  The isolated black b pawn has
a key role in the preventing of an  immediate white queenside pawn charge,
but it is also black’s major structural weakness.  Black’s best strategy is to use
this pawn as a bargaining chip for counter-play on the kingside.

19.Be3 Qe7 20.Rfd1 Rfd8 21.Bg5 [21.Bxb7 Rab8 22.Bc6 Rxb2 23.a4 Rb4 !
24.Qe2 Ne6 25.a5 Qc7 26.Qa6 Nc5



White is forced to capture the knight, since evacuation of the queen to e2 would
leave the bishop at c6 unprotected.  27.Bxc5 Bxc5 28.Rxd8+ Qxd8 29.Rd1 Rd4 !
A nice piece of rook manoeuvring enables black equality.] 21...h6 22.Bxf6
I consider 22.Bh4 to be the main line followed by 22...g5
23.Bg3 Rac8! White has three main continutions being 24. Qb3,  24 Qe2 and  
24 Bxb7. These alternatives will be discussed at a later date.
22…. Qxf6 23.Ne4 Qe7 24.Nxd6 Rxd6 25.Rxd6 Qxd6 26.Rc1 Ne6
27.Bxb7 Rb8 28.Bd5 Rxb2 29.Bxe6 fxe6 30.a4 Qd5 31.Qc3 Qd4




Despite the double centre pawns, black has good drawing chances. White
would like to exchange off queens, but not at the cost of transforming the awkward
double pawns into a menacing central pawn roller. 32.Qg3 Ra2 33.Rc8+ Kh7
34.Rc6 Qd7 35.Rb6 e4 36.Rd6 Qe8
 Perhaps best, if black needs to win. Black
could choose 36...Qc7 and the  defensive task becomes greatly reduced, but a
draw is almost unavoidable. 37.Qe5 Rxa4 38.Rxe6 Qf7 39.Re7 Qf8
40.Rb7 Rb4 41.Rd7 Rc4 42.Kh2 Rb4 43.h4 e3 44.Qxe3 Rxh4+ 45.Kg3 Rh5 =


            Any constructive comments or interesting queries are gratefully invited!
  
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Re: Alekines Def. - Modern with 4.Nf3 dxe5
Reply #17 - 08/27/09 at 13:21:43
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To Markovich:
                     Thanks for acknowledging the work, which I have put into the analysis
of this opening. Most of the analysis has been done with the use of the Fritz 7
software.
     I have asked John Watson to have a look at this Alekine system. If there is a
refutation or serious flaw in this opening, I hope he will find it.
     It would be nice to have a game with you to test my analysis, but currently this is
not possible in the near future, because I try to limit my internet usage to about
twelve hours a month and I have other things happening such as replying to other
chess posts and others.
However, I would be very willing to know about how you (or in fact anyone!)  would deviate after the
moves 1.e4 Nf6  2.e5 Nd5  3.d4 d6  4.Nf3 dxe5  5.Nxe5 c6  
6.Be2 Nd7  7.Nf3 N7f6  8.O-O Bg4  9.h3 Bxf3  10. Bxf3 e6
11. c4 Nc7  12. Qb3 Rb8 and we could discuss about some continuations. A friend of mine
at my local chess club in Hobart, Tasmania seems to be very interested in the continuation
13. Be3 Bd6  14.d5 cxd5  15.cxd5  Ncxd5  16. Bxa7 Rc8 etc. Black should be able to equalize and draw,
but any serious winning chances currently seems fairly limited. White however may have the same problem.
  
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Re: Alekines Def. - Modern with 4.Nf3 dxe5
Reply #16 - 08/25/09 at 13:12:32
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Thanks, Kam.  I admire your hard work and your inquisitive spirit.

In general though, I think that playing games on IECG, which is entirely free by the way, are much more useful than "analysis games" between you and your computer.  You'll find that opponents on IECG are fairly good when it comes to pointing out the theoretical weakness of any given line.  You could also try ICC if you could get anyone to play at a sufficiently slow time limit that theory would be likely to be consulted.  

I really don't know what to make of "analysis games," though.  In all fairness, any positions you reach beyond move 18 or so are unlikely to be of any relevance.

Maybe I could be a guinea pig for your ideas if you would care to play me on www.net-chess.com, which is a nice, informal CC site with very simple, anonymous registration procedures.
  

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Re: Alekines Def. - Modern with 4.Nf3 dxe5
Reply #15 - 08/25/09 at 08:33:26
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A NEW APPROACH AGAINST THE MODERN 6) Be2 SYSTEM:
EXCHANGE SACRIFICE AND SOME  FIREWORKS. Section A: Part 1c

44.…h4 (Very tactical is 44….Qc5  45.Qb7 Ne5  46.Qa6+ Kg5  47.Kh2 Qf2  
48.Qb7 Re8  49.Rxh5! Kf6  50.Rh4 Rb8  51.Qd5 Rb1 52.Qd8+ Ke6  53.Qe8+ Kf6 =)
45.Rxh4 Ne3 46.Rh7 Nxg2 47.Qb7 Qe8 48.Qb2+ Kg5 49.Kh2 Nf4 50.gxf4+ Kxf4
51.Qf2+ Ke5 52.Rc7 Rd8 53.Rc2 Kf6 54.Qh4+ Kf7 = Black cannot
escape from the perpetual check, despite the extra pawn advantage. b) 31.Rbd1 e5
32.g4 Nd3 33.gxf5 gxf5 34.Rxd3 cxd3 35.Rxd3 Kg7 36.Rd1 e4 37.Bh5 Qb7  =/Ŧ ]
31...e5 32.Bg2 Nd3 The planting of the knight at d3 further increases the pressure exerted
by the central d4 bishop on the weak b2 and f2 pawns. White’s disgruntled rooks may even
be beginning to suffer from claustrophobia!?



[/b]33.Red1[/b] [33.Rf1? e4 34.b3 c3 35.Re2 b4 36.axb4 Qb5 37.Qd1 Kg7 38.Ra2 Bxf2
39.g4 Bb6 40.Qe2 Qe5 41.gxf5 gxf5 42.Qh5 Nf4 43.Qh4 Ng6 44.Qe1 Bc7 45.Bf3
White is forced to give away the bishop to minimize the weakness of the dark
squares.  45...exf3 46.Qf2 Nf4 47.Qg3+ Kh7 48.Rc2 Rd2 –+  
A black rook on the seventh, some unstoppable passed pawns and white has two
unconnected rooks in awkward defensive positions. What more could black ask for ?



33...e4 34.Kh2 Qb6 35.Re2 [35.Rb1 Bxf2 36.g4 e3 37.Re2 fxg4 38.Qc3 Kg8 39.a4 gxh3
40.Bf3 Qc7+ 41.Kh1 Ne5 42.Rxf2 exf2 43.Qe3 Rd3 44.Qxf2 Nxf3 –+] 35...Bxb2
36.a4 36...bxa4
(Bd4) 37.Qxa4 Rc8 38.Qd7 Qc6 39.Qxc6 Rxc6 40.f3 Be5 !  Black
skilfully prevents white’s bishop and centrally positioned rooks from springing into
immense activity. Black forces 41.exf4 and the positioning of the white pawn at e4
blockades the useful h1-a8 diagonal and the e file. The alternative 41. f4 would allow
the advance of the black e pawn to e4 and further increase black’s advantage.



41.fxe4 f4 42.gxf4 Nxf4 43.Rc2 Nd5+ 44.Kg1 Ne3 Three moves ago the knight
was at d3. I wonder how many people would have noticed that the knight would have
had to follow the knight path Nd3-f4-d5-e3 to get to the square adjacent to d3? I certainly
wouldn’t have! 45.Rf2+ Ke7 46.Rc1 c3 47.Ra2 c2 Black should be able to win from here!
Only one white rook can harass the black king, while in contrast the rook at c1 has the
static role of blockading the black c pawn. The rook at a2 has restricted freedom along
the open “a” file, due to the necessity to guard the b2 square against Bb2.




48.Bf3 Rc3 49.Ra7+ Kf6 50.Ra6+ Kg5 51.Be2 Bd4 52.Kh1 Bc5 53.Rc6 Kf4 54.Bb5
(54. Rxg6? Ba3 -+)  g5 !
Black attempts to overextend white’s defensive resources by creating the threat of a
dangerous passed pawn on the king side to complement the still dangerous  c2 pawn.
The white e4 pawn can now be captured and the active white rook at c6 currently
cannot wander off too far from the c file due to the decisive Ba3.



55.Ba4 (55.Rc8 Kxe4 56.Ba4 Kd3 57.Rd8+ Bd4 58.Rd7 h5 59.Rd8 g4 60.hxg4 hxg4
61.Kh2 Ke4 62.Kg3 Be5+ 63.Kf2 g3+ 64.Ke2 g2 65.Re8 Ng4 66.Rf8 Rc7 67.Rg8 Kf4
68.Rb8 Rc4 69.Rf8+ Kg3 70.Rf3+ Kh4  Black has escaped from all checks and white must
now confront against the immediate threat of Bb2. Note worthy is that the white king cannot
get within attacking distance of the black g2 pawn.



71.Bxc2 Rxc2+ 72.Rxc2 g1Q 73.Ra3 Bf4 74.Rcc3 Qg2+ 75.Kd3 Nf6 76.Kc4 Qd5+
77.Kb4 Bd6+ 78.Ka4 Qa8+ 79.Kb5 Qb7+ 80.Ka5 Qb4+ 81.Ka6 Nd7 82.Rh3+ Kg4
83.Rhb3 Qc4+ 84.Ka7 Qc5+ 85.Kb7 Qc7+ 86.Ka6 Qc6+ 87.Ka5 Bc7+ 88.Kb4 Qc5+
89.Ka4 Qa5#) 55...Ke5 56.Ra6 (56.Rxh6 Ba3 57.Rxc2 Nxc2 58.Rh5 Kf4 59.Kg2 Ne3+
60.Kf2 Bc5 61.Ke2 Ra3 62.Bb5 Ra5 63.Be8  [63.h4 Rxb5 64.hxg5 Kxe4 –+] 63...Ra2+
64.Kd3 Bb4 -+
White cannot prevent the eventual enigmatic Rd2 mate of the king in the centre.



56….h5 57.Ra8 Kxe4 58.Re8+ Kd3 59.Rd8+ Bd4 60.Bxc2+ Nxc2 61.Rd5 h4
62.Kh2 Rc4 63.Rb1 Ne3 64.Rxg5 Rc2+ 65.Kh1 Rf2 66.Rb3+ Ke2 67.Rh5 Nf1 -+

White cannot avoid Rh2 mate. The bishop is strategically placed at d4 to fend off any
effective rook checks.



One could argue, that charging pawns requires precise calculating and anticipating against white’s attempts to undermine blacks pawn structure, but wasn’t it fun?!
       My analysis currently shows that with the correct defensive set up 11….Nc7 black
can play with style. The 16 Qa4+ system seems not to provide black too many problems and
it may be white, who is struggling to avoid defeat!  Some of the continuations from the
analysed variations may be considered over extended, since improvements on both sides
are likely to be found. However, I believe that they are representative of type of games
black can expect to encounter. Black should be looking forward to playing exciting and interesting games.
The alternative 16. Qxc5 is more critical, but I feel black can still cause white
problems and good exciting games can be a strong possibility. Currently, I
have analysed the other  key continuations, and all of the encountered “bugs” in
the system have been able to iron out. I guess there will always be bugs in the
system, and the question is whether the antidote can be found during over the board play.
     All constructive comments are welcome.
  
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Re: Alekines Def. - Modern with 4.Nf3 dxe5
Reply #14 - 08/25/09 at 08:28:37
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A NEW APPROACH AGAINST THE MODERN 6) Be2 SYSTEM:
EXCHANGE SACRIFICE AND SOME  FIREWORKS.      Section A: Part 1b

Analysis Game 1:
1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3 dxe5 5.Nxe5 c6 6.Be2 Nd7 7.Nf3 N7f6 8.0–0 Bg4
9.h3 Bxf3 10.Bxf3 e6 11.c4 Nc7 12.Qb3 Rb8 13.Be3 Bd6
After white has played 13) Be3,
black must develop the dark square bishop to d6. The e7 square is reserved for the king or queen, depending on what white plays.
However, if white decides to development of the queen knight to c3 before playing Be3, black
must develop the king bishop to e7.
14.d5  The black king is uncastled and the immediate charge through the centre is certainly
worth investigating. White can also choose the alternative 14) Nc3, which is most likely  to transpose to the 12) Nc3 line.  14….cxd5 15.Bxa7 White may extract a slight advantage
with 15. cxd5 and a possible continuation is  15…. Ncxd5  16. Bxa7 Rc8  17. Qxb7 O-O  
18.Nc3 (Section C of this opening and this will be discussed at a later date.)
Black has two playable options being
18…. Rc7 19. Qa6 Nxc3 20. bxc3 Rxc3 etc.  or 18…. Nxc3  19.bxc3 Qa5 etc.  15…. dxc4
Black decides to challenge the stable position of the queen at b3.
The desired imbalance in the position has been achieved. A symmetrical pawn structure would
tend to favour the bishop pair.



16.Qa4+   White attempts to refute this variation outright. The major alternative is 16) Qxc4 which leads to an interesting
positional struggle.  16…. b5 17.Bc6+ Ke7 18.Qc2 Na6  An interesting
alternative for black 18...Ra8 19.Bxa8 Qxa8 20.Bd4 Nfd5 21.Rd1 Nf4 22.f3 Nd3
23.Nc3 e5 24.Be3 Nd5 25.Nxd5+ Qxd5 26.a4 Ra8 27.axb5 Rxa1 28.Rxa1 Qxb5 29.Ra4 Nxb2 30.Ra8 Nd3 31.Rc8 Qa5 32.Qd1 f5 33.Qb1 Qa6 =/Ŧ
After playing h6, the king should be able to find a safe haven on the king side.
Black will be able to prepare e4 and thus burden white the task of stopping two passed pawns.



19.Bxb8 [19.Qe2 White decides to centralise the queen before accepting the exchange sacrifice. 19...Qc7 20.Bxb8 Rxb8 21.Bf3 Nc5 22.Nc3 Bh2+ 23.Kh1 Be5 24.Ne4 Ncxe4 25.Bxe4 Bd4 26.Bf3
Qe5 27.Qd2 c3 28.Qd3 cxb2 29.Rad1 Rd8 30.Rfe1 Qc7 31.Qxb5 Qb6 =  An immediate
exchange of queens would favour black. An important observation is that the white isolated “a”
pawn is quite vulnerable and it has limited protection options, because the rooks cannot occupy the usually available a1 square, which is attacked by the black b2 pawn.



19...Qxb8 Black has only a bishop and pawn for the rook, but also a positional
initiative. Opposite coloured square bishops are another bonus for black because such an imbalance are known to favour the attacking force. 20.a3  An important alternative is
20. Qe2,which could continue as  20. …Nb4  21. Bf3 Rd8  22. Nc3 Nd3  23. Ne4 Bh2+  
24. Kh1 Be5  25. Nxf6 Bxf6  26. Rad1 Nxb2 27. Rxd8 Qxd8  28.Qe4 Qd5! Ŧ  White must decentralize the queen in order to avoid the exchange of queens, because the black queen
side pawns are too advanced.  Black is also threatening an attacking formation comprising
of  Qc5, Bd4 and Nd3. It will be very difficult to protect the weak f2 pawn, prevent the
threats associated with Nf2+ and fend off the black c pawn.




20….Rc8 21.Bf3 Nc5 22.Nc3 Bh2+ 23.Kh1 Be5 24.Rab1 The rook shuffle does prevent
black from easily regaining material equality. Black is forced to attack in other sectors of the board or lose the initiative.
         In the actual text game, some interesting positional middle game technique is observed where black attacks through the centre and successfully storms white’s king side. Eventually a white rook does grab a file, but it is too late and black has a won position.
24….Kf8 25.Rfd1 h6 26.Ne4 Nfxe4 27.Bxe4 f5 28.Bf3 Rd8  Black’s intention is not to
provoke an exchange of heavy artillery along the central corridor, but to support the repositioning of the dark square bishop to d4 and the advance of the e pawn to e4.



29.g3 a)29.Qe2 Bd4 30.Rd2 e5 31.Rbd1 Nd3 32.Rxd3 cxd3 33.Qxd3 e4 34.Qd2 Kf7
35.Be2 Bb6 36.Bh5+ g6 37.Qxh6 Rxd1+ 38.Bxd1 Bxf2 39.Qd2 Qb6 40.Be2 Qd4
41.Qf4 Kf6 42.h4 b4 43.axb4 Be3 44.Qb8 Kg7 45.Kh2 Qxb2 46.Bc4 Bd4 47.Qc7+ Kh6
48.Qf4+ Kh7 49.Qc7+ Bg7 50.b5 Qf2 51.h5 Kh6 Ŧ White must now exchange off queens
with 52. Qg3 or fall into a mating net involving Qh4+. After the queen exchange, black will
win the h pawn and the three connected king side pawns will be too strong for white.



b) 29.Rxd8+ (A fairly natural continuation and perhaps the best alternative for white)
Qxd8 30.Rd1 Nd3  31.Kg1 Bd4  32.Kf1 Qf6 (The grandiose central pawn charge
32…. e5 fails to 33.b3 e4  34.bxc4 Qc7
35.c5 Qxc5  36.Qxc5+ Bxc5  37.Be2 Bxa3 38.Bxd3 exd3  39.Rxd3 b4  40.Rd5±)
33.b3 Qh4  34.bxc4 bxc4  35.Rd2 Qf4 36. Bc6 Qh2  37.Rxd3  White relinquishes the
material gain at an appropriate time, in order to nullify the opponents attack. Black must
be vigilant against white’s previous move, which is a good example of an important
tactic encountered against a sacrifice. White even threatens to seize the initiative
against inaccurate play. 37….cxd3  38.Qxd3 Qf4 39. Bf3 Qc1+  40.Bd1 Qc5  
41.Bb3 Qxa3  42.Qc4 Qd6 43.Qxe6 Qxe6 44.Bxe6 =] 29...Bd4 30.Rd2 g6 31.Re1
[a) 31.a4 ! 31...Nxa4 (31...e5 32.axb5 Qxb5 33.Rbd1 Nb3 34.Re2 Kg7 35.Bg2 Re8


36.Bf1 Ra8 37.Rde1 Ra2 38.Qb1 Qa5 39.Rd1 Qa8+ 40.Kh2 e4 41.Qc2 Qa4
42.Rxd4 Nxd4 43.Qc3 Qd1 44.Re3 Kh7 45.Qxc4 Ra7 46.Ra3 Rg7 47.b4 Nf3+
48.Kg2 Nd2 49.Qb5 Nxf1 50.Qxf1 Qd5 51.Rc3 f4 !  Black’s king side pawn
offensive is looking very threatening due to the attack of the white king and the possibility
of promotion of the e pawn. White certainly cannot allocate the next four moves to promoting
of the outside passed b pawn and in fact even one is disasterous.



52.gxf4 {52.b5? e3+ 53.Kg1 Qd2  54. Rc1 e2  55. Qe1 Qxe1+ 56.Rxe1 f3 57.Kh2  Rd7
flashy -+ or Rb7 systematic -+} 52… g5 53.f5 g4 54.f6 gxh3+ 55.Kh1 Rg6 56.f3 Qd6
57.Qc1 Qxf6 58.fxe4 Qf2 59.Rc7+ Kg8 60.Qc4+ Kh8 61.Rc8+ Kh7= An interesting
game ending via a perpetual check.) 32.b3 Nb6 33.bxc4 bxc4 34.Bg2 Kg7 35.Rbd1 e5
36.f4 c3 37.Rd3 Nc4 38.Rb1 Qd6 39.Rb7+ Kf6 40.Rxc3 Bxc3 41.Qxc3 Rc8 42.Rh7 h5
43.fxe5+ Qxe5 44.Qb4!  Black has a slight initiative, but surprisingly many of black’s next
move possibilities are fatal. The knight is unable to move due to Qh4+ +- and the back
rank must be protected against Qf8+ +-. White is threatening to place the queen on the
seventh rank and attack the black king from behind.


  
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Re: Alekines Def. - Modern with 4.Nf3 dxe5
Reply #13 - 08/25/09 at 07:33:22
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A NEW APPROACH AGAINST THE MODERN 6) Be2 SYSTEM:
EXCHANGE SACRIFICE AND SOME  FIREWORKS. Section A: Part 1a                  

INTRODUCTION:

The first moves of the Alekine Modern 6.Be2 system is as follows:

1.e4 Nf6  2. e5 Nd5  3.d4 d6  4.Nf3 dxe5  5.Nxe5 c6  6. Be2

     The system involving 6… Nd7 has been previously played by Mamedyarov, Miles
and others. A possible continuation is  7. Nf3 g6  8. c4 Nc7  9. Nc3 Bg7 10. O-O O-O etc.

7.…. N7f6  8. O-O Bg4  9. h3 Bxf3  10. Bxf3 e6  11. c4 Nb6 has been previously played as
with Karjakin, S – Carlsen, M/Nice FRA 2008.

     I am currently investigating the alternative 11…Nc7 and without the fianchetto of the
king bishop. This line is very rich in strategic ideas and seems to provide black with good
winning chances. The opening  involves a pawn structure similar to the main line Caro Kan.
      White’s most logical continuation is 12.Qb3 Rb8.  The rook shuffle to b8 does seem a
bit suspicious, but it may be played in the absence of Qb3 regardless at a later stage of
the game in order to support the b5 advance.

There seems to be six key continuations after 12.Qb3 Rb8 and are as follows:

a) 13. Be3 Bd6  14. d5 cxd5  15. Bxa7 dxc4 16. Qa4+ b5 17. Bc6+ Ke7
        (Early d5 system involving 15... dxc4  16. Qa4+ b5)

b) 13.Be3 Bd6  14. d5 cxd5 15. Bxa7 dxc4 16) Qxc4
        (Early d5 system involving 15…dxc4  16. Qxc4)

c)  13. Be3 Bd6  14. d5 cxd5  15. cxd5 Ncxd5  16) Bxa7 Rc8


d) 13.Nc3 Be7  14.Be3 O-O  15.d5 exd5  16. cxd5 c5

e) 13.Nc3 Be7  14) Bf4 O-O  15. Rad1 Bd6  16. Bg5 h6  17. Bh4 Be7

f) 13.Nc3 Be7  14.Bf4 O-O  15. c5 Qc8!


     The first line is the main focus of this discussion and it is an attempt to refute the
8... Nc7 system outright. An exchange sacrifice is required to save black, but white is forced
to hold back a flood of aggressive pawns. The Alekine modern is not renown for exciting
exchange sacrifices and strategic advancing of the black queenside pawns. This could be
an exception! An analysis of a fictitious game with annotations of this line is as follows
in the next section of this article.
  
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Re: Alekines Def. - Modern with 4.Nf3 dxe5
Reply #12 - 06/19/09 at 09:10:49
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I wonder if the mistake was 8...Be6. This move seems ok followed
up with g6, Bg7 and kingside castle.
Or you play 8...g6 (note that 9 Bxd5 fails to Qa5+) and decide later where to put the bishop).
After 8...Be6, you might also think about
playing Nc7 intending to exchange the two bishops on e6.
Playing Qd7 seems also interesting.
Engines also suggest 8... e6 which does not look atractive to me.
8...Qb6 might also be worth examining.

  
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Re: Alekines Def. - Modern with 4.Nf3 dxe5
Reply #11 - 06/17/09 at 22:11:11
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I (as Black) recently faced this.
1 e4 Nf6 2 e5 Nd5 3 d4 d6 4 Nf3 dxe5 5 Nxe5 c6 6 Bc4 Nd7 7 Nxd7 Bxd7 8 Qf3

I played 8 ... Be6 but my development got clogged up. Is there a better 8th move?
  
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Re: Alekines Def. - Modern with 4.Nf3 dxe5
Reply #10 - 05/31/09 at 16:01:04
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Kam

your analysis looks quite interesting and worth studying

I wonder whether Black would not be better by transposing to the
Kengis after (as Svidler did in a recent rapid game)
1. e4 Nf6   2. e5 Nd5   3. d4 d6  4. Nf3 dxe5  5. Nxe5 c6  6. Bc4
by playing 6. ... g6

I think (there was ome discussion on this a few weeks ago that
after

1. e4 Nf6   2. e5 Nd5   3. d4 d6  4. Nf3 dxe5  5. Nxe5 g6 (the Kengis)
Black was doing well with  6. Bc4 (thus the transposition) and not so
well with 6. c4.

Going back to the Miles move order

1. e4 Nf6   2. e5 Nd5   3. d4 d6  4. Nf3 dxe5  5. Nxe5 c6

I wonder what you think about 6. Bd3 (according to Dorian Rogozenko in CBM 123 the critical line for Black) and after 6... Nd7 he recommends 8. 00 as slightly better for White (and in fact, he says
that this is the only line that appears to be "slightly" complicated for Black)

6. Be2 also looks worth studying, namely the tactics after 6....Bf5 7. g4.

In my opinion, Black appears to be doing Ok with the Miles or some
hybrid Miles/Kengis and I think the ball is on White's side.



  
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Re: Alekines Def. - Modern with 4.Nf3 dxe5
Reply #9 - 05/31/09 at 11:43:58
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INVESTIGATING AN IMPORTANT SIDELINE OF THE MODERN.

This hypothetical game is relevant to the current developments of the Alekine modern and it shows how black can utilize the pawn storm theme.

1. e4 Nf6   2. e5 Nd5   3. d4 d6  4. Nf3 dxe5  5. Nxe5 c6  6. Bc4 Nd7  7. Nf3 (7.O-O Nxe5 8. dxe5 Be6  9. Bb3 g6  10. Qe2 Bg7  11. Nd2 Nf4 12. Qe4 Qd4!=  Popilski, G – Raznikov, D, Kemer, Turkey 2007)  7…N7f6  8. 0-0 (h3) Bg4  9. h3 Bxf3  10. Qxf3 Nb6  11. Qd3 Nxc4  12. Qxc4  e6 Black is known to play 12…. Qd5 followed by 13. Qxd5 cxd5 and black has an even game, but it very difficult to generate exciting positions and win the game! 13. Bf4 (13. Nc3 is playable and may be discussed at another time.) 13…. Qa5!  A very enterprising line.





14. Qd3 (14.Be5 O-O-O  15.c3 Bd6!
16. f4?! Nd5  17. Bxg7? Rhg8  18. b4 Qa4
19. Bh6 Rxg2+  20. Kxg2 (21.Kh1 Qc2-+)
Ne3+ -+  However white’s continuation can certainly be improved after black has castled) O-O-O  15. Nd2 Qf5  16. Qxf5 exf5




17. Bg5  (17. Nf3 Ne4  18. Rfe1 Be7  19. Re2 g5  20. Bh2 h5  21. c3 Bf6  22. Rae1 Rhg8 23. Ne5 Bxe5  24. Bxe5 f6  25. Bh2 g4
Attacking pawns can be seen to function at two different strategic levels which are a) breaking down of whites defensive pawn barrier and assisting in checkmating of the king and b) Disrupting the co-ordination of the white pieces by participating as passed pawns and potential queens via promotion.






26. Re3 c5  27. hxg4 hxg4  28. dxc5 Rd2
29. R3e2 Rd7  30. Bd6 Rh7  31. Rxe4 (31. Re3 Rgh8  32. Kf1 Rh1+  33.Ke2 Rxe1+ 34. Kxe1 Rh1+  35. Ke2 Rb1  36. b3 Rb2  37. Ke1 Rxa2  38. f3 Nxd6  39. cxd6 Kd7 Ŧ)






17….Rxd4  18. Nf3 Rd6  19. Ne5 Ne4  20. Nxf7 Nxg5  21. Nxh8 Rd2  22. f4 Bc5+  23. Kh2 Ne4 24. Nf7 (24. Rac1 Bf2  25. Nf7 Re2 26. a3 Kc7 is certainly worth investigating. Black is the exchange down, but does have the initiative.) 24. ... Rxc2  25. b3

25….Bf2  26. Ng5 Bg3+  27. Kh1 Nxg5  28. fxg5 f4  29. Kg1 Rc5 30. Rad1 Rxg5  31. Rd2 Re5  32. Rfd1 h5  33. Kf1 g5  34. Re2 Rc5 35. Re8+ Kc7  36. Re7+ Kb6  37. Rdd7 Rc2  38. Rxb7 Kc5  39. Rxa7 g4 40. hxg4 hxg4  41. Rg7 Rf2+  42. Kg1 Re2  43. Rae7 Rb2  44. Kf1 Kd4




45. Rd7+ (45.Rxg4? Rb1+  46. Ke2 Re1+ -+)
Kc3  46. Rd1 (46. Rxg4? Rb1+  47. Ke2 Re1+
48. Kf3 Re3#) Rf2+  47. Kg1 Rxa2  48. Kf1 Rc2  49. Rb1 c5  50. b4 Rf2+
51. Kg1 c4  52. b5 Rd2  53. Kf1 Kc2  54. Ra1 Rd6  55. Re7 f3!
 






56. gxf3 gxf3 57. Re3 Kb2  58. Rea3 c3  59. R1a2+  Kb1  60. Ra1+ Kc2  61. Rc1+ Kxc1
62. Rxc3+ Kd2  63. Rxc3+ Kd2  63.Rxf3 Rg6  
Black should be able to attain a R+B v R position, but white should be able to draw with best play!
     Black gets a very comfortable game to such an extent, that if white wants to apply some serious pressure, the system involving  8.O-O Bg4  9. h3 Bxf3  10.Qxf3 Nb6 etc seems not the way to do it!
     The line 8.O-O Bg4  9. h3 Bxf3  10.Qxf3 Nb6 11. Qd3 Nxc4  12.Qxc4 is not mentioned in the John Watson  B04  1.e4 Chess Pub Guide  15.11.2008,
but 8. h3 is mentioned. Currently, white side steps the above variation by playing the main lines, which are 1) Playing  8. h3 Bf5 9.0-0 etc or deviating earlier with 6. Be2 Nd7  7. Nf3 etc.
White was able to survive the mating threats associated with the pawn storm, but the capture of black’s passed pawn and the protection of the queen side pawns could
not be satisfactorily achieved, white was lucky to draw.

     Everything after 12. …e6 is speculative and I would like to receive any constructive comments.

     I wish to publicly thank Willempie for showing me how to incorporate chess diagrams into the posts.


  
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Re: Alekines Def. - Modern with 4.Nf3 dxe5
Reply #8 - 05/20/09 at 15:18:48
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To my previous question

"why there are so few grandmasters playing the Alekhine and so many playing the Gruenfeld"?

there is one obvious answer

"that is why they are grandmasters and you are not !"

However, if someone feels that the answer might be more tricky or
interesting, let me know
  
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