182 ( +1 | -1 ) First off, don't think in terms of moves; think in terms of ideas. If you try to think only in terms of moves, you'll be memorizing theory until the cows come home, not to mention as soon as Black deviates from your memorized lines you'll be stuck.
After 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.0-0 Be7 6.Re1 b5 7.Bb3 0-0 8.c3, Black's point is that in trying to set up pawns on d4 and e4, White has spent a lot of time without much piece development to show for it. Hence 8... d5 to blow the position open while Black has a lead in development. After 9. exd5 Nxd5 10. Nxe5 Nxe5 11. Rxe5, White has his pawn but has not improved upon his slow development. Further, White no longer has any minor pieces defending his kingside and his rook is awkwardly placed on e5. Going further 11... c6 (to defend the d5-knight) 12. d4 (12. d3 is also popular, both moves aim to try to try to catch up in development) Bd6 (exploiting the e5-rook to gain time to develop the bishop to a more active post) 13. Re1 (or 13. Re2) Qh4 14. g3 Qh3.
So White has his pawn, but Black has superior development. White's kingside light squares are weak and he has no minor pieces on the kingside. So White is going to have to defend his king accurately for a while. This means White is going to have to cover his weak light squares and get some pieces over to the kingside to aid in the defense.
Some common maneuvers:
Qf1 (after the rook on e1 moves) to cover the light squares. Black cannot trade queens because he is down a pawn; if he trades, his attack may lose force and he won't have enough compensation for the pawn.
Be3 to seal off the open e-file (Black often posts a rook to e8).
Nb1-d2-f3 to get a minor piece over to defend the kingside.
a4, intending to open the a-file and secure some counterplay on the queenside to offset Black's play on the kingside.
If "grab a pawn and defend" isn't to your taste, you can always duck the entire Marshall Attack with 8. a4 instead of 8. c3.
367 ( +1 | -1 ) I know a little.I have been playing the Marshall for over 10+ years in OTB Chess and have been very happy with the results. I have also been playing Marchall here on GK but have achieved only draws after playing 25+ moves into theory. I have since switched to a different variation in the Ruy Lopez. Point is... you shouldn't have too much trouble against the Marshall IF you take your time.
Please see board #549844 macclassic vs. mercy for what I consider to be the best line against the Marshall. My opponnent played 15.Re4 This move in itself is not all that terrible BUT... it was the Queen manuever Qf3-f6 (16.Qf3 and 21.Qf6) that stopped me dead cold in my tracks. I do not remember ever seeing this manuever before and was convinced that I must have gone wrong somewhere by allowing White to cramp my position in such a way. i quickly dug through my books on the Marshall and to my horror!!!! we were still in theory!! I could not believe it! So, if you are looking for a line... I would reccomend that one.
However... caldazar is correct. it is good to know theory but also try to understand the opening, that way when you are out of "book", you can still find the right moves.
White should try to bring his queenside pieces into the game as quickly as possible as to transfer them to the defense of his vulnerable castled position. A good placement may be Be3 and Nbd2-f3 (or f1). Moving the queen to d3 or f3 is also often played so that the Rooks have an open line to each other. The queen also serves to protect the often weak white squares by Qf3-g2 or Qd3-f1. White will play the best possible order of moves to fit the defensive needs of his position.
White must watch closely for an attack on his d pawn by ...c5 which replying with dxc is hardly an option since any opening up of the position can only favor Black. Due to White's pawn moves (c2-c3, d2-d4, and g2-g3) the squares d3, f3, h3, e2, e4, and g4 often become targets for Black. These squares are especially weak since the light squared Bishop is often stuck over on the queenside. Sometimes Black may try an attacking plan with ...f5 ...Kh8 ...g4 followed by placing the Rooks on the f and g files. White usually can not allow the f5 pawn to advance so f2-f4 is often played but when playing this... keep in mind e3 has been severely weakened!! Rook sacrifices on e3 by Black are often seen.
White often turns his attention (after defense of his King) to Black's Queenside pawn structure. The b5 pawn may be attacked by the a2-a4 advance. This pawn advance (a4) is usually hard for Black to meet. ...bxa and ...b4 leave the c4 square in White's control while doing nothing (...Rb8) allows White to open the a file to his advantage.
There is much much more but I wish not to make this too long to read, especially since caldazar has has already mentioned most of this so... communicate with me via message if you wish to know more or if you have a specific question.
One last thing that should be in White's favor. Black has achieved two advantages right out of the opening (Better development and the Initiative) Good news for White is that those are both short term advantages and also 2 of the most difficult advantages to properly handle. Bad news is if Black knows how to handle these two misunderstood advantages... you may find yourself under an overwhelming attack.
82 ( +1 | -1 ) One important point is that the pawn on c3 prevents White from developing a knight there and weakens the d3 square. In the closed Lopez, this isn't much of a problem, since sustaining a piece on d3 is just a pipe dream, but since Black opens the position in the Marshall, it often forces White to make a d3 or d4 advance right away and lose more time.
Personally, I think it's too easy for Black to obtain a draw or even get some winning chances in the Marshall (compared to other Lopez lines), so I'm currently looking into ways to avoid the Marshall, usually involving a slow d3 and c3 build-up. In that case, Black can play ...d5, but White's pawn is not yet on c3 so he can play Nc3, d3 and such. Black must then play ...d6 to continue development, when playing ...d6-d5 would lose a tempo.
45 ( +1 | -1 ) mercy's drawn gameim sorrry but your game against macclassic was a clasic win, shure, black has the bishop pair and a kingside majority, but look at the activity of whites rook! and the passed pawn! next move has the opportunity of being an even EASYER win with Rb6!, posting the rook on an exelent supported square, and if black exchanges, 2 connected passed pawns! and the knight can always come to b4 to harras the rook and pawn, you really hoodwinked your opponent!
84 ( +1 | -1 ) A win?I am assuming that you mean ...Rb6 in the final position? It is black's move so... 36... Kd7 37.Rb6 is a ?, not a !, since... white will lose a pawn (remember, I am assuming you mean Rb6 on this move?). i.e. 37... Bd8! 38.Rb7 (you are right, the Rook is on a great square but what good is it if the Rook can't stay there?). 38... Kc8 39.Rg7 Bxa5 and black wins the pawn AND... gets himself an outside passed pawn.
If white tries 38.Rxc6 instead, he loses even worse. 38.Rxc6? Kxc6 39.Bc3 (let me know if you find something better) 39... Kb5 40.Ng2 Kc4 and the white pawns will fall 41.Ba1 Be4 42.Ne3 Kd3 43.h3 Bxa5 44.Kf1 Bc7 45.Bb2 Black wins.
Instead of 37.Rb6? 37.Rb7 keeps equality. Macclassic is a very strong player who does not miss much.
I love to analyse, so feel free to point out my mistakes. But... I hope the analysis shows that 37.Rb6 does not win.
33 ( +1 | -1 ) A win? - no!37.Rb6 would be a strong move indeed, but only if black would be forced to exchange rooks with 37....Rxb6. Unfortunately he doesn't have to do this and mercy's analysis is completely right. 37.Rb6 is a winning move for black. After 36....Kd7 37.Rb7+ Kd8 38.Ng2 and so on, the game will not leave the draw area TMHO.
49 ( +1 | -1 ) Rxc6actualy after 36. ,...Kd7 37. Rb6, Bd8 38.Rxc6, Kxc6 39.Bc3, Kb5 40. Kf1, Bxa5 41. Bxa5(loseing the bishop pair), Kxa5 42. Ke2 (the pawn has no chance of queening because the bishop is not of the color of the quenning sqare)..., Bf5(protecting the pawn from queening, not Kb4?? b/c the pawn walks, and Kb5 just waists a tempo) 43. Nd3(keepng the king out of b4) its a bit unclear from here and i want input from you, white should be planning f4 which opens e5 for the knight, i might of made some mistakes so someone should check up on my analisis.
6 ( +1 | -1 ) Simply40... Kc4 is easily winning. If 41. Bb2 then Bxa5 and if 41. Bd2 then Kxd4.