Showing posts with label Harding. Show all posts
Showing posts with label Harding. Show all posts

Monday, September 22, 2008

Benjamin on the Harding Variation

The September column in Joel Benjamin's excellent 'Ask GM Joel' contains an interesting entry about the Harding variation in the Ruy Lopez Marshall which I discussed in my last July entry. Benjamin seems to agree that a reason why the line isn't played more often may be that Marshall players don't like putting their dark-squared bishop on f6 rather than on d6.

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 d5 9.exd5 Nxd5 10.Nxe5 Nxe5 11.Rxe5 Bb7 12.d4

This is the established mainline and seems to force Black to look for long-term compensation for his pawn rather than the quick kingside attacks which sometimes results from the 11...c6 lines.
12...Qd7 (Dia)

This may transpose to 12...Bf6 lines but must primarily be considered an attempt to play for a kingside attack.

a) 12...Bf6, the mainline to which I will some day return superficially appears less attractive as it generally is associated with a queenside initiative.

b) 12...Nf6!? is suggested by Eric J and gets an additional improvement by Benjamin. Surprisingly no mention is made of the transposition 11...Nf6 (Marshall's original attempt) 12.d4 (White's clearly most popular reaction) 12...Bb7!? (12...Bd6 is almost exclusively played) which leads to the same position without allowing 11.Qf3.

13.Nd2

a) 13.Qh5 Nf6 14.Qf5 Qxf5 15.Rxf5 Be4 16.Rg5 Bd6 17.f4 Rfe8 18.Nd2 Bb7 19.Nf1 Re1 20.Kf2 Rxc1 0–1 Gardner-Harding, corr 1975.

b) 13.h3 looks like a waste of time:

b1) 13...Bf6 seems somewhat inconsistent but sufficient for equality: 14.Re1 Rfe8 15.Bd2 Rxe1+ 16.Qxe1 Re8 17.Qf1 Ne7 18.Na3 c5 19.Rd1 cxd4 20.Be3 Nf5 21.Bxd4 Nxd4 22.cxd4 g6 23.Nc2 a5 = Krnan-Tseitlin, Montreal 2004.

b2) 13...Rfe8 14.Nd2 Bf6 15.Rxe8+ Rxe8 16.Nf3 Qd6 17.Bd2 c5 18.dxc5 Qxc5 19.Qc2 Re2 20.Be3 Rxc2 21.Bxc5 Re2?? (21...Rxb2 =) 22.Rd1+- Granada Velez-Hakimifard, Kemer 2007.

c) 13.Qf3 Rad8 looks like the principal alternative:

c1) 14.Nd2 c5 and now:

c11) 15.Qf5 Bf6 16.Qxd7 Rxd7 17.Re1 cxd4 18.Ne4 dxc3 19.Bxd5 Bxd5 20.Nxf6+ gxf6 21.bxc3 ½–½ Pieris-Sarfati, Dubai 1986.

c12) 15.dxc5 Bf6 16.Re1 Nxc3 17.Qg3 Na4 (17...Rfe8 18.Rxe8+ Qxe8 19.bxc3 Bxc3 20.Rb1 Bxd2 21.Bxd2 Rxd2 = Boguslavsky-Ketterer, Karlsruhe 2003) 18.Bxa4 bxa4 19.Nc4 Qd5 20.Nb6 Qxc5 21.Nxa4 Qc6 22.Nc3 Bh4 23.Qh3 Rd6 24.Bf4 Rf6 25.Ne2 g5 26.Bg3? (26.Rac1 Qb6 =+) 26...Bc8 0–1 Dimitrov-Hebden, Cappelle la Grande 1989.

c2) 14.Qf5 Qxf5 15.Rxf5 Bf6 (15...Rfe8 16.Be3 g6 17.Re5 f6 18.Re4 Kg7 19.Bd2 c5 20.Na3 Nc7 21.Re2 cxd4 22.Rae1 Bf8 23.Rxe8 Nxe8 = Harley-Hebden, Hastings 1988) 16.Bg5 Rfe8 17.Kf1 Bxg5 18.Rxg5 Nf4? (18...h6 or 18...Re7 look quite playable) 19.Bxf7+ Kxf7 20.Rf5+ Kg8 21.Rxf4 +/- Mihailov-O.Moen, Trondheim 2004.

13...Nf4 (Dia)

13...Bf6 still looks inconsistent but didn't work out too badly in Traut-Diaz Vega, corr 2002: 14.Re1 Rae8 15.Rxe8 Rxe8 16.Nf3 Qf5 17.Bc2 Qh5 18.Bd2 += .

14.Ne4 Bd6

This was Black's idea but it doesn't seem very tempting when White simply can capture the bishop. However, the knight on f4 is hanging so there are not many alternatives:

a) 14...Ng6 15.Nc5 Bxc5 16.Rxc5 Rae8 17.Be3 Kh8 18.Rh5 Be4 19.h3 Ne7 20.Re5 +/-Rogers-Djuric, San Bernardino 1988.

b) Benjamin mentions that 14...Nxg2 15.Kxg2 Bf6 16.Qf3 seems insufficient.

15.Nxd6 cxd6 16.Rg5 Ng6 (Dia)

17.Rg3

Benjamin only gives this move and concludes that White is better. 17.Be3 seems at least as strong. Henao-Djuric, Saint John 1988 continued 17...Rae8 18.a4 Be4 19.axb5 axb5 20.Bc2 d5 21.Bxe4 Rxe4 22.Qc2 f5 23.g3 += but it's easier for White to improve than for Black. One relatively obvious try is 20.Qh5.

17...Rae8 18.Bg5 Qf5

Or 18...Be4 19.h4 d5 20.h5 Ne7 21.Bh6 Nf5 22.Qg4 g6 1–0 Conquest-Lane, Cappelle la Grande 1990.

19.Bc2 Be4 20.Bxe4 Rxe4 21.a4 bxa4 22.Rxa4 +/- Kudrin-Hebden, Las Palmas 1989.

Conclusion:

12...Qd7 doesn't seem sufficient to turn 11...Bb7 into an attacking line and Black may as well admit that with 12...Bf6.

Wednesday, July 30, 2008

Marshall - Harding Variation

I note there is a new Everyman book on the Marshall on the horizon. The line has always fascinated me but the necessary preparation does not quite seem worth the effort - in particular because the Anti-Marshall 8.a4 is quite well motivated while 8.h3 and 8.a3 are very reasonable attempts to avoid the sharpest lines.

If I some day decide to take up the Marshall, I will seriously consider to adopt one of the minor lines for my first few games - most likely the 11...Bb7 variation. Here is the first part of an overview which may be a good starting point for serious analysis:

(1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.0–0 Be7 6.Re1 b5 7.Bb3 0–0)

I feel fairly well prepared up to this point after having co-authored 'The Ruy Lopez: A Guide for Black' in 2007.

8.c3

I don't know in how many percent of the games this move is played but I suspect the number is decreasing the lower down the rating ladder you go.

8...d5 9.exd5 Nxd5 10.Nxe5
Nxe5

Also the Herman Steiner variation, 10...e4!? could be a nice surprise weapon.

11.Rxe5
Bb7 (Dia)

This is an active developing move. Its main spokesman has been Harding but it has recently been played by Short and Kamsky. In some ways it's a more natural move than the modern mainline 11...c6. Marshall's original 11...Nf6, I think is now defused and Balogh's 11...Nf4 has never been fully satisfactory. It could however be that 11...Nb6!? is underestimated. The knight isn't very active but it prevents White's important freeing a4 lever.

12.Qf3!?

This has recently been the choice of Sutovsky and Ivanchuk and will be the subject of this post but I assume 12.d4 still must considered the mainline.

12...Bd6!

Thanks to a tactical point this move is playable after all. In the 12.d4 lines we will mainly see this bishop taking up a less threatening post on f6.

13.Bxd5 c6 (Dia)

White must save his rook so Black regains his piece.

14.Re2

This seem to be the most useful post for the rook, but the theory has not yet been cemented and alternatives have been played by strong GMs:

a) 14.Re3 cxd5 15.d4.

b) 14.Re1 cxd5 15.d4 Qc7 16.g3 Rae8 17.Rxe8 Rxe8:

b1) 18.Bd2 a5 19.b3 Qc6 20.a4 bxa4 21.Rxa4 Qb6 22.Qd1 Bc6 =+ A.Timoshenko-Mackintosh, corr 2002.

b2) 18.Be3 b4 19.cxb4 Qc2 20.Nd2 Bxb4 21.Qd1 Rc8 22.Nf3 += A.Sokolov-Yermolinsky, Vilnius 1984.

14...cxd5 15.d4 Qc7 16.g3 (Dia)

White seems a sound pawn up but his queenside is still undeveloped. The alternative 16.h3 Rae8 17.Nd2 b4 18.Nb3 Rxe2 19.Qxe2 bxc3 20.bxc3 Qxc3 21.Be3 Re8 was fairly equal in Szelag-Stern, Poznan 1999.

16...Rae8

16...Rfe8 may well be better. In Sutovsky-Short, Montreal 2007, the rook was useful on the queenside: 17.Be3 a5 18.Nd2 b4 19.Rc1 Qd7 20.Ree1 bxc3 21.Rxc3 Bb4 22.Rc2 Rac8 23.Rec1 Rxc2 24.Rxc2 a4 25.a3 Bxd2 26.Bxd2 ½–½ .

17.Nd2

It's worth noting that Ivanchuck preferred 17.Be3. Yet after 17...a5 18.Nd2 b4 19.cxb4 Bxb4 20.a3 Bd6 21.Ree1 Re6 22.Rac1 Qb6 23.Qd1 Rfe8 chances seemed balanced in Ivanchuk-Kamsky, Montreal 2007.

17...b4 18.cxb4 Qc2 19.Re3 Bc8

19...Bxb4 allowed White to keep a small plus after 20.Nf1 Rxe3 21.Nxe3 Qd3 22.Qd1 Qe4 23.f3 Qe6 24.Qb3 Rc8 25.Kf2 Qb6 26.Bd2 a5 27.Bxb4 axb4 28.Rd1 in A.Sokolov-Kharitonov, Vilnius 1984.

20.Nf1 Bxb4 21.a3 Ba5 22.b4 Bb6 23.Rxe8 Rxe8 24.Be3 Be6 25.Qd1 Rc8 26.Nd2
1/2–1/2 Anand-Short, Manila 1992.

Conclusion:

12.Qf3 shouldn't worry Black if he knows how to keep an initiative burning without a direct kingside attack.