4/22/2024 – It is not very common to have an article focused solely on one specific square. Today, we will make an exception. We will speak about the d5-square, or rather about the weakness that often forms on this square in various lines of the Sicilian defence.
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Black might get a weakness on d5 in any open Sicilian line where he plays …e7-e5: the Sveshnikov, the Najdorf, the Scheveningen and others. Therefore, it is crucial to understand how to live with such a "hole", and how to find out whether this "hole" is a strategical problem or not.
Club players often think that a weak square is always a problem. However, this is simply not true. A keyhole is useless when you don’t have a key that fits into it. Similarly, a weak square in your structure is totally acceptable if your opponent does not have a piece that could benefit from it.
Let us have a look at several examples:
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Unzicker-Fischer, 15th Chess Olympiad 1962, Black to move:
This is one of my favourite positions to test new pupils. Is Black worse, equal, or better? Many club players answer automatically: White is obviously better, look at the hole on d5! In addition, Black has got the "bad" bishop.
In fact, the opposite is true: Black is better. Why? Firstly, and most importantly, the b3-knight is very far from the d5-square. Two squares diagonally are the well-known "long-short distance" for a knight. It takes four moves for him to travel it, even on an empty board.
Obviously, the queens knight gets to from its initial position on b1 to d5 very naturally, in two moves. With the g1-knight, the situation is more complicated. It usually gets developed to f3, and from f3 to d5 it is very far.
Therefore, it is always useful to check the position of white king’s knight. If this piece is far away from d5, usually Black is ok despite the "hole".
In the diagrammed position, White has one additional positional problem: his f-pawn is already on f5. Therefore, e4-pawn might be weak, as well as the white king.
In the game, Fischer played 20…Qa6 and with energic play proved that Black truly is better. He won only six moves later, please don’t miss the lovely finish of the game.
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1.e4c52.Nf3d63.d4cxd44.Nxd4Nf65.Nc3a66.Be2e57.Nb3Be67...Be7Pilnik,H-Fischer,R Mar del Plata 19598.0-0Nbd79.f4Qc710.f5Bc411.a4Be711...Rc8?12.a5Be713.Bxc4Qxc414.Ra4!Qc715.Be3h616.Rf2±Schmid,L-Evans,L Varna ol 196212.Be30-013.a513.g4d5!14.exd514.g5d4!14.Nxd5Nxd515.exd5Nf616.d6?Bxd617.Bxc4Qxc418.Qxd6Qxg4+19.Kh1Qe4+14...Bb415.g5Bxc316.gxf6Bxb217.fxg7Rfd818.Rb1Bc313...b513...h614.g4Nh715.Bf2h2-h414.axb6Nxb615.Bxb6?15.Kh1!Rfc816.Bxb6Qxb617.Bxc4Rxc418.Qe2Rb419.Ra2!Geller,E-Fischer,R Curacao ct 1962h6!20.Rfa1Bf821.Rxa6Rxa622.Rxa6Qb723.Na5Qc724.Nb3Qb7=Zuckerman,B15...Qxb6+16.Kh1Bb5!6, a6-a517.Bxb517.Nxb5axb518.Qd317...axb518.Nd5Nxd519.Qxd5Ra4!a × e420.c3Qa621.h321.Rad1Rc822.Nc1b423.Nd3!?bxc324.bxc3Ra5Tal,M-Fischer,R Curacao ct 196224...Rxc3-+25.Nxe5dxe526.Qxe526.Qd8+Bf8!26...Bb4!27.Qxc3Qxf1+!Kmoch,H21...Rc822.Rfe1h6!23.Kh2Bg524.g3?24.Rad124...Qa7!25.Kg2Ra226.Kf126.Rxa2Qxa227.Re2Rxc3!26...Rxc326...Rxc327.Rxa227.bxc3?Qf2#27...Rf3+28.Ke2Rf2+29.Kd3Qxa230.Ra1Qxb2-+0–1
The position of the white king’s knight was important also in the next example:
Mohr-Gelfand, Portoroz 2001, Black to move:
Again, it might seem that Black is worse. White controls d5. It is not clear what Black can show as a compensation for this fact. However, Gelfand knew better.
Obviously, Black has got one minor piece that can’t fight for d5: the dark-squared bishop. But White has got two idle minor pieces: the dark-squared bishop (because of …h7-h6, the typical Bg5xf6 idea is prevented), but also the f3-knight.
Therefore, Black is equal. He played simply 12...Bxd5 13.Bxd5 Nxd5 14.Qxd5 0-0 and won a nice game.
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1.e4c52.Nf3d63.Bb5+Nd74.d4Ngf65.Nc3cxd46.Qxd4e57.Qd3h68.Be3Be79.0-09.Bc49.a49...a610.Bc4b511.Bb3N11.Bd5Rb812.Ba7Nxd513.Nxd5Rb714.Nxe7Qxe715.Be3Nf616.Nd20-017.Nb3Be618.Na5Rc719.Bd2d520.exd5Bxd50-1 Ye Jiangchuan-Fedorov,A/Belfort FRA 1999 (34)11...Bb711...Nc512.Bxc5dxc513.Qxd8+Bxd814.Bd5!Nxd515.Nxd5f616.c4∞12.Nd512.Nh4?!b413.Qc4d514.Nxd5Nxd515.exd5Rc815...Bxh416.Qxb4Rb817.Ba7∞16.Qe4Bxh417.Qxb4Ba812.a3Rc812...Bxd512...Nc513.Bxc5dxc514.Nxf6+Bxf615.Bd5c416.Qa312...Nxd513.Bxd5Qc714.c4Nf615.Rac113.Bxd5Nxd514.Qxd50-0=14...Rc815.Qb715.Qd315.c4Nf616.Qd3bxc417.Qxc4Qc815...Qc716.Nd2Rac816...Rfc817.Rfc1Qb718.c4Rc619.Rc3Rac820.Rac117.Rfc117.Rac117...Nc517...Qb718.c4Rc619.Rc318.Bxc518.Qd5!?18...Qxc518...dxc519.Nf3c420.Qe2=19.c419.c3d5!19...Rfd820.Rd120.exd5Rfd821.c4Bg522.Ne4bxc423.Qg3Qd419.Nf1Bg519...Bg520.b320.Rc3Bxd220...Qb421.b3Bxd222.Qxd2bxc423.a3=21.Qxd2bxc422.Rac1=20...d5!?20...Rfd8!?∆21.Rd121.Rc3!?21...Bxd222.Rxd2bxc423.Qxc4Qxc424.bxc4Rxc425.f3d526.exd5Rd421.exd5f522.Rd122.cxb5!?Qxc1+23.Rxc1Rxc1+24.Nf1e425.Qe2axb526.Qxb5Rfc827.g3Ra122...e423.Qe2Rce823...b424.Nf1Rce825.d6±24.a324.Nf1f4∞24.Rac1e325.fxe3Bxe3+26.Kh1∞24...e325.Nf125.fxe3?Bxe3+26.Kh1Bd425...bxc426.bxc426.b4exf2+27.Qxf2Qxf2+28.Kxf226...exf2+26...f427.d627.Qxf2Qxc428.Ra2Bd829.d6?29.Qc2!=29...Bb630.Qxb6Qxa231.Qxa6f4?!32.Nd2Qd533.Qc4Rf534.Qc234.Rc134...Re20–1
In the following example arising from the Sveshnikov line, White has got some troubles with his knight again.
Shirov-Kramnik, Linares 2000, Black to move:
Again, the d5-hole truly resembles a keyhole with no fitting key. White’s knight seems to be better placed than in the previous examples, on an empty board its travel to d5 would only take two moves. However, Black succeeded in constructing an interesting cage: his b4 and f4 pawns guard all the roads to d5.
Perhaps White would like to put a bishop to d5. But this is impossible as well. Therefore, d5 is a "no man’s land". Neither side can make any use of it.
Still, Kramnik has decided to make sure that the d5-square will not bother him in the future. He played the creative 20…d5! 21.cxd5 (21.exd5 would give Black a dangerous avalanche in the centre.) 21…Rb6!, and Shirov had a lot to do to avoid getting mated on the kingside (after …Rb6-h6 and …Re8-g8 virtually all Black pieces are directed against the White king).
But White was up to the task and the game ended in a draw.
In the last example, White has done his homework and transferred his king’s knight close to the d5-square. However, against Carlsen, even this might not be enough:
Naiditsch-Carlsen, Grenke Chess Classics 2018, Black to move:
Please note that Black has done his maximum to safely control the d5-square. For example, his b8-knight is on d7 and might either jump to b6, or retake White’s dark squared bishop on f6 after the potential Bc1-g5xf6.
However, White’s control of d5 is also impressive. How to lessen it? The former World Champion found an ingenious manoeuvre. He played: 12...Bg4! 13.f3 Be6.
At the cost of one tempo, he lured the f2 pawn to f3, where it stands in the way of the g2-bishop. Now Black has an advantage in control of the d5-square. And if White pushes f3-f4, that also gives Black some additional attacking targets (the e4-pawn, the Ng4+Qb6 idea…).
After 14.Ne3 Rc8 15.a3 Nb6 Black was totally fine and Carlsen went on to win a convincing game.
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1.e4c52.Nf3d63.d4cxd44.Nxd4Nf65.Nc3a66.g3For some reason, games between Carlsen and Naiditsch tend to be very interesting and complicated. This time, however, Naiditsch aims for a more quiet, positional struggle.e57.Nb3A less played, but still interesting option.7.Nde2is the main move, White plans to improve this knight by means of 5 followed by c3 or h3-g4-3.7...Be78.Bg28.a4a normal move to keep Black's queenside under control, but not a good one in this case, as Black can playNc6! and with the b4-square available to this knight, Black establishes a firm control over d59.Bg2Nb410.Bg5Be611.0-0Rc8Black's development not only protects the important point d5, but exerts pressure against the c-file; 5 is also prevented12.a5Qd7!0-1 Guo,A (2219)-Quintiliano Pinto,R (2451) SPICE Cup Open 2017 (4.18) and Black is fine -13.Ra4?Nxc2!8...0-09.0-0Be6Some recent games proved that9...b5!?is also playable10.Nd5!?10.a4used to be considered favourable for White, but times and evaluations changeb411.Nd5Nxd512.Qxd5Ra713.Be3Be614.Qd3Ra8!?the best way to avoid problems with the a6-pawn under attack in many variations15.f4Qc716.Nd2a5!;0-1 Hou,Y (2652)-Grischuk,A (2750) Moscow FIDE GP 2017 (5) and Black is ok -10...Nxd511.Qxd5Ra712.Be3Be613.Qd2Ra814.a414.Na5!?14...Nc615.axb5axb516.Rxa8Qxa817.Ra1Qb7=½-½ Naiditsch,A (2710)-Vidit,S (2693) ESP-chT CECLUB Honor 2017 (6.2)10.Re1 Preparing the standard manoeuvre 2-f1-e3, typical in such positions.Naiditsch had also played the main move10.a4Nbd710...Nc6?!is not so strong now due to the direct11.Nd5!11.Re1now White goes for the same plan without the queenside expansion for Black, but the time spent on the move a4 allows a good idea. It is nice to remember the line11.a5doesn't really prevent Black's counterplay on the queensideQc712.Re1Rfc813.h3h614.Be3b5!15.axb6Nxb616.Na5Nc417.Nxc4Bxc4=½-½ Leko,P (2740)-Topalov,V (2801) Corus Wijk aan Zee 2006 (13)11...Qc712.Nd2Bd8! a very nice plan, Black is improving his bad bishop and at the same time preventing White from using the d5-square13.Nf1Qc514.Ne3Naiditsch's game went14.h3Ba515.Be3Qc716.Bd2Rac817.Ne31-0 Naiditsch,A (2684)-Sunilduth Lyna,N (2536) Douglas IoM op 2016 (8)Bxc3!18.Bxc3Nc5 and Black is fine, for example19.Nd5?Nxd520.exd5Bd721.a5Na422.Re3f5!14...Ba515.Bd2Rac8½-½ Wei,Y (2706)-Giri,A (2798) Tata Steel-A 78th 2016 (5) and Black had no problems in10...Nbd711.Nd2White had the chance to transpose to the last move's previous lines with11.a411...b5!Although in the positions in which White avoids this move Black is also ok, allowing it looks even worse for me. Black simply has no problems and now has more space and possibilities on the queenside.12.Nf1Bg4!NCarlsen shows excellent understanding of this position, this move provokes weaknesses in the dark squares in White's camp, besides making the 2 (even more) bad.12...Nb6was played by a Najdorf specialist and also gave a nice position to Black13.Ne3b414.Ncd5Nfxd515.exd5Bd716.Bd2a517.a3bxa318.Rxa3a419.Bb4Qb820.c3Bg521.Ra1f50-1 Balogh,C (2648)-Wojtaszek,R (2715) HUN-POL m Budapest 2014 (4.6)13.f313.Qd2looks very unnatural, but it is probably better as White keeps his position untouched, and 3 is coming in the next move, then he will be able to correctly replace the queen.13...Be614.Ne3Rc815.a315.a4!?b416.Ncd5Bxd517.exd517.Nxd5Nxd518.exd5Bg5!is a typical idea, looking to endgames in which the knight will be much superior to the light-squared bishop17...Rc515...Nb6Black has solved the positional problem of d5: White is not able to place his knights there and recapture with a piece, which would be the ideal plan.16.f4!?Necessary to prevent d5.16.Bd2d5!17.exd5Nfxd518.Nexd5Nxd519.Rxe5Bf6 and Black regains the pawn with a better structure20.Re1Qb6+21.Kh1Nxc322.bxc3Bxc323.Bxc3Rxc316...Re816...exf417.gxf4Re8also seems easier for Black due to White's unstable centre.17.Kh1Bf818.f5!Black was ready to take on f4 and exert pressure against White's centre.Bd719.Qd3White should keep an eye on d5. The position remains balanced.19.Bd2Bc620.Rc1d5!is very good for Black.19...h620.b3Against the direct20.Bd2Naiditsch was maybe worried aboutNc420...Bc621.Bd2Qc722.Rac1Qb7Carlsen has improved the queen and is looking for ideas with d6-d5 or pressure against the e4-pawn.23.Ned523.Rcd1Nbd7! would force a similar position to the game24.Ncd5Bxd525.exd5but here Blackalso has the interesting idea25.Nxd5Nxd526.exd5Be7!25...Be7!?23...Bxd524.exd5Nbd7! After the exchange on d5 the kinight is misplaced on b6, so Carlsen hurries to improve it, via c5.25.Nd1 White is also trying to improve his pieces.25.Ne4!?25...e4!?Looking for complications, although Black had another idea which was very good.25...Be7! would be simple and good26.Nf226.Bb4e4!27.Bxe4a5!-+26...Bd827.g4!?Bb6!28.Ne4Nxe429.Bxe4Bf2!30.Re2Bh4 with a pleasant position.26.Qd426.Bxe4??Nc5-+26...Ne5The only continuation that makes sense for Black.26...Qxd5is harmless27.Qxd5Nxd528.Bxe4N5f629.Bb7Rxe1+30.Bxe1Rb831.Bg2=31.Bxa6?Nc527.Nf2?After this move White has problems.27.Nc3!would be better, keeping d5 protectedNf3!28.Bxf3exf329.Rxe8Rxe830.Qf4!a531.b4!31.Qxf3b432.axb4axb433.Na2Ne4!34.Bxb4Qxd535.Rf1Qb731...axb432.axb4Rc8!33.Qxf3Rc4and the position is unclear27...Nf3!28.Bxf3exf3 The d5-pawn hanging forces White to expose his structure even more.29.c4bxc430.bxc4Re5!A very practical and strong move.30...Rxe1+31.Bxe131.Rxe1Qb331...Re832.Kg1Nd7 is also very unpleasant for White.31.Re331.Rxe5?dxe532.Qxe5Bxa3-+31...Rxe331...Rxf532.Qd332.Qxe332.Bxe3Re8with the dangerous threat 333.Qc3Qe734.Re1Black has a beautiful idea hereNe4‼seemingly falling into a trap35.Nxe4Qxe436.Bf2Qxf5!37.Rxe8Qh3! and it is mate38.Qxf3Qf1+39.Bg1Qxf3#32...Qb2!The queen's invasion is very unpleasant and puts White under serious pressure. d5 is already a threat.33.Nd333.Qc3Qa234.Qd334.Kg1Nxd5!35.Qxf3Qxd236.Rd1Qc337.Qxd5Rxc434...Rb8-+ the rook also comes and White can't avoid material losses.33...Qxa334.Qxf3Qa2White's position is collapsing, and the time trouble is just an additional problem.35.Bc335.Qd1is not better:Rxc436.Ra1Qc235...Rxc435...Nd7!?36.Ra1Qb337.Bxf6gxf638.Kg2?38.Qd1!would had offered better chances:Qb539.Nf4a538...Rc339.Rd139.Qg4+Bg740.Nf4doesn't work:Qb2+41.Kh3Qxa142.Nh5Qf1+43.Kh4Rc4-+39...h5!One last touch of precision by the World Champion: 4+ is not possible now.40.Kh3Bh6-+The time control was reached, but it just enough to realise that White's position is hopeless and lost.41.Re141.Qxh5Rxd342.Rxd3Qxd343.Qxh6Qxf5+44.Kg244.Kh4Qg5+!45.Qxg5+fxg5+46.Kxg5a5-+44...Qg545.Qh3Qxd5+46.Kf2Qd4+47.Ke2a5-+the endgame is a simple win for Black.41...Rxd342.Qxh5Re3If 43. 1 g3! A typical strategic win by Carlsen, building a sound position, taking the right opportunity to create some complications that lead to new weaknesses in his opponent's camp, then exploiting them very convincingly.0–1
I hope that after this article, you will look at the holes in your camp a bit differently. It is useful to think of them as of keyholes. Does the opponent have a fitting key? If not, you don’t need to be disturbed by the presence of a weakness in your structure.
Thinking about weak squares less dogmatically will surely improve your strategical understanding. Also, it might help you to lure your more dogmatic opponents into positions that you will evaluate better than them.
Let us learn together how to find the best spot for the queen in the early middlegame, how to navigate this piece around the board, how to time the queen attack, how to decide whether to exchange it or not, and much more!
Jan MarkosJan Markos is a Slovakian chess author, trainer, and grandmaster. His book Under the Surface was the English Chess Federation´s 2018 Book of the Year. His last book, The Secret Ingredient, co-authored with David Navara, focuses on the practical aspects of play, e.g. time-management over the board, how to prepare against a specific opponent, or how to use chess engines during the training process.
Markos was the U16 European Champion twenty years ago. At present he helps his pupils from several countries to achieve similar successes. Apart from focusing on the royal game, he is also the author of several non-chess books, focused on critical thinking, moral dilemmas, and phenomenology.
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