2/12/2020 – ChessBase offers a window to the world of professional chess. Our thoughtful columnist NAGESH HAVANUR reviews issue #193 which offers a bird’s eye view of three major events, the FIDE Grand Swiss / chess.com IOM Open, European Team championship and World Chess Grand Prix in Hamburg. 1618 games, 11 opening surveys, demo lectures and exercises for training. Games annotated by Fabiano Caruana, Wang Hao and Peter Heine Nielsen, to mention a few. | Photo: Nadja Wittmann
Tata Steel 2023: Analyses by Giri, Van Foreest, Praggnanandhaa, Donchenko and many more. "Special" on Anthony Miles. Kasimdzhanov, Marin and Zwirs show new opening ideas from Wijk in the video. 11 opening articles with repertoire ideas and much more!
Analyses by Caruana, Giri, Duda, Wang Hao, So, Vidit, Vitiugov, McShane and many more. Plus videos by Williams, King and Shirov. 11 opening articles with new repertoire ideas and training sessions in strategy, tactics and endgame!
In chess as in life it’s more important to ask deep and searching questions than to find pat answers. A young player wants to know how a game is won. An old player wants to know why how it is lost. The second bit is not easy to come by as the loser does not tell you what went wrong, especially in the opening. He would rather wait for another chance with the same opponent.
When you see a good game, applaud the winner by all means, but do try to see what lay behind the defeat. The results can be rewarding. This is what I discovered while I was checking out the current issue of ChessBase Magazine. Among other things it offers games from three major events, Hamburg FIDE Grand Prix, Isle of Man Open and European Team Championship.
MVL explains
First, we start with the Hamburg Grand Prix as it’s a qualifying event for the Candidates’.
When I looked at the Grischuk-MVL mini-match from the Semi-finals, I was baffled. In the first game MVL was White and only drew in 27 moves. There was no attempt at initiative, let alone attack. In the second game with Black he was outplayed.
But what prevented him from going for more in the first game? Finally, I found the answer in a post on his blog:
With white, I was surprised by his choice of the Arkhangelsk Spanish. As a result, I hesitated between 13.♗c2 and the resulting ton of theory, and 13.♗e3, which is less risky. I chose the latter and got a very small plus, but I started making small miscalculations…
Vachier-Lagrave vs Grischuk, Semi-final Game 1
Position after 22...♝c5
Especially when here I played 23.♗a4?! and instantly noticed that I was allowing 23…♞d5!. What Sasha and I both missed is that after 24.♘c6, black doesn’t only have 24…♛h4 25.g3, but also 24…♛f6! 25.♕xd5 ♛xf4, and the position turns in his favor. So, while Sasha was thinking, I had decided, in case of 23…♞d5, to go for 24.♕f3 with a slight advantage for black. Maybe if I had focused a little more on the position, I would have chosen 23.♗a2 with the idea, ♕d2-♖ad1, and a microplus for white. The rest of the game was a quick path towards the draw (1/2, 27 moves).”
Here is the game and I have inserted a little commentary for readers unfamiliar with opening theory.
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1.e4e52.Nf3Nc63.Bb5a64.Ba4Nf65.0-0b5The Archangel Variation
with which Black aims for sharp piece play.6.Bb3Bc56...Bb7is the
older line in this variation6...Be7leads to the Main Line of the
Spanish.7.c37.Nxe5Nxe58.d4Bxd49.Qxd4d6is known to be harmless.7...d6Black still retains the option of developing the other bishop to b7
or g4.8.a4From now on the pawn on b5 is under pressure.8.d4Bb69.a4Rb8transposes to the line in the game.8...Rb89.d4Bb610.axb5axb511.Na30-012.Nxb5This is the critical position and it has been debated for
more than 20 years. White wins a pawn on the queenside. However, his own
centre pawns are under threat.Bg412...exd413.cxd4Bg414.Ba4guards
the knight and also targets the rook if it comes to e8.Not12...Nxe4??13.Bd5+-13.Be3MVL writes, he opted for this safer lineinstead of13.Bc2with tons of theory.13...exd414.cxd4Nxe415.h315.Bd5Qe816.h316.Nc316...Bf515...Bf515...Bd716.Nc3h617.Bd5Nxc318.bxc3Ne719.Bb3c520.Re120.dxc5Bxc520...cxd421.Nxd4Bg622.Bf4Bc523.Ba4?!Subsequently MVL thought, he should have played23.Ba2
with a slight plus.23...Rb2"Instantly I noticed that I was allowing23...Nd5!and decided to go for24.Qf3with a slight advantage for
Black" -MVLSasha saw only24.Nc6Qh4missing24...Qf6!25.Qxd525.Nxb8Qxf426.Rf1Nxc327.Qb3Ne2+28.Kh1d529.Nc6Bd630.g3Be4+25...Qxf425.g324.Qf3Now the game peters out to a draw.Bxd425.cxd4Nf526.Be3Nxe327.Qxe3MVL's comments are from his blog.½–½
The aim of these Dvd's is to build a repertoire after 1.c4 and 2.g3 for White. The first DVD includes the systems 1...e5, the Dutch and Indian setups. The second DVD includes the systems with 1...c5, 1...c6 and 1...e6.
Semi-final Game 1 | World Chess on YouTube
Where MVL and Krasenkow concur and differ
The second game is comprehensively annotated by Michal Krasenkow in this issue. I compared it with MVL’s own analysis. Krasenkow is thorough and, in places, more objective than MVL. But if you want to see what went on in MVL’s mind, you need to check out his words. Here I have done both and offered my own commentary:
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1.e4
1,170,319
54%
2421
---
1.d4
949,867
55%
2434
---
1.Nf3
282,628
56%
2440
---
1.c4
182,731
56%
2442
---
1.g3
19,745
56%
2427
---
1.b3
14,347
54%
2427
---
1.f4
5,917
48%
2377
---
1.Nc3
3,816
51%
2384
---
1.b4
1,759
48%
2379
---
1.a3
1,222
54%
2404
---
1.e3
1,073
49%
2409
---
1.d3
955
50%
2378
---
1.g4
666
46%
2361
---
1.h4
449
53%
2374
---
1.c3
435
51%
2426
---
1.h3
283
56%
2419
---
1.a4
114
60%
2465
---
1.f3
93
46%
2435
---
1.Nh3
90
66%
2505
---
1.Na3
42
62%
2482
---
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1.Nf3Nf62.c4c5The English Opening.3.Nc3d54.cxd5Nxd55.e3e6
MVL had quite a few unhappy experiences with5...Nxc3losing to Radjabov
and Wesley So months before this game. He decided not to play it any more.6.Bc46.d4Nc6leads to the Semi-Tarrasch Defence.6...Be77.0-00-08.Qe2Nc69.Rd1b610.d4Thus we have reached the Semi-Tarrasch by
transposition.Nxc311.bxc3Qc712.e4Rd8As the subsequent course of the
game shows, this move does not turn out very well and may be the cause of his
misfortunes.During the game MVL considered12...Bb713.d5exd514.Bxd5Rad815.c4and did not like the position.Instead he could have tried12...Na513.Bd3Bb7=13.Be3After13.d5he had preparedNa514.Bd3c415.Bc2e5!?13...Na514.Bd3Bb715.h4!It is only now that MVL
realized his position had become unpleasant. So he initiated active counter
play withb5!?15...a6preparing 16...b5 appears too slow on account of16.h516.Bxb5Bxe4After this move MVL was concerned about 17. Ng5.17.dxc5This move took him by surprise and he reacted badly with the inopportuneAs MVL learnt later, Grischuk did not play17.Ng5on account ofcxd418.cxd4a6Indeed, after19.Rac1Qb720.Bd3Bxd321.Qxd3g6the Black
knight is ready to return to c6 and the pressure on the d-pawn is a cause of
concern for White.17...Bxf3?He did think about17...Bxc518.Rxd8+Rxd819.Bg5Rb820.Qxe4Rxb521.Rd1and the position looked suspicious to
him.18.Qxf3Bxc519.Bf4"We both missed19.Bg5!Be720.Rd7
The refutation.Rxd721.Bxd7Rb822.Bxe7Qxd723.Qg3In the DVD here
Krasenkow gives23.Bf6without further analysis. There may followQd624.Rd1Qf825.Qg3Nc626.Rd7±23...Nc624.Bf6g625.Qf4with great
danger on black squares" -MVL19...Qb720.Qe2Qe721.h5Bd622.Bxd6Rxd623.Rxd6Qxd624.Rd1Qc525.Rd7The rook dominates the d-file and occupies
the 7th rank. The queen and the bishop contol light squares. In contrast the
Black knight remains out of play and there is little co-ordination between his
pieces.Qxc326.Qd1?A routine move, doubling up heavy pieces on an open
file.Krasenkow gives26.Qe4!Qc1+26...Rf827.h6Qc1+28.Bf1Qxh629.Rxa7Qh530.Qa4+-27.Bf1Grischuk had only calculated27.Kh2?Rf828.Rxa7Qc5!attacking as many as four pieces.27...Qc628.Qd4h629.Rd8+Kh730.Bd3+f531.Rd7Rg832.Rxa7+-26...h627.g3Rf8?
This defensive move reduces Black to a passive position.Krasenkow makes a
fine suggestion.27...Rb8!?28.a4Nb7!If29.Qg4Nc530.Rxa7Qa1+31.Bf1Not31.Kg2?Rxb5!32.Qf4!Rb733.Rxb7Nxb734.Qb8+Kh735.Qxb7Qxa436.Qxf7Qc4=31...Rb1=28.Rxa7Nc629.Rd7Ne530.Rd8Qc7MVL did not want30...Rxd831.Qxd8+Kh7as it left the king in the
corner without any participation in play.31.Rxf8+Kxf832.a4Ke733.Be2Qc334.Qb1Nc635.Qb7+Kf636.Bf1Na537.Qd7g538.hxg6Kxg639.Kg2Kg740.Bb5Qe541.Qd3Qc542.Qf3Qd4Not42...Qe7?43.Qc3++-If42...Qb443.Be8Qb743...Qe7?44.Bxf7Qxf745.Qc3++-44.Qxb7Nxb745.Bc6±43.Be8Qd5?MVL thought the pressure on f7 was too much and
decided to opt for the exchange of queens. Krasenkow also concurs with this
decision. In my view, however, the exchange of queens simplifies White's task.He could have offered more resistance with43...f544.Qh5Qf6After45.Qe2±White has an advantage. However, he has yet to find a way of
dislodging the Black knight and advance his a-pawn.44.Qxd5exd5This pawn
is Black's new asset and he hopes to make something of his prospects with the
knight. However, in the ensuing struggle the bishop proves superior to the
knight.45.Kf3Kf646.Kg4Ke747.Bb5Kf6MVL writes in his blog that47...Ke6could have saved the game. However, it is refuted by the calm48.Be2!according to Krasenkow. IfNc4Or48...Kd649.Kf5+-49.Kh5+-48.Kh5Kg749.Bf1The bishop is going to run rings round the d-pawn.Nb350.Bg2"White forces...d5-d4, and Black's d-pawn becomes even more
vulnerable."-Krasenkowd451.Bf1Nd252.Bd3Nb353.Bf1Nd254.Bd3Nb355.Bb5f656.Bf1Na557.Ba6Nb358.Bb5Na559.Kg4Nb760.Kf4Nc561.a5d362.Ke3d263.Be2!1–0
The Grand Prix had both talent and experience jostling for space, with Dubov, Duda and Yu Yangyi slugging it out with Svidler, Radjabov and Nakamura. Is time is running out for older players? Ask Sasha Grischuk. Now that he has qualified for the Candidates; he has every reason to be happy.
Caruana stops Carlsen
The games from the Isle of Man Tournament form the second segment in this DVD. This was a Swiss event with as many as 154 players, and the field included Aronian, Nakamura and Grischuk among others. The contest was won by Wang Hao slightly ahead of Caruana on tie-break, with a score of 8/11. Carlsen was among others sharing the third spot with 7½/11. The world champion was bogged down by draws and I still wanted to see how he was pipped at the post. I was surprised by the following game throughout, expecting Magnus to win any time.
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1.c4e52.Nc3Nf63.Nf3Nc64.e4!?The Nimzovich Variation that takes
control of d5 and leaves d4 weak.4.g3followed by 5.Bg2 is the Main Line.4...Bc5Black responds in kind and takes control of d4. Once upon a time
it was regarded as bad on account of White's next move.4...Bb4is the
other line.5.Nxe5Nxe56.d4Bb47.dxe5Nxe48.Qf38.Qd4is more
common.8...Nxc39.bxc3Ba510.Bf4The bishop and the e-pawn exert
pressure on d6, rendering the d-pawn immobile for now.If10.Qg3Qe7!
Not10...0-011.Bh6Bxc3+12.Qxc3gxh613.Be211.Be20-012.0-0d613.Ba313.Bh6?is premature on account off613...Re8and White's
pawn centre is under pressure.10.Ba3d611.exd60-012.0-0-0deserves
attention. It is similar to the position in the game here.12.dxc7??Qd4!-+10...0-011.0-0-0The first new move in this position. White
intesifies pressure on d-file with queenside castling.The flip side is that
the king runs into danger.Only11.Be2has been seen here so far.11.Rd1followed by 12.Be2 and 13.0-0 deserves attention.11...Qe712.Kb2Rb813.Bd3b5Caruana responds with sharp counterplay.14.cxb5Bb715.Qh3g616.Qe3Rfe817.Rhe1He can live dangerously with17.Qxa7Bb6At
ChessPublishing.com David Cummings gives17...Bxc3+!18.Kxc3Ra819.Qxb7Qc5+20.Bc4Ra3+21.Kb2Qxc422.Kxa3Qc3+=Draw by perpetual check.18.Qa3Qe619.f3Bd520.Ra1However, his position is too full of holes and
his king in a precarious state to claim any plus although he is two pawns up.17...Bc618.a4a619.Bg5Bxc3+!20.Kxc3Qa3+21.Kd2Qb4+22.Ke2Qg4+23.Kd2Not23.f3?Qxg2+24.Qf2Bxf3+-+23...Qb4+24.Ke2Qg4+25.Kd2Qb4+Draw! Note that the Black bishop has been en prise for the last six
moves.½–½
A fighting draw! Caruana is one of the few players who can take on the world champion in any contest. Let's not forget, he recently won the Tata Steel Masters in Wijk aan Zee tournament with a round to spare, ahead of Carlsen.
It’s a pity that I cannot do justice to Wang Hao here for reasons of space. In this issue he annotates his win over Luke Mcshane.
How team captains play
Finally, let us take a look at the games from the European Team Championship in this DVD. In recent years former Soviet republics, Russia, Ukraine and Armenia have dominated the event. This time it was again Russia that won the title on tie-break. It was followed by Ukraine and surprise of surprises, England. The Ukraine Team did well under the leadership of Ivanchuk and only his defeat in the hands of Dmitry Andreikin was a bit of setback.
Michael Adams of England and Dmitry Andreikin of Russia withstood enormous pressure on the first board and their perseverance enabled other team members to fight on round after round. As is known, collapse of the leader on the first board can be demoralizing for the players on other boards and they tend to lose heart. Adams and Andreikin kept up the morale of their teams till the end. For this reason I was keen to see their encounter in the penultimate round in this issue.
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1.e4e6Andreikin had prepared the French Defence for this tournament.
Usually, he plays1...e5leading to the Spanish or the Italian Game.2.d4d53.Nd2Adams on the other hand has a long experience with the Tarrasch
Variation.c53...Nf64.e5Nfd7is the other line. However, Andrekin
prefers a relatively more open position.4.exd54.Ngf3cxd45.Nxd4Nc66.Bb5Bd77.Nxc6bxc68.Bd3Bd69.Qe2Qc710.Nf3dxe411.Qxe4Nf612.Qh4h613.0-0led to a tense draw in Ragger-Andreikin in the second round of
the same tournament (=, 31 moves)4...Qxd5Once upon a time this move was
frowned upon as it exposed the queen to attacks and left the light- squared
bishop behind. In the course of the game these drawbacks make their presence
felt.The other line is too well-analysed.4...exd55.Ngf3Nc66.Bb5Bd67.dxc5Bxc58.0-0Nge79.Nb3Bd6Black has active pices to compensate for
its IQP.5.Ngf3The sacrifice of the pawn is temporary.cxd46.Bc4Qd67.0-0Nf67...Nc68.Nb3Nf6transposes.8.Nb3Nc69.Nbxd4Nxd410.Nxd4Be7?This move is less played and has a poor reputation as leading to a
passive position. Apparently Andreikin did not want to walk into his
opponent's preparation.The well-known move10...a6prevents Nb5 and
prepares...Qc7 and...Bd6. It also paves the way for...b7-b5 and...Bb7. It
would also have suited Andreikin's style.11.b30-012.Bb2Qf4Left to
himself, Black would want to initiate an attack with moves like...Bd6 and...
Ng4. However, White is better developed and he moves in first.13.Qf3
The ensuing exchange of queens suits Adams rather than Andreikin.13.Bd3
deserves attention of players who prefer to queens on the board.13...Qxf314.Nxf3b615.a4Bb716.a5!The first new move in this position. White's
pawn majority on the queenside is going to be more effective than Black's on
the kingside.Only16.Ne5has been seen here so far.16...Be417.Rfc1Patient preparation. The immediate 17. Ne1 defending c2 would have have shut
in the rook.Rad8It was necessary to activate the other bishop with17...Bc5without fearing18.Bxf6gxf618.Ne1Bg618...Bc5was still
playable.19.Bd3Ne420.Kf1Rd721.f3Bf622.Bxf6Nxf623.Bxg6hxg624.axb6axb625.Rd1Rc726.Rd6White begins the siege of the b-pawn. The
absence of the dark-squared bishop is now sorely felt by Black.Rb826...Nd5?allows27.c4winning the b-pawn.27.Ra6b528.Rab6Rcc829.Rdc6Rd830.Rxb8Rxb831.Nd3Nd532.h4Ra833.Ke2Ra1?This could have waited.It was necessary to activate the king first with33...Kf8!34.g4Ke7
though White enjoys a slight plus.34.Rc8+The point.Now the Black king is
shut out in a far off corner without any play.Kh735.Ne5f636.Nd7Ne7?
A blunder towards time control.36...Kh6??37.Rh8#would be a tragicomic
end to the game.36...e5?37.Nf8+Kh638.Ne6Kh739.Rc5Nb440.Kd2Ra241.Nc7wins the b-pawn.36...Nf4+!offered stronger resistance.37.Kf2e538.Nf8+Kh639.g3Nd540.Ne6Kh741.Rc5Nb442.Ke3±
and white still has to make headway.37.Nxf6+!gxf638.Rc7Kh639.Rxe7e540.g4Rc141.Kd3Rf142.Ke2Rc143.Rc7Rh144.Rf7Rxh445.Rxf6Kg546.Rb6Kf4If46...Rh2+47.Ke3Rxc248.Rxb5+-47.Rf6+47.Rxg6allowsRh2+48.Kd3Kxf347...Kg548.Rb6Kf449.Rf6+Kg550.Rf8Rh2+51.Kd3b452.c3bxc353.Kxc3Rf254.Kd3Rb255.Kc4e4?Anxious for counterplay,
Andreikin gives up this pawn to create a passed pawn for himself on the g-file.
Unfortunately, White's pawn is faster.Black ccould still fight on with55...Rf2!though after56.Kd5Rb257.Rb8Rf258.Ke4Re2+59.Kd3Rf260.Ke3Rf161.b4the outcome is not in doubt.56.fxe4Kxg457.e5Rc2+58.Kd5Rd2+59.Kc6Re260.Kd6Rd2+61.Ke7Rb262.Rb8g563.e6Kh564.Ke8g465.e7g366.Kd7Rd2+67.Kc61–0
A smooth performance by the English veteran. What went wrong with Andreikin? He had played the French against Markus Ragger in the second round and secured a draw after a tense game. Now in the 8th round he expected his experienced opponent to be ready for him in the same opening. So he opted for a lesser line and came to grief. Fortunately, his teammate, Nikita Vitiugov won against Luke McShane (the game is annotated in this issue). With two draws on the remaining boards the score was 2:2. In the last round Ukraine and Russia were with level points. Russia scored 2½-1½ over Poland and Ukraine missed the bus with “only” 2:2 against Croatia. So Russia won Gold, Ukraine, Silver and England, Bronze medal.
Among the young stars the hero was Daniil Dubov and his games with Bjerre and Svane were indeed a spectacular performance. They are highlighted in this DVD.
I missed the games from European Team Championship for Women. Hopefully, they would appear in the next issue.
This brings me to the rest of the DVD. Apart from standard features on middlegame tactics, endgame play and training this issue has as many as 11 opening surveys ranging from the Berlin to the King’s Indian. Among them I would single out the articles on the Traxler Counterattack in the Two Knights’ Defence and the unusual line 3.h4!? against the King’s Indian.
Tal is Tal!
The Traxler Counterattack has a chequered history and much of its theory was developed in correspondence chess and I would have liked to see some of those games. The only exception here is a telephone game that Tal played with readers of Pionerskaya Pravda This was a newspaper for young readers (not to be confused with the regular newspaper, Pravda). Apparently the game started in 1968 and finished in 1969.
Misha revelled in offbeat games and loved meeting the young.
In this game he “faces” invisible opponents whose zest for chess matches his own.
He enjoys himself and so do the young players thrilled at the prospect of beating a legend. Here is what happened (I am giving it here without major notes so that readers can analyse it on their own and compare it with the annotations in the DVD)L
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This was a consultation game and readers were invited to send suggestions to
the newspaper and the Editors selected the "best" move and passed it oto Tal
by telephone.1.e4e52.Nf3Nc63.Bc4Nf64.Ng54.d3leads to the slow
Italian Game, currently in vogue.4...Bc5!?The Traxler Counterattack
named after Karel Traxler, Czech chess master (1866-1936).4...d55.exd5Na56.Bb5+c67.dxc6bxc68.Be2h69.Nh3is the old Main Line of Two
Knights' Defence on which great battles were fought between Steinitz and
Chigorin during 1890 and 1892.5.Nxf7The "sober"5.Bxf7+is the main
alternative to this "greedy" move.5...Bxf2+Here the "fun" begins and I
shall pass the rest of this game without comment. Detailed annotations are
found in the current issue,CBM 193.6.Kxf2Nxe4+7.Kg1Qh48.g3Nxg39.hxg3Qxg3+10.Kf1Rf811.Qh5d512.Bxd5Nd413.Qh2Qg414.Qxe5+Be615.Bxe6Qf3+16.Kg1Ne2+17.Kh2Qf2+18.Kh3Qf3+19.Kh4Qf2+20.Kh5Rxf721.Bxf7+Kxf722.Rh2Qf3+23.Kh4g5+24.Qxg5Rg825.Qh5+Qxh5+26.Kxh5Ng3+27.Kh6Nf5+28.Kxh7Rg7+½–½
“Pionerskaya Pravda” versus Mikhail Tal, Telechess 1968-1969
How to intimidate King’s Indian players
The second line, 3.h4!? against the King’s Indian was analysed by Simon Williams way back in 2011 (SOS No.13, New in Chess). An update is only appropriate. Currently, the ball is in Black’s court.
The main database of the issue has 1618 recent games of which 33 are deeply annotated.
Apart from the GMs I have already mentioned, the commentators include Fabiano Caruana, David Navara, Yu Yangyi, Lars Schandorff and Igor Stohl. It may be noted that there are more annotated games in the sections on opening theory and training.
Analyses by Caruana, Giri, Duda, Wang Hao, So, Vidit, Vitiugov, McShane and many more. Plus videos by Williams, King and Shirov. 11 opening articles with new repertoire ideas and training sessions in strategy, tactics and endgame!
Videos by Mihail Marin, Adrian Mikhalchishin and Georgios Souleidis. "Lucky bag" with analyses by Alireza Frouzja, Peter Heine Nielsen and many more. Plus over 35,000 new games for your database!
Nagesh HavanurProf. Nagesh Havanur (otherwise known as "chessbibliophile") is a senior academic and research scholar. He taught English in Mumbai for three decades and has now settled in Bangalore, India. His interests include chess history, biography and opening theory. He has been writing on the Royal Game for more than three decades. His articles and reviews have appeared on several web sites and magazines.
Chess Festival Prague 2025 with analyses by Aravindh, Giri, Gurel, Navara and others. ‘Special’: 27 highly entertaining miniatures. Opening videos by Werle, King and Ris. 10 opening articles with new repertoire ideas and much more.
Experts examine the games of Max Euwe. Let them show you which openings Euwe chose to play, where his strength in middlegames were, which tactical abilities he had or how he outplayed his opponents in the endgame.
This interactive video course of over 8 hours, provides an in-depth exploration of the Pirc Defence, a favoured opening for people looking to play for the win with the black pieces.
Pirc Defence Powerbase 2025 is a database and contains a total of 10027 games from Mega 2025 or the Correspondence Database 2024; of these 874 are annotated.
The Pirc Defence Powerbook 2025 consists for a greater part of engine games (168 000), to which has been added high value material from Mega and the Correspondence Database (115 000).
The free app from ChessBase! ChessBase Mobile has everything you need as a chess player on the go:
access your chess data in cloud databases - and 13 million games.
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