8/22/2017 – The RTU Open took place in Riga from August 7th to 13th, and was won by Ukrainian Grandmaster Vladimir Onischuk with 7½/9. Local hero Alexei Shirov couldn't show his best chess and finished 35th. Strong impressions were made by some youth players, including the world's current female No. 1 in the Under-18 category, Zhansaya Abdumallik | Photos: rtuopen.lv
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!
Have you always wanted to play the Sicilian as Black, but been discouraged by the abundance of options for White? Here is the solution to becoming a lifelong successful Sicilian player!
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RTU Open
The 7th RTU Open ended last Sunday, August 13th. It has grown into a huge chess festival which takes place at the Kipsala Exhibition Center in Riga. 319 participants in the A Tournament — including 42 Grandmasters and 55 International Masters — fought for the substantial prize pool of €15,100.
Playing hall and format
The Playing Hall is located on the Kipsala island, which is on the left side of the river Daugava. Although separated from the beautiful center of Riga, it is just a short walk over a bridge to enter the historical center with all its bars and restaurants. The playing hall itself was very large, providing enough space for five tournaments and more than 500 participants.
A huge topic — at least from my perspective — was the time control. The players had 90 minutes for the whole game, plus an increment of 30 seconds per move. However, there was no second time control, meaning that after move 40, no additional time is added to the clock. Therefore, once in time trouble, always in time trouble.
Already a major factor at regular time controls, time pressure often became decisive in any given game. On the one hand, a lot of winning positions were spoiled, while on the other hand, players were forced to make use of any practical chances. One drastic example:
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41.Qa3the position after move 40 is completely winning for black. He
is two pawns up, has the better light piece and the white rook on f5 is in
danger of getting embarrassed by ...Nd4. In a "normal" time control, Lugovsky
could consider of giving up, but consistently being under time pressure, the
black position turns out to be hard to handle - even for such a strong
grandmaster as Ovsejevitsch.Nd442.Rc1b443.Qa2b3?there is nothing
wrong with43...Nxf5but who would give up such a strong knight against the
poorly placed rook on f5?44.gxf5Rd6and white could try to complicate
matters by playing the strong45.d4although after the preciseQc6!-+
the game wouldn't last too long.43...Qc6!-+centralising the queen
and vacating the c8-square for the rook would have been the easiest. I don't
see a way for white to mudden the waters.44.Qa3!The queen attacks the
pawn on c5 and suddenly things turn out to be complicatedKf7?44...Ne6
a sad choice to give up the b3 pawn, but that way, Ovsejevitsch stays in
control45.Qxb3Qc646.Bxe5!?fxe547.Rxe5Kd748.d4
and things are still not settled although the extra material should count44...Rd645.Rxc5Qd7looks good as well. White needs to hurry by playing46.Bxe5and things are chaotic againfxe5?!46...Nxf547.Bxf6+Kxf6!47...Rxf648.gxf5∞48.gxf5Kg7seems to be the easiest
a line supported by the engine is48...Qh7but who would enter the
complications after49.Qb2+Ke750.Rc7+Rd751.Qe5+Kd852.Rxd7+Kxd753.Qe6+Kc754.Qc4+Kb755.Qxb3+Ka7-+48...Rb849.e5+Kxf550.exd6+Kg649.Qb2+Kh750.Qxb3Rd8and somehow the extra rook should
finally make itself felt47.Rfxe5+Kf748.Rxg545.Rxc5the white
heavy pieces enter the black camp and the king on f7 starts to feel akwardQb7?45...Qd7!is the only way to stay in the game as the queen is
protected in d746.Rcxe5!46.Bxe5?!doesn't work nowNxf547.Rc7?Nh4+48.Kf1fxe549.Rxd7+Rxd7-+46...Nxf547.Qxb3+!Kg748.Rxf546.Bxe546.Rxf6+!would have been even strongerKxf647.Bxe5+Kg648.Rc7Qxc749.Bxc7+-46...Nxf547.Rc7+Qxc748.Qxb3+Kg749.Bxc7Nd4?However, after49...Nh4+50.Kf1Nf3!51.Qc3Rd7and black
can hang on, although his position looks suspicous.50.Qb6!the game ends quicklyRd751.e5!Rf852.Bd61–0
Ukrainian Grandmaster Vladimir Onischuk dominated the tournament from the very beginning, starting with six victories, before coasting to the finish with three draws. An all important game turned out to be the encounter between Onischuk and the Israeli Grandmaster Tamir Nabaty, who finished in third place.
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1.e4c62.d4d53.Nc3dxe44.Nxe4Bf55.Ng3Bg66.c3a quiet sideline
which says: I have more space out of the opening and I'm not eager to refute
your Caro. It has to be said that this line is the pet line of Onischuk. A
perfect choice for the afternoon game of a double round, as Nabaty had very
little time to prepare against it. Looking at the time consumption of black,
one has to suspect that Nabaty didn't consider this little move in his prep.6.h4is of course the most ambitious main line6...e67.Nh3Bd67...c58.Qb3Qb69.Qxb6axb610.dxc5bxc511.Nf4Bc212.Bb5+Nd712...Nc6=13.a40-0-014.Kd2±1-0 (50) Onischuk,V (2602)-Donchenko,A (2581) Bastia
20168.Nf4Nf6Black is happy to give up his light squared bishop as this
would open up the h-file for his rook. The Ng3 would turn out to be a source
of worry for White9.h49.Nxg6hxg610.Qf3Qc711.Ne4Nxe412.Qxe4Nd7 and Black is ok9...Qc79...Bxf4is the
"small solution" for black - he avoids complications but in return, he has to
give up his strong black squared bishop10.Bxf4h611.h5Bh712.Bc4Nbd713.Qe20-0and black is of course solid, but never more than that14.0-0Re8=1/2-1/2 (45) Ponomariov,R (2706)-Grischuk,A (2747) Almaty 201610.Qf3Nbd711.h5Bc212.h6g612...gxh6gave Onischuk a nice position in
2016:13.Ngh5Nxh514.Rxh50-0-015.Bd3Bxd316.Nxd3e517.Kf1f618.Be3and the better pawn structure secures an positional advantage in 1-0 (46)
Onischuk,V (2628)-Antal,G (2539) Gjakova 201613.Bd3Bxd314.Nxd3
Onischuk has accomplished to push his h-pawn up the board. This will guarantee
some positional threats, for example a knight on g5 or the vulnerabiltity of
the f6-square. Not a nice position for Nabaty who decides to stabilise the
king side castling short. A risky decision, as the king will come under attack
sonn after0-014...0-0-015.Bg5Be716.0-0 and
Onischuk has the easier game, as in most of the endgames, the constant threat
of winning the h7 will make the black player suffer.15.0-0Qa516.c4Bxg3To give up the dark squared bishop is a decision one doesn't make
lightheartedly - but Nabaty felt that he needed to win control over the f5
square. Otherwise his queen would be doomed to passivity17.Qxg3Qf518.Re1a519.Ne5Rfd819...Nxe520.dxe5Nd721.Bg5±
and the black rooks cannot oppose in the d-file20.Qh4!putting up the
worrisome threat of Bg5!Ne820...Qh521.Qxh5Nxh522.g4Nhf623.Bg5Re824.Rad1±and Black is paralized. Would the h-pawn be on h2, the
evaluation would be a completely different one21.Qe7Nxe521...Qf6!22.Qa322.Qxf6?!Ndxf6!23.Nf3b5!typical
motif in the Caro Kann: Black fights for the d5 square and can be confindent
about his future prospects.22...a423.Bd2±22.dxe5Qd323.Qxb7Qxc424.Bg5Rdb825.Qd7Qg426.Be3Qh526...Rxb2?27.Qe7+-27.Rad1The white pieces dominate the board as the black
rooks need to defend the weak backrank.Rc828.Qe7Rc729.Qc5f5?Nabaty desperately attempts to get some luft for his king29...Qh4instead passive defence was called for, but who could blame the
black player to restrain from this strategy.30.Rd4Qe731.Qc3±30.Rd330.Qc4g531.Qxe6+Qf732.Qxf7+Kxf733.Bxg5+-White is two pawns up
and should have a technically winning position30...Qh431.Red1simple
chess: Onischuk invades on the 7th rank after which the black king can't
survivef432.Qc4!employs the pin on the 4th rank and starts to set
mating threatsRf733.Rd7Qg434.R1d4g534...Rxd735.Rxd7+-35.Rxf7Kxf736.Bxf4!c537.Rd7+Kf838.Qxc5+Kg839.Qc2Kf840.Qxh71–0
A huge amount of young and very talented players took part in the A Tournament. I for myself faced four youth players (out of nine games), including the female U16 player Olga Badelka, who is — in her rating category — No. 4 in the world. She is definitely a player to watch out for in the future. In round three she defeated the experienced Italian Grandmaster Michele Godena.
Belarusian U16 player Olga Badelka (2335 Elo)
Another very strong female talent is Zhansaya Abdumallik from Kazakhstan. She won the World Youth Chess Championship twice and came to Riga with a rating of 2423. Two draws against the Russian Grandmasters Evgeny Vorobiov and Kirill Alekseenko, 5.5/9 in the overall standing and the third prize for best woman was her impressive score.
Zhansaya Abdumallik
David Miedema, an International Master from the Netherlands who also participated at the RTU Open, captured his impressions in a short video, where he also interviewed Zhansaya (starting at 1:40):
RTU Impressions by the Chessnomad David Miedema
17 years old Russian Grandmaster Alexey Sarana came from the "Match of the Millenials", where he contributed to the smashing 30.5 to 17.5 victory of the "World Team" against the USA. In Riga, he retained his shape and took the 8th place.
US-talent Andrew Tang left quite a strong impression on me. Although he missed the grandmaster norm in round nine, his play showed very deep understanding. Here is one example, in which he completely outplayed a strong grandmaster:
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1.d4d52.c4e63.Nc3Be7The Queens Gambit can be considered to be the
most classical approach for black.4.cxd5exd55.Bf4c66.Qc2Nf67.h37.e3Nh58.Be5Nd79.Be2Nxe510.dxe5g611.Bxh5gxh512.0-0-0f6!
was fine for black in 0-1 (72) Grischuk,A (2747)-Aronian,L (2808) Kazan 2011
CBM 143 [Krasenkow,M]7...Qa5!prepares the exchange of on pair of
knights which is in general good news for black8.Nf3Ne49.Nd2White has
to waste a tempo, otherwise ...Bb4 or ...Bf5 would excert pressure on the
constellation Qc2, Nc3, Ke1.9.Bd2Nxd210.Nxd2g611.e3Bf512.Bd3Bxd313.Qxd3Qd8and black can't be worse: 1/2-1/2 (19) Lupulescu,C (2657)-Giri,A
(2714) Porto Carras 20119...Nxd210.Qxd20-011.e3Bf5!N11...Be6?!there is no need to surrender the important diagonale b1-h7 that easily12.Bd3c513.dxc51-0 (65) Lupulescu,C (2616)-Goganov,A (2517) Plovdiv
201212.g4?a decision you definitely make with mixed feelings, as the
white king will have to castle long afterwards. Maybe already a mistake, as
Arik Braun told me after the game. He underestimated the black attacking
potential while dreaming of getting an advantage on the king side.12.Bd3Bxd313.Qxd3=would give up all ambitions the reach an advantage out of
the opening. Black is completely fine.12...Be613.0-0-013.Bd3is
possibly more sensitive. Would black chooseb5?White could exploit not
having castled yet and bring the king towards the kingside.However, after13...Nd7!it is not clear, how White will carry on his play without
castling long.14.0-0±13...b5!the weakness on c6
does not count, as Tang will show in the game! In the next moves the game will
continue as expected: Braun regropus his Nc3 while Tang pushes his pawns on
the queenside14.Kb1b415.Ne2Nd716.Nc1Qb617.Nd3a518.Rc1Rfc819.Ne5Nf620.f3a421.Nd3Nd722.h422.Ne5!?with a silent draw offer
should have been chosen by Braun. After the text move, the white position
becomes very dangerous. However, refusing the draw by playingc5!would
have been strong.22...c523.dxc5Nxc524.Nxc5Bxc525.Bd3a326.b3
the problem for white is, that his Bishop on f4 can't join
the defense as he has to protect the pawn on e3.d427.exd4Bxd428.Be4Bb2Objectively the position is still ok, but who would choose to defend such a
weak king?29.Bxa8Bxc130.Rxc1Rxa831.Rd1h532.Be5f633.Bd4?!33.Qd6!Qxd634.Bxd6hxg435.fxg4Bxg436.Re1and White has chances to
survive.33...Qb534.gxh5Qxh535.Qe3Re836.Ka1Bd537.Qd2Bxf338.Rg1Qxh439.Qxb4Re240.Qc3Bg441.b4?a last oversight after which Tang
wins the game in styleBe6!42.Bxf6Rxa2+43.Kb1Qe4+44.Kc1Qf4+45.Kb1Qe4+46.Kc1Ra1+!47.Qxa1Qe3+48.Kc2Bb3+and mate on g1 is coming0–1
On this DVD Grandmaster Daniel King offers you a repertoire for Black with the QGD. The repertoire is demonstrated in 10 stem games, covering all White's major systems: 5 Bg5, 5 Bf4, and the Exchange Variation.
(Above) Andrew Tang (Below) Although drawing four Grandmasters, the Iranian U16 player Aryan Gholami missed the GM norm by half a point
Latvian Legend
Alexei Shirov is the Latvian No. 1 and needs no special introduction to any chess player. He was one of the world top players for many years and his ultra-aggressive style inspired tons of chess players. However, in the last years, his Elo went down and Shirov even dropped out of the 2700+ club, of which he was part of for decades. Riga wasn't a good tounament for him neither: with a score of 6.0/9 he finished in 35th place and missed the prize money.
Unfortunately, Alexei Shirov couldn't show all of his class | All photos: rtuopen.lv/en
All games (boards 1-36):
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1.e4
1,169,498
54%
2421
---
1.d4
949,345
55%
2434
---
1.Nf3
282,426
56%
2440
---
1.c4
182,608
56%
2442
---
1.g3
19,741
56%
2427
---
1.b3
14,334
54%
2427
---
1.f4
5,914
48%
2377
---
1.Nc3
3,814
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
---
Please, wait...
1.d4d52.c4e63.Nc3Be7The Queens Gambit can be considered to be the
most classical approach for black.4.cxd5exd55.Bf4c66.Qc2Nf67.h37.e3Nh58.Be5Nd79.Be2Nxe510.dxe5g611.Bxh5gxh512.0-0-0f6!
was fine for black in 0-1 (72) Grischuk,A (2747)-Aronian,L (2808) Kazan 2011
CBM 143 [Krasenkow,M]7...Qa5!prepares the exchange of on pair of
knights which is in general good news for black8.Nf3Ne49.Nd2White has
to waste a tempo, otherwise ...Bb4 or ...Bf5 would excert pressure on the
constellation Qc2, Nc3, Ke1.9.Bd2Nxd210.Nxd2g611.e3Bf512.Bd3Bxd313.Qxd3Qd8and black can't be worse: 1/2-1/2 (19) Lupulescu,C (2657)-Giri,A
(2714) Porto Carras 20119...Nxd210.Qxd20-011.e3Bf5!N11...Be6?!there is no need to surrender the important diagonale b1-h7 that easily12.Bd3c513.dxc51-0 (65) Lupulescu,C (2616)-Goganov,A (2517) Plovdiv
201212.g4?a decision you definitely make with mixed feelings, as the
white king will have to castle long afterwards. Maybe already a mistake, as
Arik Braun told me after the game. He underestimated the black attacking
potential while dreaming of getting an advantage on the king side.12.Bd3Bxd313.Qxd3=would give up all ambitions the reach an advantage out of
the opening. Black is completely fine.12...Be613.0-0-013.Bd3is
possibly more sensitive. Would black chooseb5?White could exploit not
having castled yet and bring the king towards the kingside.However, after13...Nd7!it is not clear, how White will carry on his play without
castling long.14.0-0±13...b5!the weakness on c6
does not count, as Tang will show in the game! In the next moves the game will
continue as expected: Braun regropus his Nc3 while Tang pushes his pawns on
the queenside14.Kb1b415.Ne2Nd716.Nc1Qb617.Nd3a518.Rc1Rfc819.Ne5Nf620.f3a421.Nd3Nd722.h422.Ne5!?with a silent draw offer
should have been chosen by Braun. After the text move, the white position
becomes very dangerous. However, refusing the draw by playingc5!would
have been strong.22...c523.dxc5Nxc524.Nxc5Bxc525.Bd3a326.b3
the problem for white is, that his Bishop on f4 can't join
the defense as he has to protect the pawn on e3.d427.exd4Bxd428.Be4Bb2Objectively the position is still ok, but who would choose to defend such a
weak king?29.Bxa8Bxc130.Rxc1Rxa831.Rd1h532.Be5f633.Bd4?!33.Qd6!Qxd634.Bxd6hxg435.fxg4Bxg436.Re1and White has chances to
survive.33...Qb534.gxh5Qxh535.Qe3Re836.Ka1Bd537.Qd2Bxf338.Rg1Qxh439.Qxb4Re240.Qc3Bg441.b4?a last oversight after which Tang
wins the game in styleBe6!42.Bxf6Rxa2+43.Kb1Qe4+44.Kc1Qf4+45.Kb1Qe4+46.Kc1Ra1+!47.Qxa1Qe3+48.Kc2Bb3+and mate on g1 is coming0–1
Marco BaldaufMarco Baldauf, born 1990, has been playing since he was eight. In 2000 and 2002 he became German Junior Champion, in 2014 he became International Master. He plays for SF Berlin in the Bundesliga.
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.
Whether it’s a weak pawn, a vulnerable king, or poor piece coordination, this course will teach you how to pinpoint the critical targets, prioritise your attack, and execute a clear, effective plan.
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