Eugene Perelshteyn’s Big Announcement

For today’s video, Grandmaster Eugene Perelshteyn is back to tell you about his new website, ChessOpeningsExplained! You may have heard of his books, Chess Openings for Black Explained and Chess Openings for White Explained, and now they are coming to life online. Before I highlight some of the benefits of a ChessOpeningsExplained Membership, here’s GM Perelshteyn’s video on the importance of a consistent opening repertoire – in this case, the dark square strategy!

As mentioned in the video, becoming a member will not only grant you access to PGN versions of the Chess Openings Explained series, but also a video library with updated theory and high-level games, as well as a forum to ask specific questions you may have about the repertoire. As a bonus, becoming a member will give you a free game analysis code for AskAGM, the sister site of ChessOpeningsExplained, where a Grandmaster will go over any game you submit!

Make sure to check out the site, and let us know what you think!


Chess Chat 3 – Free Game Analysis and Other Big News

My coach told me to relax this week and limit my preparation for the Carolinas Classic this weekend, so for today’s  video, I decided to review a free game analysis submission from a few weeks back. Interesting game, important notes on opening fundamentals – don’t miss out!

As I briefly mentioned in my last post, I will be adding new authors to Chess^Summit after the US Junior Open. In today’s video, I take a few minutes to discuss the future of Chess^Summit, as well as reveal one new future author. I have a feeling that regardless of how Chess^Summit 3.0 turns out, I think it will be a fun and exciting project to be a part of.

As always, if you too would like your game to be analyzed, make sure to send your game PGNs to, and I’ll try to go over it here on the site – either in article or video form.

That being said, I hope you enjoy today’s video, and make sure to check back next week to hear about my results in Charlotte!

Tactical Melee!

Check out my video for today! In this video, I reset my tactics trainer rating to 1200 and tried to bring it up as much as possible in 10 minutes. With the exception of a small slip up in the end, I was nearly perfect! See if you can do better by pausing the video before I try and solve each puzzle.

Tactics Trainer Revisited: The 2700 Club

This morning I managed to crack 2700 on’s Tactics Trainer, so I decided to do a revised post on that, with some key updates and coaching advice from my last post on the website’s tactical features.

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I’ve used since my sophomore year of high school, with this coming November marking my fourth year of membership on the site. Aside from video viewership and Chess Mentor, one of the advantages of a diamond membership is unlimited tactics a day on Since I started using the feature in 2012, I’ve attempted over 15,000 puzzles and climbed the ranks to reach 2700.

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It may not last long, but for now, I’m ranked one spot ahead of’s CEO, IM Daniel Rensch.

So as a coach and an active player, how do I assess progress on Tactics Trainer?

For most of my students, I believe that your tactics trainer rating minus ~200 points roughly represents your level of play. While that’s true for most 1400-2000 rated players, I think what TT represents after it gives you a 2400+ rating is very different from the original intentions of its functionality.

For master level players,’s TT features are great for warming up or practicing calculation while on a bus, but it no longer serves as an exact gauge of your tactical ability. Since most of the puzzles are member-submitted, the target audience is usually 1500-1900, and sometimes even lower.

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Even’s bell curve shows the target audience for TT, and the number of players above 2000 are minuscule. does two things two things make Tactics Trainer more challenging for stronger members: Limit the amount of time to gain rating points and more endgame puzzles. Once you break 2400 on TT, the emphasis becomes much more on speed in a position where perhaps you have many different pleasant options, and you have to find the best one. Endgame puzzles become more frequent at the higher levels too, but often times, simply knowing opposition and achieving it on the board is enough to reach 50% of the solution, merely finding forcing moves and the right move order should be enough to earn the other half.

Does this mean that Tactics Trainer is bad for top players? Of course not – you just have to realize that it won’t push you to be as creative as perhaps a position in Secrets of Chess Tactics because’s interface is programmed so that only one move can be correct. Which leads me to my next point.

No puzzle is a bad puzzle. It’s so easy to get a puzzle wrong, look through the answer, and think “this puzzle is bad” before moving on to the next problem. Already in doing this, you deprive yourself of the greatest learning opportunity you have: your own mistakes. Whenever we play a tournament game, our natural habit is to review the game (perhaps with the opponent) and spend lots of time calculating the lines of the most critical position.’s TT lets you cheat in the sense that it takes away the rest of the game and only gives you a critical position. You getting the puzzle wrong means you failed to find the best resource in said position. From my experience, I’ve kind of learned the different tiers of wrong:

1) You weren’t wrong, you just weren’t rightOften I find that when I make an error in a puzzle my line works perfectly fine, it’s just that it is simply not as good as the best solution. This may be frustrating but it’s important to understand why your answer wasn’t as right.

2) Move Order! Move Order! Move Order! This is the next rung down the ladder, as now we make the descent into actual mistakes and game-losing blunders. A move order error could simply fail to win as much material/checkmate, or even draw/lose to a discovered attack. This is one of the main tests TT offers, and what separates the complainers in the comments from the users that give answers.

3) Calculation Error… Now things turn sour. Maybe you left a piece hanging, or the endgame you were analyzing is actually a draw because you missed the critical in between move. Full board awareness is a skill, and you have to develop it by asking yourself one question….

4) What can my opponent do? On some puzzles, the computer introduces the position by offering a move for the opposing side. Asking yourself why the opponent made that move and understanding his plan is the first step towards getting the answer right. Then you need to look for critical weaknesses and themes in the position. Is a piece overloaded? Is there a mating net? This can get you back on the right track.

As a coach, there isn’t a student I haven’t recommended Tactics Trainer to. It teaches discipline while simultaneously offering a lesson in full board awareness. That being said, as a player trying to become a master, I have come to terms that while TT is a great resource to warm up, ease into a practice, and get in the mindset of calculating, it simply isn’t enough to bear the weight of all my tactical studies.

Live Chess: Psychological Factors

Don’t believe that psychology plays a major factor in chess? Watch this video to see how my mentality changes after a mouse slip from my opponent … and how it almost cost me the game!

I didn’t think the level of chess was anything special this game, but after re-watching the video, I thought the shift in my mindset was very visible and a distraction to my calculation process. Take this as a lesson – the game isn’t over till its over!

Opening Experiments on ICC

For those of you who may recall, I did a video + analysis post on the Berlin last month, and today I decided to try a similar format for a new opening. I played 1 d4, hoping for a Queen’s Gambit or Nimzo-Indian, but my opponent instead tried a Dutch. In an effort to be different, and have something new to talk about Tuesday, I tried 2. Nc3 to immediately threaten e2-e4.

After going into a “Leningrad Structure”, I tried a thematic h2-h4-h5 push to bust open my opponent’s king for what should have been a routine win. However, being careless in my calculations, I missed a simple way to extract my opponent’s king and had to find a cool mating idea later to get the result. See if you can find the win before I did!

Since my opponent didn’t exactly play winning chess, I think on Tuesday, my goal is to answer 2 questions:

1) Why is 2 c4 more common than 2 Nc3 against the Dutch?

2) How is Black supposed to stop the h-pawn push in the Leningrad Dutch – and can White make it even more effective?

That being said, I hope you enjoy today’s video!

A Better Berlin: Handling 5. d4

In last Sunday’s video, I tried playing 1…e5 in response to the King’s Pawn opening. Without much theoretical knowledge of the Berlin, I quickly got bogged down in a worse position and on the clock. Though I got back into the game with a sacrifice on  g4, the position I reached isn’t desirable enough to want to play again. Let’s take a quick recap of what happened:

JoseBautista–leika (G/15 ICC, 2015)

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6

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The Berlin of the Ruy Lopez. Since it is one of the most solid openings at the Grandmaster level, I decided to give it a try. I hadn’t studied Ruy Lopez theory in 8 years, and when I did it was for White. Back when I played against the Ruy Lopez, I opted for an immediate 3… a6.

4. O-O Nxe4 5. d4

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Already one out of book for me. While this move is one of the most popular ways to counter 4… Nxe4, I was only familiar with some of the 5. Re1 theory. And so here starts the Belin Wall, well – sort of.

Nd6 6. Bxc6 dxc6 7. dxe5 Nc4?

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The first inaccuracy that set the tone for the match. Main line, as we will see, is the much better 7… Nf5. In the video, I discussed the possibility of playing …Nc4-b6 and how playing …Nd6-f5 would block in my bishop, but this approach gave my opponent too many tempi. As we’ll see, Black aspires to play …b7-b6 and fianchetto the bishop for solidarity and good endgame play.

I’ll stop here since this questionable move already deviates from the Main Line which we will be discussing. When looking for a model game, I was lucky to find the Giri–Vachier-Lagrave match up from the London Chess Classic, in which Anish outplayed Maxime in a critical tiebreak match.

Anish Giri and Maxime Vachier-Lagrave, both in the World’s top 10, have played each other many times – including the recent 2015 FIDE World Cup!

Vachier–Lagrave – Giri (London Chess Classic, 2015)

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 Nd6 6.Bxc6 dxc6 7.dxe5 Nf5

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Here gives us the critical move 7… Nf5 which makes Black’s position tenable. From here, the Black knight can attack the center without being easily kicked away (8. g4? would be a serious weakening). With the queens coming off the board, it’s important that Black has piece activity to make up for losing the right to castle.

8.Qxd8+ Kxd8 9.h3 Ke8

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Let’s say the line ends here, as Giri’s remaining developing moves are intuitive, and could arguably be found over the board by any strong player. White has given up the pair of bishops and is in the endgame, but has some compensation. Beyond the doubled pawns on the c-file, Black is unable to castle, and needs time to develop to prove equality.

10.Nc3 h5

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What is this move? This h-pawn thrust is a prophylactic measure against any future idea for White involving g2-g4. With the game heading to an endgame, this idea is not as much of a weakening considering that the queens have been traded.


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While this move plans to put the e2 knight in the center of the board, it’s kind of esoteric. This isn’t the most common move, as 11. Bf4 holds that honor, but it scores the same among ~2600 rated players.

11…b6 12.Rd1 Be7 13.Bg5 Bb7 14.Bxe7 Kxe7

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Black doesn’t really mind moving the king around so many times. As long as Giri’s king is safe and covers the d7 square, he’ll be fine. In fact, if you think about it, the king needs to be active in the endgame anyways. According to ChessBase’s online database, this immediate trade on e7 has never occured. While Black no longer has the pair of bishops, Anish has three “long-range” pieces compared to Vachier-Lagrave’s two.

15.Ned4 Nxd4 16.Nxd4 c5 17.Nb5 Rhc8

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Black’s last move to solidify. With all of his weaknesses covered, Giri is ready to start pushing …a7-a6 and then improve his position.

18.f4 Bc6 19.Nc3 Ke6 20.Kf2? h4!

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And just like that Black is arguably better! Should White try to play g2-g4 now, he would compromise his structure, leaving a static weakness on f4. Already, there are some ideas of …Rh8 in the position, with an idea of a rook lift to g6.

21.a4 Kf5 22.Ke3 Re8

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Both …Rd8 and …Re8 were perfectly acceptable here, but this move takes the most principled approach. With the rook on the same file as the king, White must find an answer for …f7-f6, ruining White’s hold on the center.

23.Nd5 Rac8 24.Rd2 f6 25.Rf1 fxe5 26.fxe5+ Kg5!!

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Maxime must have missed this. If Black takes on e5 immediately with the king, it stands in the center of the board, in the crossfire of both of Black’s rooks. Now should White try to protect the e5 pawn with 27. Ke4, he will lose to 27… Rxe5+!! as 28. Kxe5 is mate after 28… Re8#. What an idea! With White forced to play passively, the rest of the game is a matter of technique.

Giri won the game later on move 43, in what was arguably his best game of the tournament. While the victory may have been sweet, it was short-lived, as Maxime went on to win the next two tiebreak games, sending him to the final against Magnus Carlsen.

So what does this game tell us about the Berlin? Let’s take a look at the structure after move 17.

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If you’re wondering why so many Grandmasters play the Berlin, you should start here. Structurally, Black is more solid and his king, thanks to the early queen trade is already in the center. With all of his early dynamic play, White has yet to define his structure, leaving his e5 pawn seemingly hyper-extended. If we think about how Vachier-Lagrave attacked Black’s weaknesses (17. Nb5), the threat of the c7 and a7 pawns only slowed Giri’s play but didn’t cause him long term problems, so already that position is at least equal. Let’s take this position to the next level.

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Since White decided to give up the bishop pair with 6. Bxc6, we must also take this into consideration. While this minor piece endgame may be arguably tenable, it is clear that again, only Black can play for a win as the bishop dominates white’s knight. So with this assessment, we can say that Black is better in most Berlin Endgames.

Here’s another game where Black proved that solidarity was more important than initiative.

Teimour Radjabov (right), of Azerbaijan, is in the world’s top 30. Known for his opening preparation, let’s see what he had ready for the 2015 World Cup winner, Sergey Karjakin.

Karjakin – Radjabov (World Rapid Chess Championships, 2015)

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 Nd6 6.Bxc6 dxc6 7.dxe5 Nf5 8.Qxd8+ Kxd8 9.Rd1+

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Our deviation from the Vachier-Lagrave–Giri game. Here Karjakin immediately asserts control of the d-file with a forcing move. While an easy move to play, it does have the drawback that Black already wants to get his king off the d-file. So while White develops, Black gets to improve his position.

Ke8 10.Nc3 h5 11.Bg5

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Radjabov’s last move, …h7-h5, set his intentions of playing a long game – just like Giri. Karjakin, knowing that he would not be favored in the endgame, plays with gusto, immediately developing his pieces with threats along the way. But can initiative overpower Radjabov’s solidarity?

11…Be7 12.Ne2 Bd7

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Radjabov can’t exactly afford to play pedantically. While …b7-b6 followed by fianchettoing the bishop is far more natural, here, its much more important that Teimour gets his rooks into the game. Note that 12… Be6? would be punished by 13. Nf4! as the bishop for knight trade would give away Black’s long-term advantage.

13.Nf4 Rd8 14.Bxe7 Kxe7

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Again we see the thematic exchange of dark-squared bishops. By getting his own bishop off the board, Karjakin intends to play Nf3-g5 to keep the initiative. While White’s pieces are seemingly more active, he runs into the issue that he just doesn’t have enough pieces.

15.Ng5 Rh6


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A weird looking move but a necessary one as e5-e6 (a theme that White missed in my video) is no longer possible. Objectively, the position is equal since Black is held down by White’s knights, but its Karjakin”s desire to fall that proves his undoing.

16.g3 Rf8 17.Rd3 Bc8

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Black doesn’t have much to do here, but Radjabov’s point is that White can’t either. Black’s only weakness is the d-file, but as many of you know, you need two weaknesses to win a game of chess.

18.Re1 Re8 19.f3 Kf8

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With a safe king, Radjabov can just make improving moves on the queenside.

20.Kf2 a6 21.h3 Ne7!

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A multi-faceted move. First, it gets out of the way of any g3-g4 pushes. Second, it prepares …Ne7-g6 attacking the e5 pawn and offering a trade of knights to simplify the endgame in Black’s favor.

22.g4?! hxg4 23.hxg4

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I’m not sure if I agree with White’s g3-g4 push. While seemingly naturally, it makes Black’s h-rook more active and ignores the idea of …Ng6. By simplifying the endgame, the game gets easier for Radjabov, not Karjakin.

23…Ng6 24.Nxg6+ Rxg6 25.Nh3 Rh6 26.Nf4 Rh2+

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In just a few moves, Black has maximized his advantage after a single trade and claiming the h-file. White may already have to play for equality.

27.Ng2 Ke7 28.Re2 Reh8 29.Ke3 R8h3 30.Nf4 Rxe2+ 31.Kxe2 Rh2+ 32.Kd1 g6

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Only on the better side of equal, Black defines his structure while White wonders how to fix his overall passivity.

33.Rd2 Rh1+ 34.Ke2 a5 35.Ke3 b6

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Maintaining flexibility. Black can move the bishop to a6 for play and has a solid structure to back it.

36.Ne2 Bd7 37.Ng3 Rh3 38.Rg2 Be6 39.b3 a4!

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A nice idea, aiming to weaken White’s queenside pawn structure. If Radjabov can trade the last pair of rooks, he’ll reach a bishop v knight endgame where only he can stand better.

40.Ne4 Rh1 41.Nf6 Ra1 42.c3 axb3 43.axb3 Re1+ 44.Re2 Rxe2+ 45.Kxe2 Bxb3

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Now with a material advantage, Radjabov has a win to play for in the classical Berlin Endgame. Black went on to win 23 moves later.

So what do these games tell us about playing the Berlin as Black?

  1. The Berlin won’t win games quickly. As evidenced by both games, endgame technique and defence are two critical skills needed to play the Berlin effectively. Black didn’t get an advantage until White erred playing for an edge.
  2. Patience in the key. Remember, the main reason why the Berlin is popular for Black is because the computer gives it a favorable evaluation with the computer. Once the queens come off the board, the game is about strategic gains for either side as White tries to compensate for losing the bishop pair.
  3. A Berlin Endgame is a good endgame. The biggest positive from today’s article. If White can’t effectively prove his compensation, he will be tortured in an uphill positional battle.