Chess Lesson # 56: Obstruction or Interference: the most elegant Chess tactic you will learn

Chess tactics are mandatory if you want to become a good player. In this lesson, you will learn about obstruction (also known as interference). In my opinion, this is one of the most elegant tactical themes out there. Your coach will teach you the pattern and of course help practice it enough for it to stick. In addition, you will see how you can practice obstruction and other tactical themes on your own. If you want to master this, you must practice consistently!

00:00 Intro
01:45 1st obstruction / interference exercise
03:21 2nd obstruction / interference exercise
04:43 3rd obstruction / interference exercise
05:50 4th obstruction / interference exercise
08:04 5th obstruction / interference exercise
12:40 Learn how you can practice Chess tactics on your own

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My Book Recommendations:
First tactics book:
Mixed tactics book:
Advanced tactics book:
Advanced tactics book (II):
Carlsen’s book (excellent):
Kramnik’s book (excellent):
Pirc Defense book:
Endgames book:

Learn how to play Chess the right way from beginner to master level. National Master Robert Ramirez will take you up the pyramid by following a proven Chess training program he has been improving and implementing for over 10 years.

Benefits of Playing Chess:
​- Promotes brain growth
– Increases problem-solving skills
– It exercises both sides of the brain
– Raises your IQ
– Sparks your creativity
– Teaches planning and foresight
– Teaches patience and concentration
– Optimizes memory improvement
– Improves recovery from stroke or disability
– Helps treat ADHD
Chess is an intellectual battle where players are exposed to numerous mental processes such as analysis, attention to detail, synthesis, concentration, planning and foresight. Psychological factors are also present on and off the board; playing Chess stimulates our imagination and creativity. Every single move a player makes is the result of a deep analysis based on the elements presented on the battlefield.

Chess in its essence teaches us psychological, sociological and even moral values. In a Chess game, both players start with the same amount of material and time. The fact that the white pieces move first is considered to be practically irrelevant —especially because a player typically plays one game as white and one game as black. Consequently, the final result of the battle solely depends on each player. It doesn’t matter if you win by taking advantage of your opponent’s mistakes or by simply avoiding mistakes yourself. Truth is that Chess is an extremely individual sport and our defeats can only be blamed on ourselves and no one else. And this, in the end, only benefits us because we learn to be and feel responsible for our actions and never come up with excuses to justify ourselves.

We also learn that when it comes to our victories on the board, our opponent’s mistakes play a more significant role than our own skills. Let’s not forget that a Chess game without any mistakes would be a draw. This way, Chess provides us with another valuable life lesson: be humble at all times.

About National Master Robert Ramirez:

With an outstanding background as a professional Chess player and over 8 years of teaching experience, Robert Ramirez brings both his passion and his expertise to the board, helping you believe & achieve!

Robert Ramirez was introduced to the fascinating world of Chess when he was 5 years old and has participated in prestigious tournaments such as the World Open Chess Tournament and the Pan American Intercollegiate Team Championships. Thanks to his performance, he has earned his National Master title from the United States Chess Federation.

Currently, NM Ramirez and his carefully selected team teach at several private schools in the counties of Miami-Dade and Broward and they also offer private lessons. He says the key to their success as Chess coaches is their ability to adapt to every student and to make lessons fun and interesting for students and even their family members.


  1. I've watched your videos on the Pirc already at least 2-3 times each. These more general concepts are at least as much amazing. Your content is solid, I know you will gain in audience very soon. Wish you all the best !

  2. Awesome explaination Coach👍👍
    Thx from India🇳🇪🇳🇪🇳🇪

  3. Once we understand the idea, it's easy to find the move. Thanks for these videos. I have one request, please upload a video about how to analyze my own games and find out my mistakes, and how to apply what I learned in future games. When I analyze my games using an engine, I only find my blunders and missed wins and I realize that I need to practice tactics, but I already know I should practice tactics. I cannot find any practical lesson from my analysis which I can apply in future games.

  4. Thank you for these videos! You definitely deserve more subs.

  5. I haven't watched the video till the end, but I think the right move is A4, the even if the black takes en passant, we have a passed pawn and the Black king is outside the square.
    P.S. I'm wrong.

  6. I think the first one is first f6! then Kxg2 then a4. If I did calculate true the a pawn will be queen and black king is not gonna be able to catch him.

  7. That's a fascinating concept! I looked at the position for 5 mins at the beginning of the video, went trough the same thought process as you (since i have seen some kind of pawn blocks in my games), figured out that i didnt have time to push it all the way but couldnt figure the exact moves to block the king. This puzzle was really far from what I'm used to thinking in such positions haha. I could only find c6 but couldnt figure out what if just d6, ignoring my push (excluded d6 immediatly because i thought about cxd6 for less than a second – white pawn takes back (cxd6) seemed like the natural reply, c6 instead of takes was hard to even think about). Later in the video it turned out even taking wouldnt work cuz of the route on the 8th rank for the black king. Didn't even think about using the pawn on f6. Just amazing! And the opening and middle game strats, that included blocking the defender i found really helpful! Anyways I'm continuing my progress, climbed up to 1350 on Thank you, coach!

  8. Sir, this was really difficult for me despite being a 1500 in puzzles from the easiest 1 , this is why I play chess, tactics make it so 😍 beautiful…. Ok I need more tactics tutorials like this.

  9. Hey guys, I actually found it on my first try!!! Yay!!!! (I am a big fan of your videos, please post more 👍)

  10. Hi, can I ask which video that explains the rule of the square? Btw really good lessons. Thank you so much

  11. Thanks so much for all these interesting lessons. Please don’t give up
    Did you already prepare lessons on Sicilian defense ? Thanks

  12. pls make a video on pawn structures alone
    often in videos people say that the pawn structure is good or it is bad and i dont really understand on what basis they are saying it
    i know that double pawns and isolated pawns etc contribute to bad pawn structure but even if they arent present still some pawn structures are bad could you explain them please

  13. at 4:33
    what if white takes with the rook
    R7xe5 fxe5, dxe5
    wouldnt white have a better position ?
    also what should be blacks next move ?

  14. I'm in love with this playlist ❤️
    Very educational and fun , keep up the good work ! ♟️

  15. Hello Coach, did you recognise me? I have many questions to ask today:
    Firstly, I am making an excellent progress on your lessons and tactics too. I can identify mate in 1,mate in 2 and sometimes mate in 3 too. Besides forks, swekers etc. But the main thing is I am stuck at 733 and the main problem is I blunder too much. How to avoid this, sir?

    Secondly, I get many endgame positions and the one taught by you like the Philidor, Lucena etc. But where to practice these positions? And moreover the endgame book you suggested me, was too difficult to understand. There are just moves not the explanation behind the moves. What to do then?

    What about openings? Regardless of anything, the one that makes me afraid is opening. If suppose I am white and I played 1. e4 my opponent may start with 1….c5 the sicilian. I get afraid sometimes, because I do not know the ideas behind the openings.

    Can you name some Chess Analysing apps for PCs, actually provides just 1 analysis for a day. And the problem is I cannot purchase the Premium version. So I need analysis apps to analyze my games.

    Thank you in advance for the response. I will catch up with you soon. ❤

  16. Hello Coach, I hope you recognised me. I have been going slow because I want to understand everything nicely. And about Evaluation I asked you before in a video of yours. Basically, I have learnt something new recently. It's about calculating evaluation. An IM named Levy Rozman or namely Gotham Chess on YT, told that there are four steps to calculate evaluation:
    1. King Safety
    2. Piece activeness
    3. Pawn Structures
    4. The no. of squares you control in your enemy side a.k.a Space in chess.
    I have been thinking for a while. And I found it useful. Do you think this the way titled players evaluate a position? Do you calculate evaluation in this way?

    Thanks in advance for your reply. BTW, love your videos. You will really succeed in future. ❤💪

  17. Thaks again for your tutorial. Did i miss a video about a rook on a 7th rank?

  18. I love it. This series is just so good. Ive never thought of this idea of obstructing in endgames. In midgame its a bit more intuitive i guess

  19. I've just joined your channel. Seems like it could help me. Been in the shop also. Thank You for your work. Be Well….. Peace

  20. This is elegant! It reminds me of Nimzowitsch's declaration that prophylaxsis is actualized in both defending moves, and more active moves to protect and promote position.
    I analyzed the main puzzle well, but the specific moves to the pawn blocks eluded me. So, I have to say "no cigar," but I won a few puffs from it:).

  21. I actually do enjoy studying endings. Thanks for analysis Robert.

  22. I think im doing something wrong everybody here has such a high rating compared to mine, they are like around 1200 meanwhile in a month and a half time i only got to 900

  23. Wow, really tough but important example in the intro! Thank you so much for explaining 🙂

  24. 31/10/21
    7:29 AM
    I like chess More than ever because of you Coach …..💯 This is the best Playlist for chess beginners …..👏👏♥️♥️♟️♟️

  25. I recognise you as my coach.
    Thank you for the this video series

  26. Ten years since I played a game, I watched your lessons and won my first game back!😎

  27. 1. f6. gxf6
    2. Kxg2 f5
    3. a3 bxa3
    4. bxa3 f4
    5. a4. kg4
    6. a5 f3ch
    7. Kf2 h5
    8. a6 h4
    9. a7 h3
    10. a8Q h2
    11. Qh8

  28. Sorry but……at 9.58 doesn't the king make it on time?

  29. It's cool that you are aldready at 52.3K subs in a year since this video

  30. Amazing! I found it but no for the good reason 😅

  31. I would call this anything but boring. I felt pretty good and had that initial position all worked out–or so I thought. I missed that required very first move. Tough puzzle but definitely worth the time.

  32. You have to study harder, you make a big confusion between the two! They are different things, not the same! The only interference is number 3, and number five IF Knight moves to d7 (interfering with the Knight g4 defense). All the other are simple blockade (obstruction). Good luck studying better next time, you did a great job!

  33. Thanks NM Robert for you wonderful end game strategies. After I view your video, I got similar end game where I have the extra pawn and I used your strategy to cut off the opponent kind (2 columns from my pawn) and used the exact strategy to force my opponent to exchange the rook and promote my pawn to Queen

  34. I figured it out finally, Obstruction indeed.

  35. I would try on f6, it seems dumb, but you disconnected the h and g pawn… Then go Kxg2 and then occupying the G column, when black start push his f and h pawns we will start pushing the a pawn… Hope did it right, to be honest i didn't spent so much time on it… 1/2 mins

  36. The puzzle was really hard and it took me about a minute to solve it (in my head). Very nice!

  37. I didn't succeed in all the puzzle, but I got the right answer to a fair amount. I'll practice. Thanks coach!

  38. Thank you so much for these lessons can’t find stuff like this anywhere else keep it up 👌

  39. love your channel dude, its the only helpful one for me as the rest im unable to catch on with, extremely grateful for the content you put out!

  40. What on earth happened at 9 : 29 when your black pawn moved diagonally from B4 to A3? Why not to B3?

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