The course also trains you to punish your opponent’s mistakes, helping you fight the passive mindset that holds so many players back.

In the videos, I also introduce my CLAMP checklist—a powerful tool from my newest course on blunder-checking. #chessable #chesspunks #chesscom

That is so nice to hear! ☺️ I poured my heart and soul into the video part for the blunder-check course.

Thanks for posting this!

It reminded me of this video I recorded a while ago. www.youtube.com/watch?v=V9a8...

We explored strategic decision-making, especially around piece exchanges, inspired by his book Mastering Chess Exchanges (co-authored with Renier Castellanos).

www.youtube.com/watch?v=9hXT...

Yes! Confirmation bias kicks in!

Yosha, this is excellent feedback from such a strong player like you! 🙏☺️

Some of my students are seeing all-time rating highs after they diligently studied this course. I am very hopeful!

Thank you so much! :)

#chess #chesspunks #chesscom #chessable #blunder-check

I am super excited about the impact of this course on your chess progress.

Thanks for your continued support ❤️

Let's put a CLAMP on those blunders!

I have already received great feedback from the alpha and beta testers of the course: "I really thought your course was absolutely outstanding and I’m up to my all time high of 1250 chesscom, and over 1600 lichess after studying it.”

It probably works!!

And no—it’s not about passivity or fear.

This course teaches you to verify your ideas with confidence.
Some of the most powerful exercises challenge you to play seemingly blunder-looking moves, but calculate just one or two plies deeper to prove they work.

What is truly limiting your performance—your ceiling or your floor?

Improving your ceiling (strategy, calculation, openings) is great.

But if blunders keep ruining your games… then raising your floor should be your top priority.

Blunder Check helps you do exactly that.

As a cognitive scientist and coach, my mission is to identify the biggest bottlenecks in a player's progress—and give you tools that generalize.

Unsafe moves and blunders are arguably the biggest bottleneck.

That is correct, thanks! :)

Thank you! :) The idea is to go for a compact but complete d4 d5 course!