We have completed a huge task of searching and choosing the absolute best (worst?) mistakes that secretly plague most kyu players’ games. Tactical mistakes, strategic mistakes, psychological mistakes — this course will help you get rid of possibly the last remaining shackles that slow you down on your way to 1 dan.
This is a direct sequel to the course Typical Mistakes That Wouldn’t Let Us Get Better.
Suitable for: 10–1 kyu
A huge thanks to: Alexander Dinerstein for helping with examples for the course and Marina Ismail-Akhunova for designing the Nutcracker.



Vadim is a wonderful teacher as usual, but I'm surprised that this course is marked as being suitable for 10kyu and higher. I am 15kyu on OGS and found this lesson extremely helpful and pertinent to my play, and wish I'd watched it sooner instead of being scared off by the high level floor.