Single-digit kyu to dan: the wall is consistency, not knowledge

The jump from single-digit kyu to dan is the most talked-about wall in amateur Go, and the players stuck against it almost always misdiagnose it. They go looking for more knowledge: another joseki book, another opening. But an SDK player already knows plenty. They lose to the same handful of recurring mistakes, game after game, and can't see them because they are their own.

That is what a stronger teacher is for. Hand them three recent losses and they find the leak the same way every time: you know the joseki but play it facing the wrong direction; you read a fight but stop one move short; you reach the endgame with no counting and give back a game you had won. The dan barrier is consistency and honest reading, not new material.

Lessons target your specific leak, not a generic syllabus. You bring games, the teacher names the recurring mistake, you drill it until it stops, and your rank moves because the thing that kept losing you games is gone.

Common questions

What rank is this for?

Single-digit kyu, roughly 9 kyu to 1 kyu, aiming at first dan.

I keep reading books and not improving. Why?

Past SDK, the gains come from fixing your own recurring mistakes — and a book can't see them. It doesn't know that you misjudge direction after a specific joseki, or that you fold in close endgames. A teacher watching your games does.