"15 minute drills"

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Avatar of hreedwork

http://www.chess.com/article/view/the-legendary-15-minute-drill

Thoughts? 

Avatar of gringubbe

Interesting! It might be hard for a coachfree improver to find mix problems of a suitable level?

Avatar of hreedwork

Very good question! You could go to the original post, and ask that question. Maybe someone has an answer...