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The Amethyst Academy

Study Leonard's 15 principles and the tactics that power them — checks, captures, skewers, pins, discovered attacks, and mate-in-1s — plus opening guides for the Caro-Kann, Sicilian, Italian, and London System.

L3nnyB23 chess puzzle — what would you do here, as Black?

Puzzle of the Week

What would you do here, as Black?

A knight on f7 forks the king and queen — but the position is full of counter-threats. Train your eye for checks, captures, and threats, and the right move reveals itself. This is the kind of thinking the 15 principles are built to sharpen.

Lessons coming soon

The academy is being assembled. Leonard is adding his principles, examples, and practice positions. Check back shortly — or visit the admin dashboard to preview draft lessons.

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L3nnyB23 Chess & Books

The official home of Leonard J. Barr — chess educator, author, and creator. Learn chess for free through 15 principles forged over a lifetime of play.

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Leonard J. Barr

"L3nnyB23"

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