Although originally written in English (Chess Fundamentals), this is the most official beginner-to-intermediate book ever written. Because it was published in 1921, it is in the public domain. That means you can legally download the complete PDF in English, and many volunteers have translated it into Spanish (Fundamentos del Ajedrez).
Why it is official: Capablanca was a World Champion, and his method of teaching endgames first became the standard for all later official training programs. libros oficiales de ajedrez pdf gratis free
How to get it free:
Para encontrar esos libros esquivos, no te limites a escribir la frase larga. Usa estos operadores: Although originally written in English ( Chess Fundamentals
La palabra clave "gratis free" nos obliga a ser éticos. Evite páginas de dudosa reputación que pueden contener virus. Estas son las mejores fuentes legales o semilegales (dominio público): Why it is official: Capablanca was a World