To be honest I was not particularly aware of Lev Polugaevsky until I came across his game against Eugene Torre, where he demonstrated his hard-work and creativity.
This is a really inspiring illustration to show that skills can be cultivated with the hard-work and dedication. Nowadays it might be easy to prepare like this with the aid of computers, but this game was played in 1981 when chess programs did not exist. His book Grandmaster Preparation is considered to be the one of the best chess books of all time by many Grandmasters.
Those who can not afford coaching due to financial constraints may find this presentation by GM Alejandro Ramirez very useful. He comments on some of Polugaevsky’s best games including these:
Lev Polugaevsky vs Mikhail Tal, USSR Championship 1969
Yehuda Gruenfeld vs Polgaevsky, Riga Interzonal 1979,
Polugaevsky vs Eugenio Torre, 1981
Polugaevsky vs Boris Gulko, 1975.