WMD: From Soltis's book Soviet Chess 1917-1991:
For serious chess students, the training was intense. Vladimir Zak, who headed the chess section at the Leningrad Palace for more than a quarter century, told his youngsters to spend 12 to 16 hours analyzing each of their games. In Roads to Perfection he urged five steps:
1) Play over the game quickly, in 15 or 20 minutes, "to awaken your thoughts."
2) Play it over in the course of an hour to "synopsize the key moments."
3) Analyze the key moments in detail over three to four hours.
4) Analyze the opening for three or four hours.
5) Play the game over once more and write annotations, taking four to five hours.
