31 August 1941
Russian divisions south of Viipuri become trapped in Yläsommee - Porlampi 'motti' after Finnish 8.Division cuts the way to Koivisto.
18.Division's artillery fires the real 'Mainila shots'.
President Ryti gives Mannerheim permission to extent the Karelian Isthmus offensive couple of kilometers past the pre-Winter War border.
The decision is partly to appease the Germans, who offered Finland 25,000 tons of grain and partly strategic; to straighten the defensive line.
Russian POW reveals that there are "300" radio detonated mines in Viipuri.
Finnish daily losses: 265
Correct address is written on a shell (to Mainila).
Military parade in Viipuri.