For newbies like me and others, who don't own the magazine; the link with the rules:
http://www.grognard.com/info1/korsun44.pdf
and aid (1 MB)
http://www.thewargamer.com/grognard/korsunaid.pdf
and tables:
http://www.thewargamer.com/grognard/korsuntab.pdf
at last;
The Errata on the Vae Victis website (the fourth image):
http://vaevictis.histoireetcollections. ... loads.html
Best regards
Pomakli