Concordia solitaria - l'explication et la partie solo

About Concordia: Solitaria, from BoardGameGeek:

A solo and 2-player expansion for Concordia by Mac Gerdts and Frank Lamprecht. (14+ years, playtime approx. 60 min) In CONCORDIA SOLITARIA you compete alone or in a team of two against the tricky opponent CONTRARIUS. As the cards you play also determine the reactions of your adversary, only skillful planning leads to victory. In a two player game you can either compete with CONTRARIUS as a cooperative team or challenge it individually. CONCORDIA SOLITARIA may be played on any of the maps and with any other expansion for CONCORDIA. Requires either the base game CONCORDIA or CONCORDIA VENUS to play. Content: 72 cards, 4 dice and rules Difficulties: standard, veteran and expert