For a gambler deeply embroiled in unfavorable circumstances, reviewing the cards in hand is both a painful and hopeful endeavor. Painful, because the cards are truly terrible; hopeful, because one wishes the opponent's hand is even worse, or that they'll make a mistake, giving one a chance to turn the tide.
Roland was no gambler, and after the lessons of Old Charlemagne, the Republic, too, would not gamble recklessly with its national fate. Yet the game between great powers resembles a gambling match in many ways—preparing chips and cards, observing the opponent's plays and subtleties, formulating corresponding strategies, disrupting their rhythm, steering the situation to one's advantage, and ultimately, claiming victory.
To prepare for the coming contest, Roland had to meticulously assess the state of affairs and the cards he held in hand.