SPOILER ALERT(rot13.com)

Hint #1: First card played: Gur gjragl-bar pneq.
Hint #2: Position of first card: Yrsg bs lbhe frira.
Hint #3: Second card and position: Ernq gur abgr. GYQE: Friragl bar gb gur evtug bs lbhe frira naq qb vg ba gjragl sbhe.
Should be easy after this.
Hint #4: Strategy: Gur guerr gjb'f naq guvegrra vf hfrq nf pneqf gb qvfpneq