Zadx vs Opening Prep

ZadX is a very simple and yet difficult game.

Opening Prep: Chess Trainer is a chess opening trainer for studying and memorizing chess openings from your own PGN repertoire. Import PGN files or paste PGN text, organize your opening repertoire, and train chess lines move by move directly on the board. Opening Prep: Chess Trainer is built for focused opening preparation, repertoire study, and fast memorization of opening variations. Train as White, Black, or both sides, review repertoire trees, continue previous training sessions, and improve difficult positions with targeted repetition. Perfect for tournament preparation, online chess, and daily opening practice. Features • Import chess repertoires from PGN files • Paste PGN text directly into the app • Train chess openings as White, Black, or both • Practice opening lines move by move • Continue previous training sessions anytime • Continue training for a specific repertoire • Study repertoire trees and branching variations • Preview repertoire lines before training • Autoplay repertoire variations on the board • Tap moves in notation to jump to any position • Track mistakes, accuracy, and training streaks • Train difficult positions and weak opening lines • Quick actions for new sessions and hardest positions • Optional move sounds and haptic feedback • Works fully offline with local storage • No account required Opening Prep: Chess Trainer is a lightweight PGN repertoire trainer designed for serious chess opening preparation without unnecessary complexity.