Chess Opening Tactics Trainer

Tactical puzzles focused entirely on chess openings. Adaptive difficulty, Stockfish analysis & 100% offline play. Your openings will never be a weakness again.

Master chess openings with 50,000+ tactical puzzles — the largest opening-focused puzzle collection available. Sharpen your Sicilian, Queen's Gambit & every opening you play.

WHY THIS APP IS DIFFERENT Most chess apps give you random puzzles from random positions. Every puzzle here comes from a real opening — so you train the exact patterns you'll face in your own games. Stop memorizing moves blindly. Start understanding why they work.

50,000+ OPENING PUZZLES The largest collection of opening-focused tactical puzzles, organized by ECO code and adaptive difficulty. Each puzzle is drawn from real grandmaster games. Your ELO rating adjusts automatically so you're always challenged at the right level.

OPENING EXPLORER Browse any opening line interactively. See win rates, popular continuations, and grandmaster games for every position. Compare moves, evaluate plans, and build a repertoire that fits your style.

PLAY AGAINST STOCKFISH Test your preparation against one of the world's strongest chess engines. Choose from 8 difficulty levels and discover where your openings hold up — and where they break down.

PUZZLE SMASH MODE Race the clock. Solve as many opening puzzles as you can before time runs out. Build speed, sharpen pattern recognition, and beat your personal best.

DAILY CHALLENGE A fresh set of puzzles every day to keep your skills sharp and build a consistent training habit. Never miss a day of improvement.

BUILT FOR SERIOUS IMPROVEMENT → Adaptive ELO rating that tracks your progress over time → Smart hint system — nudges without spoiling solutions → Chess960 (Fischer Random) support → Detailed move analysis with engine evaluation → Clean, distraction-free interface for focused training

100% OFFLINE No internet required. Train on the subway, on a plane, or anywhere life takes you. Your chess improvement never stops.

FROM BEGINNER TO MASTER Whether you're rated 800 or 2200, the adaptive difficulty system meets you where you are. Start with fundamental opening traps and work your way up to complex grandmaster-level combinations.

Turn your openings into your greatest weapon.

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