BoldChess: Train to 2000+ Elo

Stop dropping pieces. Start seeing the winning move. BoldChess Trainer is a chess training app for club players who want to calculate cleaner, master tactics and reach 2000+ Elo. Solve hand-picked puzzles, drill openings and analyze your games, all in one place. Pay once, no ads, no subscription. WHY IT IS DIFFERENT • Pay once. No ads, no subscription, no locked levels. • Your mistakes become puzzles: send the blunders from your analyzed games to a personal deck and solve them later. • The same hand-picked tactics return in a new order. Repetition builds intuition, and nothing is hidden just because you solved it once. • Puzzles are not labeled by theme, just like the positions in your own games. You find the winning idea yourself. • Everything in one place: puzzles, Stockfish to play, an opening explorer and a game analyzer. • The analyzer explains in plain words why a move lost, like "Loses a queen" or "Allows mate in 2". PUZZLE TRAINER • 1,222 hand-picked chess puzzles: checkmates, winning an advantage and saving drawn positions. • Numbered sets of 5 to 50 puzzles, or a random mix. Any move that mates counts as a solution. • Progress tracking: passes per set, solving times, a daily streak and session history. • Leave mid-session and pick up where you stopped. PLAY THE ENGINE AND LEARN OPENINGS • Play Stockfish at levels from beginner to full strength, or at a rating you choose. • Pre-moves: line up your reply while the engine thinks. • Hints, best-move arrows and an evaluation bar when you need help. • Opening explorer: move counts and results from rated games of 1800+ players, with the name of every line. • Opening practice: drill a named line, or save your own lines and practice those. • Every game you play against the engine is saved. Continue it later, or open it in the analyzer with one tap. GAME ANALYZER AND PGN VIEWER • Load any PGN or FEN, or set up a position on the board. • The engine follows the board and shows its two best lines, with arrows and an evaluation bar. • Analyze the full game: each move is graded by the winning chance it gave away, with accuracy for both sides. • Try your own moves from any position. They are kept as lines you can step through. • Share a game as PGN, or open a .pgn file from another app. GOOD TO KNOW • One-time purchase. No ads. • Requires Android 13 or newer and an internet connection. • Your games and progress stay stored on your device. • Powered by the Stockfish chess engine, free software under the GPLv3.