OpenChess vs Blunder

Learn chess openings with OpenChess: An Opening Explorer. Play against the computer, or play as both sides, and be shown the lines that are within any opening that you are interested in learning. Want to learn the Sicilian Defense or the Queen’s Gambit? Choose that category and play against that a computer that only follows lines within that opening category. Wany to focus on learning all of the openings that start with a specific move, such as pawn to “e4”? This category can also be selected, and you can play against a computer that only plays lines that start with “e4”. The chess engine in this app is not Stockfish, and it does not look very far ahead. It is meant to provide a decent base evaluation and allow the majority of the reason behind the evaluation of the current position to be shown to the user. The following information can be shown to the user: • Positional advantages for each piece type (pawn, knight, bishop, rook, queen and king) • Piece value advantages for each color • Mobility scores for each piece where mobility plays a big role (bishop, rook, queen, king) • Pawn advantages and disadvantages (passed pawns, isolated pawns, backwards pawns, doubled pawns) • Total value of pieces attacked by each color as well as total value of pieces defended by each color A lot of chess games are won and lost within the opening moves, this app was designed to help players learn solid openings that either help them gain a winning advantage out of the opening, or at the very least help them not lose due to the opening moves played. Terms of Service: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Take a photo, open it in Blunder, and start exploring a chess position. Super fast! Blunder turns photos and screenshots of chessboards into interactive positions, with quick access to the camera and your photo library. FROM PHOTO TO POSITION - Recognize boards in screenshots and photos, including photos taken at an angle. - Automatically detect the board orientation. - Infer whose turn it is from highlighted last-move squares when available, or change the side to move yourself. EXPLORE THE BEST MOVES - View Stockfish analysis powered by Lichess. - Choose how many alternative lines to show. - Tap moves in a line to explore the continuation. - Choose an analysis time and available engine options. - Switch between the Blunder analysis view and the Lichess view. BUILD YOUR CHESS LIBRARY - Revisit recent games in a visual board gallery. - Save favorites and organize positions into folders. - Sync your library with iCloud across iPhone and iPad. - Turn off automatic history while keeping your favorites and organized games. SHARE AND CONTINUE Share positions as FEN, or open them in Lichess or Chess.com. Blunder requires iOS 26 or later. Internet access is required for Lichess analysis. Recognition results can vary with image quality and board design. BLUNDER PRO Your first 20 scans are free. Blunder Pro unlocks unlimited scans with a monthly or yearly subscription, or a one-time lifetime purchase. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the period. Manage or cancel them in your App Store account settings. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://lucas.io/privacy