Features \* Browse Scid (Shane's Chess Information Database) files, optimized for databases with millions of games \* Header search using player names, sites, events, dates, results, ECO, ELO ratings,… \* Search games by material and position \* Favorites \* Copy/paste games and positions to/from clipboard \* Edit board \* Support for variations \* Replay the game with a configurable delay between moves (autoplay) \* PGN import (also includes import from Internet) \* Analysis with included chess engine: Stockfish 10; you can add additional UCI engines for analysis \* Study mode \* Experimental write support and marking of games for deletion (needs Scid for PC to compact database after marking games for deletion) \* Retrieve positions from external programs, such as https://play.google.com/store/apps/details?id=com.kgroth.chessocr (ChessOcr, non-free) License \* GNU GPL v2 \* Source: https://github.com/gkalab/scidonthego Developers \* Most of the GUI code was taken from Peter Österlunds DroidFish and re-released under GPL v2 by the authors permission. \* Scid integration by Gerhard Kalab. \* Various enhancements by Alexander Klimov. \* Manage UCI engines by Larry Isaacs. Permissions \* Storage for accessing databases stored on the SD card \* Internet access for downloading PGN files from The Week in Chess (http://www.theweekinchess.com/twic/)