Analyze your chess game with the power of multiple Chess Engines! Leave your chess computer behind!/** FEATURES **/☆ Load and analyze your games from PGN file. Tested to work with pgn games from chess.com, lichess, chess24 and other online servers*☆ Full Engine analysis of the current game with verbose English commentary! Analyze games of Magnus Carlsen, Vishy Anand and other masters!☆ Save moves and variations☆ Paste PGN or FEN☆ Share PGN/FEN with other Chess apps like Droidfish or send via Email/Twitter☆ Manage and install new UCI engines. (Pro only)☆ One click analysis from iChess & Chess Book Study apps☆ New innovative feature to move back and forth by simply tilting your device. Now give your fingers some rest!☆ Play against Engine or let Engines play (current board position) against each other (Pro only. Tap engine name to see option)☆ Annotate games with symbols and comments☆ Auto replay games (Pro only)☆ Supports Engines like Komodo 8, Komodo 9 which use the "Open Engine format"
For more features, Tips and Tricks, please see : http://mychessapps.blogspot.in/2013/05/analyze-this-tips-and-tricks.html
NOTE:♚ Free vs Pro ($4.99) : Free version (a) has Ads (b) cannot install new UCI engines (c) cannot auto-replay moves (d) cannot set Auto analysis time >5s and (e) has some other minor UI limitations while browsing games.♚ Both Free/Pro versions have Critter & Stockfish engines. However Critter no longer works on Android OS > 5.0♚ This is not an app to play a chess game against the mobile or online or with friends♚ Online chess not supported♚ Importing external engines like Houdini, Rybka, Fritz, Hiarcs is currently not supported♚ To download more engines, pls see:http://mychessapps.blogspot.in/2013/05/analyze-this-install-new-uci-chess.html
http://www.stockfishchess.com/ (Stockfish homepage)
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*Note: While lichess is free and open source, other servers like chess24, chess.com have paid membership to access some features (which may include downloading pgn)