OpeningTree - Chess Openings
The opening book is made from about 345,000 games from the last ten years with both players rated 2300 and up. The stats next to moves are how many games resulted in wins, draws or losses. The concept originated from computer opening books as if we can open up the book and see the moves that people play in response to chess opening positions.
The analyze button on bottom of app is to flip between viewing the openings move table or seeing Stockfish engine analysis. +1.00 score means white is ahead a pawn. -1.00 score means black is ahead a pawn. There is a move button to make the engine make the current best move and this can be used to play a line out.
In the Actions menu PGN game files can be opened. OpeningTree asks for the permission to access device storage for the purpose that when the user goes to Open PGN our file chooser will work. The app also comes with some installed PGN files on Open App's PGN menu item. To ensure speed in loading, it will only read/load a max of 2500 games. With bigger files users will only see first 2500. The menu option to open the apps PGN vs open any PGN will work with no special permissions.
There is a Save Board to PGN option on the menu. It saves the current moves to a file OpeningTree will create on first save. . This allows the users to move data out of the app with the mail games button available in the game list view. Games are saved with white and black players names named after the opening such as Sicilian vs Sicilian or QGD etc.
While users do not pick the openings they study ahead of time, they start with all the first moves in the tree such as e4, d4 and Nf3 arranged by most winning, after making a few moves the opening name will display below the board such as King's Gambit or French Defense to alert the user what opening they have moved into.
Category : Board
Reviews (28)
This is the best app out there. the computer analysis the move via stockfish the worlds most powerful engine and then suggestions for both sides are displayed but you can play some other move to check out whay would happen if the user deviates from the best path ....options for all 8 cores lets you to a depth of 23 future moves almost instantaneously which is on a wold chess champion level ...keep up the good work
"engine does not appear to start. In setting you can force it to use a 32 bit version which may be needed. Force close app after the change before trying the engine again" - this the message I got on my device. Please fix this.
Trash app. Not sure what it's good for. Doesn't tell u the name of the opening, the win/lose % or anything useful. Just a chess board where u get to move pieces around, and something below it listing all possible moves that can be made after you make a move.
excellent... but wish there was a help to explain the move figures. win, draw, lose then %. what is the %. no way to see what it is. it must be relevant in selecting an option. otheerwise itis a great tool.
Excellent application. Very useful and aside that it is free! i tried this application vs my Fritz with the engine ASMfish (draw) and Komodo 9 (OT won easily) using my laptop computer to test its (OT) strength and indeed very strong application for analysis. Thank you developer/s!Pls maintain this application generally free.
The app is super great, you just need to know how to use it and you will definetively appreciate it. Only problem it does not have the latest book moves.
Very small database, doesnt contain several variations and goes blank after about move 9 even if games previously showed up for the given move. Useful only for beginners who want to study the first few moves of mainlines
Very helpful for beginner. i wish i could find two or more strong move suggestion from the engine instead of one.
Excellent app, I couldn't get all the correct move and idea before, but after using this app on IM's and GM's games, I now know. 10 stars for app idea and 4 stars for app(it's UI is disgusting on mobile app)
Good app. Stands apart in the crowd as it is a freebie. Also tells the names and variations of openings.
Its very good its just there are too few games on this database to get a reliable result in studyingg openings but it is free so yes.
How is this 4 stars? It doesn't tell you what the best moves are, and it's really hard to navigate. I literally used it for 10 minutes and uninstalled. Terrible app
Extremely useful for my reacquaintance with the chess game after a 50 years lapse. One of the best.
There are no openings included. You need to get hold of these on the Web and upload. The forum helps but some of the sites suggested are not advisable. Labour intensive considering you pay for it.
Cannot start the engine stockfish using Windows 10 Home. Not including in the settings to use 32 bit.
3.5 actually. Has its limitations. Takes you to 10 moves sometimes and then analysis by Stockfish but sometimes gets to only 5 moves then Stockfish analysis like if you try 5......h6 in the Janowski variation of the QG declined.
Great app. My go to for analysis. My question would be how to load pgn from another program. When I find the file I am looking for via OTChess, I can't open it. Please advise.
This is what I'm looking for..I can analyze my stupid mistake, very efficient chess application. Superb 4me.👍7star
The stockfish engine won't start and the option to select 32 bit engine is not accessible
Nice app!! Will you please put the arrows like droidfish and allows to install another chess engine like komodo and etc tnx!
The engine doesn't work. It works for my iPhone version.
I've just downloaded this app tried to get on it and just nothing takes me back to open the game is this app not available on android can someone let me know please thank you
Why cab I castle on move 1 and then take another move as white and pressing start and move in analysis just breaks the hole thing, things are happening none that I can see
Perfect. Cant believe its free.
Add arrows in both white and black pieces for engine result.
app can not be moved to external SD memory
Very less number of games are in database
Very nice Chess pgn reader app. This app has the added bonus of a full opening tree, plus you can input your own moves on the fly and save. The games you save to the app pgn are sorted by opening, which is very handy if you're bringing games over from lichess, for example. Plus Stockfish 10. I'm always willing to pay money for these apps, but big time thanks for making it a freebie! Great shader graphics, too.