Chessdiags is the ultimate chess problems app
-Solve over 1400 checkmate diagrams
-Improve your chess skill !
-Play against the strong Carballo chess engine
-Create your own puzzles
-Submit them to other users
-Create your own chess problem repository
ChessDiags is open-source, fork the code and contribute on https://bitbucket.org/olevitt
The app is totally free ! No ads !
Follow me on twitter @OLevitt
Internet permission is only used during problem database update (mandatory only on first launch)
"Application data" permission is required for sony smartwatch
LiveWare extension for SmartWatch