ChessGenius can only be purchased from the Apple App Store. Price in US is $5.99. Price elsewhere is set by Apple and depends on exchange rate and local taxes. All program updates will be free.

[Buy now from Apple App store].
Alternatively go to the Apple App store and search for ChessGenius

• Runs on all iPhone, iPad and iPod touch devices with iOS 3.1 and higher
• Small and compact
• Incredibly strong play
  Excellent play even on the 'instant' level. Does not require a network connection.
• Thirty three playing levels
  13 easy levels. ChessGenius makes deliberate mistakes.
  Ten time based levels. Instant, 1 sec, 2 sec, 3 sec, 5 sec, ... 3 mins.
  Ten Blitz levels. Whole game in 1 min, 2 min, 3 min, 5 min, .... 120 min. The Chess clocks count down in these levels. You lose if you run out of time.
• Thinking information. (Analysis)
  Show analysis Option. It may, for example, show:
  "1.03 05 cxd4 Nxd4 Nc6 Bb5" This means that:
  ChessGenius is winning by 1.03 pawns. Search depth = 5, and line of moves. ChessGenius is planning cxd4 and expects Nxd4 in reply etc.
• Landscape
  Rotate your device to play with landscape display.
• Chess Clocks
  Total White and Black time and move time.
• Make moves by dragging or tap and tap
• Set-up position
  Any legal position can be entered.
• Take back and Step forward
  Take back moves to start of game and Step forward to end of game. Easy take back and step forward with toolbar.
• Hint
  Let ChessGenius suggest your move.
• Opening name
  For example ChessGenius may display "B12 Caro-Kann defence".
• Next best move command
  After ChessGenius has played a move "Next best move" will force ChessGenius to take back its last move and compute the next best move. This is useful for forcing ChessGenius to play a particular opening and for analyzing positions.
• Players
  Play against ChessGenius, against another player or watch ChessGenius play itself.
• Analyze game
  Like 2 player mode but ChessGenius calculates continuously and shows its thinking. Useful for replaying games to see where mistakes have been made.
• Rules of Chess
  Understands all the rules of Chess including, en-passant, under promotion, castling, draw by repetition and the 50 move rule. Announces a draw if there is insufficient material to win.
• Save and Load games
  Games can be saved and loaded to PGN files. Games can be sent by email and databases downloaded from the internet.
• Tutor option
  ChessGenius will warn if a blunder / weak move is played and give the option of take back.
• Board colours
  Choice of 7 board colours.
• Show legal moves option
  After selecting a piece ChessGenius shows where the piece can move to.
• Show last move option
  ChessGenius can indicate the previous move.
• Championship
  A 'Championship' icon is displayed if you have not used Hint, Taken back moves or viewed the analysis. Can you beat ChessGenius without help?
• Five piece sets
  Chose between Modern, Royal and Classic color sets (designed by Bryan Whitby) and the Alpha and Merida black and white sets.
• Free updates

• Bug fix. Game and Settings were not always restored on startup

• Easy import / export of database files with iTunes file sharing
• Bug fixes for iOS 6

• Now designed to run on iPad as well as iPhone and iPod touch
• High resolution graphics for iPhone 4G and iPad
• Improved graphics. Board shading, extra piece set and board color
• Copy and paste PGN games
• Bug fixes
• Support for French and Italian languages

• Games can be exported by email
• PGN databases can be imported from internet
• Handles multiple PGN databases and each database can contain multiple games
• New hi-resolution graphics. 4 piece sets
• 3 new easy levels for novices
• Rotate to Landscape view now optional
• Support for German Language