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tChess Pro is the high-quality, critically acclaimed chess game with the richest features for the iPhone, iPod touch, and iPad. It's perfect for every player:

Not everybody is a chess master! Most chess games are too strong or just make random mistakes at easier levels. tChess Pro has unique algorithms to simulate human opponents.

tChess Pro has a top-tier chess engine. (Over 380 ELO points stronger than Caissa Chess.)

tChess Pro's Analysis Mode is like having a chess master in your pocket. You can get the engine's "expert opinion" about any game or position in real-time: which side is winning, and the best sequence of moves. Just like a professional desktop chess package.

More key features:
- Perfect for 1- or 2-player games
- Strong computer opponent
- Play against any ELO rating from 500 to 2500
- Integrated "Learn Chess" e-book app (Apple Staff Favorite!)
- Opening Library feature lets you explore chess opening theory as you play
- PGN Database feature lets you download and view PGN files
- Support for 3-stage time controls with Fischer increments
- Position Editor to enter positions from books, newspapers, etc.
- Save and load games; export them in standard PGN format
- Use the Profile feature to play rated games against the computer and track your progress

tChess Pro is developed by Tom Kerrigan, author of the TSCP and Stobor chess engines.

iOS Store Category:

Primary: Games

Secondary: Strategy

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Version History

Launched Nov 05, 2008 (about 12 years ago).

Releasing new versions every 5 months, on average.

Dec 13
Version 1.9.6

- Fixed a problem with opening PGN attachments

Aug 26
Version 1.9.5

- Fixed a bug that was making it difficult to tap the Annotations (pencil) button

Aug 05
Version 1.9.4

- Users can now choose to store PGN files in local storage or in iCloud Drive
- Removed the previous system of synchronizing PGN files via iCloud

May 19
Version 1.9.3

- Fixed a bug with the "Edit Position" feature

May 17
Version 1.9.2

- NOTE: This version removes the old system for playing online games and chatting with online opponents. If you're still playing games using the old system, please finish those games and switch to the new system. (You were told this transition was going to happen more than a year ago.) The new system is called "Play online" and is accessed via the cloud button on the main toolbar.

- Added support for Dark Mode
- Added support for split-screen mode on the iPad
- Increased the size of the opening library to 75,000 moves

Apr 07
Version 1.9.1

- Fixed a bug where some "Play online" games could get unsynchronized and stuck
- Added a message to explain that "Play online" games are not necessarily real-time

Apr 05
Version 1.9.0

- This update adds a new system for playing online. You can access it by tapping on the cloud button on the main toolbar. It should be much easier to use and more reliable than the old system. The old system is still included, so if you have active games, you can finish them. But it will be removed in a future version of tChess. I hope you enjoy the new system!

Jan 10
Version 1.8.6

- Support for the iPhone X screen resolution and layout
- Bug fixes

Sep 22
Version 1.8.5

- Fixed a problem with the "Edit Position" feature

Sep 17
Version 1.8.4

- Updated for iOS 11

Aug 04
Version 1.8.3

- New "Analyze Game" feature: see an overview of the entire game in seconds
- Native support for the iPhone 6/6+ screen resolutions
- New "Benchmark" feature: measure your iOS device's performance
- Optional "Revert" toolbar button
- Optional "New game" toolbar button

Dec 03
Version 1.8.2

- New “Toolbar buttons” feature allows you to customize the main toolbar
- New (optional) Game Center toolbar button allows you to quickly access the list of turn-based Game Center games
- Fixed a bug that was causing Profile information to be deleted in some cases
- Fixed a bug that was causing tChess to crash in some cases when submitting Game Center moves
- Compatible with PGN files that don’t have spaces between move numbers and moves
- Time controls now carry over to new games
- Shortcut in the Annotation menu allows you to enter a new annotation with one tap

Sep 26
Version 1.8.1

- Added a "Dark background" option in the Appearance menu
- Fixed a problem with the PGN Database feature that prevented the "Open games at beginning" option from working and that prevented the previous/next game buttons from working

Sep 18
Version 1.8.0

- Redesigned to match Apple's latest design language!
tChess has a new look, but retains its "classic" look on older versions of iOS.

- All-new support for PGN, including variations!
- New move annotation viewer/editor supports multiple annotations, variations, and NAGs per move
- Support for nested variations (variations within variations)
- New PGN tag editor supports arbitrary tags
- New time control editor
- Supports an unlimited number of saved games

Jun 27
Version 1.7.5

- Self-play mode
- Playback mode
- Export to camera roll
- Printing (via AirPrint)
- Remembers which game is selected in each PGN file
- Can play against any other version of tChess (Lite, Pro, etc.) via Game Center
- Ability to send messages to Game Center opponents
- Added the back and forward toolbar buttons during Game Center games
- Improvements to the engine; now much better at finding optimal checkmates

Feb 20
Version 1.7.4

- Support for iCloud to synchronize PGN files (requires iOS 6.0 or newer)
- Option to sort saved games alphabetically
- Ability to search PGN files by tChess saved game name
- Feature to revert to a PGN game
- Option to give imported PGN files unique filenames if there's a conflict
- Feature to rename PGN files
- Improvements to the chess engine

Sep 27
Version 1.7.3

- Support for the iPhone 5's new screen size and iOS 6
- Learn Chess is now full-screen on the iPad
- Option to flip all the pieces when it's black's turn (for two-player games)
- Option to use the hint button to toggle Analysis Mode
- New menu to set defaults for saving and exporting games (default recipient, etc.)
- Saves all rated games to "rated_games.pgn"
- Support for complete Forsyth-Edwards Notation

Mar 27
Version 1.7.2

- Support for the new iPad's Retina Display
- Optimized 3-D engine (over 3 times faster!)
- Redesigned menu system
- Online play (Game Center) improvements

Nov 03
Version 1.7.1

- Added support for German, French, Japanese, Korean, and Chinese

Oct 07
Version 1.7.0

- Added support for turn-based Game Center (new for iOS 5)!
- Added support for annotations in PGN files.
- Updated the interface for selecting PGN files (and removed the 25 file limit).

Apr 28
Version 1.6.0

- Added Game Center support. Play chess with your friends in real time!!

- Added support for dual-core processors (iPad 2). Enable it in the Settings menu and Analysis Mode will calculate 50-80% faster!

Jan 11
Version 1.5.6

- Automatically exports all saved games to "saved_games.pgn" (iTunes file sharing)
- Pauses the chess clock when tChess isn't the active app
- Improved compatibility with the PGN file format
- Fixes an orientation/rotation problem with iOS 4.2.1 on the iPad

Oct 19
Version 1.5.5

New for iOS 3.2 and up:
- Ability to open chess game (PGN) file attachments
- Support for iTunes File Sharing

New for every iOS version:
- Improved variability of opening moves
- New Position Editor options
- New Database options
- New editor for PGN tags
- Exports games as PGN file attachments
- Improved performance for iOS 4

Jun 23
Version 1.5.4

- Support for iOS 4.0
- Support for Retina Display
- Replaced 2-D Staunton pieces with high-resolution photorealistic raytraced pieces
- Improved animation smoothness
- Adjusted engine strength vs. rating
- Improved engine strength in endgame
- Increased maximum number of PGN files

Apr 27
Version 1.5.3

- Added landscape mode for iPad

Apr 01
Version 1.5.2

- Added hand-painted 2-D wood and marble graphics
- Added freely-rotating 3-D board with high-polygon-count Staunton pieces and dynamic lighting
- Improved engine strength by 10 ELO
- Added iPad support

Jan 05
Version 1.5.0

- New "Database" feature: download and view PGN files!!
- Replaced the computer's difficulty levels with ratings: play against any ELO rating, from 500 to 2500
- Replaced the Statistics feature with the new "Profile" feature: play against the computer for rating points, and track your progress with the Rating History feature

NOTE: This update replaces the existing Statistics feature. Please write down your current statistics if you want to save them.

Sep 23
Version 1.4.0

- Added Captured Pieces display
- Added "Copy & paste game" feature
- Added "Flip top pieces" feature
- Corrected toolbar icon size in OS 3.x
- Improved engine strength by 30 ELO

May 07
Version 1.3.0

- New Statistics feature
- Displays opening names and codes from Encyclopedia of Chess Openings
- New Opening Library feature
- Integrated Learn Chess app
- Scores in Analysis Mode now displayed from white's perspective
- Increased opening database size to over 15,000 moves
- New blindfold mode

Jan 23
Version 1.2.0

Nov 04
Version 1.0

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