This is a small update to fix a recently discovered bug. - It is no longer possible to submit certain illegal moves by clicking them really fast. Don't ask.

Changelog: Big changes to the in-game guide. New time controls (clocks) for competitive matches, and a new splash screen. Puzzles! Added 14 puzzles, some easy and some hard. Minor modifications to existing puzzles for better tutorialization.

• New Rook Tactics IV (old IV is now V).
• New Bishop Tactics IV and V.
• Modified Bishop Tactics I and II.
• New Pawn Tactics I, II, and III.
• New King Tactics III.
• New Opening Traps II and V (old II and III are now III and IV).
• New Unicorn Tactics I and II.
• New Dragon Tactics I.
• New Tricky Checkmates III.
• New Advanced Branching II.

• Modified Misc - Very Small
• Renamed a few variants for clarity ("Misc - Small Open" to "Small - Open" etc)
• New Misc - Royal Queen Showdown
• New Misc - King of Kings
• New Standard - Reversed Royalty
• New Simple - Simple Set
• New Focused - Just Brawns
• New Misc - Timeline Skirmish
• New Misc - Timeline Fragments
• New Misc - Timeline Marauders

In the past few weeks, a series of patches have collectively included the the following changes: Misc:

• Mac and Linux versions are available (since about 8/29).
• Colorblind mode for r/g blindness.
• Some changes clarifying the purpose of various UI elements.

• Very minor graphical bug fixes.
• Fixed a bug that caused CPU opponents to get stuck "Thinking..." in certain conditions.
• Fixed bugs that caused the game to get stuck "Looking..." in certain conditions. All known causes of this bug are addressed in the current version.

• Standard - Defended Pawn
• Standard - Princess (featuring a new type of Queen w/ only rook+bishop movement).
• Standard - Turn Zero
• Standard - Two Timelines

A few minor patches have been released over the weekend to address the following issues:

• One known cause of the a "black screen" issue, believed to affect Intel HD 4000 and Intel HD 5500 GPUs.
• One crash on startup related to having zero audio devices.

Thank you everyone who's playing the game, sharing it with their friends, and exploring the game together. Windows 7, 8, and 8.1 are now officially supported. Fixed a crash related to non-ascii characters in your Windows username. Fixed a few bugs related to puzzles.

• Puzzle draws are no longer counted as wins.
• Puzzle AI avoids a few blunders.

The game is now available! Follow us on @thunkspace or subscribe to our mailing list Thunkspace Mailing List for updates and announcements, or just read them here! Tell your friends!

What is it?

Features

• Sharpen your tactics by solving a collection of multiverse chess puzzles.
  
• Practice against four different AI personalities, each with different strengths and styles.
  
• Try out a variety of different starting positions and scenarios.
  
• Play online with your friends or against strangers.

More Features

• Learn as you go. An intuitive interface makes experiementation quick and easy.
  
• Visualize how your pieces move with highly-polished diagrams and views.

Buy it!

• Show your friends!

• OS: 64-bit Linux
• Processor: 2Ghz or better.Memory: 512 MB RAM
• Memory: 512 MB RAM
• Graphics: OpenGL 3.3 compatibility (everything since about 2010).
• Storage: 50 MB available spaceAdditional Notes: glibc>=2.17 required